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2018年第3期

时间:2018-04-26 16:21:28??来源:??作者:

?从态势认知走向态势智能认知qkgag8879环亚手机|首页主页

qkgag8879环亚手机|首页主页

朱丰1,2,胡晓峰1,吴琳1,贺筱媛1,吕学志1,廖鹰1,3qkgag8879环亚手机|首页主页

1.中国人民解放军国防大学,北京 1000912.中国人民解放军93682部队,北京 1013003.中国人民解放军信息工程大学,郑州 450001qkgag8879环亚手机|首页主页

摘要:针对联合作战背景下战役级作战态势认知相关问题进行了探讨,提出了态势认知、态势智能认知的概念模型,并厘清了若干概念提出了态势智能认知相关技术框架,并剖析了其中要重点突破的5个关键问题,给出了可能的技术路线,为从作战态势认知走向态势智能认知奠定了基础。qkgag8879环亚手机|首页主页

关键词:战场态势认知;人工智能技术;态势智能认知;概念模型;技术框架qkgag8879环亚手机|首页主页

中图分类号:E917? ???????文献标识码:B?? ???????文章编号:1004-731X (2018) 03-0761-11qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803001qkgag8879环亚手机|首页主页

From Situation Cognition Stepped into Situation Intelligent Cognitionqkgag8879环亚手机|首页主页

Zhu Feng1,2, Hu Xiaofeng1, Wu Lin1, He Xiaoyuan1, Lü Xuezhi1, Liao Ying1,3qkgag8879环亚手机|首页主页

(1.National Defense University of PLA, Beijing 100091, China; 2. No. 93682 Unit of PLA, Beijing 101300, China; 3. Information Engineering of PLA, Zhengzhou 450001, China)qkgag8879环亚手机|首页主页

Abstract: Aimed at operational situation cognition and some relevant problems under the background of the Joint-Tactical, some deep researches are carried out in this paper. The concept models of combat situation cognition and situation intelligent cognition are proposed respectively, and some related concepts are clarified. The situation intelligent cognition technology framework is proposed, and five key problems which should be solved are analyzed, and the possible technical routes are given. These research contents and achievements build a foundation for stepping into the situation intelligent cognition from combat situation cognition.qkgag8879环亚手机|首页主页

Keywords: combat situation cognition; artificial intelligence; situation intelligent cognition; concept model; technology frameworkqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

基于强制稀疏自编码神经网络的作战态势评估方法研究qkgag8879环亚手机|首页主页

郭圣明,贺筱媛,吴琳,胡晓峰qkgag8879环亚手机|首页主页

(国防大学联合作战学院,北京 100091qkgag8879环亚手机|首页主页

摘要:针对传统数据挖掘方法无法解决态势评估中防空体系特征自主挖掘和生成机理分析的问题,提出一种基于强制自编码神经网络的态势评估方法结合大数据与复杂网络技术,构建强制自编码深度学习网络模型,形式化描述体系能力指标之间的级联涌现关系,在战场态势预测分析的基础上,进一步深入分析体系能力生成机理及贡献度,并通过仿真数据对模型进行验证。该模型对体系能力指标涌现的形式化描述,不仅体现了涌现过程的非线性、不确定性等复杂性特征,还赋予指标体系相对明确的物理含义,为辅助指挥员深入认知复杂战场态势提供了可行的方法手段。qkgag8879环亚手机|首页主页

关键词:态势评估;先验知识;强制稀疏自编码神经网络;涌现效应;贡献度qkgag8879环亚手机|首页主页

中图分类号:TP391.9????? 文献标识码:A??? ???文章编号:1004-731X (2018) 03-0772-14qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803002qkgag8879环亚手机|首页主页

Situation Assessment Approach for Air Defense Operation System Based on Force-Sparsed Stacked-Auto Encoding Neural Networksqkgag8879环亚手机|首页主页

Guo Shengming, He Xiaoyuan, Wu Lin, Hu Xiaofengqkgag8879环亚手机|首页主页

(Joint War College, National Defense University of PLA, Beijing 100091, China)qkgag8879环亚手机|首页主页

Abstract: Aiming at the difficulty of feature extraction and related generation mechanism analysis for complex Air Defense System of Systems (ADSOS) using traditional data mining method, a novel situation assessment approach based on Force-Sparsed Stacked-Auto Encoding Neural Networks (FS-SAE) is proposed. Combined with big data and complex networks technology, FS-SAE situation assessment model is built. The emergence relations between the capacity indexes of ADSOS are formalized. And then, the formation mechanism and the contribution rate of capacity indexes are studied and the validity of this approach is validated by the simulation data. The experimental results show that formalized presentation for the emergence process of capacity indexes of ADSOS based on the proposed model not only reflects the complexity characteristics of non-linear and uncertainty in emergence process, but also gives general-defined meaning for indexes structure of ADSOS. It provides a feasible method for the commanders to deeply understand, manage and control the complex operation system.qkgag8879环亚手机|首页主页

Keywords: situation assessment; heuristic knowledge; FS-SAE; emergence effect; contribution rate of SOSqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

基于深度学习的战场态势变化速度预测模型qkgag8879环亚手机|首页主页

陶九阳1,2,吴琳1,王驰1,褚君达1,廖鹰1,朱丰1qkgag8879环亚手机|首页主页

1.国防大学联合作战学院,北京 1000912.陆军工程大学,江苏 南京 210007qkgag8879环亚手机|首页主页

摘要:战场态势变化剧烈程度的度量和估计,对指挥员均衡认知负载,降低决策风险具有重要意义。首先,基于态势要素状态变化过程中产生的自信息量,建立了态势变化速度计算模型;随后,以二维网格中态势要素机动为基本案例,探索了基于深度学习的态势要素趋势预测方法,证明了深度学习模型的损失函数交叉熵等价于态势变化速度;最后,通过实验分析了随着态势要素客观不确定性的增加,态势变化速度和趋势预测准确性的变化情况,得到推论:学习模型对态势要素的趋势预测准确率存在上限,上限值与态势变化速度成反比。qkgag8879环亚手机|首页主页

关键词:不确定性;信息论;态势认知;深度学习;香农熵qkgag8879环亚手机|首页主页

中图分类号:TP391.9????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-0785-08qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803003qkgag8879环亚手机|首页主页

A Model for Battlefield Situation Change Rate Prediction Based on Deep Learningqkgag8879环亚手机|首页主页

Tao Jiuyang1,2, Wu Lin1, Wang Chi1, Chu Junda1, Liao Ying1, Zhu Feng1qkgag8879环亚手机|首页主页

(1.Joint Operations College, National Defense University, Beijing 100091, China; 2.Army Engineering University of PLA, Nanjing 210007, China)qkgag8879环亚手机|首页主页

Abstract: To measure and estimate the uncertainty of the battlefield situation is of great significance for the commanders to plan the reconnaissance mission and reduce the risk of decision-making. Based on Shannon's information theory, firstly, methods and a model on measurement of situation change rate are proposed. Secondly, a scene with two-dimensional grid elements maneuvering is established, based on deep learning, the prediction method for maneuvering trend is explored. It is proved that cross entropy is equivalent to situation change rate. Finally, with the increase of the objective uncertainty, situation change rate and the accuracy of the forecast is analyzed. It is deduced that there is an upper limit on the prediction accuracy based on the learning model, and the upper limit is inversely proportional to the situation change rate.qkgag8879环亚手机|首页主页

Keywords: information theory; situation awareness; deep learning; shannon entropyqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

基于深度时空循环神经网络的协同作战行动识别qkgag8879环亚手机|首页主页

易卓1,廖鹰1,2,胡晓峰2,杜学绘1,朱丰2qkgag8879环亚手机|首页主页

1.信息工程大学,河南 郑州 4500012.国防大学联合作战学院,北京 100091qkgag8879环亚手机|首页主页

摘要:针对协同作战行动识别面临的行为特征空间大、模型参数多、训练速度慢等问题,将时空图模型和时序建模有机结合,提出基于深度时空循环神经网络的协同作战行动识别方法,建立战场协同作战行动识别架构,引入建议窗口生成机制划分战场空间为局部战场集,利用时空图设计层次循环神经网络模型以识别局部战场协同作战行动,并结合局部战场协同关系传递性实现整个战场的协同行动识别。实验分析表明,该方法具有较高的协同作战行动识别准确率。qkgag8879环亚手机|首页主页

关键词:协同作战;层次循环神经网络;协同作战行为识别;时空图;态势理解qkgag8879环亚手机|首页主页

中图分类号:TP183; E919????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-0793-08qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803004qkgag8879环亚手机|首页主页

A deep spatio-temporal RNNs based coordinated operational action recognitionqkgag8879环亚手机|首页主页

Yi Zhuo1, Liao Ying1,2, Hu Xiaofeng2, Du Xuehui1, Zhu Feng2qkgag8879环亚手机|首页主页

(1.Information Engineering University, Zhengzhou 450001, China; 2.Department of Information Operation & Command Training, NDU, Beijing 100091, China)qkgag8879环亚手机|首页主页

Abstract: To address the issues of large feature space, numerous model parameters and slow training speed in coordinated operation action recognition, a coordinated operational action recognition method based on a deep spatio-temporal recurrent neural network is proposed. In this method, a warped region generation mechanism is introduced to divide the whole battlefield into sub-battlefield. Meanwhile, a hierarchical recurrent neural network is constructed using spatio-temporal graph model, which is applied to the generated sub-battlefield to recognize coordinated operational action. Additionally, the recognized coordinated operational actions of sub-battlefields are merged to find out all coordinated operational actions based on the principle of transitivity of coordinated operational actions in local battlefield. Experiment results suggest that the proposed method possesses higher accuracy.qkgag8879环亚手机|首页主页

Keywords: coordinated operation; hierarchical recurrent neural network; coordinated operation action recognition; spatio-temporal graph; situation comprehensionqkgag8879环亚手机|首页主页

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基于三维卷积神经网络的战场聚集行为预测qkgag8879环亚手机|首页主页

廖鹰1,2,易卓1,胡晓峰2,田园1,陶九阳2qkgag8879环亚手机|首页主页

1.信息工程大学,河南 郑州 4500012.国防大学联合作战学院,北京 100091qkgag8879环亚手机|首页主页

摘要:为解决战场聚集行为预测面临的特征空间大、涉及单元动态变化、聚集特征难以提取等挑战,提出基于三维卷积神经网络的战场聚合行为预测方法。通过在二维卷积核基础上引入时间维度,建立三维卷积神经网络模型,以识别战场聚集行为;通过构建可变结构的层次长短时记忆网络对聚集行为进行时序分析,预测聚集行为发生的时间、地点等关键要素。实验分析表明,该方法能较准确地预测战场的聚集行为,且引入人在回路策略将进一步提升预测的准确性。qkgag8879环亚手机|首页主页

关键词:聚集行为;3D卷积神经网络;时空特征;态势理解qkgag8879环亚手机|首页主页

中图分类号:TP183E919????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-0801-08qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803005qkgag8879环亚手机|首页主页

A 3D Convolution Neural Network for Operational Aggregation Behavior Predictionqkgag8879环亚手机|首页主页

Liao Ying1,2, Yi Zhuo1, Hu Xiaofeng2, Tian Yuan1, Tao Jiuyang2qkgag8879环亚手机|首页主页

(1. Information Engineering University, Zhengzhou 450001, China; 2. Department of Information Operation & Command Training, NDU, Beijing 100091, China)qkgag8879环亚手机|首页主页

Abstract: Operational aggregation behavior prediction has encountered the challenges of large feature space, dynamic changes of related combat units and large behavior noise, etc. To address these issues, a operational aggregation behavior prediction method based on a 3D convolution neural network is proposed. In this method, a three-dimension convolution neural network is constructed by introducing the time dimension into the two-dimension convolution so as to recognize the operational aggregation behaviors. After that, a reconfigurable hierarchical long short-term memory (LSTM) network is adopted to analyze the temporal aggregation behavior data of related combat units, with which the key factors of aggregation behaviors such as time, location could be calculated. Experiment results suggest that the proposed method could predict operational aggregation behaviors accurately. Meanwhile, the method will perform much better when introducing the man-in-the-loop mechanism.qkgag8879环亚手机|首页主页

Keywords: operational aggregation behavior; 3D convolution neural network; spatio-temporal feature; situation comprehensionqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

气动人工肌肉迟滞-蠕变特性研究现状与进展qkgag8879环亚手机|首页主页

谢胜龙,刘海涛,梅江平qkgag8879环亚手机|首页主页

(天津大学机构理论与装备设计教育部重点实验室,天津 300072)qkgag8879环亚手机|首页主页

摘要:针对气动人工肌肉中存在的迟滞及蠕变现象,回顾了其研究历史并总结了国内外主要研究机构的研究现状。从气动人工肌肉迟滞及蠕变现象的特点、产生原因、建模以及基于迟滞模型的控制策略等方面,对现有的研究进展与成果进行了综述分析了目前气动人工肌肉中存在的问题并提出了进一步研究的思路。从目前的发展趋势来看,气动人工肌肉迟滞与蠕变的理论研究还远不充分。迟滞特性建模需要解决因蠕变引起的参数动态变化问题,神经网络建模需解决多环辨识问题,而基于逆模型补偿的控制策略则需要解决模型复杂以及参数敏感问题。qkgag8879环亚手机|首页主页

关键词:气动人工肌肉;迟滞;蠕变;逆模型;控制qkgag8879环亚手机|首页主页

中图分类号:TH117.3????? 文献标识码:B?????? 文章编号:1004-731X (2018) 03-0809-15qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803006qkgag8879环亚手机|首页主页

Achievements and Developments of Hysteresis and Creep of Pneumatic Artificial Musclesqkgag8879环亚手机|首页主页

Xie Shenglong, Liu Haitao, Mei Jiangpingqkgag8879环亚手机|首页主页

(Key Laboratory of Mechanism Theory and Equipment Design, Ministry of Education, Tianjin University, Tianjin 300072, China)qkgag8879环亚手机|首页主页

Abstract: Regarding to the problems of hysteresis and creep, the developments and achievements of the research on pneumatic artificial muscles at home and abroad are systemically reviewed. The state of the art is summarized in terms of characteristics, reasons causing, modeling and control strategies based on the hysteresis and creep modeling. The problems in recent research are analyzed and the direction for further research is put forward. The theoretical study on hysteresis and creep of pneumatic artificial muscle is limited. The hysteresis modeling needs to consider the time-varied parameters caused by creep. Neural network modeling needs to solve the problem of multi loop identification. The control strategy based on inverse model compensation faces the problems of model complexity and parameter sensitivity.qkgag8879环亚手机|首页主页

Keywords: pneumatic artificial muscle; hysteresis; creep; inverse model; controlqkgag8879环亚手机|首页主页

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基于多智能体算法的CA林火空间扩散模型qkgag8879环亚手机|首页主页

周国雄,吴淇,陈爱斌*qkgag8879环亚手机|首页主页

(中南林业科技大学 计算机与信息工程学院,湖南 长沙 410004qkgag8879环亚手机|首页主页

摘要:针对林火蔓延多相和多组分的性质,提出一种基于多智能体算法的CA林火空间扩散模型。采用基于王正非的CA模型对林火蔓延趋势进行近似模拟。CA确定的元胞状态转换规则的基础上,结合多智能体算法的自学习及变异的方法,使得实测林火格局与CA规则驱动的演进模式最为接近,实现自动优化CA规则,使得CA蔓延模型的精度提高。通过仿真结果,对比分析传统的Rothermel模型与本文提出的方法,可知在火场面积和火场周长方面,实际林火蔓延过程与本文提出的林火空间扩散模型的实验仿真结果具有较高的相似性。qkgag8879环亚手机|首页主页

关键词:进化智能体;多智能体算法;元胞自动机;规则函数;林火蔓延qkgag8879环亚手机|首页主页

中图分类号:TP 273????? 文献标识码:A??? ???文章编号:1004-731X (2018) 03-0824-08qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803007qkgag8879环亚手机|首页主页

Forestry Fire Spatial Diffusion Model Based on Multi-Agent Algorithm with Cellular Automataqkgag8879环亚手机|首页主页

Zhou Guoxiong, Wu Qi, Chen Aibin*qkgag8879环亚手机|首页主页

(School of Computer and Information Engineering, Central South University of Forestry & Technology, Changsha 410004, China)qkgag8879环亚手机|首页主页

Abstract: In view that forestry fire has the nature of multi-phase and multi-component, a forestry fire spatial diffusion model based on multi-agent algorithm with cellular automata is proposed. A method based on Wang Zhengfei-CA model is employed to approximately simulate the spread of forestry fire. On the basis of the status transition rule determined by CA and using the self-learning and variation methods of multi-agent algorithm, the measured forestry fire pattern is most similar to CA rule-driven evolution model and the CA rule can be automatically optimized. By comparatively analyzing the simulation results of the traditional Rothermel model and the method proposed in this paper, it is found that in the respects of fire area and fire perimeter, the actual forestry fire spread process has higher similarity to the simulation results of the proposed forestry fire spatial diffusion model.qkgag8879环亚手机|首页主页

Keywords: evolutionary agent; multi-agent algorithm cellular; automata; rules function; forestry fireqkgag8879环亚手机|首页主页

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考虑堆场派送顺序的混合目的港贝内排箱及其仿真优化qkgag8879环亚手机|首页主页

张煜1,程惠敏1,徐进1,田维1,孙俊峰2qkgag8879环亚手机|首页主页

(1. 武汉理工大学物流工程学院,湖北 武汉 4300632. 中交第二航务工程勘察设计院有限公司,湖北 武汉 430060)qkgag8879环亚手机|首页主页

摘要:考虑堆场派送顺序,构建了混合目的港贝内排箱问题的整数线性规划模型,目标是最小化船舶贝内横倾力矩。利用该数学规划模型,仿真分析了不同派送规则对问题求解的影响。为提高问题求解的计算效率,设计了基于遗传算法的仿真优化,仿真模型能够模拟派送和装船过程,利用规则集构造可行解,并输入给优化模型。在遗传算法中,提出了有效的编码和解码形式,能够实现船舶贝内集装箱的互换和移动操作,实现种群个体质量的提高。结合ILOG CPLEX中的分支定界方法和实例仿真分析,验证了基于遗传算法的仿真优化模型的性能。qkgag8879环亚手机|首页主页

关键词:集装箱船舶;贝内排箱;整数线性规划;仿真优化;遗传算法qkgag8879环亚手机|首页主页

中图分类号:U169.63???? ???文献标识码:A?? ??????文章编号:1004-731X (2018) 03-0831-09qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803008qkgag8879环亚手机|首页主页

Simulation Optimization on Multi-Ports Slot Plan Problem Considering Dispatching Sequence of Containers in Yardqkgag8879环亚手机|首页主页

Zhang Yu1, Cheng Huimin1, Xu Jin1, Tian Wei1, Sun Junfeng2qkgag8879环亚手机|首页主页

(1. School of Logistics Engineering, Wuhan University of Technology, Wuhan 430063, China; 2. CCCC Second Harbor Consultants Co., Ltd, Wuhan 430060, China)qkgag8879环亚手机|首页主页

Abstract: The multi-ports slot plan problem considering dispatching sequence of containers in yard is solved by an integer linear programming model, which minimizes heeling moment.? The influences of different dispatching rules on solving the problem are simulated and analyzed through the programming model. Accordingly, a simulation optimization model based on genetic algorithm is constructed in order to enhance the computational efficiency. The simulation optimization model simulates the process of dispatching containers and loading vessel. The feasible solution is constructed through rules sets and inputted into the optimization model. An efficient encoding and decoding solutions are developed in genetic algorithm, which accomplish the swapping or moving operation of containers in bay of container vessel and improve the individual quality of population. The performance of simulation optimization model based on genetic algorithm is demonstrated through simulation experiments and the comparison with branch & bound algorithm from ILOG CPLEX.qkgag8879环亚手机|首页主页

Keywords: container vessel; slot plan; integer linear programming; simulation optimization; genetic algorithmqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

Map Reduce框架下空间大数据的关联规则分析方法qkgag8879环亚手机|首页主页

张明智1,李义1,2qkgag8879环亚手机|首页主页

(1. 国防大学信息作战与指挥训练教研部,北京 1000912. 66194部队,北京 100012)qkgag8879环亚手机|首页主页

摘要:空间数据具有空间性、时间性、多维性、大数据量、空间关系复杂等特点,如何在空间大数据里面寻找模式、规律和特征知识,用于战场态势感知和战场空间管理,这需要利用和开发一些非传统的数据筛选工具进行分析、挖掘。针对现有Apriori算法扫描数据库过于频繁的问题,结合Map Reduce的工作原理,对Apriori算法进行了改进,提出基于Map Reduce的空间大数据快速分析思路和技术框架,初步搭建了验证原型,对关键技术进行实验。实例验证结果表明,利用该技术路线和框架,可以提升海量空间数据的处理分析速度。qkgag8879环亚手机|首页主页

关键词:空间数据;大数据;关联规则;分析方法;并行计算qkgag8879环亚手机|首页主页

中图分类号:TP393?????? 文献标识码:A??????? 文章编号:1004-731X (2018) 03-0840-06qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803009qkgag8879环亚手机|首页主页

Association Rules Analysis Method of Spatial Data Under MapReduce Frameworkqkgag8879环亚手机|首页主页

Zhang Mingzhi1, Li Yi1,2qkgag8879环亚手机|首页主页

(1. The Department of Information Operation & Command Training, National Defense University, Beijing 100091, China; 2. The Forces of 66194, Beijing 100012, China)qkgag8879环亚手机|首页主页

Abstract: Spatial data has the characteristic of extensity, timeliness, multidimensional, large amount of data and complex relations. Some non-conventional data screening tool for analysis and mining is required to find out the patterns, rules and characteristics knowledge in the spatial big data for battlefield situation awareness and battle space management. In view that the existing Apriori algorithm scans the database too frequently, the Apriori algorithm is improved on the basis of working principle of Map Reduce .The fast analysis ideas and technologyframework of spatial data is proposed. An elementary validate prototype is built for the key technology experimentation.Experimental results show that, the technical route and framework can improve the speed of massive spatial data analysis and processing.qkgag8879环亚手机|首页主页

Keywords: spatial data; big data; association rules; analysis method; parallel computingqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

基于状态跟踪的非线性工业系统全工况建模qkgag8879环亚手机|首页主页

董泽,尹二新qkgag8879环亚手机|首页主页

(河北省发电过程仿真与优化控制工程技术研究中心(华北电力大学),保定 071003)qkgag8879环亚手机|首页主页

摘要:提出一种基于状态跟踪的非线性工业系统全工况建模方法。针对历史数据量过大,建模数据筛选困难的问题,设计一滑动窗口筛选稳态数据,推导了窗口中标准差的快速递推算法;分析未知扰动对系统的影响机制,选取由动态回归稳态的数据建模,提出一种可消除扰动影响的数据驱动建模算法;利用过程工业大数据包含的模型信息,应用高次函数拟合各工况模型参数,提出一种基于特征参数的线性变参数传递函数模型。对某工业过程进行辨识,表明了有效性。qkgag8879环亚手机|首页主页

关键词:过程工业大数据;稳态工况筛选;状态观测器;非线性系统;全工况建模qkgag8879环亚手机|首页主页

中图分类号:TP391.9????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-0846-11qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803010qkgag8879环亚手机|首页主页

Modeling of Nonlinear Industrial System at All Operating Conditions Based on State Trackingqkgag8879环亚手机|首页主页

Dong Ze, Yin Erxinqkgag8879环亚手机|首页主页

(Hebei Engineering Research Center of Simulation & Optimized Control for Power Generation (North China Electric Power University), Baoding 071003, China)qkgag8879环亚手机|首页主页

Abstract: From the prospective of industrial big data modeling, this paper presents a modeling method for nonlinear industrial system at all operating conditions based on state tracking. In view of large amount of historical data and the difficulty to screen the modeling data, a sliding window is designed to screen steady-state data. The fast calculation method for the standard deviation is deducted. The influence mechanism of unknown disturbance on the system is analyzed. The data segment, representing the system from dynamic state to stable state, is selected as the modeling data. A data-driven modeling algorithm, which can effectively eliminate the disturbance influence, is proposed. The model information contained in the process industry big data is adopted and the high order function is applied to fit the model parameters. A linear transfer function model with variable parameter based on the characteristic parameters is proposed. The effectiveness of the proposed method is verified by modeling an industrial process.qkgag8879环亚手机|首页主页

Keywords: big data of process industries; steady state screening; state observer; nonlinear system; modeling at all operating conditionsqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

基于Agent-元胞自动机的机场场面交通仿真qkgag8879环亚手机|首页主页

邢志伟1,李世皎1,唐云霄1,罗谦2qkgag8879环亚手机|首页主页

1.中国民航大学航空地面特种设备民航研究基地,天津 3003002.中国民航局第二研究所信息技术分公司,成都 610041qkgag8879环亚手机|首页主页

摘要:为分析机场场面交通态势,提出了Agent智能体理论与元胞自动机模型理论相结合的机场场面交通仿真方法。对机场场面的交通特点进行了分析;探讨了Agent智能体理论与元胞自动机模型理论的结合点和结合方法,将机场交通的不同部分分别定义成一维元胞自动机,定义了飞机Agent结构,构建了一个基于Agent-元胞自动机的机场场面交通仿真模型;对机场场面交通进行仿真分析。结果表明,该仿真方法具备了简单、高效、高精度的特点,反映出了机场交通系统中飞机滑行的自主性和个体差异性;对机场场面交通运行态势的分析及评估具有较高的应用价值。qkgag8879环亚手机|首页主页

关键词:机场场面交通;Agent智能体;元胞自动机;交通仿真;交通运行态势qkgag8879环亚手机|首页主页

中图分类号:TP391.9????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-0857-09qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803011qkgag8879环亚手机|首页主页

Airport Surface Traffic Simulation Based on Agent-Cellular Automatonqkgag8879环亚手机|首页主页

Xing Zhiwei1, Li Shijiao1, Tang Yunxiao1, Luo Qian2qkgag8879环亚手机|首页主页

(1.R&D Base of Special Ground Equipment, CAUC, Tianjin 300300, China; 2. Information Technology Filiale, The Second Research Institute of CAAC, Chengdu 610041, China)qkgag8879环亚手机|首页主页

Abstract: In order to analyze the traffic situation of airport surface, an airport surface traffic simulation method is proposed based on the theory of agent and cellular automaton model. The traffic characteristics of airport surface are analyzed. The combination of agent theory and the cellular automaton model is discussed. Different parts of the airport surface traffic are defined respectively as one-dimensional cellular automaton, and aircraft agent is designed, which means that a traffic simulation model is constructed based on agent-cellular automaton. The airport surface traffic is simulated. Simulation results show that the simulation method has the characteristics of simple, high efficiency and high accuracy, which can reflect the autonomy and individual differences of aircraft taxi in airport traffic system. And the analysis and assessment of the traffic situation has high application value in airport surface.qkgag8879环亚手机|首页主页

Keywords: airport surface traffic; agent; cellular automata; traffic simulation; traffic operation situationqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

基于非均匀流浅水效应的船舶操纵建模与仿真qkgag8879环亚手机|首页主页

童思陈1,2,唐小娅1,2,张欢1,2qkgag8879环亚手机|首页主页

(1. 重庆交通大学 河海学院,重庆 4000742. 国家内河航道整治工程技术研究中心,重庆 400074)qkgag8879环亚手机|首页主页

摘要:为更好体现和模拟山区河道的水流条件和船舶航行姿态,在明渠恒定非均匀水流模型基础上,开发了基于浅水效应的3自由度MMG船舶操纵运动数学模型通过船舶定回转试验和Z型运动模拟结果表明,随着水深吃水比h/d的减小,船舶浅水效应越为突出,直航速度越小,定回转直径越大;同时,船舶Z型运动的摆幅越大,运动周期越长,说明船舶的舵效和操纵性能越差。结合工程实例分析表明,本文开发的基于非均匀流和浅水效应的船舶操纵运动数学模型可以应用于工程实际研究,山区河道的船舶操纵运动采用基于浅水效应的模型计算才更加合理和符合实际。qkgag8879环亚手机|首页主页

关键词:航道工程;非均匀流;浅水效应;船舶操纵性;船舶数学模型qkgag8879环亚手机|首页主页

中图分类号:U661.33????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-0866-07qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803012qkgag8879环亚手机|首页主页

Modeling and Simulation of Ship Maneuvering Motion Based on Non-Uniform Flow and Shallow Water Effectqkgag8879环亚手机|首页主页

Tong Sichen1,2, Tang Xiaoya1,2, Zhang Huan1,2qkgag8879环亚手机|首页主页

(1. School of river and ocean engineering, Chongqing Jiaotong University, Chongqing 400074, China;2. National engineering research center for inland waterway regulation, Chongqing 400074, China)qkgag8879环亚手机|首页主页

Abstract: To reflect and simulate the flow condition and ship attitude in mountainous river, a 3-DOF ship motion mathematical model based on open channel non-uniform flow and shallow water effect is put forward. Analysis of the numerical simulation shows that with the decrease of depth-draft ratio h/d, the ship direct navigation speed decreases, the shallow water effect and the turning diameter increases. Meanwhile, the Z motion fluctuation?amplitude and the oscillation period increase with the decrease of h/d, which means the decrease of the rudder effect and maneuverability. Application of the model in a case study shows that the proposed model can be applied in the engineering research. It is more rational?and practical?to achieve the ship maneuverability model based on open channel non-uniform flow and shallow water effect.qkgag8879环亚手机|首页主页

Keywords: waterway engineering; non-uniform flow; shallow water effect; ship maneuverability; ship motion mathematical modelqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

潜艇鱼雷射击过程仿真建模qkgag8879环亚手机|首页主页

吴金平,毛俊超,丁文强qkgag8879环亚手机|首页主页

(海军潜艇学院,山东 青岛 266100qkgag8879环亚手机|首页主页

摘要:采用定性分析与经典数学方法对潜艇鱼雷射击过程进行建模,为潜艇鱼雷攻击、鱼雷作战使用和鱼雷作战效能分析等作战问题的建模与仿真研究奠定基础。作为潜艇鱼雷攻击过程的重要组成部分,鱼雷射击过程主要是指从鱼雷出管到命中目标或航程耗尽的过程,该过程介于整个鱼雷攻击过程中控制发射武器观察攻击效果两个阶段之间。通过分析鱼雷射击过程七阶段弹道流程,建立了声自导鱼雷的目标检测模型和鱼雷自导作用距离模型,建立了尾流自导鱼雷的尾流特性模型、尾流区域几何模型和尾流检测模型,建立了目标几何模型、鱼雷命中判断模型和快速命中判断模型等qkgag8879环亚手机|首页主页

关键词:潜艇;鱼雷射击;弹道流程;发现模型;命中判断模型qkgag8879环亚手机|首页主页

中图分类号:TJ630.34E920.2????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-0873-07qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803013qkgag8879环亚手机|首页主页

Modeling of Submarine Torpedo-Launching Simulationqkgag8879环亚手机|首页主页

Wu Jinping, Mao Junchao, Ding Wenqiangqkgag8879环亚手机|首页主页

(Navy Submarine Academy, Qingdao, Qingdao 266100, China,)qkgag8879环亚手机|首页主页

Abstract: In order to lay foundation for modeling and simulation of operation problems such as torpedo attacking, torpedo operation application and torpedo operation effectiveness analysis, etc., the model of submarine torpedo-launching is built in the way of qualitative analysis and classical mathematics. As an important composition of submarine torpedo-attacking, torpedo-launching mainly means the course from torpedo out-tube to hitting target or voyage end, which is between the stage of “controlling weapon launching” and “observing attack effectiveness” during the whole torpedo-attacking course. Through analyzing the seven-stage trajectory process of torpedo-launching, the target detecting model and acoustic homing range model of acoustic homing torpedo are built. The wake characteristics model, the wake area geometrical model and the wake detecting model of wake homing torpedo are established. The target geometrical model, torpedo hitting judgment model and torpedo rapid hitting judgment model are also set up.qkgag8879环亚手机|首页主页

Keywords: submarine; torpedo launching; trajectory process; finding model; hitting judgment modelqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

超声场中凹球面内受束微泡的动力学行为研究qkgag8879环亚手机|首页主页

胡继文,孙佳娜qkgag8879环亚手机|首页主页

(南华大学数理学院,湖南 衡阳 421001)qkgag8879环亚手机|首页主页

摘要:超声场中利用超声造影剂微泡UCA(ultrasound contrast agent)与凹球面间的相互作用来了解微泡在血管壁附近的声响应。基于虚像法及壁面的声反射效应,建立了一个UCA微泡在凹球形面内的动力学模型,通过数值计算分析了受束微泡的动力学行为。结果表明:在壁面附近时微泡振动受到压制,且刚性壁面对微泡振动的抑制比柔性壁面强;凹球面半径越小,或凹球面中心角越大,微泡振动越易受到抑制;在完全封闭球面内,球面半径越大,对微泡振动影响越弱。该模型为理解超声微泡在血管内的动力学响应及其在超声影像和药物传递中的应用提供理论参考。qkgag8879环亚手机|首页主页

关键词:超声造影剂微泡;超声;凹球面;动力学响应qkgag8879环亚手机|首页主页

中图分类号:O422.6; TP391.9???? 文献标识码:A????? 文章编号:1004-731X (2018) 03-0880-06qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803014qkgag8879环亚手机|首页主页

Dynamics of Microbubble Confined in Concave Wall in Ultrasound Filedqkgag8879环亚手机|首页主页

Hu Jiwen, Sun Jianaqkgag8879环亚手机|首页主页

(College of Mathematics and Physics, University of South China, Hengyang 421001, China)qkgag8879环亚手机|首页主页

Abstract:The interactions between an ultrasound contrast agent (UCA) microbubble and a concave surface can be applied to understanding of the response of the UCA near blood vessel wall in ultrasound field. A dynamics model of microbubble near a concave wall is presented by a virtual image method and the acoustic reflection effects of the surface. The dynamic behavior of the microbubble is analyzed by numerical calculation. The results show that the microbubble vibration is suppressed near the wall. Inhibitory effects to microbubble vibration near rigid wall are stronger than that of near elastic wall. The microbubble vibration is easier to be suppressed with smaller concave radius or central angle of the concave wall. In the fully enclosed sphere, the larger the sphere radius is, the weaker the effect on the microbubble vibration becomes. This simulation model may provide reference for understanding the dynamics response of microbubble in vessel, and its application in ultrasound contrast imaging and drug delivery.qkgag8879环亚手机|首页主页

Keywords:UCA microbubble; ultrasound; concave wall; dynamic responseqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

学习型社区用户行为演化仿真研究qkgag8879环亚手机|首页主页

蒋丽娜1,单晓红2,刘晓燕2,李红1*qkgag8879环亚手机|首页主页

1.北京航空航天大学经济管理学院,北京 1000222.北京工业大学经济与管理学院,北京 100124qkgag8879环亚手机|首页主页

摘要:学习型网络社区作为以分享知识为主要目的平台,其中用户的参与行为与其他网络社区有所差异。基于行为经济学中心理账户理论,结合结构方程模型分析用户参与行为的影响因素,并基于人工系统的社会计算建模方法构建仿真模型,在NETLOGO仿真平台中进行对比分析,探索总结其演化规律。研究得到学习型社区中用户的心理账户包括获得知识学习兴趣归属感,以及时间账户。根据仿真实验对比,为学习型社区的管理者改进社区管理、提高用户黏度提供决策依据。qkgag8879环亚手机|首页主页

关键词:学习型网络社区;心理账户;用户行为;演化;社会计算qkgag8879环亚手机|首页主页

中图分类号:TP391.9????? 文献标识码:A??? 文章编号:1004-731X (2018) 03-0886-09qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803015qkgag8879环亚手机|首页主页

Evolutionary Simulation on User Behavior of Learning-Oriented Network Communityqkgag8879环亚手机|首页主页

Jiang Lina1, Shan Xiaohong2, Liu Xiaoyan2, Li Hong1*qkgag8879环亚手机|首页主页

(1. Beihang University, School of Economics and Management, Beijing 100022, China; 2. Beijing University of Technology, School of Economics and Management, Beijing 100124, China)qkgag8879环亚手机|首页主页

Abstract: As the Learning-Oriented network platform aims to share knowledge, its users’ behavior is different from that of other network communities. Based on the Mental Accounting Theory, affecting factors of the users’ behavior is analyzed with Structural Equation Model. The simulation model using social computing method is established. This paper makes the comparative analysis on the NETLOGO simulation platform to explore and summarize the rules of users’ behavior. The final mental accounts including "Gaining Knowledge", "Learning Interest", "Sense of Belonging", and "Time". According to the conclusions and experiments, This paper provides the basis of decision making for the managers of Learning-Oriented network community to improve users’ vitality.qkgag8879环亚手机|首页主页

Keywords: learning-oriented network community; mental accounting; user behavior; evolution; social computingqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

信号级单脉冲跟踪雷达仿真系统设计与实现qkgag8879环亚手机|首页主页

尚朝轩1,赵杨1*,韩壮志1,韩宁2qkgag8879环亚手机|首页主页

(1. 陆军工程大学石家庄校区,河北 石家庄 050003; 2. 军械技术研究所,河北 石家庄 050003)qkgag8879环亚手机|首页主页

摘要:针对跟踪雷达仿真系统中仿真粒度与跟踪控制反馈难以兼容的问题,基于SystemVue仿真平台,构建完整的信号级的单脉冲跟踪雷达仿真系统。围绕仿真系统的设计需求,对仿真系统进行了分层,构建了仿真框架,将仿真过程中的关键环节与技术进行了剖析,并给出了在信号级仿真条件下,加入距离、角度跟踪环路之后的仿真结果,验证了整个单脉冲雷达仿真系统的可行性。该系统的实现对于信息化战争条件下单脉冲雷达的系统设计、装备发展论证、装备试验鉴定及评估以及作战训练及演练具有重要意义,为未来进一步完善与推进数字雷达仿真系统奠定了基础。qkgag8879环亚手机|首页主页

关键词:跟踪雷达;仿真系统;单脉冲;信号级;SystemVueqkgag8879环亚手机|首页主页

中图分类号:TN971????? ????文献标识码:A???????? 文章编号:1004-731X (2018) 03-0895-11qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803016qkgag8879环亚手机|首页主页

Design and Implementation of Signal Level Mono-Pulse Tracking Radar Simulation Systemqkgag8879环亚手机|首页主页

Shang Chaoxuan1, Zhao Yang1*, Han Zhuangzhi1, Han Ning2qkgag8879环亚手机|首页主页

(1. Army Engineering University, Shijiazhuang 050003, China; 2. Instrument Technology Research Institute, Shijiazhuang 050003, China)qkgag8879环亚手机|首页主页

Abstract: In view of the poor compatibility between the particle size of simulation and tracking feedback control in tracking radar simulation system, a signal level mono-pulse tracking radar simulation system is constructed based on SystemVue simulation platform. Simulation system is layered and simulation framework is built according to the requirements of the simulation system. The key technologies in the process of simulation are analyzed, and the simulation results with distance and angle tracking loop are given. System implementation is of great significance for mono-pulse radar system design, demonstration, equipment development appraisal as well as combat training and practice under the condition of information-based war, which also lays a foundation for further improvement and promotion of digital radar simulation system.qkgag8879环亚手机|首页主页

Keywords: tracking radar; simulation system; mono-pulse; signal level; SystemVueqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

海上溢油应急三维演练系统的研究与实现qkgag8879环亚手机|首页主页

邹长军,尹勇,刘秀文,李海江qkgag8879环亚手机|首页主页

(大连海事大学航海动态仿真和控制实验室,大连 116021)qkgag8879环亚手机|首页主页

摘要:针对当前溢油应急演练成本高昂,受到时空和天气环境等的限制,且对环境具有危害性,实际参与人员无法在各种极端天气环境中得到足够充分训练等因素的影响,提出并实现了一种基于虚拟现实技术的溢油应急演练系统。采用经典的溢油模型建立了基于质点弹簧模型的围油栏运动模型,实现了基于多边形裁剪的溢油与围油栏运动交互。经过系统测试,运行稳定流畅,表明论文设计的系统架构和相关关键技术的正确性和可靠性。qkgag8879环亚手机|首页主页

关键词:虚拟现实;海上溢油;溢油交互;应急演练系统qkgag8879环亚手机|首页主页

中图分类号:TP391?????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-0906-08qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803017qkgag8879环亚手机|首页主页

Research and Implementation of 3D Emergency Drilling System of Oil Spill at Seaqkgag8879环亚手机|首页主页

Zou Changjun, Yin Yong, Liu Xiuwen, Li Haijiangqkgag8879环亚手机|首页主页

(Key Lab of Marine Simulation & Control Lab, Dalian Maritime University, Dalian 116021, China)qkgag8879环亚手机|首页主页

Abstract: In view of the high cost, constraint to time and space, harmfulness to the environmental as well as insufficient training in extreme weather condition in current oil spill emergency drilling system, a 3D emergency drilling system of oil spill based on virtual reality is presented and implemented. The classical oil spill model is adopted to establish an oil boom driven model based on mass-spring system. Interactive operation between oil boom and oil film based on polygon clipping is realized. The system runs stably and smoothly in the system test, which fully proves the correctness and reliability of the system architecture and the related key technologies.qkgag8879环亚手机|首页主页

Keywords: virtual reality; oil spill at sea; oil spill interaction; emergency drilling systemqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

GSHP机组数学建模及仿真应用qkgag8879环亚手机|首页主页

李慧1,杨少刚2,刘凤英1qkgag8879环亚手机|首页主页

1.山东建筑大学 可再生能源建筑利用技术教育部重点实验室,山东 济南2501012. 珠海中建兴业绿色建筑设计研究院有限公司,广东 珠海 519085qkgag8879环亚手机|首页主页

摘要:为实现地源热泵 (Ground source heat pump, GSHP) 系统仿真平台的建立基于GSHP机组的机理知识和样本数据采用多元非线性回归方法,建立GSHP机组半经验数学模型,开发GSHP机组仿真模块Type223并通过仿真分析,验证了模块的准确性利用Type223模块搭建了GSHP系统TRNSYS(Transient System Simulation Program)仿真平台,研究了变频控制下地源热泵系统地源侧变流量的运行特性。结果显示:相对于定流量系统,变流量系统的GSHP机组运行能耗有所增加,但地源侧循环泵的运行能耗大幅度降低,整个制冷期地源侧总能耗的节能率可达7.99 %qkgag8879环亚手机|首页主页

关键词:GSHP;数学模型;多元非线性回归;变频控制;能耗模拟qkgag8879环亚手机|首页主页

中图分类号:Tk52TP15????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-0914-08qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803018qkgag8879环亚手机|首页主页

Mathematical Modeling and Simulation Application of GSHP Unitqkgag8879环亚手机|首页主页

Li Hui1, Yang Shaogang2, Liu Fengying1qkgag8879环亚手机|首页主页

(1.Key Laboratory of Renewable Energy Technologies for Buildings, Ministry of Education, Shandong Jianzhu University, Ji’nan 250101, China; 2. Zhuhai CSCEC Singyes Green Building Design & Research Institute Co., Ltd., Zhuhai 519085, China)qkgag8879环亚手机|首页主页

Abstract: For the purpose of building a simulation platform of GSHP system, a semi empirical mathematical model of GSHP unit adopting multiple nonlinear regression method was established based on the mechanism knowledge and the sample data of GSHP unit. A GSHP unit module was developed, namely Type223, and its accuracy was verified by simulation analysis. A TRNSYS simulation platform of GSHP system was built by Type223 module. The operation characteristics of variable flow on ground source side of GSHP system was studied under variable frequency control. The results showed that, the energy consumption of GSHP unit is increased compared with the constant flow rate system, but the energy consumption of circle pump is greatly reduced. The energy saving rate is 6.47% during the whole cooling period.qkgag8879环亚手机|首页主页

Keywords: GSHP; mathematical model; multiple nonlinear regression; variable frequency control; energy simulationqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

高速列车模拟驾驶动力学仿真系统开发qkgag8879环亚手机|首页主页

孙壮,戴焕云,干锋,高浩qkgag8879环亚手机|首页主页

(西南交通大学 牵引动力国家重点实验室,四川 成都 610031)qkgag8879环亚手机|首页主页

摘要:为了真实地模拟高速列车在运行时的各种姿态,在Stewart六自由度运动平台的基础上,采用VC++编程语言开发了高速列车模拟驾驶动力学仿真系统和模拟操纵界面。建立了高速列车系统动力学模型,头车为纵向、横向和垂向耦合的详细模型,其他车为质量块纵向模型。在仿真过程中动力学模型根据线路数据和司机的操作指令实时更新,采用新型显示积分方法翟方法对动力学模型进行求解。计算出高速列车头车车体各自由度在不同工况及控制条件下的响应,将车体加速度作为六自由度运动平台的驱动,形成半实物半虚拟的模拟驾驶动力学仿真平台。采集了实际车辆车体运行加速度数据与仿真进行对比,相关结果较接近,并应用于模拟驾驶系统进行司机培训。qkgag8879环亚手机|首页主页

关键词:高速列车;模拟驾驶;动力学仿真;实时计算;运动平台qkgag8879环亚手机|首页主页

中图分类号:U271.91 ??????文献标识码:A?????? 文章编号:1004-731X (2018) 03-0921-09qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803019qkgag8879环亚手机|首页主页

Development of Simulated Driving Dynamics Simulation System of High-Speed Trainqkgag8879环亚手机|首页主页

Sun Zhuang, Dai Huanyun, Gan Feng, GaoHaoqkgag8879环亚手机|首页主页

(Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031, China)qkgag8879环亚手机|首页主页

Abstract: In order to truly simulate the moving postures of the high-speed train at run time, based on six degrees of freedom Stewart motion platform, dynamics simulation system and simulation operation interface are developed by VC++ programming language. The dynamics model of high-speed train system is presented in this paper, whose first vehicle is a detailed coupled model including longitudinal, lateral and vertical DOF (Degree of Freedom), and other vehicles are the mass models only with the longitudinal DOF. In the process of the simulation, the dynamics model is updated in real time according to line data and driver's operation, and then dynamics model is solved by a new display integral method (zhai method). The responses of all DOF of high-speed train head car body in different working conditions and control conditions are calculated. The body acceleration is applied to drive the six DOF motion platform forming a simulated driving dynamics platform, which is both physical and virtual. The availability is carried out based on the dynamic simulations and field test results. The simulated driving dynamics system is successfully applied to drivers training.qkgag8879环亚手机|首页主页

Keywords: high-speed train; simulation driving; dynamics simulation; real-time calculating; motion platformqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

一种改进的CS算法及其在微电网优化中的应用qkgag8879环亚手机|首页主页

刘长良1,王鹏飞2,刘帅1,2,罗磊2,回振桥2qkgag8879环亚手机|首页主页

(1.华北电力大学新能源电力系统国家重点实验室,北京 1000852.华北电力大学控制与计算机学院,保定 071003)qkgag8879环亚手机|首页主页

摘要:为解决布谷鸟搜索算法存在的后期收敛速度慢,求解精度低以及容易陷入局部最优点等问题,提出了一种改进的布谷鸟搜索算法:CS-EO搜索算法。在该搜索算法中,通过将布谷鸟算法收敛速度快和全局搜索的优点与极值动力学优化算法强大的局部搜索能力进行有机的结合,在保证布谷鸟算法求解速度的前提下,提高了布谷鸟算法的求解精度。函数寻优测试的仿真结果表明改进的布谷鸟搜索算法相较于布谷鸟搜索算法以及粒子群算法都具有更好的寻优性能。最后将此算法应用于微电网的负荷优化调度中,取得了较为令人满意的结果。qkgag8879环亚手机|首页主页

关键词:布谷鸟算法;极值动力学优化算法;微网;优化调度qkgag8879环亚手机|首页主页

中图分类号:TP301.6????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-0930-07qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803020qkgag8879环亚手机|首页主页

An Improved CS Algorithm and Its Application in Micro Grid Optimizationqkgag8879环亚手机|首页主页

Liu Changliang1, Wang Pengfei2, Liu Shuai1,2, Luo Lei2, Hui Zhenqiao2qkgag8879环亚手机|首页主页

(1.State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Changping District, Beijing 102206, China; 2.North China Electric Power University, Baoding 071003, China)qkgag8879环亚手机|首页主页

Abstract: In order to solve the shortcomings in cuckoo search algorithm, such as slow convergence, low accuracy and easy to fall into the local optimal solution, an improved cuckoo search algorithm is proposed: CS-EO search algorithm. In this search algorithm, the fast convergence speed and global searching advantage of CS algorithm and the strong local search ability of EO algorithm are combined organically. Under the premise of guaranteeing the solving speed, the accuracy of the solution is improved. The results of optimization test functions show that CS- EO algorithm has better optimization performance compared with CS algorithm and PSO algorithm. The algorithm is applied to the load optimal dispatch of micro grid, and the result is satisfying.qkgag8879环亚手机|首页主页

Keywords: cuckoo search algorithm; EO algorithm; micro grid; operation optimizationqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

船用发电柴油机调速器的数学建模和仿真研究qkgag8879环亚手机|首页主页

陈坚qkgag8879环亚手机|首页主页

(1. 集美大学 轮机工程学院,福建 厦门 3610212. 福建省船舶与海洋工程重点实验室,福建 厦门 361021)qkgag8879环亚手机|首页主页

摘要:船用发电柴油机的转速控制和负荷限制是由液压调速器来实现的,液压调速器的特性直接决定了发电机组的性能,加强学员对液压调速器工作特性了解和训练是轮机模拟器训练的重要内容之一。在现有轮机模拟器中,发电柴油机液压调速器的仿真模型过于简化,无法进行更深层次的培训和训练任务。根据调速器的工作原理和轮机模拟器训练目的,建立了UG8调速器的数学模型,结合柴油机Seiliger模型进行了仿真,并将仿真结果与台架实验进行对比分析,仿真误差小于3%,表明了调速器建模的准确性与可靠性。该模型在轮机模拟器的研制与培训中具有一定的实用价值。qkgag8879环亚手机|首页主页

关键词:船用四冲程柴油机;液压调速器;Seiligerqkgag8879环亚手机|首页主页

中图分类号:TP.391.9????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-0937-06qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803021qkgag8879环亚手机|首页主页

Mathematical Modeling and Simulation of Hydraulic Governor for Marine Diesel Engineqkgag8879环亚手机|首页主页

Chen Jianqkgag8879环亚手机|首页主页

(1. School of Marine Engineering, Jimei University, Xiamen 361021, China; 2. Fujian Provincial Key Laboratory of Naval Architecture and Ocean Engineering, Xiamen 361021, China)qkgag8879环亚手机|首页主页

Abstract: The speed control and load limit of marine diesel engine are implemented by hydraulic governor, of which the characteristics directly determines the performance of generator set. Therefore, it is an important content of marine engine room simulator training to strengthen the students’ training and understanding of the working characteristics of the hydraulic governor. In the existing marine engine room simulators, the simulation model of hydraulic governor is too simple to carry out further training tasks. According to the working principle of hydraulic governor and the training purpose of marine engine room simulator, the mathematical model of UG-8 hydraulic governor is established. Combining with the diesel engine Seiliger model, simulation is conducted and the simulation error is less than 3% compared with the bench test, which indicates the accuracy and reliability of the proposed hydraulic governor model. This model has certain practical value in the development and training of marine engine room simulator.qkgag8879环亚手机|首页主页

Keywords: marine four-stroke diesel engine; hydraulic governor; Seiliger model; simulationqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

新型运动提示客观测试技术在A320模拟机的实现qkgag8879环亚手机|首页主页

杨洋qkgag8879环亚手机|首页主页

(四川航空集团有限责任公司培训中心,成都 611731)qkgag8879环亚手机|首页主页

摘要:飞行员的主观评价一直是运动提示系统的性能和算法调校的依据,也是民航局方鉴定全动飞行模拟机的主要参考标准。受飞行员的主观因素差异的影响,每一台模拟机的运动提示各不相同。为客观评价A320全动飞行模拟机运动提示系统的逼真度,基于国际民航组织于2015年正式发布的OMCT测试技术原理并通过改装加以实现,通过测量信号从飞行仿真模型到运动平台的信号传输的模数和相位差,获得运动提示系统在包线范围内的频率响应特征和传输延迟,并进一步使用OMCT对洗出算法参数进行优化,通过时域测试对比证实动态特性改善明显qkgag8879环亚手机|首页主页

关键词:运动提示系统;频率响应;运动驱动算法;比力;洗出qkgag8879环亚手机|首页主页

中图分类号:V216.7??????? 文献标识码:A??????? 文章编号:1004-731X (2018) 03-0943-11qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803022qkgag8879环亚手机|首页主页

Implement Objective Motion Cueing Test on the A320 Full Flight Simulatorqkgag8879环亚手机|首页主页

Yang Yangqkgag8879环亚手机|首页主页

(Training Centre of Sichuan Airlines Group Co., Ltd, Chengdu 611731, China)qkgag8879环亚手机|首页主页

Abstract: Pilot’s subjective evaluation has been used for motion cueing tuning and calibration for years, and widely recognized as the major criteria in civil full flight simulator qualification. Due to the diversity of human perception, it is impossible to reproduce the same motion cueing on different simulators. In order to objectively evaluate the A320 full flight simulator motion cueing system performance, an engineering practice has been carried out recently by implementation of the OMCT(Objective Motion Cueing Test)which was published by ICAO in 2015. It aims to measure the signal transport delay between the flight model and motion platform, through analyzing the system frequency response within motion envelop, furthermore such test is also used to optimize the parameters of the motion drive washout algorithm. After comparison with time domain test, the system dynamic characteristics can be found significantly improved after tuning.qkgag8879环亚手机|首页主页

Keywords: motion cueing system; frequency response; motion drive algorithm; specific force; washoutqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

一种基于混沌的新型图像加密算法qkgag8879环亚手机|首页主页

李琳,孔留勇qkgag8879环亚手机|首页主页

(上海理工大学光电信息与计算机工程学院控制科学与工程系,上海200093)qkgag8879环亚手机|首页主页

摘要:针对单一混沌系统安全性低问题,提出了一种基于Chen混沌系统,细胞自动机和DNA的图像加密算法。利用3- Chen混沌系统生成伪随机序列。在该序列改造的基础上完成对明文图像和细胞自动机的DNA动态编码。对明文图像DNA序列进行分块重组,以组为单位与细胞自动机DNA序列进行混合运算并引入密文交错扩散机制得到最终的DNA序列,将其解码后得到密文图像。进行了计算机仿真分析和对比,通过对密钥空间、敏感性、差分特性、信息熵的分析与测试,表明该算法安全性较好且易于实现,具有较大的应用前景。qkgag8879环亚手机|首页主页

关键词:图像加密;细胞自动机;混沌系统;DNA编码;qkgag8879环亚手机|首页主页

中图分类号:TP309.7???????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-0954-08qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803023qkgag8879环亚手机|首页主页

A New Image Encryption Algorithm Based On Chaosqkgag8879环亚手机|首页主页

Li Lin, Kong Liuyongqkgag8879环亚手机|首页主页

(School of Optical-Electrical & Computer Engineering, University of Shanghai for Science & Technology, Shanghai 200093, China)qkgag8879环亚手机|首页主页

Abstract:In order to increase the security of single chaotic systems, this paper proposesa new image encryption algorithm based on Chen chaotic system, cellular automaton and DNA. The 3-dimension Chen chaotic system is used to generate a pseudo random sequence. The DNA dynamic encoding on plain-text image and cellular automation is completed based on the transformed sequence. The DNA sequence of the plain-text image is divided into blocks, which arethen reorganized. These new groups of the DNA sequence of plain-text are combined with the DNA sequence of cellular automation to carry out the mixed operation with the cipher-text cross diffusion mechanism so as to get the final DNA sequence. The encrypted image is obtained by decoding the obtainedfinal DNA sequence. The simulation results show thatthe algorithm has the advantages of simple structure, high security and is easier to achieve, so it has great application prospects.qkgag8879环亚手机|首页主页

Keywords: image encryption; cellular automaton; chaos systems; DNA encodingqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

一种基于Bezier曲线的移动机器人轨迹规划新方法qkgag8879环亚手机|首页主页

孙雷,张丽爽,周璐,张雪波qkgag8879环亚手机|首页主页

(南开大学机器人与信息自动化研究所,天津 300353)qkgag8879环亚手机|首页主页

摘要:针对移动机器人的轨迹规划问题,提出了一种基于Bezier曲线的有效解决方法。相对于现有轨迹规划方法,此方法所产生的路径长度更短,轨迹所用时间更短。将轨迹规划问题分为路径规划和速度规划两步来解决。采用Bezier曲线光滑连接线段序列进行路径规划以减小路径长度;考虑整条路径的曲率连续性,证明了Bezier曲线的次数至少为5次。以差动轮式机器人为例,产生了满足其运动学和动力学约束的速度命令,使机器人能平稳光滑地跟踪所规划的路径。仿真结果证明了所提方法的有效性。qkgag8879环亚手机|首页主页

关键词:轨迹规划;路径规划;Bezier曲线;速度规划qkgag8879环亚手机|首页主页

中图分类号:TP242.6?????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-0962-07qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803024qkgag8879环亚手机|首页主页

A New Method on Trajectory Planning for Mobile Robots Using Bezier Curvesqkgag8879环亚手机|首页主页

Sun Lei, Zhang Lishuang, Zhou Lu, Zhang Xueboqkgag8879环亚手机|首页主页

(Institute of Robotics and Automatic Information System, Nankai University, Tianjin 300353, China)qkgag8879环亚手机|首页主页

Abstract:In view ofthe trajectory planning for the mobile robots, an efficient method based on Bezier curves is proposed, which produces better solution with shorter path and faster trajectory, compared with the existing methods. The problem of trajectory planning is divided into path planning and velocity planning. A Bezier curve is used to connect each two line-segments to obtain shorter paths. It is proved that the order of the used Bezier curves is at least five to ensure the curvature continuity of the whole path. Taking a differential-driven wheeled mobile as an example, to follow the planned path steadily and smoothly, velocity profile satisfying the constraints of kinematics and dynamics is generated. The simulation results verify the feasibility of the method proposed in this paper.qkgag8879环亚手机|首页主页

Keywords: trajectory planning; path planning; Bezier curves; velocity planningqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

基于改进在线核极限学习机的蓄电池SOC预测qkgag8879环亚手机|首页主页

孙玉坤1,2,李曼曼1,黄永红1qkgag8879环亚手机|首页主页

(1. 江苏大学电气信息工程学院,江苏 镇江 2120132. 南京工程学院电力工程学院,江苏 南京 211167)qkgag8879环亚手机|首页主页

摘要:为对蓄电池荷电状态(SOC)进行准确、快速的在线预测,提出一种改进的在线核极限学习机方法(IO-KELM),以电池工作电压、电流和表面温度为输入量,电池SOC为输出量建立预测模型。IO-KELM采用Cholesky分解将核极限学习机(KELM)从离线模式扩展到在线模式,使网络输出权值随新样本的逐次加入递推求解更新,以简单的四则运算替代复杂的矩阵求逆,提高了网络的泛化能力和在线学习效率。仿真实验表明,相比于KELM及直接在线建模的KELM算法(DO-KELM)IO-KELM具有更高的预测精度、更强的鲁棒性及更快的计算速度。qkgag8879环亚手机|首页主页

关键词:蓄电池;荷电状态;核极限学习机;Cholesky分解;在线预测qkgag8879环亚手机|首页主页

中图分类号:TM912??????? 文献标识码:A???????? 文章编号:1004-731X (2018) 03-0969-07qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803025qkgag8879环亚手机|首页主页

SOC Prediction of Battery Based on Improved Online Kernel Extreme Learning Machineqkgag8879环亚手机|首页主页

Sun Yukun1,2, Li Manman1, Huang Yonghong1qkgag8879环亚手机|首页主页

(1. School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China; 2. School of Electrical Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China)qkgag8879环亚手机|首页主页

Abstract: In order to conduct an accurate and fast online prediction for the state of charge (SOC) of battery, an improved online kernel extreme learning machine (IO-KELM) algorithm is proposed. In this work, a prediction model is presented with charge voltage, current and surface temperature as inputs and SOC of battery as output. The IO-KELM adopts Cholesky factorization to extend the kernel extreme learning machine (KELM) from offline mode to online mode. Meanwhile, the output weights of the network are updated by successive join of the new samples, and the matrix inverse operation is replaced with arithmetic. Hence, the generalization ability and the computational efficiency of the model are improved. Compared with KELM and direct online-KELM (DO-KELM) algorithm, simulation results indicate that the IO-KELM has higher prediction accuracy, stronger robustness and faster calculation speed.qkgag8879环亚手机|首页主页

Keywords: battery; state of charge (SOC); kernel extreme learning machine (KELM); Cholesky factorization; online predictionqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

CT检查预约规则的仿真模拟研究qkgag8879环亚手机|首页主页

李军1,林雪梅1,周杰2qkgag8879环亚手机|首页主页

(1. 西南交通大学经济管理学院,四川 成都 6100312.四川师范大学商学院,四川 成都 610101)qkgag8879环亚手机|首页主页

摘要:以病人等待时间、检查室空闲时间及其线性总成本为性能指标,利用ExtendSim建立离散事件仿真模型,采用重复删除法得到9种基本预约规则和9种调整预约规则的性能指标估计值及其样本数据,采用方差分析和有效边界分析比较不同分时预约规则对该排队系统(的影响。结果表明:从不同利益主体(病人、医院或双方)出发,最优预约规则都具有时间槽长度先增大后减小的特点,与以往基于单阶段、单服务台的研究结论相同,而每个时间槽的预约人数变化规律和针对强扫病人调整的方法不同qkgag8879环亚手机|首页主页

关键词:预约规则;CT检查;离散事件仿真;ExtendSimqkgag8879环亚手机|首页主页

中图分类号:C934, N945.13????? 文献标识码:A????? 文章编号:1004-731X (2018) 03-0976-11qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803026qkgag8879环亚手机|首页主页

A Simulation Study of Appointment Rulesin CT Departmentqkgag8879环亚手机|首页主页

Li Jun1, LinXuemei1, ZhouJie2qkgag8879环亚手机|首页主页

(1. School of Economics and Management, SouthwestJiaotong University, Chengdu 610031, China;2.Business School, Sichuan Normal University, Chengdu 610101, China)qkgag8879环亚手机|首页主页

Abstract:A discrete event simulation model was established onExtendSimsoftware, , with the average patient waiting time, average idle time of the examination rooms and total cost which wasthe linearlyweighted sum of them being as performance measures.Estimated value and sample data of these performance measures of 9 basic appointment scheduling rules and 9 adjusted ones were produced by the de-duplication methodso that analysis of variance and efficient frontier were carried out to compare the effects of different “staggered reservation rules” on this queuing system.It was showed that, for different beneficiaries (patients, hospital or both), the appointment scheduling rules characterized by “appointment intervals gradually increase towardthe middle and then decrease slightly at the end of thesession” perform optimally which hadbeen concluded based on the single-phase, sing-server queuing system in previous research, but the change law of number of patients in each slot and method of adjustment for the enhanced scan patients weredifferent.qkgag8879环亚手机|首页主页

Keywords: appointment scheduling rule; CT examination; discrete event simulation; ExtendSimqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

射频体目标辐射近场断层二维成像算法研究qkgag8879环亚手机|首页主页

全绍辉1,史长泰1,崔旭旺1,石彬2qkgag8879环亚手机|首页主页

(1. 北京航空航天大学,北京 1000832. 北京仿真中心,北京 100854)qkgag8879环亚手机|首页主页

摘要:针对一个射频体目标的不同观察面,给出两种近场辐射断层成像的二维成像算法。在利用FEKO模型进行仿真并导出近场数据的基础上,对模型的横断面和冠状面分别进行二维近场辐射成像。通过改变近场扫描点数以及接收天线与模型距离等参数,研究了不同变量对成像分辨率的影响。在对仿真计算结果进行分析之后,将本算法与其他成像算法进行比较,探讨了各自的优势与局限性。最后将算法扩展到应用层面,研究了真实场景中存在干扰物体情况下成像的变化及相应的解决方案,使研究具有一定的实际应用价值。qkgag8879环亚手机|首页主页

关键词:近场辐射;二维成像;FEKO;冠状面;横断面qkgag8879环亚手机|首页主页

中图分类号:TP391.9??????? 文献标识码:A??????? 文章编号:1004-731X (2018) 03-0986-08qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803027qkgag8879环亚手机|首页主页

Research on Two-Dimensional Imaging Algorithm of Tomography for Near-Field Radiation of RF Objectsqkgag8879环亚手机|首页主页

Quan Shaohui1, Shi Changtai1, Cui Xuwang1, Shi Bin2qkgag8879环亚手机|首页主页

(1. Beihang University, Beijing 100083, China; 2. Beijing Simulation Center, Beijing 100854, China)qkgag8879环亚手机|首页主页

Abstract: Two two-dimensional imaging algorithms of tomography are presented for observing different sections of RF objects. Two-dimensional images of the cross and coronal sections of the model are obtained based on the near-field radiation data calculated by FEKO. The effects of different variables on the imaging resolution are studied by changing near field scanning points and distance between the observation plane and RF objects. After the analysis of the simulation results, the proposed algorithms are compared with other imaging algorithms from different aspects. The advantages and limitations are discussed. The change of images and the corresponding solution are studied under the presence of interference objects, so that the research has certain practical application value.qkgag8879环亚手机|首页主页

Keywords: near-field radiation; two-dimensional imaging; FEKO; coronal plane; cross planeqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

冗余度机器人变负载预测模糊自适应滑模控制qkgag8879环亚手机|首页主页

贺军1,骆敏舟2,赵江海2,徐林森2,李涛2qkgag8879环亚手机|首页主页

(1. 中国科学技术大学信息科学技术学院,安徽 合肥 2300262. 中国科学院合肥物质科学研究院先进制造技术研究所,江苏 常州 213164)qkgag8879环亚手机|首页主页

摘要:提出了基于变负载卡尔曼预测模糊自适应滑模控制算法(AFSMCK),该算法可实现冗余度机器人在变负载情况下的精确控制。该方法有效的解决了机器人因模型不确定以及末端变负载对机器人系统的影响,实现机器人的稳定控制。设计出一个基于迭代算法的卡尔曼预测控制器可精确预测变负载的大小。采用自适应模糊逻辑算法,逼近滑模控制器中的切换增益,消除滑模控制的抖动问题。根据李亚普洛夫理论设计了滑模控制律和自适应控制律,进一步保证了闭环系统的稳定性。提出的理论和控制方法通过仿真实验进一步得到了验证。qkgag8879环亚手机|首页主页

关键词:机器人控制;模糊逻辑;自适应控制;冗余度机器人;卡尔曼预测控制qkgag8879环亚手机|首页主页

中图分类号:TP391.9????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-0994-08qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803028qkgag8879环亚手机|首页主页

Adaptive Fuzzy Sliding Mode Controller with Predictive Control for Redundant Manipulators with Variable Payloadqkgag8879环亚手机|首页主页

He Jun1,2, Luo Minzhou2, Zhao Jianghai2, Xu Linsen2, Li Tao2qkgag8879环亚手机|首页主页

(1. School of Information Science and Technology, University of Science and Technology of China,Hefei 230026, China; 2. Institute of Advanced Manufacturing Technology, Hefei Institute of Physical Science, Chinese Academy of Sciences, Changzhou 213164, China)qkgag8879环亚手机|首页主页

Abstract: This paper presents an adaptive fuzzy sliding mode controller with Kalman predictive control (AFSMCK) for the redundant robotic manipulator handling a variable payload to achieve a precise trajectory tracking in the task space. This approach could be applied to solve the problems caused by the variable payload and model uncertainties. A Kalman predictive controller using the recursive algorithm is presented for an accurate prediction of a variable payload. The adaptive fuzzy logic algorithm is designed to approximate the parameters of the sliding mode controller to avoid chattering in real time. Lyapunov theory is applied to guarantee the stability of the proposed closed-loop robotic system. The effectiveness of the proposed control approach and theoretical discussion are proved by comparative simulation on a seven-link robot.qkgag8879环亚手机|首页主页

Keywords: robot controlfuzzy logicadaptive controlredundant manipulatorsKalman predictive controlqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

基于多新息近似最小一乘算法PMSM参数辨识qkgag8879环亚手机|首页主页

吴定会,张建宇,沈艳霞,纪志成qkgag8879环亚手机|首页主页

(江南大学 轻工过程先进控制教育部重点实验室,江苏 无锡 214122)qkgag8879环亚手机|首页主页

摘要:针对永磁同步电机受工作环境尖峰噪声信号的影响导致的传统辨识算法辨识结果不精确的问题,提出了多新息近似最小一乘算法。结合永磁同步电机系统电压方程,构建离散辨识模型。采用矢量控制方法控制电机,获得辨识模型输入输出数据,对转子电阻和电感参数进行辨识。仿真结果表明,该算法能够实现在尖峰噪声环境下对永磁同步电机参数的精确辨识。qkgag8879环亚手机|首页主页

关键词:永磁同步电机;SVPWM矢量控制;遗忘因子;多新息近似最小一乘;参数辨识qkgag8879环亚手机|首页主页

中图分类号:TP2 ?????????文献标识码:A???????? 文章编号:1004-731X (2018) 03-1001-07qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803029qkgag8879环亚手机|首页主页

Parameter Identification for PMSM Based on Multi-innovation Approximate Least Absolute Deviation Identification Algorithmqkgag8879环亚手机|首页主页

Wu Dinghui, Zhang Jianyu, Shen Yanxia, Ji Zhichengqkgag8879环亚手机|首页主页

(Key Laboratory of Advanced Process Control for Light Industry, Ministry of Education Jiangnan University, Wuxi 214122, China)qkgag8879环亚手机|首页主页

Abstract: In view of the problem that the results of traditional identification algorithm are not accurate caused by the peak noise signal in the environment, a new algorithm based on the forgetting factor multi-innovation approximate least absolute deviation (MIALAD) identification algorithm is proposed. Combined with the system voltage equation of permanent magnet synchronous motor (PMSM), a discrete identification model is constructed. By using vector control method, the input and output data of the identification model are obtained to identify the rotor resistance and inductance. The simulation results show that this identification algorithm can obtain the accurate parameters of the PMSM model in the peak noise environment.qkgag8879环亚手机|首页主页

Keywords: permanent magnet synchronous motor (PMSM); SVPWM vector control; forgetting factor; multi-innovation approximate least absolute deviation algorithm; parameter identificationqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

3D打印组织工程支架成形过程建模与数值模拟qkgag8879环亚手机|首页主页

陈从平,黄杰光,胡琼,冉艳华,李波qkgag8879环亚手机|首页主页

(三峡大学机械与动力学院,湖北 宜昌 443002)qkgag8879环亚手机|首页主页

摘要:注射式3D打印技术制备组织工程支架过程中,粘性流体材料以微丝状从喷嘴挤出,在基板上逐层布施。在重力、表面张力、粘性力及固化拉力耦合作用下发生铺展、堆积、重融、固化等系列动力学及热力学行为,过程十分复杂。针对上述问题,利用CFD方法模拟均匀分布孔支架的成形过程,借此探究孔隙的成形机理。结果表明,支架成形过程中流体材料主要与基板进行换热冷却,热能从支架顶层向底层传递,越接近基板温度越低,固化率越大;成形过程中固化发生在铺展之后,孔隙大小与铺展时间变化趋势相反;孔隙率随支架层数的增加总体呈减小趋势。qkgag8879环亚手机|首页主页

关键词:3D打印;组织工程支架;孔隙成形机理;孔隙尺寸;孔隙率qkgag8879环亚手机|首页主页

中图分类号:O351.2 ???????文献标识码:A?????? 文章编号:1004-731X (2018) 03-1008-09qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803030qkgag8879环亚手机|首页主页

Modeling and Numerical Simulation of Tissue Engineering Scaffold 3D Printing Processqkgag8879环亚手机|首页主页

Chen Congping, Huang Jieguang, Hu Qiong, Ran Yanhua, Li Boqkgag8879环亚手机|首页主页

(College of Mechanical & Power Engineering, China Three Gorges University, Yichang, 443002, China)qkgag8879环亚手机|首页主页

Abstract: In the process of tissue engineering scaffold fabrication using injecting 3D printing, the viscous fluid material is extruded out with a style of microfilament, which is deposited on a substrate layer by layer. The materials spread, pile up, remelt and solidify as a consequence of the couple effects of gravity, surface tension, viscous force and solidification drag force. Aiming at the above issues, the forming process of scaffold with homogeneously-sized space pores is studied with a CFD approach to research the pore forming mechanism. The results show that the viscous fluid is cooled mainly by the substrate, and heat transfers from the top to the bottom in the scaffold. The fluid’s temperature is lower and the solidification ratio is higher where it’s closer to the substrate. In this paper, under the conditions mentioned, the effect of solidification drag is greater than the viscous force and the surface tension. The viscous fluid spreads and solidifies subsequently when depositing on the substrate. The pores size decreases with the spreading time. With the scaffold layers rising, the overall trend of porosity decreases.qkgag8879环亚手机|首页主页

Keywords: 3D printing; tissue engineering scaffold; pore forming mechanism; pore size; porosityqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

高铁座椅悬置系统振动特性仿真及阻尼比优化qkgag8879环亚手机|首页主页

周长城,于曰伟,赵雷雷qkgag8879环亚手机|首页主页

(山东理工大学 交通与车辆工程学院,山东 淄博 255049)qkgag8879环亚手机|首页主页

摘要:针对高铁座椅悬置系统中存在的阻尼匹配问题,根据1/4车体-座椅垂向振动模型,建立了高铁座椅悬置系统阻尼比优化设计仿真模型;以人体振动舒适性最佳为目标,建立了座椅悬置系统阻尼比优化设计数学模型;以轨道高低不平顺为输入激励,以座椅悬置垂向行程为约束条件,建立了高铁座椅悬置系统阻尼比优化设计方法。通过设计实例及仿真分析可知,阻尼比的设计值能够有效提高座椅的乘坐舒适性,表明所建立的座椅悬置系统阻尼比优化设计方法是可行的。qkgag8879环亚手机|首页主页

关键词:高铁;座椅悬置;阻尼比;优化设计;振动仿真qkgag8879环亚手机|首页主页

中图分类号:U260.1?????? 文献标识码:A??????? 文章编号:1004-731X (2018) 03-1016-07qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803031qkgag8879环亚手机|首页主页

Vibration Simulation and Damping Ratio Optimization of Seat Suspension System for High-Speed Railqkgag8879环亚手机|首页主页

Zhou Changcheng, Yu Yuewei, Zhao Leileiqkgag8879环亚手机|首页主页

(School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, China)qkgag8879环亚手机|首页主页

Abstract: According to the 1/4 body-seat vertical vibration model of high-speed rail, an optimal design simulation model for damping ratio of seat suspension was established. An optimal design mathematical model for damping ratio of seat suspension was built with the optimal ride comfort as the target. Taking the track vertical irregularity as input and the seat suspension vertical stroke as constraint condition, an optimization design method for damping ratio of seat suspension based on track excitation was presented. With a practical example, the damping ratio was designed and validated by simulation. The results show that the damping ratio value design method can effectively improve ride comfort.qkgag8879环亚手机|首页主页

Keywords: high-speed rail; seat suspension; damping ratio; optimization design; vibration simulationqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

基于泰勒有限差分的搅拌罐的离散控制仿真qkgag8879环亚手机|首页主页

张雨浓,丁亚琼,李乐,张德阳,邱斌斌qkgag8879环亚手机|首页主页

(中山大学数据科学与计算机学院,广东 广州 510006qkgag8879环亚手机|首页主页

摘要:通过利用张动力学来处理搅拌罐的系统方程得到一组控制器,同时结合泰勒有限差分方法,对搅拌罐系统进行计算机离散控制仿真实验。此外,理论分析证明了张动力学应用到搅拌罐系统qkgag8879环亚手机|首页主页

的收敛稳定性。最后,利用MATLAB仿真工具,以排空搅拌罐为例,进行了计算机离散化控制仿真实验。为了比较,基于神经网络预测控制的计算机仿真实验被给出,对比仿真实验结果证明了利用泰勒有限差分方法对搅拌罐系统进行离散化控制仿真的有效性和高精度。此外,相较于利用ode45对搅拌罐系统进行计算机控制仿真,该方法具有减少系统函数取值和易于软硬件实现的优点。qkgag8879环亚手机|首页主页

关键词:张动力学;搅拌罐;泰勒有限差分;离散控制qkgag8879环亚手机|首页主页

中图分类号:TP391.9????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-1023-07qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803032qkgag8879环亚手机|首页主页

Discrete Control Simulation of Agitation Tank Based on Taylor Finite Differenceqkgag8879环亚手机|首页主页

Zhang Yunong, Ding Yaqiong, Li Le, Zhang Deyang, Qiu Binbinqkgag8879环亚手机|首页主页

(School of Data and Computer Science, Sun Yat-sen University, Guangzhou 510006, China)qkgag8879环亚手机|首页主页

Abstract: Zhang dynamics is used to solve the system equations of the agitation tank to get controllers. At the same time, Taylor finite difference method is used in the computer discrete control simulation for the agitator tank system. In addition, the convergence stability of Zhang dynamics applied to the agitation tank is proved through theoretical analysis. In order to achieve the draining purpose for the agitation tank, the computer discrete control simulation is conducted by means of MATLAB. For comparison, the computer simulation based on the neural network predictive controller is carried out. The comparative simulation results substantiate the effectiveness and high precision of the presented method. Moreover, compared with the ode45, Taylor finite difference method can decrease system functional evaluations and has easier software and hardware implementations.qkgag8879环亚手机|首页主页

Keywords: Zhang dynamics; agitation tank; Taylor finite difference; discrete controlqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

海面低飞目标复合散射计算及分析qkgag8879环亚手机|首页主页

武光辉1,童创明1,隋栋训2,孙玉龙3qkgag8879环亚手机|首页主页

(1. 空军工程大学防空反导学院,陕西 西安 7100512. 93246部队,吉林 延边 1336133. 95910部队,甘肃 酒泉 735000)qkgag8879环亚手机|首页主页

摘要:针对低飞目标与海面复合散射的快速计算问题,对传统的多径散射计算算法进行了改进,提出一种基于镜像反射面元斜率统计的多径散射计算算法改进算法相比传统的多径散射模型考虑了在重力波调制作用下的确定海面斜率分布特性。对确定海面上镜像反射面元斜率的分布特性进行统计,然后以此对各种斜率下的镜像反射面元的多径耦合散射进行加权,得到总的耦合散射贡献,进而求得目标与确定海面的复合电磁散射特性。仿真实验结果表明,该方法合理解释镜像反射面元斜率缓变对耦合散射的影响,能够有效地对广义布儒斯特效应进行仿真,为进一步对研究时变海面上运动目标的电磁散射特性打下基础。qkgag8879环亚手机|首页主页

关键词:复合散射;广义布儒斯特效应;超低空;斜率分布;多径qkgag8879环亚手机|首页主页

中图分类号:TN011TN955 ??????文献标识码:A?????? 文章编号:1004-731X (2018) 03-1030-06qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803033qkgag8879环亚手机|首页主页

Computation and Analysis for Coupling Scattering Characteristics of Low-fly Target Above Ocean Surfaceqkgag8879环亚手机|首页主页

Wu Guanghui1, Tong Chuangming1, Sui Dongxun2, Sun Yulong3qkgag8879环亚手机|首页主页

(1. School of Air and Missile Defense, Air Force Engineering University, Xi’an 710051, China; 2. Unit of 93246, Yanbian 133613, China; 3. Unit of 95910, Jiuquan 735000, China)qkgag8879环亚手机|首页主页

Abstract: Aiming at fast computation of the composite scattering of low-fly target and ocean surface, the improvement of conventional multi-path algorithm is implemented, and a new multi-path algorithm is proposed based on the statistics of mirror facets’ slope. New algorithm takes the modulation from gravity into account in comparison with conventional algorithm. The distribution of mirror facets’ slope is counted from a determined ocean surface, and the multi-path coupling is summed with a weight coefficient, which scatters from mirror facets with different slope. Furthermore, the coupling scattering characteristic is obtained from target and ocean surface. Simulation result indicates that the proposed algorithm could explain how the coupling scattering is affected by the slow change of mirror facets’ slope, and could simulate the G-Brewster effect effectively, which lies a solid foundation for electromagnetic scattering research of the moving target and time-varied ocean surface.qkgag8879环亚手机|首页主页

Keywords: composite scattering; G-Brewster; ultralow altitude; distribution for slops; multi-pathqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

高速公路临时路肩使用措施优化控制与仿真qkgag8879环亚手机|首页主页

李瑞敏1,2,叶朕1,2,李斌3qkgag8879环亚手机|首页主页

(1. 清华大学土木工程系,北京 1000842. 国家道路交通管理工程技术研究中心,北京 1000843. 交通运输部公路科学研究院智能交通技术交通行业重点实验室,北京 100088)qkgag8879环亚手机|首页主页

摘要:总结临时路肩使用措施所存在的问题,提出了基于网络总行程时间最小化的高速公路临时路肩使用措施优化模型。以高速公路METAENT宏观动态交通流模型为基础,利用遗传算法及滑动时间窗来预测优化路肩在不同约束条件和目标函数下的开启和关闭问题。选择美国加利福尼亚州I-80E高速公路进行实例分析。结果表明,一次时间窗(10 min)内所有路段路肩控制变量变化不大于14次且可关闭路肩的权重系数为0.5时,网络总行程时间减少30.61%。总行程时间值比全仿真时间内开放路肩或超过一定流量阈值开放路肩的总行程时间更小,控制效果更为理想。qkgag8879环亚手机|首页主页

关键词:主动交通管理;临时路肩使用;METANET交通流模型;最优控制qkgag8879环亚手机|首页主页

中图分类号:U491?????? 文献标识码:A??????? 文章编号:1004-731X (2018) 03-1036-10qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803034qkgag8879环亚手机|首页主页

Optimal Control and Simulation of Hard Shoulder Running on Highwaysqkgag8879环亚手机|首页主页

Li Ruimin1,2, Ye Zhen1,2, Li Bin3qkgag8879环亚手机|首页主页

(1. Department of Civil Engineering, Tsinghua University, Beijing 100084, China; 2. Chinese National Traffic Management Engineering Research Center, Beijing 100084, China; 3. Key Laboratory of Technology on Intelligent Transportation Systems Research Institute of Highway, Beijing 100088, China)qkgag8879环亚手机|首页主页

Abstract: This paper summarizes the problems in the operation of hard shoulder running (HSR). A new algorithm for optimizing HSR on highways is proposed, which aims to minimize the total time spent (TTS) in the whole network. Based on the METANET model of highways, the algorithm utilizes genetic algorithm and sliding windows technique to forecast and optimize the operation of HSR under different constraint conditions and target functions. The strategy is tested on the I-80E highway in California. The experimental results show that when the change frequency of HSR is less than or equal to 14 during a sliding window and the weight coefficient of the closure is 0.5, the TTS is reduced by 30.61%, which is better than TTS of all-time operation or during the volumes exceed a predetermined threshold.qkgag8879环亚手机|首页主页

Keywords: active traffic management; hard shoulder running; METANET; optimal controlqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

基于运动干扰站的SAR-GMTI虚假场景干扰快速算法qkgag8879环亚手机|首页主页

房明星,毕大平,沈爱国qkgag8879环亚手机|首页主页

(电子工程学院,安徽 合肥 230037)qkgag8879环亚手机|首页主页

摘要:传统的SAR虚假场景干扰不具备运动目标的运动特性,难以对SAR-GMTI系统实施有效干扰,因此提出一种基于运动干扰站的SAR-GMTI虚假场景干扰快速算法。通过对传统算法的合理简化提出矩阵运算形式的SAR虚假场景干扰快速算法,结合运动干扰站产生具有运动特性的虚假场景,解决了传统虚假场景干扰实时性差的问题,对SARSAR-GMTI均能够形成逼真的虚假场景干扰效果,可同时保护地面运动目标和静止目标。以三通道干涉对消技术为例分析了其对多通道SAR-GMTI的干扰性能,理论分析和仿真实验证明了干扰方法的可行性和有效性。qkgag8879环亚手机|首页主页

关键词:合成孔径雷达-地面动目标显示;欺骗干扰;虚假场景;运动干扰站;三通道干涉对消qkgag8879环亚手机|首页主页

中图分类号:TN974??????? 文献标识码:A???????? 文章编号:1004-731X (2018) 03-1046-11qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803035qkgag8879环亚手机|首页主页

Fast False Scene Jamming Algorithm for SAR-GMTI Based on Moving Jamming Stationqkgag8879环亚手机|首页主页

Fang Mingxing, Bi Daping, Shen Aiguoqkgag8879环亚手机|首页主页

(Electronic Engineering Institute, Hefei 230037, China)qkgag8879环亚手机|首页主页

Abstract: Traditional false scene jamming of SAR is invalid for SAR-GMTI system, which does not have the feature of moving targets, so a fast false scene jamming algorithm for SAR-GMTI based on moving jamming station is proposed. Through reasonable simplification of the traditional algorithm, the fast false scene jamming algorithm of matrix form is put forward. The method is proposed to take advantage of both fast false scene jamming algorithm and moving jamming station, so it can produce false scene jamming with real moving feature. It not only solves the real-time problem of traditional false scene jmming, but also produces vivid false scene jamming performance for SAR and SAR-GMTI, so it can protect ground moving targets and stationary targets at the same time. The countering performance against SAR-GMTI is analyzed by using the tri-channel interference cancelling technique. Theoretical analysis and computer simulation justify the validity and efficiency of the proposed method.qkgag8879环亚手机|首页主页

Keywords: synthetic aperture radar-ground moving target indication (SAR-GMTI); deceptive jamming; false scene; moving jamming station; tri-channel interference cancellingqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

导弹外头罩分离及落区预测仿真qkgag8879环亚手机|首页主页

田浩1,穆洲2,李慧通3,赵阳1qkgag8879环亚手机|首页主页

(1. 哈尔滨工业大学航天学院,哈尔滨 1500012. 北京宇航系统工程研究所,北京 1000763. 北京机械设备研究所,北京 100854)qkgag8879环亚手机|首页主页

摘要:某些型号导弹发射过程中使用外头罩对内部设备进行保护,为了防止分离后外头罩砸伤工作人员或者相关设备,需要预测外头罩的落地位置范围,并采取相应的防护措施。针对某型导弹外头罩分离系统,在研究固体燃气发生器和正推火箭的外头罩分离方案基础上,建立了外头罩分离过程和坠落过程的动力学模型。采用蒙特卡洛打靶技术,经仿真计算,得到外头罩坠落过程的运动曲线和落点位置的分布范围。本文仿真结果能够为发射装置及人员防护设计提供技术支持。qkgag8879环亚手机|首页主页

关键词:导弹;导弹外头罩分离系统;动力学模型;蒙特卡洛打靶法qkgag8879环亚手机|首页主页

中图分类号:V475.1 ???????文献标识码:A??????? 文章编号:1004-731X (2018) 03-1056-07qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803036qkgag8879环亚手机|首页主页

Simulation of Missile Head Cover Separation and Landing Locationsqkgag8879环亚手机|首页主页

Tian Hao1, Mu Zhou2, Li Huitong3, Zhao Yang1qkgag8879环亚手机|首页主页

(1. School of Astronautics, Harbin Institute of Technology, Harbin 150001, China;qkgag8879环亚手机|首页主页
2. Beijing Institute of Aerospace Systems Engineering, Beijing 100076, Chinaqkgag8879环亚手机|首页主页
3. Beijing Institute of Mechanical Equipment, Beijing 100854, China)
qkgag8879环亚手机|首页主页

Abstract: Some missiles use head cover to protect the internal equipment during the launching process. In order to prevent the head cover from damaging the people or equipment after separation, researchers need to predict the landing position range and take protective measures. This paper designs a separation scheme for a missile head cover separation based on solid propellant gas generator and solid rocket. In this study, we establish a dynamic simulation model of head cover separation and falling procedure. The simulation calculation of the head cover location range considering multiple factors using Monte-Carlo method is developed. And the motional curve of separation bodies and the danger zone of head cover landing location are obtained. The simulation results in this paper will provide technical support for rocket launcher and personnel protection design.qkgag8879环亚手机|首页主页

Keywords: missile; head cover separation system; dynamic model; Monte-Carlo methodqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

动态帧时隙的二进制树RFID防碰撞算法研究qkgag8879环亚手机|首页主页

张小红,周伟辉qkgag8879环亚手机|首页主页

(江西理工大学信息工程学院,江西 赣州 341000)qkgag8879环亚手机|首页主页

摘要:为解决无线射频识别(Radio Frequency IdentificationRFID)系统多标签碰撞问题,在分析动态帧时隙ALOHA算法和二进制搜索树算法基础上,提出一种基于动态帧时隙的二进制树RFID防碰撞算法(Dynamic Framed Binary TreeDFBT)。采用Vogt算法预先估计待识别标签总数,利用动态帧时隙ALOHA算法对标签进行识别,阅读器将未识别的标签提取出来进行最高碰撞位的判断,根据最高碰撞位的情况结合二进制搜索树算法进行碰撞标签分裂。仿真结果表明:DFBT算法提高了识别效率和稳定性,减少了总时隙数,降低了标签成本。当标签数目达到1 000左右,算法识别效率可以达到64%左右,比动态帧时隙ALOHA算法和后退式二进制搜索树算法分别提高了210%30%qkgag8879环亚手机|首页主页

关键词:无线射频识别;动态帧时隙ALOHA算法;二进制搜索树算法;防碰撞算法;识别效率qkgag8879环亚手机|首页主页

中图分类号:TN911.23 ??????文献标识码:A?????? 文章编号:1004-731X (2018) 03-1063-11qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803037qkgag8879环亚手机|首页主页

Research on Dynamic Framed Binary Tree Anti-collision Algorithm for RFID Systemqkgag8879环亚手机|首页主页

Zhang Xiaohong, Zhou Weihuiqkgag8879环亚手机|首页主页

(School of Information Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China)qkgag8879环亚手机|首页主页

Abstract: Based on dynamic frame-slotted ALOHA algorithm and binary search tree algorithm, a dynamic framed binary tree (DFBT) anti-collision algorithm is presented to solve the problem of multi-tag collision in radio frequency identification (RFID). Vogt algorithm is adopted to estimate tags number, then the dynamic frame-slotted ALOHA (DFSA) algorithm is used to identify tags, and the unidentified tags are extracted and the highest collision bit is judged by readers. The highest collision tags are grouped by the collision bit within the binary search tree (BST) algorithm. Simulation results show that the DFBT algorithm can improve the identification efficiency and stability which reduces the total time slots and the cost. When the tags number is about 1000, identification efficiency of the DFBT algorithm is about 64%. Compared with the DFSA algorithm and the regressive-style binary search tree (RBST) algorithm, the proposed algorithm enhances the identification efficiency by 210% and 30% respectively.qkgag8879环亚手机|首页主页

Keywords: radio frequency identification; dynamic frame-slotted ALOHA algorithm; binary search tree algorithm; anti-collision algorithm; identification efficiencyqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

SRM全转速控制平滑切换方法qkgag8879环亚手机|首页主页

孙佃升1,2qkgag8879环亚手机|首页主页

(1. 滨州学院 航空特种电机及其控制研究中心,山东 滨州 2566002. 滨州学院 电气工程学院,山东 滨州 256600)qkgag8879环亚手机|首页主页

摘要:为实现开关磁阻电机(SRM)低速与高速下不同控制方式的平滑切换提出一种采用函数拟合法的相电流开通角、关断角以及电流斩波给定值协调控制的全转速范围控制方法。为抑制开关磁阻电机运行中的各种扰动,提高动态运行性能,将自抗扰控制应用于转速调节,构建了基于自抗扰控制的开关磁阻电机全转速段控制方式平滑切换调速系统。仿真结果表明所提方法能够协调控制开通角、关断角和电流斩波给定值,实现高、低速下控制方式的平滑切换,系统动态性能良好,达到了良好的控制效果。qkgag8879环亚手机|首页主页

关键词:开关磁阻电机;自抗扰;全转速范围;函数拟合法;平滑切换qkgag8879环亚手机|首页主页

中图分类号:TP272??????? 文献标识码:A??????? 文章编号:1004-731X (2018) 03-1074-08qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803038qkgag8879环亚手机|首页主页

Smooth Transition Method Over Entire Speed Range of Switched Reluctance Motorqkgag8879环亚手机|首页主页

Sun Diansheng1,2qkgag8879环亚手机|首页主页

(1. Aviation Special Motor and Control Research Center, Binzhou University, Binzhou 256600, china;2. College of Electrical Engineering, Binzhou University, Binzhou 256600, china)qkgag8879环亚手机|首页主页

Abstract: In order to smoothly switch different control modes of switched reluctance motor under the condition of low speed and high speed, a novel scheme using function fitting method to control turn-on angle, turn-off angle and phase current chopping is proposed. The active disturbance rejection speed control system is structured for switched reluctance motor in order to restrain all kinds of disturbance and improve the dynamic performance. Simulation results indicate that the principle of the method is correct and the turn-on angle, turn-off angle and phase current chopping is coordinated to realize the smooth switching of different control modes with low speed and high speed. The dynamic performance of the system operates well.qkgag8879环亚手机|首页主页

Keywords: switched reluctance motor; active disturbance rejection control; entire speed range; function fitting method; smooth transitionqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

低压配电网三相四桥臂D-STATCOM的无源控制qkgag8879环亚手机|首页主页

郑宏,徐文成,张佳伟qkgag8879环亚手机|首页主页

(江苏省电动车辆驱动与智能控制重点实验室,江苏大学电气信息工程学院 镇江 212013)qkgag8879环亚手机|首页主页

摘要:三相四桥臂配电网静止同步补偿器(D-STATCOM)在解决三相四线制的低压供电系统中由三相不平衡负载所带来的问题上有明显的优越性。在同步旋转d-q-0坐标系下建立了系统的欧拉-拉格朗日(EL)周期平均模型,针对其非线性强耦合的特点,采用了无源控制(PBC)叠加反相交叉耦合项的控制策略实现dq轴分量非线性解耦控制,根据系统的无源性采用了能量成形和阻尼注入(ESDI)的方法设计了PBC控制器,并从Lyapunov稳定性理论上论证了闭环系统的渐进稳定,通过仿真实验验证采用的控制策略实现了三相不平衡等问题的有效处理。qkgag8879环亚手机|首页主页

关键词:四桥臂D-STATCOMEL周期平均模型;无源控制;能量成形和阻尼注入qkgag8879环亚手机|首页主页

中图分类号:TP391.9????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-1082-08qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803039qkgag8879环亚手机|首页主页

Passivity-based Control for Three-phase Four-bridge D-STATCOM in Low-voltage Distribution Networkqkgag8879环亚手机|首页主页

Zheng Hong, Xu Wencheng, Zhang Jiaweiqkgag8879环亚手机|首页主页

(Jiangsu Key Laboratory of Drive and Intelligent Control for Electric Vehicle, School of electrical and information engineering, Jiangsu University, Zhenjiang 212013, China)qkgag8879环亚手机|首页主页

Abstract: Three-phase four-bridge distribution static synchronous compensator (D-STATCOM) has the obvious superiority in solving the problems that brought by the three-phase unbalanced loads in the three-phase four-wire low-voltage power supply system. The Euler-Lagrange (EL) cycle average model is established based on the synchronous rotation d-q-0 coordinates. In the light of the nonlinear and strong coupling characteristics, the passivity-based control (PBC) and inverse cross coupling control strategy using the d-q axis nonlinear decoupling control. PBC controller is designed by energy shaping and damping injection (ESDI) based on the passivity of the system. The closed-loop system is demonstrating asymptotically stable according to the Lyapunov stability theory. Simulation results verify to the control strategy? deal with three-phase unbalance and other problems effectively.qkgag8879环亚手机|首页主页

Keywords: four-bridge D-STATCOM; EL average cycle model; energy shaping and damping injection; passivity-based controlqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

轨道炮电枢电动力转捩形成机理与仿真分析qkgag8879环亚手机|首页主页

王志恒1,2,万敏1,李小将1qkgag8879环亚手机|首页主页

1.航天工程大学研究生院,北京 1014162.中国人民解放军91550部队,大连 116023qkgag8879环亚手机|首页主页

摘要:轨道炮电枢转捩引起轨道烧蚀和发射参数变化,是制约轨道炮性能提升的关键问题之一。分析了电流下降段轨道炮电枢电动力转捩形成机理,给出了电枢转捩判断模型和电磁场参数计算模型,采用有限元软件ANSYS Workbench对电枢转捩形成过程进行了仿真分析,仿真了该过程中的电流、电磁力分布以及电磁力引起的电枢形变情况,分析了电流下降率对电枢转捩的影响。仿真分析结果表明:电流下降段电枢内部会感应出涡流,涡流可能引起电枢尾部区域电磁力改变方向,甚至电枢尾部形变,进而导致电枢转捩发生;电流下降率越大则电枢受到的反向电磁力越大,电枢转捩越容易发生。qkgag8879环亚手机|首页主页

关键词:电磁轨道炮;电枢转捩;电流下降;电弧接触;滑动电接触qkgag8879环亚手机|首页主页

中图分类号:TM89????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-1090-06qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803040qkgag8879环亚手机|首页主页

Formation Mechanism and Simulation Analysis of Railgun Armature Electromagnetic Transitionqkgag8879环亚手机|首页主页

Wang Zhiheng1,2, Wan Mei1, Li Xiaojiang1qkgag8879环亚手机|首页主页

(1.University of Space Engineering Graduate School, Beijing 101416, China; 2. Unit 91550 of PLA, Dalian 116023, China)qkgag8879环亚手机|首页主页

Abstract: Armature transition of railgun causes rails erosion and change of launching parameters, which is one of the key problems restricting the performance of railgun. The formation mechanism of armature transition at the down-slope of driving current is analyzed. The armature transition estimation model and electromagnetic parameters calculation model are given. The formation process of armature transition at the down-slope of driving current is simulated by AYNSYS Workbench. The current and magnetic field distribution are simulated, so as the armature deformation caused by the armature electromagnetic force. The effect of current dropping rate on armature transition is analyzed. The simulation and analysis result show that, the eddy current at current down-slope may lead to change the direction of electromagnetic force in armature tail, even the deformation of armature tail, which leads to the armature transition. The reverse electromagnetic force in armature tail increases with the increasing of the driving current dropping rate. As a result, the armature transition occurs more easily.qkgag8879环亚手机|首页主页

Keywords: railgun; armature transition; current down-slope; arc contact; sliding electric contactqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

直流调速系统的改进型分数阶滑模控制qkgag8879环亚手机|首页主页

赵志诚1,赵志涛1,张井岗1,赵显姣2qkgag8879环亚手机|首页主页

(1. 太原科技大学电子信息工程学院,山西 太原 0300242. 国网山东莱西市供电公司,山东 青岛 266600)qkgag8879环亚手机|首页主页

摘要:针对直流调速系统中滑模控制容易引起稳态误差的问题,设计了一种改进型分数阶滑模控制(Fractional order sliding mode controlFOSMC)。通过对直流调速系统的一阶数学模型求导,建立了系统的二阶数学模型,将分数阶微积分理论引入到滑模切换函数中,结合指数趋近律和系统二阶数学模型,设计了分数阶滑模控制器,并在控制器的输出端串联积分环节,得到系统的控制信号,最后利用李雅普诺夫稳定性理论和分数阶微积分理论进行了稳定性分析。仿真和实验表明,本文方法不仅能够有效消除系统受干扰时产生的稳态误差,而且可以削弱系统抖振现象。qkgag8879环亚手机|首页主页

关键词:直流调速系统;滑模控制;分数阶微积分;指数趋近律;稳态误差;抖振qkgag8879环亚手机|首页主页

中图分类号:TP273 ??????文献标识码:A?????? 文章编号:1004-731X (2018) 03-1096-41qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803041qkgag8879环亚手机|首页主页

Modified Fractional Order Sliding Model Control for DC Speed Regulating Systemqkgag8879环亚手机|首页主页

Zhao Zhicheng1, Zhao Zhitao1, Zhang Jinggang1, Zhao Xianjiao2qkgag8879环亚手机|首页主页

(1. School of Electronic Information Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China; 2. State Grid Laixi Power Supply Company, Qingdao 266600, China)qkgag8879环亚手机|首页主页

Abstract: An improved fractional order sliding model control (FOSMC) is proposed for DC speed regulating system to eliminate static error easily caused by disturbance in sliding model control. Second order mathematical model is established through taking the derivative of first-order mathematical model of DC speed regulating system. The theory of fractional calculus is introduced to the switching function of sliding mode, and fractional sliding model is designed combining exponential reaching law and second order mathematical model. The control signal of voltage can be obtained through taking output of the controller and integrator in series. Stability analysis of the system is based on Lyapunov theorem and fractional calculus. The simulation and experimental results show that the proposed method not only eliminates static error when inference happens, but also reduces the chattering effectively.qkgag8879环亚手机|首页主页

Keywords: DC speed regulating system; sliding model control; fractional order calculus; exponential reaching law; static error; chatteringqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

基于磁感应技术的地下传感网信道建模仿真qkgag8879环亚手机|首页主页

刘洲洲1,2,申良2qkgag8879环亚手机|首页主页

1. 西北工业大学计算机学院,西安 陕西 7100722.西安航空学院电子工程学院, 西安 陕西 710077qkgag8879环亚手机|首页主页

摘要:针对无线地下传感网(Wireless Underground Sensor NetworkWUSN)电磁波通信中的信道高路径损耗、信道条件动态变化大和天线尺寸过大等问题,研究了磁感应线圈(Magnetic InductionMI)WUSN传输过程的信道特性影响,分析了谐变次偶源在土壤地层中的传输原理,通过传输等效电路图分析了土壤中线圈的极化方向与涡流损耗系数对信道模型的影响,考虑频率与距离的变化对信道特性的影响。通过选择有利于地下传输的器件,进行地下收发实验,对比实验所测得的结果与理论信道模型,分析并确定低频磁感应技术的系统理论模型与线圈在地下收发实验的结果是一致的。qkgag8879环亚手机|首页主页

关键词:无线地下传感网;磁感应技术;信道模型;建模qkgag8879环亚手机|首页主页

中图分类号:TP393?????? 文献标识码:A??????? 文章编号:1004-731X (2018) 03-1102-07qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803042qkgag8879环亚手机|首页主页

Channel Modeling and Simulation of Wireless Underground Sensor Networks Based on Magnetic Induction Technologyqkgag8879环亚手机|首页主页

Liu Zhouzhou1,2, Shen Liang 2qkgag8879环亚手机|首页主页

(1.School of Computer Science, Northwestern Polytechnical University, Xi’an 710072, China; 2.School of Electronic Engineering, Xi’an Aeronautical University, Xi’an 710077, China )qkgag8879环亚手机|首页主页

Abstract: Aiming at the problem of high path loss, huge dynamic changes of channel conditions and large antenna size of the electromagnetic wave communication channel in wireless underground sensor networks ( WUSN), the channel characteristics of magnetic induction (MI) in the process of WUSN transmission are studied and the transmission principle of harmonic source in soil strata is analyzed. The influence of the polarization direction of the coil and the eddy current loss coefficient on the channel model is analyzed by the transmission equivalent circuit diagram, and the influence of the change of the frequency and the distance on the channel characteristics is considered. Finally the devices that are in favor of the underground transmission are selected and underground receiving and dispatching experiment is carried out. By comparing the measured results with the theoretical channel model, the theoretical model of the low frequency magnetic induction technique is consistent with the experimental results.qkgag8879环亚手机|首页主页

Keywords: wireless underground sensor networks; magnetic induction technology; channel model; modelingqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

一种风电机组非奇异快速终端滑模MPPT控制方法qkgag8879环亚手机|首页主页

李大中,邬峰qkgag8879环亚手机|首页主页

(华北电力大学 自动化系,河北 保定 071003qkgag8879环亚手机|首页主页

摘要:为提高双馈风力发电机组的风能捕获效率,设计了一种基于直接速度控制(DSC)MPPT控制方法。针对传统直接速度控制策略中有效风速难以获得的问题,该方法采用高阶容积卡尔曼滤波(HCKF)和牛顿拉夫逊方法(NR)设计了有效风速估计器;针对转速环响应速度慢的问题设计了以非奇异快速终端滑模面为基础的转速控制器。以2.4 MW风电机组作为研究对象,在快速变化风况激励下,对风电机组的动态响应进行了仿真研究,结果表明改进的控制方法可以准确估计有效风速,与传统控制策略相比可以更好的实现最大功率跟踪。qkgag8879环亚手机|首页主页

关键词:风电机组;MPPT;高阶容积卡尔曼滤波;非奇异快速终端滑模qkgag8879环亚手机|首页主页

中图分类号:TM315??????? 文献标识码:A??????? 文章编号:1004-731X (2018) 03-1109-09qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803043qkgag8879环亚手机|首页主页

A MPPT Control Method of Wind Turbines with Nonsingular and Fast Terminal Sliding Modeqkgag8879环亚手机|首页主页

Li Dazhong, Wu Fengqkgag8879环亚手机|首页主页

(Department of Automation, North China Electric Power University, Baoding 071003, China)qkgag8879环亚手机|首页主页

Abstract: In order to improve the energy capture efficiency of doubly-fed induction generator (DFIG), a control method is designed based on direct speed control (DSC) to achieve maximum power point tracking (MPPT). An effective wind speed estimator based on high-degree cubature Kalman filter (HCKF) and Newton-Raphson method (NR) is proposed for solving the difficulty in obtaining effective wind speed using traditional control strategy. A speed controller based on nonsingular fast terminal sliding mode surface is designed to obtain a faster speed response for the speed loop. The numerical simulation research of the 2.4MW wind turbine under rapidly variable wind conditions is carried out. The simulation results show that the improved control method can estimate the effective wind speed accurately and achieve better MPPT compared with the traditional control strategy.qkgag8879环亚手机|首页主页

Keywords: wind turbine; MPPT; high-degree cubature Kalman filter; nonsingular fast terminal sliding mode controlqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

飞机地面除冰效能与除冰参数相关性分析qkgag8879环亚手机|首页主页

陈斌1,2,王立文1,2qkgag8879环亚手机|首页主页

(1. 天津大学机械工程学院,天津 3000722. 中国民航大学航空地面特种设备民航研究基地,天津 300300)qkgag8879环亚手机|首页主页

摘要:飞机地面积冰导致飞行安全隐患和航班延误,除冰液除冰是缓解上述问题的主要方法,但缺乏除冰液使用参数和除冰效能的参考依据。以研究除冰液参数对除冰效能的影响为目的,分析了除冰液除冰机理,抽象出该过程的黑箱数学模型建立了除冰过程的分段模型,通过数值模拟方法研究了除冰液温度和流量除冰效能相关性。实验表明:除冰效能和除冰液温度正相关,但流量增加不能迅速提高除冰速度,反而造成除冰液浪费。验证了仿真结论的合理性,为除冰装备技术指标和性能优化奠定基础。qkgag8879环亚手机|首页主页

关键词:飞机;除冰液;除冰;效能;相关性分析qkgag8879环亚手机|首页主页

中图分类号:V351.392 ??????文献标识码:A?????? 文章编号:1004-731X (2018) 03-1118-09qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803044qkgag8879环亚手机|首页主页

Relevance Analysis of Deicing Parameters and Deicing Efficiency of Aircraft Groundqkgag8879环亚手机|首页主页

Chen Bin1,2, Wang Liwen1,2qkgag8879环亚手机|首页主页

(1. Department of Mechanical Engineering, Tianjin University, Tianjin 300072, China; 2. Ground Support Equipments Research Base of Civil Aviation University of China, Tianjin 300300, China)qkgag8879环亚手机|首页主页

Abstract: Aircraft ground freezing could lead to potential danger and delay for flight. To alleviate these problems, the main method is to use the deicing fluids to clean ice or snow on the aircraft body, which lacks of reference of the deicing fluids parameters and efficiency. To study the effect of the deicing fluids parameters on the aircraft deicing efficiency, the deicing mechanism is analyzed.The black box mathematical model of the deicing process is generalized abstractly. The deicing process is divided into two subprocesses to establish the deicing model.The relevance between the deicing fluids parameters and deicing efficiency is studied through numerical simulation method. Experiments show that the deicing efficiency is positively related to the deicing fluids temperature. But the deicing velocity could not be enhanced with a big fluids flux in a moment, yet more deicing fluids are wasted massively. Experimental results verify that the deicing mechanism is reasonable, which provides a basis for deicing equipment qualification and performance optimization.qkgag8879环亚手机|首页主页

Keywords: aircraft; deicing fluids; aircraft ground deicing; efficiency; relevance analysisqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

相对变换主元分析特征提取的变压器故障诊断qkgag8879环亚手机|首页主页

唐勇波1,2,熊印国1qkgag8879环亚手机|首页主页

(1. 宜春学院物理科学与工程技术学院,宜春 3360002. 江西工程学院电子信息工程学院,新余 338000)qkgag8879环亚手机|首页主页

摘要:针对主元分析提取变压器油中溶解气体故障特征不明显问题,提出基于相对变换(RT)主元分析(PCA)的变压器故障诊断方法采用相对变换将原始数据空间变换到相对空间,提高数据之间的可区分性;利用主元分析来降低相对空间维数,使提取的主元特征更具有代表性;根据故障特征,建立基于最小二乘支持向量机(LSSVM)的变压器故障诊断模型并采用混沌粒子群算法对核参数进行优化结果表明,相对变换主元分析能够有效提取油中溶解气体故障特征,提高数据集的可分性,相比于PCA-LSSVMRT-LSSVM和灰关联熵方法,所提出的方法具有较优的故障诊断能力。qkgag8879环亚手机|首页主页

关键词:变压器;故障诊断;相对变换;主元分析;最小二乘支持向量机;粒子群算法qkgag8879环亚手机|首页主页

中图分类号:TP206.3TP181????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-1127-08qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803045qkgag8879环亚手机|首页主页

Transformer Fault Diagnosis Based on Feature Extraction of Relative Transformation Principal Component Analysisqkgag8879环亚手机|首页主页

Tang Yongbo1,2, Xiong Yinguo1qkgag8879环亚手机|首页主页

(1. School of Physical Science and Engineering, Yichun University, Yichun 336000, China; 2. School of Electronic Information Engineering, Jiangxi University of Engineering, Xinyu 338000, China)qkgag8879环亚手机|首页主页

Abstract: In order to handle the problem that the feature extraction of dissolved gas analysis (DGA) data by principal component analysis (PCA) is not distinct, a new transformer fault diagnosis method based on relative transformation (RT) PCA is proposed. The original data space is converted to the relative data space by relative transformation which makes the transformed data more distinguishable. PCA is employed to reduce the dimension of relative space to make the features more representative in the relative space. Diagnosis model based on least squares support vector machine (LSSVM) is set up according to the fault characteristic of transformer. The chaos particle swarm optimization (CPSO) algorithm is adopted to optimize the kernel parameters of LSSVM. Compared with PCA-LSSVM, RT-LSSVM and grey relation entropy, experimental results show that RTPCA increases the separability of data set and verify the fault diagnosis ability of the proposed method.qkgag8879环亚手机|首页主页

Keywords: transformer; fault diagnosis; relative transformation; principal component analysis; least squares support vector machine; particle swarm optimization algorithmqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

基于机器学习的热源总供热量优化控制qkgag8879环亚手机|首页主页

李琦,户杏启,赵建敏qkgag8879环亚手机|首页主页

(内蒙古科技大学信息工程学院,内蒙古 包头 014010)qkgag8879环亚手机|首页主页

摘要:集中供热系统结构复杂,存在严重的滞后性、强耦合性、非线性,针对其难以通过机理建模进行辨识和控制的问题,提出一种基于机器学习的热源总热量生产优化控制方法。分别利用BP(Back Propagation)和长短时记忆神经网络建立集中供热系统的热源模型,在满足供热质量的前提下,以供热总能耗为优化目标,通过执行依赖双启发式动态规划(Action-Dependent Dual Heuristic ProgrammingADDHP)算法,得到热源处供水温度和供水流量的优化控制序列。仿真分析表明,建立的热源模型能有效辨识热源生产过程,ADDHP控制方法能够实现热源总热量生产的最优控制。qkgag8879环亚手机|首页主页

关键词:机器学习;长短时记忆神经网络;执行依赖双启发式动态规划;热源;优化控制qkgag8879环亚手机|首页主页

中图分类号:TP301???????? 文献标识码:A??????? 文章编号:1004-731X (2018) 03-1134-10qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803046qkgag8879环亚手机|首页主页

Optimizing Control of Total Heat Supply Based on Machine Learningqkgag8879环亚手机|首页主页

Li Qi, Hu Xingqi, Zhao Jianminqkgag8879环亚手机|首页主页

(School of Information Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China)qkgag8879环亚手机|首页主页

Abstract: The central heating system has complex structure, along with the characteristics of?hysteresis, strong coupling and nonlinear. Contraposing the problem that the process is difficult to be identified and controlled by the mechanism modeling, an optimal control method of heat source total heat production based on machine learning is proposed. The heat source model of central heating system is established by BP neural network and long short-term memory neural network. Under the premise of meeting the demand of heating quality, with the total energy consumption as the optimization objective, the optimal control sequence of water supply temperature and water flow at heat source is obtained by the action-dependent dual heuristic programming (ADDHP) algorithm. The simulation analysis shows that, the established heat source model can effectively identify the heat source production process, and the ADDHP control method can achieve the optimal control of total heat production of heat source.qkgag8879环亚手机|首页主页

Keywords: machine learning; long short-term memory neural network; action-dependent dual heuristic programming; heat source; optimal controlqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

一种异构网络中上下行流公平性优化算法qkgag8879环亚手机|首页主页

李沛谕1,李哲青1,王辉1,夏签2qkgag8879环亚手机|首页主页

(1.河南科技大学网络信息中心,河南 洛阳 4710232.河南科技大学信息工程学院,河南 洛阳 471023)qkgag8879环亚手机|首页主页

摘要:针对AP(Access Point)性能优化过程中存在的上下行公平性差的问题,提出了一种保证上下行带宽公平性的优化算法,称为FOUD(Fairness Over Up-flow and Down-flow)智能AP优化算法。该算法部署在APMAC层上,利用差错信道下的二维马尔科夫链对AP和无线站点(STA)分别进行建模分析,在考虑最大重传次数与无线误码率对数据帧发送的影响下,推导出不同误码率和不同上下行流数目条件下智能AP的发送概率,通过调节智能AP的最小竞争窗口和发送概率来保证上下行带宽公平性。实验证明:FOUD智能AP优化算法能够有效提高上下行带宽的公平性以及带宽的合理分配。qkgag8879环亚手机|首页主页

关键词:异构网络;上下行流公平性;智能AP;动态概率性发包机制qkgag8879环亚手机|首页主页

中图分类号:TP393???????? 文献标识码:A???????? 文章编号:1004-731X (2018) 03-1144-10qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803047qkgag8879环亚手机|首页主页

A Novel Algorithm for Improving Fairness Between Uplink and Downlink Flows in Heterogeneous Networkqkgag8879环亚手机|首页主页

Li Peiyu1, Li Zheqing1, Wang Hui1, Xia Qian2qkgag8879环亚手机|首页主页

(1. Network Information Center of Henan University of Science and Technology, Luoyang 471023, China; 2.College of Information Engineering of Henan University of Science and Technology, Luoyang 471023, China)qkgag8879环亚手机|首页主页

Abstract:In order to improve the fairness between uplink and downlink flows in AP optimization, a novel algorithm called FOUD(fairness over uplink and downlink) is proposed.Considering the influence of the attempt limit and the bit error rate of wireless, the FOUD algorithm modeling of AP and wireless stations is studied separately by using two-dimensional Markov chain, which derives the probability of data sending under the condition of different bit error rate and different number of uplink and downlink flows. Simulation results show that FOUD can improve the fairness of the uplink and downlink bandwidth as well as the throughput.qkgag8879环亚手机|首页主页

Keywords: heterogeneous network, fairness between uplink and downlink flows,intelligent AP,dynamic probabilistic sending mechanismqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

基于系统仿真的常见构型半潜式钻井平台频域分析qkgag8879环亚手机|首页主页

陈博,喻志勇,吕勇,李骁健qkgag8879环亚手机|首页主页

(兰州理工大学机电工程学院,兰州 730050)qkgag8879环亚手机|首页主页

摘要:通过分析4种常见构型半潜钻井平台的水动力性能,为平台的选型提供全面系统的指导。1:1的三维湿表面模型使用Ansys建立,数值模拟采用水动力分析软件Aqwa (Advanced quantitative wave Analysis)。结果表明,纵浪对平台的纵、垂荡、纵摇影响较大,横浪对平台的横、垂荡、横摇影响较大;立柱数增加,纵荡、横荡、垂荡方向上的阻尼系数及附加质量和有所增加。得出了不能只考虑增加立柱数来提高平台的强度、刚度,型2平台在拖航、作业工况下都有较好的水动力性能,在设计时可以借鉴。qkgag8879环亚手机|首页主页

关键词:AQWA;半潜式钻井平台;频域分析;水动力性能;阻尼系数;附加质量qkgag8879环亚手机|首页主页

中图分类号:TE5????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-1154-08qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803048qkgag8879环亚手机|首页主页

Frequency Domain Analysis of Common Configuration Semi-submersible Drilling Platform Based on System Simulationqkgag8879环亚手机|首页主页

Chen Bo, Yu Zhiyong, Lü Yong, Li Xiaojianqkgag8879环亚手机|首页主页

(School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730050, China)qkgag8879环亚手机|首页主页

Abstract: To analysis of 4 semi-submersible drilling platform hydrodynamic performance providing a comprehensive guidance for system selection. The 1:1 3D wet surface model is established by ANSYS and numerical simulation is carried out based on the dynamic analysis software AQWA. Simulation results show that longitudinal waves impact the surge, heaving and pitching motion a lot, beam seas have large effects on the sway, heave, roll motion vertical heave response increases significantly, as will as surge, sway, heave damping coefficient of vector direction and the added mass coefficient of algebraic. We can not only increase the number of columns to improve platform strength and stiffness. The type 2 platform has better hydrodynamic performance, which is a reference for designing.qkgag8879环亚手机|首页主页

Keywords: AQWA; emi-submersible drilling platform; frequency domain analysis; hydrodynamic properties; damping coefficient; additional qualityqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

中小学门口道路上学混合交通流的综合仿真qkgag8879环亚手机|首页主页

庞明宝,裴亚男,张宁qkgag8879环亚手机|首页主页

(河北工业大学土木与交通学院,天津 300401)qkgag8879环亚手机|首页主页

摘要:综合社会力模型SFM (Social Force Model)和元胞自动机模型CAM(Cellular Automaton Model)的优缺点,建立一个行人、机动车、非机动车交织的中小学门口道路区域的混合交通流仿真模型,对上学期间的交通流过程进行仿真,对乘私家车上学比例变化和不同交通组织方案下的交通流特性进行分析。结果表明减少乘私家车上学比例,针对不同道路级别实施在自组织基础上的不同交通组织优化措施能使该区域实现有序的它组织,从而提高道路通行效率、保证交通安全;证明了该综合仿真模型的有效性和可行性,为其它道路交织区域混合交通流仿真提供参考。qkgag8879环亚手机|首页主页

关键词:交通流综合仿真;社会力模型;交织规则;元胞自动机模型;中小学门口道路qkgag8879环亚手机|首页主页

中图分类号:TP273.5; U491.5 ??????文献标识码:A?????? 文章编号:1004-731X (2018) 03-1162-10qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803049qkgag8879环亚手机|首页主页

Integrated Simulation of Mixed Traffic Flow on Elementary and Middle School Gate’s Road When Students Going to Schoolqkgag8879环亚手机|首页主页

Pang Mingbao, Pei Yanan, Zhang Ningqkgag8879环亚手机|首页主页

(School of Civil and Transportation, Hebei University of Technology, Tianjin 300401, China)qkgag8879环亚手机|首页主页

Abstract: Synthesizing the advantages and disadvantages of social force model (SFM) and cellular automaton model (CAM), a simulation model of mixed traffic flow including pedestrian, motor vehicle and non-motorized vehicle on the interference road section of elementary and middle school’s gate when students going to school was established. The traffic flow characteristics after changing the proportion of students going to school by private car and implementing different traffic organization schemes were analyzed. The results of the examples indicate that its organization phenomena can be realized by decreasing the proportion of pupils taking private cars and implementing different measures of traffic organization optimization according to the different road classes based on self-organization, which enhances the road traffic efficiency and ensures the traffic safety. Meanwhile, the effectiveness and feasibilities of the integrated simulation model are verified. Furthermore these can provide some reference values for the mixed traffic flow simulation of other road interference section.qkgag8879环亚手机|首页主页

Keywords: integrated simulation of traffic flow; social force model (SFM); interference rule; cellular automaton model (CAM); elementary and middle school gate’s roadqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

多跨反对称拱塔斜拉桥受力性能研究qkgag8879环亚手机|首页主页

刘习军,袁博,刘天翼qkgag8879环亚手机|首页主页

(天津大学机械工程学院,天津 300354)qkgag8879环亚手机|首页主页

摘要:。为探究反对称拱塔斜拉桥在不同拱塔截面和矢跨比下的受力状态,分析了在不同拱截面和矢跨比的情况下桥梁的受力状况。通过有限元仿真计算讨论了在恒载、恒温等条件下,不同矢跨比和不同类型拱截面的拱肋应力、桥面的挠度和相应的动态特性。计算结果表明:在相同截面面积的条件下,相比于其他类型的拱塔截面,圆截面的受力性能更好,桥面挠度较小且拱塔上最大应力显着降低,整桥刚度较大。对反对称拱塔斜拉桥进行了模态分析,为桥梁的建设及抗震设计等提供了一定的理论依据。qkgag8879环亚手机|首页主页

关键词:桥梁工程;有限元;斜拉桥;矢跨比qkgag8879环亚手机|首页主页

中图分类号:U441.5 ??????文献标识码:A?????? 文章编号:1004-731X (2018) 03-1171-07qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803050qkgag8879环亚手机|首页主页

Structure Optimization Analysis of Multi-span Antisymmetric Arch Tower Cable-stayed Bridgeqkgag8879环亚手机|首页主页

Liu Xijun, Yuan Bo, Liu Tianyiqkgag8879环亚手机|首页主页

(School of Mechanical Engineering, Tianjin University, Tianjin 300354, China)qkgag8879环亚手机|首页主页

Abstract: In order to analyze its force under different sections and arch span ratio of the Antisymmetric arch tower cable-stayed bridge the paper takes an anti-symmetric arch tower cable-stayed bridge as an engineering example. Considering the effect of dead load and temperature, finite software is used to calculate the stress of the arch tower and deflection of the deck and its corresponding dynamic characteristics under different types of arch sections and different rise-span ratio of the arch. The results show that the circular cross-section has better mechanical performance compared with other types of arches tower section with the same cross-sectional area. When it is circular cross section arch tower, the bridge deflection is smaller, while the tower arch maximum stress can be significantly reduced. In the same condition when arch tower section is circular cross-section, the entire bridge has a higher base frequency, rigidity is greater. This paper also conducts a preliminary analysis for the bridge vibration mode, providing a certain reference for the construction of these bridges.qkgag8879环亚手机|首页主页

Keywords: bridge engineering; finite element; cable-stayed bridge; span ratioqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

求解集装箱码头泊位-岸桥分配多目标算法qkgag8879环亚手机|首页主页

王旭1,2,刘士新2,张瑞友2,王佳3qkgag8879环亚手机|首页主页

(1.河北环境工程学院经济学院, 秦皇岛 066102; 2.东北大学信息科学与工程学院流程工业综合自动化国家重点实验室,沈阳 1108193.东北大学秦皇岛分校经济学院,秦皇岛 066004)qkgag8879环亚手机|首页主页

摘要:针对低碳型集装箱码头连续泊位-岸桥分配问题,考虑到港时间不确定性和集卡运输能力受限等约束,建立了以最小化船舶碳排放和平均延迟时间为目标的多目标非线性混合整数规划模型,采用高效非支配排序的遗传算法(Efficient Non-dominate Sort Genetic AlogrithmIIENSGA-II)对模型进行求解。针对问题的特点,设计了4链编码规则和基于滚动仿真的解码规则、带精英选择的PPX交叉算子、多约束下变异算子和不可行解修复算子。通过多组测试算例对算法进行测试,实验结果表明:与NSGA-IIMNSGA-II相比,ENSGA-II能快速求得满意解,适合求解本文问题。qkgag8879环亚手机|首页主页

关键词:低碳;泊位岸桥分配;多目标;ENSGA-II;仿真qkgag8879环亚手机|首页主页

中图分类号:TP391 ??????文献标识码:A?????? 文章编号:1004-731X (2018) 03-1178-12qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803051qkgag8879环亚手机|首页主页

Integrated Berth and Quay Crane Allocation Multi-objective Algorithm for Container Terminalqkgag8879环亚手机|首页主页

Wang Xu1,2, Liu Shixin2, Zhang Ruiyou2, Wang Jia3qkgag8879环亚手机|首页主页

(1.School of Economics, Hebei University of Environmental Engineering, Qinhuangdao 066102, China; 2.College of Information Science & Engineering, Northeastern University, State Key Laboratory of Synthetical Automation for Process Industries, Shenyang 110819, China; 3.School of Economics, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China)qkgag8879环亚手机|首页主页

Abstract: This paper researches on a continuous berth and quay crane allocation problem for low carbon container terminal. Considering the constraints of stochastic arrival time and limited truck transportation ability, a multi-objective nonlinear mixed integer programming model is established to minimize carbon emissions and average delay time. An efficient non-dominate sorting genetic algorithm II (ENSGA-II) is designed to deal with this problem. According to the characteristics of the problem, encoding rule and decoding rule based on rolling-horizon simulation, PPX crossover operator with elite selection, multi constraints mutation operator and repair operator are adopted. The results of several simulation experiments show that ENSGA-II can get the satisfied solution more quickly than NSGAII and MNSGA-II. Moreover, it’s suitable for solving integrated berth and quay crane allocation problem.qkgag8879环亚手机|首页主页

Keywords: low carbon; berth and quay crane allocation; multi-objective; ENSGA-II; simulationqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

动态网络最短程求解技术研究qkgag8879环亚手机|首页主页

王伦文1,张铃2qkgag8879环亚手机|首页主页

(1. 国防科技大学电子对抗学院,合肥 2300372. 安徽大学计算机学院,合肥 230039)qkgag8879环亚手机|首页主页

摘要:分析了动态网络最短程求解的研究现状,研究了动态网络的结构与求解最短程之间的关系。定义了以速度建模的动态网络,证明其满足弱FIFO(First In First Out)条件;证明了满足弱FIFO的充分必要条件是网络的任一条边的通过函数均是非降函数,通过函数均是非降函数的网络等价于用速度定义的动态网络;证明了动态网络可直接利用Dijkstra算法求解最短程的充分条件;研究了怎样建立满足弱FIFO条件或等价条件的动态网络,给出了基于弱FIFO动态网络求解最短程的算法,并通过一个典型的例子说明上述方法的有效性.qkgag8879环亚手机|首页主页

关键词:动态网络;最短程;先进先出;弱FIFOqkgag8879环亚手机|首页主页

中图分类号:TP18????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-1189-06qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803052qkgag8879环亚手机|首页主页

A Method of Finding the Shortest Path of Dynamic Networksqkgag8879环亚手机|首页主页

Wang Lunwen1, Zhang Ling2qkgag8879环亚手机|首页主页

(1. Electronic Countermeasure Institute of National University of Defense Technology, Hefei 230037, China; 2. Department of Computer Science and Technology, Anhui University, Hefei 230039, China)qkgag8879环亚手机|首页主页

Abstract: We analyze the research status of finding the shortest path of dynamic networks, analyze the complexity of getting the shortest path, study the relationship between the structure of the dynamic networks and finding the shortest path of the dynamic networks. It is proved that dynamic networks defined by velocity automatically meet weak FIFO’s condition. The networks whose passing function of any side is not decreasing function equals dynamic networks which use velocity. The sufficient condition of directly using Dijkstra algorithm to get the shortest path is that the networks must meet weak FIFO’s condition. How to build a dynamic network which can automatically meet FIFO’s condition or meet FIFO’s equivalent condition is studied, and an algorithm of getting the shortest path of the dynamic networks is given. An example is given to explain the validity of our methods.qkgag8879环亚手机|首页主页

Keywords: dynamic networks; the shortest path; first in first out; weak FIFOqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

基于摩擦和干扰补偿的转台模糊反演滑模控制qkgag8879环亚手机|首页主页

刘慧博,刘尚磊qkgag8879环亚手机|首页主页

(内蒙古科技大学信息工程学院,内蒙古 包头 014010qkgag8879环亚手机|首页主页

摘要:针对转台中的摩擦、建模误差等不确定性,采用基于摩擦模型和非线性干扰观测器相结合的补偿策略。首先对摩擦进行建模并通过遗传算法辨识模型参数,利用辨识的模型进行补偿;其次使用非线性干扰观测器对建模误差、摩擦的欠、过补偿等扰动进行估计,利用估计值做进一步补偿。采用反演滑模控制器,保证了系统的稳定性;利用模糊算法调整滑模控制的切换增益以降低抖振仿真结果表明,该方法降低了摩擦等不确定性对系统的影响,减弱了滑模引起的抖振,提高了系统的控制精度及抗干扰性。qkgag8879环亚手机|首页主页

关键词:转台;摩擦补偿;非线性干扰观测器;遗传算法;模糊算法;反演滑模控制qkgag8879环亚手机|首页主页

中图分类号:TP273????? 文献标识码:A?????? 文章编号:1004-731X (2018) 03-1195-09qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803053qkgag8879环亚手机|首页主页

Fuzzy Sliding Backstepping Mode Control for Flight Simulator Servo Based on Friction and Disturbance Compensationqkgag8879环亚手机|首页主页

Liu Huibo, Liu Shangleiqkgag8879环亚手机|首页主页

(School of Information Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China)qkgag8879环亚手机|首页主页

Abstract: Considering friction, modeling errors and other uncertainties of flight simulator servo system, a compensation strategy which combines model-based friction compensation with nonlinear disturbance observer compensation was proposed. First, the friction is modeled , whose parameters are identified by using genetic algorithm, and using the identified model to compensate. Second, using a nonlinear disturbance observer to estimate the modeling errors, friction less-compensation or over-compensation and other uncertainties, and using this observed value to compensate. The system adopted sliding backstepping controller to ensure the stabilization of the system. Finally, the fuzzy algorithm is adopted to adjust the switching gain of sliding mode to reduce the chattering of the system. The simulation results show the method can reduce the influence of friction and modeling errors and other uncertainties, weakened the chattering caused by sliding mode, improved the control precision and anti-interference of the system.qkgag8879环亚手机|首页主页

Keywords: flight simulator; friction compensation; nonlinear disturbance observer; genetic algorithm; fuzzy algorithm; sliding backstepping mode controlqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

逼近误差的范数最小化的区间模糊模型建模qkgag8879环亚手机|首页主页

刘小雍,熊中刚,阎昌国qkgag8879环亚手机|首页主页

(遵义师范学院工学院,贵州 遵义 563002)qkgag8879环亚手机|首页主页

摘要:实际应用中所获取到的数据往往呈现出不确定性或不准确性,传统的确定性建模方法很难对这一类型的数据进行描述。通过将线性规划与TS模糊模型相结合,应用逼近误差的范数最小化原理,研究了基于TS模糊模型的区间建模方法,其中区间模型分别由上界和下界TS模型构成。为了求解上、下界TS模型,基于逼近误差的范数最小化被用于建立各自的优化问题,将其转化为标准的线性规划对其求解得到区间模糊模型。提出的方法较好地解决了传统方法建模带有不确定性数据的非线性系统时得到的是确定性模型问题,不能很好的描述不确定或不准确的数据。论证了该方法具有较好的鲁棒性。qkgag8879环亚手机|首页主页

关键词:逼近误差的范数;区间模糊模型;线性规划;TS模糊模型qkgag8879环亚手机|首页主页

中图分类号:TP391.9??????? 文献标识码:A??????? 文章编号:1004-731X (2018) 03-1203-07qkgag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201803054qkgag8879环亚手机|首页主页

Interval Fuzzy Modeling Based on Minimizing-norm on Approximation Errorqkgag8879环亚手机|首页主页

Liu Xiaoyong, Xiong Zhonggang, Yan Changguoqkgag8879环亚手机|首页主页

(College of engineering and technology, Zunyi Normal College, Zunyi 563002, China)qkgag8879环亚手机|首页主页

Abstract:As the obtained data in many practical applications tend to be uncertain or inaccurate, conventional modeling methods characterized by deterministic model for this type of data have become undesirable. Taking linear programming and TS fuzzy model and some ideas from norm minimization into consideration, a novel method identifying interval fuzzy model (INFUMO) consisting of upper and lower TS fuzzy model (referred to as fU and fL) has been studied. In order to solve INFUMO, optimization problems based on minimizing-norm with respect to approximation error corresponding to fU and fL are constructed. Finally, optimization problems are solved by linear programming and INFUMO is thus constructed. The proposed method not only can deal with the problem that the conventional modeling method of uncertain data usually results in deterministic model, but also has better robustness.qkgag8879环亚手机|首页主页

Keywords: norm on approximation error; INFUMO; linear programming; TS fuzzy modelqkgag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※qkgag8879环亚手机|首页主页

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