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2017年第12期

时间:2018-01-10 11:48:43??来源:??作者:

?下一代三维图形引擎发展趋势研究eQAag8879环亚手机|首页主页

eQAag8879环亚手机|首页主页

赵维,茅坪,沈凡宇eQAag8879环亚手机|首页主页

(海军研究院空中所,上海 200436eQAag8879环亚手机|首页主页

摘要:介绍了游戏引擎和虚拟现实引擎的发展现状、相互关系及区别,将两种引擎统称为三维图形引擎。综合考虑计算机硬件、软件、仿真理论等的进步,分析场景管理、几何模型构建、物理学仿真、光照和着色等技术目前存在的瓶颈及不足,研究这些技术的后续发展需求及发展趋势;提出了自适应多线程渲染技术、高级实时动态变形技术、一体化碰撞检测技术、自主化碰撞处理技术概念,并对这些概念的特征进行了简单描述,可为下一代三维图形引擎的开发提供参考和借鉴。eQAag8879环亚手机|首页主页

关键词:图形引擎;三维仿真;虚拟现实;游戏引擎eQAag8879环亚手机|首页主页

中图分类号:TP391.77????? 文献标识码:B?????? 文章编号:1004-731X (2017) 12-2935-10eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712001eQAag8879环亚手机|首页主页

Development Trend of Next Generation 3D Graphics EngineseQAag8879环亚手机|首页主页

Zhao Wei, Mao Ping, Shen FanyueQAag8879环亚手机|首页主页

(Aviation Institute of Naval Academy, Shanghai 200436, China)eQAag8879环亚手机|首页主页

Abstract: The development, relationship and differences between game engine and virtual reality engine were introduced, a joint name of 3D graphics engine was proposed. The bottlenecks and shortages of scene management, geometry model creating, physics simulation, lighting, shading, etc. were analyzed by synthetically considering the advancements in computer hardware, softwares and simulation theories, etc.. The development demands and trends were researched, the Concept of adaptive multi-thread shading technology, advanced real-time dynamic deformation technology, integrated collision detection technology, independent of the collision process technology were proposed for the first time, and a brief features description of these concepts were give, it can provided reference for developing the next generation 3D Graphics Engine.eQAag8879环亚手机|首页主页

Keywords: graphics engine; 3D simulation; virtual reality; game engineeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

一种参数化的牙颌有限元自动建模方法eQAag8879环亚手机|首页主页

魏毅1,3,朱登明2eQAag8879环亚手机|首页主页

(1. 武夷学院数学与计算机学院,福建 武夷山3543002. 中国科学院计算技术研究所前瞻研究实验室,北京 1001903. 认知计算与智能信息处理福建省高校重点实验室,福建 武夷山354300)eQAag8879环亚手机|首页主页

摘要:针对现有牙颌有限元建模方法存在低效和缺乏个性化的缺点,提出一种参数化的牙颌有限元自动建模方法。通过实体造型技术对牙颌初始三维几何模型进行处理,生成牙周膜、牙槽的三维几何模型;根据齿列的配置参数和单元参数对牙颌模型进行网格划分;基于Ansys的参数化程序设计语言,开发了面向牙颌的有限元自动建模系统,并在真实的牙颌数据集上进行了建模实验。实验结果表明该系统能自动高效地生成个性化牙颌系统的有限元模型。eQAag8879环亚手机|首页主页

关键词:个性化牙颌系统;牙颌实体造型;自动有限元建模;牙颌功能仿真eQAag8879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(2017)12-2945-08eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712002eQAag8879环亚手机|首页主页

Parametric Approachfor Automatic Generation of Finite Element Modelfor Dental SystemeQAag8879环亚手机|首页主页

Wei Yi1,3, Zhu Dengming2eQAag8879环亚手机|首页主页

(1. School of Mathematics and Computer, Wuyi University, Wuyishan 354300, China;2. Advanced Computing Research Laboratory, Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100190, China;eQAag8879环亚手机|首页主页
3. Fujian Provincial Key Lab of Cognitive Computing and Intelligent Information Processing, Wuyishan 354300, China)
eQAag8879环亚手机|首页主页

Abstract:Aiming at overcoming the disadvantages of currentmodeling methods for dental system, such as poor efficiency and lack of personality, a method for automatic generation of finite element model for personalized dental systemis proposed. On the basis ofthe original 3Ddental model, a3Dmodel of pericementum and phatnomaiscreatedby technology of solid modeling.According tothe configuration parameters of dentition and finite elements, a finite element model of the personalized dental system is generated. Based on Ansys parametric design language, anautomatic finite element modeling system of dental system is implemented. By this modeling system, experiments are performed based on the real data of dental system and the results show that this proposed method can automatically generate the finite element model for the personalized dental systemefficiently.eQAag8879环亚手机|首页主页

Keywords:personalized dental model; solid modeling for dental system; automatic finite element modeling; simulation of dental functioneQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

面向移动终端的室内地图设计与表达新模式eQAag8879环亚手机|首页主页

邓晨,田江鹏,夏青eQAag8879环亚手机|首页主页

(信息工程大学 地理空间信息学院,河南 郑州 450001eQAag8879环亚手机|首页主页

摘要:室内地图是室内位置服务的信息载体,地图表达效果会影响到室内空间信息的传输效率。在总结和借鉴当前研究成果的基础上,以提高室内地图符号设计效果、丰富和创新室内地图表达方式为目的,研究了室内地图设计与表达的新模式。对室内地图要素分类分级方法、三维非仿真符号设计思想及其应用价值进行总结与论述;提出了面向移动终端的室内地图要素符号化整体思路,并实现了地图要素二维与三维符号化;基于符号设计成果,提出了地图综合表达与应用的新模式。eQAag8879环亚手机|首页主页

关键词:室内地图;三维地图;地图符号设计;三维非仿真;室内位置服务eQAag8879环亚手机|首页主页

中图分类号:TP391.72????? 文献标识码:A?????? 文章编号:1004-731X (2017) 12-2952-12eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712003eQAag8879环亚手机|首页主页

New Model for Mobile Indoor Maps Design and ExpressioneQAag8879环亚手机|首页主页

Deng Chen, Tian Jiangpeng, Xia QingeQAag8879环亚手机|首页主页

(Institute of Geographical Spatial Information, Information Engineering University, Zhengzhou 450001, China)eQAag8879环亚手机|首页主页

Abstract: Indoor maps are the basis and information carrier of indoor location services, and the transmission efficiency of the map information would be affected by the design of indoor maps. In order to improve the effect of indoor map symbol design, enrich and innovate the indoor map expression, a new model of indoor map design and expression is studied on the basis of summarizing and drawing lessons from the current research results. Firstly, the methods for classifying and grading the map elements, and the ideas and application values of the method for three dimensional non-photorealistic symbol design are summarized and discussed. Then, the ideas for indoor map elements symbol design of the mobile terminal are proposed, and the symbolization of two and three dimension is implemented. Finally, a new model of indoor map comprehensive expression and application is presented based on the results of indoor map elements symbol design.eQAag8879环亚手机|首页主页

Keywords: indoor maps; three dimensional maps; map symbol design; three dimensional non-photorealistic; indoor location-based serviceseQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

基于拉格朗日乘子和测量残差的参数辨识eQAag8879环亚手机|首页主页

贺智1,聂志成2,秦怡宁1,樊友平3*eQAag8879环亚手机|首页主页

(1. 中国南方电网超高压输电公司曲靖局,云南 曲靖 6550002. 三峡大学电气与新能源学院,湖北 宜昌 4430003. 武汉大学电气工程学院,湖北 武汉 430072)eQAag8879环亚手机|首页主页

摘要:为满足现代电力系统的安全稳定控制、暂稳态分析,需要保证估计参数的精确性,通过对测量残差的分析提出了一个基于拉格朗日乘子和测量残差法的电网参数辨识方法。分两步完成参数的辨识:根据拉格朗日乘子法利用标准化的拉格朗日乘子对应于参数误差,通过判断相对于阈值的大小来判断哪些参数存在误差,自动检测辨识出有误差的参数;根据测量残差法利用测量冗余的残差相量,基于测量方程中的测量残差矩阵在解耦时所产生的偏差分量的估计值,估算参数误差。IEEE14节点系统的仿真验证了算法的正确性和有效性。eQAag8879环亚手机|首页主页

关键词:电力系统网络;拉格朗日乘子;测量残差;参数辨识;状态估计eQAag8879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 (2017) 12-2964-08eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712004eQAag8879环亚手机|首页主页

Parameter Identification Method Based on LagrangeMultiplier and Measuring Residual ErroreQAag8879环亚手机|首页主页

He Zhi1, Nie Zhicheng2, Qin Yining1, Fan Youping3*eQAag8879环亚手机|首页主页

(1.China Southern Power Grid EHV Power Transmission Company Qujing Division, Qujing 655000, China; 2. Three Gorges UniversityCollege of Electrical Engineering and New Energy, Yichang 443000, China; 3. Wuhan UniversitySchool of Electrical Engineering, Wuhan 430072, China)eQAag8879环亚手机|首页主页

Abstract:To satisfy the security and stability control, transient and steady state analysis of power system, it is necessary to ensure the accuracy of the estimated parameters. A method of parameter identification in power system based on Lagrange multiplier and measurement method of residualis proposed through analysis of measurement residuals. A two-step approach for parameter identification is introduced. Based on Lagrange multiplier method, using thestandardized Lagrange multiplier corresponding to the parameter error the parameters with errors can be judged by the size relative to the threshold and can bedetected and identified automatically. The residual vector of measurement redundancy is used to estimate the errors of the network parameters, which is based on the deviation component formed in the course of decoupling matrix of measurement residual errors of the measurement equation. The simulation on IEEE 14 bus system proves that the algorithm is correct and effective.eQAag8879环亚手机|首页主页

Keywords: power system network; Lagrange multiplier; measuring residual error; parameter identification; state estimationeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

基于解析速度仿真动脉瘤超声多普勒血流信号eQAag8879环亚手机|首页主页

高莲1,张榆锋1*,阎金娥1,李支尧2,章克信3,熊敏1,韩素雅1eQAag8879环亚手机|首页主页

1.云南大学信息学院电子工程系,昆明 6500912.昆明医科大学第三附属医院 云南省肿瘤医院超声科,昆明 6501183.昆明医科大学第二附属医院,昆明 650031eQAag8879环亚手机|首页主页

摘要:提出一种基于解析速度分布的动脉瘤超声多普勒血流信号仿真方法。根据动脉瘤上游均匀段中心轴向脉动血流速度,解析求解血流动量及质量守恒线性化Navier-Stokes方程,获得不同病变程度动脉瘤血管内血流速度剖面;使用总体分布的非参数估计获得病变血管内血流功率谱密度;通过累加余弦信号仿真超声多普勒脉动血流信号。该模型仿真的动脉瘤超声多普勒血流信号与临床采集的实际信号具有相同特征,可用于动脉瘤疾病发生及发展的超声多普勒检测研究。eQAag8879环亚手机|首页主页

关键词:动脉瘤;解析速度分布;超声多普勒血流信号;仿真研究eQAag8879环亚手机|首页主页

中图分类号:R318.08?? ????文献标识码:A??? ???文章编号:1004-731X (2017) 12-2972-08eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712005eQAag8879环亚手机|首页主页

Doppler Ultrasound Blood Flow Signal Simulation of Aneurysm
Based on Analytical Velocity Distribution
eQAag8879环亚手机|首页主页

Gao Lian1, Zhang Yufeng1*, Yan Jine1, Li Zhiyao2, Zhang Kexin3, Xiong Min1, Han Suya1eQAag8879环亚手机|首页主页

(1.Department of Electronic Engineering, Information School, Yunnan University, Kunming 650091, China2.The Third Affiliated Hospital of Kunming Medical College,The Ultrasound department, Kunming 650118, ChinaeQAag8879环亚手机|首页主页
3.The Second Affiliated Hospital of Kunming Medical College, Kunming 650031, China)
eQAag8879环亚手机|首页主页

Abstract: For simulating the Doppler ultrasound blood flow signals in the vessels with aneurysms at different stages of development, this paper presents a simulation model in which the Doppler ultrasound blood flow signals are obtained by employing cosine-superposed constituents which are modulated by a power spectral density (PSD) estimated from velocity profile calculated by analytically solving the Navier-Stokes equations according to the axis-centerline velocity at the upstream faraway segment of the aneurysms. In the experiments, the Doppler ultrasound blood flow signals in the normal vessels and vessels with aneurysms having different dilations are generated, respectively. The simulated Doppler ultrasound blood flow signals in the aneurysms have characteristics similar to those found in practice, and could be used as the detection algorithms for the occurrence and development of aneurysms disease.eQAag8879环亚手机|首页主页

Keywords: aneurysm; analytical velocity distribution; Doppler ultrasound blood flow signal; simulationeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

黄土高填方工程监测信息可视化eQAag8879环亚手机|首页主页

郑利平,陈伟,廖婷,路畅eQAag8879环亚手机|首页主页

(合肥工业大学计算机与信息学院,合肥 230009eQAag8879环亚手机|首页主页

摘要:黄土高填方工程因其超大土石方量、建设环境复杂、相互影响因素多等特点,建设施工技术复杂。针对这种情况提出一种基于三维GIS的高填方工程信息动态可视化方法,通过建立黄土高填方地质体模型、对比分析、可视化分析,实现了不同时间下黄土高填方施工地形动态仿真、挖填方过程和施工检测数据的可视化呈现和分析。结果可看出采用的可视化方法能直观、准确地展示施工过程,帮助施工管理者更加方便地掌握、管理施工过程。eQAag8879环亚手机|首页主页

关键词:黄土高填方;三维GIS;监测信息;可视化eQAag8879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 (2017) 12-2980-06eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712006eQAag8879环亚手机|首页主页

Monitoring Information Visualization for High-filling Loess ProjecteQAag8879环亚手机|首页主页

Zheng Liping, Chen Wei, Liao Ting, Lu ChangeQAag8879环亚手机|首页主页

(School of Computer and Information, Hefei University of Technology, Hefei 230009, China)eQAag8879环亚手机|首页主页

Abstract:The construction of high-filled loess project facessome engineering and technical challenges,such as large and complex earth excavation and earth backfilling operations. According to this situation, this paper presents a dynamic visualization methods for high-filled project based on 3D GIS. By establishing the model of high-filled loess, comparative analysis and visual analysis, dynamic simulation of high-filled loess project, visualization and analysis of Dig-Fill process and monitoring information arerealized. The results show that this visualization method can directly and accurately display the construction process, help decision makers master construction information and process.eQAag8879环亚手机|首页主页

Keywords:high-filled loess project; 3D GIS; monitoring information; visualizationeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

混合型燃料电池汽车动力系统零下冷启动仿真eQAag8879环亚手机|首页主页

张新丰,罗明慧,姚川棋,戴维,常国峰eQAag8879环亚手机|首页主页

(同济大学新能源汽车工程中心,上海 201804)eQAag8879环亚手机|首页主页

摘要:燃料电池汽车在零下冷起动仍然是制约燃料电池汽车商业化的技术难点问题。研究了能量混合型燃料电池汽车动力系统的零下冷起动电堆的温升过程。依据动力蓄电池、燃料电池的电化学特性、热动力学特性,以及燃料电池辅助系统特性,建立了电电混合型燃料电池汽车动力系统零下冷起动过程的仿真模型;利用MATLAB/Simulink作为仿真工具,研究不同加热功率对电堆温升过程中能量消耗与动力电池状态变化的影响,为动力系统配置和能耗优化控制提供了依据。eQAag8879环亚手机|首页主页

关键词:混合型燃料电池汽车;动力系统;零下冷起动;电堆温升过程;仿真实验研究eQAag8879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 (2017) 12-2986-08eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712007eQAag8879环亚手机|首页主页

Sub-zero Cold Start Simulation of Hybrid Fuel Cell Vehicle DrivetraineQAag8879环亚手机|首页主页

Zhang Xinfeng, Luo Minghui, Yao Chuanqi, Dai Wei, Chang GuofengeQAag8879环亚手机|首页主页

(Clean energy Automotive Engineering Center, Tongji University, Shanghai 201804, China)eQAag8879环亚手机|首页主页

Abstract: Sub-zero cold start is a major obstacle for PEM fuel cell vehicle’s commercialization. This paper aims to study the sub-zero cold starting process of hybrid fuel cell vehicle. A thermo-electro-mechanical coupling model was built based on the electro-chemical and thermal dynamic performance of battery and fuel cell, as well as the mechanical dynamic performance of fuel cell’s auxiliary system. A computational model was also set up based on MATLAB/simulink. Through simulations under different heat powers, the energy consumption and battery state of charge are analyzed, which help to optimize power train’s configuration and control strategy.eQAag8879环亚手机|首页主页

Keywords: PEM hybrid fuel cell vehicle; power train system; sub-freezing start up; stack warm up; simulation experiment researcheQAag8879环亚手机|首页主页

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液动压悬浮抛光固液两相流数值模拟eQAag8879环亚手机|首页主页

朱胜伟,张丽慧*,洪滔,章城eQAag8879环亚手机|首页主页

(浙江工业大学特种装备制造与先进加工技术教育部重点实验室,杭州 310014eQAag8879环亚手机|首页主页

摘要:针对带有约束边界的新型液动压悬浮抛光方法,采用计算流体力学方法(CFD)和正交试验方法讨论悬浮抛光加工过程中,在不同加工工况对流场动压力及磨粒与壁面撞击状况的影响。模拟结果表明:抛光盘转速ω是影响流场动压力分布和固相颗粒撞击工件表面的速度大小的主要因素,随转速增大,压力和速度显着增大,加工间隙H,影响最小的是抛光液浓度φ。最佳试验参数为ω=1500 r/minH=50 μmφ=0.3。该参数下,工件区域的流场压力分布较为均匀,沿径向方向压力分布有一定梯度,速度梯度较小,有助于快速均匀地去除工件材料。eQAag8879环亚手机|首页主页

关键词:液动压悬浮抛光;流场动压力;磨粒速度;两相流eQAag8879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 (2017) 12-2993-08eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712008eQAag8879环亚手机|首页主页

Solid-liquid Two-phase Flow Simulation of Hydrodynamic Suspension PolishingeQAag8879环亚手机|首页主页

Zhu Shengwei, Zhang Lihui*, Hong Tao, Zhang ChengeQAag8879环亚手机|首页主页

(Key Laboratory f E&M, Ministry of Education&Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, China)eQAag8879环亚手机|首页主页

Abstract: According to the new method of hydrodynamic suspension polishing, CFD software is used to simulate the polishing to obtain the distribution of fluid pressure and the velocity of the particles impacting on the work piece surface under different working conditions by the method of orthogonal design. The simulation results show that the rotational speed ω of the disc is the main factor affecting the dynamic pressure and the abrasive particle velocity, while the machining gap H is the secondary factor,and the least influence factor is the polishing liquid concentration φ. The optimal design parameters are: ω=1500 r/min, H=50 μm, φ=0.3. Under the combined parameters, the distribution of the fluid dynamic pressure gradient along the radial direction, the velocity field distribution of the workpiece is consistent with the velocity distribution of uniform circular motion, and the velocity can assure the polishing quality and efficiency. eQAag8879环亚手机|首页主页

Keywords: hydrodynamic suspension polishing; fluid dynamic pressure; abrasive particle velocity; two-phase floweQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

求解集装箱码头岸桥调度问题的化学反应算法eQAag8879环亚手机|首页主页

王旭1,2,刘士新2,张瑞友2,王佳3eQAag8879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066004eQAag8879环亚手机|首页主页

摘要:研究了集装箱码头卸船作业中的岸桥调度问题。考虑岸桥的时间窗约束,建立了岸桥卸船作业的仿真优化模型,设计了一类基于双链分子结构的化学反应算法。该算法的编码包含两部分,分别为任务的优先关系和为任务分配的岸桥序列,解码过程采用离散事件动态仿真方法进行。针对问题的特点,设计了4种分子碰撞算子。通过算例生成器生成的仿真数据对模型和算法进行了仿真测试,结果表明:与CPLEX和遗传算法相比,该算法可在很短的时间内求得稳定的满意解,验证了模型和算法的有效性。eQAag8879环亚手机|首页主页

关键词:卸船作业;化学反应算法;双链分子结构;离散事件动态仿真eQAag8879环亚手机|首页主页

中图分类号:C934??????????? 文献标识码:A??????? 文章编号:1004-731X (2017) 12-3001-09eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712009eQAag8879环亚手机|首页主页

Chemical Reaction Optimization Algorithmfor Solving QuayCrane Scheduling Problems of Container TerminaleQAag8879环亚手机|首页主页

Wang Xu1,2, Liu Shixin2, Zhang Ruiyou2, Wang Jia3eQAag8879环亚手机|首页主页

(1.SchoolofEconomics, 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.SchoolofEconomics, NortheasternUniversity atQinhuangdao, Qinhuangdao 066004, China)eQAag8879环亚手机|首页主页

Abstract: This paper researches on quay crane scheduling for unloading operations in container terminal. Considering quay crane work within its time window, an unloading scheduling simulation model is established.According to the characteristics of the unloading scheduling simulation model,a DoubleList Molecular Structure-based Chemical Reaction Optimization(DLMCRO) algorithm is developed. There are two parts in coding: one is the priority relation of the task, and the other is the task-to-quay-node mapping.Discrete Event Dynamic Simulation(DEDS)is used to simulate the decoding process. Four elementary chemical reaction operations against the problem are designed. The simulation experiment is madeby using data generator.The results of simulation show that DLMCRO can get a stable and satisfactory solution more quickly than CPLEX and GA. And its proved that the model and algorithm are effective.eQAag8879环亚手机|首页主页

Keywords: unloading operation; chemical reaction optimization; double list molecular structure; discrete event dynamic simulationeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

虚拟现实技术在PLC燃气锅炉培训系统中的应用eQAag8879环亚手机|首页主页

王大虎,陈侠,高会争eQAag8879环亚手机|首页主页

(河南理工大学 电气工程与自动化学院,河南 焦作 454003eQAag8879环亚手机|首页主页

摘要:针对PLC调试传统培训方式不能多方位展现被控对象运行状态的问题,以典型的控制对象燃气锅炉为例,基于虚拟现实技术开发了一个PLC虚拟仿真培训系统。系统由上位机和下位机组成,通过RS232数据总线连接。上位机采用3ds Max对设备装置进行建模、渲染,在Unity3D中构建完整地虚拟场景。下位机以PLC为控制核心设计控制板,利用通信接口模块实现PLC与虚拟场景之间的数据传输,完成对虚拟锅炉的控制。经测试系统可正常运行,学员能够安全高效地编程并进行调试,了解和生产现场相似的工艺流程,提高培训效率,缩短培训周期,减少培训成本,具有较高的经济性和安全性。eQAag8879环亚手机|首页主页

关键词:虚拟现实;PLC;培训系统;燃气锅炉;Unity3DeQAag8879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 (2017) 12-3010-06eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712010eQAag8879环亚手机|首页主页

Application of Virtual Reality in PLC Gas-fired Boiler Training SystemeQAag8879环亚手机|首页主页

Wang Dahu, Chen Xia, Gao HuizhengeQAag8879环亚手机|首页主页

(School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454003, China)eQAag8879环亚手机|首页主页

Abstract: In view of the problem that traditional training methods for PLC debugging can not show the running states of controlled objects in full angles, a PLC virtual simulation training platform is designed based on virtual reality technology. The system is composed of upper computer and lower computer connected by RS232 bus. The upper computer uses 3ds Max to model and render facilities, and uses Unity3D to construct the complete virtual scene. The lower computer designs PLC control board to control the virtual gas-fired boiler, which transmits data between PLC and virtual scene through the communication module. The test result indicates that the system operates successfully. The learners can write and debug programs safely and efficiently. What’s more, they can directly feel the processes similar to production sites, which improves training efficiency, shortens training cycle and reduces the cost of same degree training.eQAag8879环亚手机|首页主页

Keywords: virtual reality; PLC; training system; gas-fired boiler; Unity3DeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

焦炉双联火道传热过程建模与仿真eQAag8879环亚手机|首页主页

沈坤1,2,王玲1,马天雨1eQAag8879环亚手机|首页主页

(1. 湖南师范大学物理与信息科学学院,湖南 长沙 4100812. 湖南大学电气与信息工程学院,湖南 长沙 410082)eQAag8879环亚手机|首页主页

摘要:针对具有废气循环的5.5 m焦炉立火道传热过程,分析了焦炉燃烧室内立火道的传热机理及双联火道的气体交换过程,构建了上升火道及下降火道传热过程的仿真模型。基于实际推焦装煤计划表,结合双联火道气体交换过程,利用仿真模型对炼焦生产过程中双联火道炉墙的表面温度特性进行了仿真分析。仿真结果表明,立火道墙面温度呈周期变化,下降火道炉墙表面温度以均匀间隔梯度分布,上升火道炉墙表面上部温度较高且基本相等;宏观上双联火道炉墙表面温度曲线呈现“W”型。eQAag8879环亚手机|首页主页

关键词:焦炉;双联火道;传热过程;气体交换;建模eQAag8879环亚手机|首页主页

中图分类号:TQ522.1????? 文献标识码:A?????? 文章编号:1004-731X (2017) 12-3016-07eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712011eQAag8879环亚手机|首页主页

Modeling and Simulation of Heat Transfer Process of Coke Oven Twin FlueeQAag8879环亚手机|首页主页

Shen Kun1,2, Wang Ling1, Ma Tianyu1eQAag8879环亚手机|首页主页

(1. Institute of Physics and Information Science, Hunan Normal University, Changsha 410081, China; 2. College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)eQAag8879环亚手机|首页主页

Abstract: To study the heat transfer process of flues in 5.5m coke oven with waste gas circulation, the heat transfer mechanism of flue in coke oven’s combustion chamber and gas exchange process of twin flue were analyzed; the simulation models of upflow flue and downflow flue were built respectively. According to tables of coke pushing and coal charging sequence in coking production, combining with gas exchange process in twin flue, the simulation analysis on surface temperature characteristics of twin flue walls in real coking production process were achieved by the designed simulation model. The simulation results show that the surface temperature of wall varies periodically; the surface temperature curves of downflow flue wall are gradient distribution with uniform intervals, but in middle and upper part of upflow flue wall, the temperatures of surface are higher and almost equal; on the macro level, the surface temperature curves of twin flue walls present ‘W’ style. eQAag8879环亚手机|首页主页

Keywords: coke oven; twin flue; heat transfer process; gas exchange; modelingeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

制导武器半实物仿真试验可信度评估研究eQAag8879环亚手机|首页主页

豆建斌,王小兵,单斌,张燕eQAag8879环亚手机|首页主页

(中国华阴兵器试验中心 制导武器试验鉴定仿真技术重点实验室,陕西 华阴 714200)eQAag8879环亚手机|首页主页

摘要:面向制导武器半实物仿真试验任务全周期,明确了制导武器半实物仿真试验可信度评估的概念,并从仿真系统可信度评估、仿真试验过程监测、仿真试验结果可信度评估三个层次对仿真试验可信度评估模型及流程进行了说明。构建了基于TOPSIS (Technique for Order Preference by Similarity to Ideal Solution)法的制导武器半实物仿真系统可信度评估方法及仿真与实弹飞行数据相结合的仿真试验结果可信度评估方法,并进行了应用验证。能够很好的分析仿真试验可信度,有效提高可信度评估的实际应用意义,为半实物仿真试验应用于制导武器鉴定试验提供有力支撑。eQAag8879环亚手机|首页主页

关键词:制导武器;半实物仿真;可信度评估;置信区间eQAag8879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 (2017) 12-3023-07eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712012eQAag8879环亚手机|首页主页

Credibility Evaluation of Hardware-in-the-loop Simulation Test for Guided WeaponseQAag8879环亚手机|首页主页

Dou Jianbin, Wang Xiaobing, Shan Bin, Zhang YaneQAag8879环亚手机|首页主页

(China HuaYin Ordnance Test Center Key Lab of Guided Weapons Test and Evaluation Simulation Technology, eQAag8879环亚手机|首页主页
Huayin 714200, China)
eQAag8879环亚手机|首页主页

Abstract: The thesis explained the concept of credibility evaluation of hardware-in-the-loop simulation. The models and the processes were introduced in three parts: credibility evaluation of simulation system, monitoring of simulation test process, and credibility evaluation of simulation results. The credibility evaluation model of hardware-in-the-loop simulation system was built based on TOPSIS and the credibility evaluation model of simulation results was built based on simulation and firing practace. This way could answer the credibility of hardware-in-the-loop simulation, and provide strong support for hardware-in-the-loop simulation in guided weapons test and evaluation.eQAag8879环亚手机|首页主页

Keywords: guided weapon; hardware-in-the-loop simulation; credibility evaluation; confidence intervaleQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

玉米果穗点云分割方法研究eQAag8879环亚手机|首页主页

温维亮1,2,郭新宇1,杨涛3,赵德达1,苗腾3*,朱宏宇4,董成玉4eQAag8879环亚手机|首页主页

(1. 北京农业信息技术研究中心/数字植物北京重点实验室,北京1000972.北京工业大学计算机学院,北京 1001243. 沈阳农业大学信息与电气工程学院,沈阳 1108664. 辽宁东亚种业有限公司,沈阳 110164)eQAag8879环亚手机|首页主页

摘要:玉米果穗的三维点云分割是玉米果穗三维表型特征计算与分析的基础。提出一种玉米果穗三维点云分割方法,采用SmartScan三维扫描仪获取玉米果穗三维点云数据;对点云进行重采样以实现点云简化;在此基础上,通过计算果穗点云中各点的法向量,对果穗点云进行收缩变换以增大籽粒点间的欧式距离,通过欧式聚类的方法实现果穗点云的分割。结果表明,果穗点云籽粒分割率可达到90%以上。方法为基于三维点云数据的玉米果穗表型性状研究提供了技术支撑。eQAag8879环亚手机|首页主页

关键词:玉米;点云分割;考种;欧式聚类eQAag8879环亚手机|首页主页

中图分类号:TP391.4?????? 文献标识码:A?????? 文章编号:1004-731X (2017)12-3030-06eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712013eQAag8879环亚手机|首页主页

Point Cloud Segmentation Method of Maize EareQAag8879环亚手机|首页主页

Wen Weiliang1,2,Guo Xinyu1, Yang Tao3, Zhao Deda1, Miao Teng3*, Zhu Hongyu4, Dong Chengyu4eQAag8879环亚手机|首页主页

(1. Beijing Research Center for Information Technology in Agriculture/ Beijing Key Lab of Digital Plant, Beijing 100097, China; 2.College of Computer Science, Beijing University of Technology, Beijing 100124, China;3.College of Information and Electrical Engineering, Shenyang Agricultural University, Shenyang 110866, china; 4.Liaoning Dongya Seed Co.Ltd, Shenyang 110164, China)eQAag8879环亚手机|首页主页

Abstract:Three-dimensional (3D) segmentation of maize ear is the fundamental research of 3D ear phenotype. A method of 3D segmentation for maize ear was proposed in this paper. Firstly, 3D point cloud of maize ear was acquired by using SmartScan 3D scanner. Then the point cloud was simplified by point cloud resampling to improve the efficiency of subsequent algorithm. And a contraction transformation was employed to increase the distance of neighboring grains in Euclidean space by estimating the normal of each point through k-neighbor algorithm. Finally, the point cloud of maize ear was segmented by Euclidean clustering. Results showed that the segmentation rate of grains could achieve more than 90%. Our method could provide technology support for the research of 3D ear phenotype analysis.eQAag8879环亚手机|首页主页

Keywords:maize; point cloud segmentation; ear analysis; Euclidean clusteringeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

分布式聚类在农场环境数据异常检测中的应用eQAag8879环亚手机|首页主页

邓丽1,2,庞洪霖1,2,王灵1,2,费敏锐1,2eQAag8879环亚手机|首页主页

(1. 上海大学机电工程与自动化学院,上海 2000722. 上海市电站自动化技术重点实验室,上海 200072)eQAag8879环亚手机|首页主页

摘要:为了处理大量分布式存储的农场环境数据,为作物增产提供异常环境参考并制定预防策略,本文结合农场环境数据的特点,在Hadoop平台中实现了对农场环境数据的Dirichlet过程混合模型聚类,并提出了基于聚类分析的农场环境异常检测方法。MapReduce框架下,Map阶段完成样本点到模型的分配;Reduce阶段对模型与类簇个数进行更新。通过实验验证了分布式Dirichlet聚类的性能,分析结果表明该方法可以应用于大量农场环境数据的异常检测。eQAag8879环亚手机|首页主页

关键词:Dirichlet过程混合模型;分布式聚类;农场环境数据;异常检测eQAag8879环亚手机|首页主页

中图分类号:TP338.8 ??????文献标识码:A?????? 文章编号:1004-731X (2017) 12-3035-07eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712014eQAag8879环亚手机|首页主页

Application of Distributed Clustering in Anomaly Detection of Farm Environment DataeQAag8879环亚手机|首页主页

Deng Li1,2, Pang Honglin1,2, Ling Wang1,2, Minrui Fei1,2eQAag8879环亚手机|首页主页

(1. School of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200072, China; 2. Shanghai Key Laboratory of Power Station Automation Technology, Shanghai 200072, China)eQAag8879环亚手机|首页主页

Abstract: The massive farm environment data stored in the distributed system should be dealt with so as to provide abnormal environment reference and make preventive strategies for crop yield. Considering the characteristics of the farm environment data, the Dirichlet Process Mixture Model (DPMM) clustering is implemented with the farm environment data on Hadoop and the anomaly detection method of the farm environment is proposed based on clustering analysis. Under the framework of MapReduce, Map stage implements the distribution of the sample points to the models; Reduce stage completes the update of models and the number of clusters. The performance has been verified by experiments. The results of clustering and the index of suitable environment for tomato are compared to implement the anomaly detection. The analysis results show that the method can be applied to anomaly detection of large number of farm environment data.eQAag8879环亚手机|首页主页

Keywords: DPMM; distributed clustering; farm environment data; anomaly detectioneQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

KPCA-ESN方法在Wi-Fi室内定位中的应用eQAag8879环亚手机|首页主页

李军,陈颖eQAag8879环亚手机|首页主页

(兰州交通大学自动化与电气工程学院,兰州 730070)eQAag8879环亚手机|首页主页

摘要:针对动态的室内环境及时变的接收信号强度(Received Signal StrengthRSS)值对定位精度的影响,提出一种基于核主成分分析(Kernel Principal Component AnalysisKPCA)和回声状态网络(Echo State NetworksESN)相结合的Wi-Fi室内定位方法KPCA方法对RSS指纹信息进行预处理,有效提取模型输入的非线性主元。利用ESN方法构建所提取出的定位特征与物理位置之间的非线性映射关系。将所提出的KPCA-ESN方法应用于仿真与物理环境的Wi-Fi室内定位实例中,在同等条件下,还与其他定位方法进行比较。结果表明,该方法定位精度较高,能够适应动态环境变化。eQAag8879环亚手机|首页主页

关键词:回声状态网络;核主成分分析;Wi-Fi;室内定位;接收信号强度eQAag8879环亚手机|首页主页

中图分类号:TP391.4 ????????文献标识码:A?????? 文章编号:1004-731X (2017) 12-3042-09eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712015eQAag8879环亚手机|首页主页

Application of KPCA-ESN Method in Wi-Fi Based Indoor PositioningeQAag8879环亚手机|首页主页

Li Jun, Chen YingeQAag8879环亚手机|首页主页

(College of Automation and Electrical Engineering, Lanzhou Jiao Tong University, Lanzhou 730070, China;)eQAag8879环亚手机|首页主页

Abstract: Aiming at the problem that the positioning accuracy is affected by the dynamic indoor environment and time-varying received signal strength (RSS) values, a Wi-Fi based indoor positioning method using kernel principal component Analysis (KPCA) and echo state networks (ESN) is proposed. The KPCA method is used to preprocess the RSS fingerprints effectively and extract the nonlinear principal components of the inputs of the model. On the basis of KPCA, the extracted principal components are taken as the inputs to the ESN network, the nonlinear mapping between corresponding positioning features and physical locations is then established by the ESN. The proposed KPCA-ESN method is then applied to Wi-Fi based indoor positioning instances by simulation and physical environment experiments. Compared with the other positioning methods under the same condition, experimental results confirm that the proposed method has higher positioning accuracy, and can also automatically?timely adapt to environmental dynamics.eQAag8879环亚手机|首页主页

Keywords: echo state networks; kernel principal component analysis; Wi-Fi; indoor positioning; received signal strengtheQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

预约机制下送箱集卡多集装箱码头调度问题eQAag8879环亚手机|首页主页

范厚明1,2,郭振峰1,杨宇1,2eQAag8879环亚手机|首页主页

1.大连海事大学交通运输管理学院,大连 1160262.大连海事大学战略管理与系统规划研究所,大连 116026eQAag8879环亚手机|首页主页

摘要:基于为缓解码头高峰时段集卡不规律到达导致的拥堵问题所建立的集卡预约机制,研究港外堆场的送箱集卡在多个集装箱码头间的调度问题。在满足码头出口船舶集港要求的同时,以降低外堆场运营成本为原则,将调用的集卡数量最少化为目标函数,建立集卡调度模型。设计改进的蚁群算法求解该模型,确定了每个时间段运抵不同码头的集装箱调度计划。并用算例分析验证了模型和算法的有效性。算例结果表明在合理的调度计划下,可以有效减少集卡资源的投入,提高堆场收益。eQAag8879环亚手机|首页主页

关键词:预约集港;集卡调度;集装箱码头;蚁群算法eQAag8879环亚手机|首页主页

中图分类号:U492.2+2???????? 文献标识码:A?????? 文章编号:1004-731X (2017) 12-3051-10eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712016eQAag8879环亚手机|首页主页

Truck Scheduling for Delivering Containers among Multiple Container Terminals Based on Truck Appointment SystemeQAag8879环亚手机|首页主页

Fan Houming1,2, Guo Zhenfeng1, Yang Yu1,2eQAag8879环亚手机|首页主页

(1.School of Transportation Management, Dalian Maritime University, Dalian 116026, China; eQAag8879环亚手机|首页主页
2. Institute of Strategy Management and System Planning, Dalian Maritime University, Dalian 116026, China)
eQAag8879环亚手机|首页主页

Abstract:Based on thetruck appointment system which is used for coping with the serious congestion in the port caused by trucks irregular arrival at peak time, the truck scheduling problem for delivering containers from outside yard to multiple container terminals is studied.Under the premise of meeting the requirements of container arrivals for export vessels, a truck scheduling model is built to reduce the outside yard’s operation cost with the objective of minimizing the quantity of the dispatched trucks. A modified ant colony algorithm is designed to solve the model, and the truck scheduling plan for delivering containers to different terminals in different time periods can be determined. Numerical experimentss how thattheproposedmodeland designed algorithmtake oneffectiveness. The study demonstrates that effectively decreasing the truck inputs and improving the benefits of yard are possible under the rational truck scheduling plan.eQAag8879环亚手机|首页主页

Keywords: truck appointment system; truck scheduling; container terminal; ant colony algorithmeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

无线电信号协同检测和压缩传感研究eQAag8879环亚手机|首页主页

杨晶晶1,冯云2,陈志钢2,唐皓2,黄铭1,3eQAag8879环亚手机|首页主页

1.云南大学信息学院,无线创新实验室, 昆明 6500912.云南省无线电监测中心,昆明 650228eQAag8879环亚手机|首页主页
3.
云南省高校谱传感与边疆无线电安全重点实验室,昆明 650091eQAag8879环亚手机|首页主页

摘要:通过无线电监测发现异常无线电发射是无线电管理中的一项重要工作。提出了适用于区域性无线电监测的多节点协同检测和压缩传感模型,并基于软件无线电平台建立多节点监测系统验证了协同检测方法的有效性。结果表明,基于接收信号本征值构造测量统计量,在合适的判决门限下可以获得较高的检测率;在系统中引入压缩传感极大地减少了从传感节点到汇聚节点的数据传输量。这对发展网格化无线电监测网络,实现无线电频谱的精细化管理具有重要意义。eQAag8879环亚手机|首页主页

关键词:频谱监测;干扰检测;协同检测;压缩传感;模拟eQAag8879环亚手机|首页主页

中图分类号:TN99????? ??文献标识码:A???? ????文章编号:1004-731X (2017) 12-3061-06eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712017eQAag8879环亚手机|首页主页

Compressed Cooperative Eigenvalue Spectrum Sensing for Radio SignaleQAag8879环亚手机|首页主页

Yang Jingjing1, Feng Yun2, Chen Zhigang2, Tang Hao2, Huang Ming1,3eQAag8879环亚手机|首页主页

(1. Wireless Innovation Lab, School of Information Science and Engineering, Yunnan University, Kunming 650091, China; 2. Radio Monitoring Center of Yunnan Province, Kunming 650228, China; 3. Key Laboratory of Spectrum Sensing and Borderland Radio Safety of University in Yunnan Province, Kunming 650091, China)eQAag8879环亚手机|首页主页

Abstract: Detecting the abnormal radio emission through radio monitoring is an ?important task of radio management. A regional cooperative compressed spectrum sensing model is proposed. A multi-node sensing system based on software defined radio platform is built, and the effectiveness of cooperative spectrum sensing is demonstrated. Results show that a high detection probability could be achieved at a suitable decision threshold based on the test statistics extracted from the eigenvalue of the received signal; what's more, compressed spectrum sensing employed to the detection system greatly reduced the size of the data transmitted from the sensing nodes to the fusing node. This work will be helpful for the development of large-scale grid radio monitoring network and the finer management of radio spectrum.eQAag8879环亚手机|首页主页

Keywords: radio monitoring; interference detection; cooperative sensing; compressed spectrum sensing; simulationeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

一种实现MEO/LEO网络快速收敛的动态路由协议eQAag8879环亚手机|首页主页

潘成胜,来维庚,石怀峰eQAag8879环亚手机|首页主页

(大连大学通信与网络重点实验室,大连 116622eQAag8879环亚手机|首页主页

摘要:针对卫星网络传输时延大、拓扑结构高动态特性所导致路由收敛慢的问题,提出一种实现MEO/LEO双层卫星网络路由快速收敛的动态路由协议,该协议在将虚拟拓扑路由策略和链路状态路由协议相结合的基础上,引入网络分簇思想,在卫星网络路由收敛过程中,将整个网络分簇管理,并提出适用于MEO/LEO双层卫星网络的覆盖式分簇算法,缩小了链路状态通告LSA(Link-state advertisement)的扩散范围,从而减少LSA的扩散开销及排队时延。同时,在路由表更新阶段,提出一种基于故障类型判断的定时器调度算法,有效减少了路由表更新时延,实现卫星网络的快速收敛。eQAag8879环亚手机|首页主页

关键词:卫星网络;路由收敛;离线路由;链路状态路由协议;网络分簇eQAag8879环亚手机|首页主页

中图分类号:TP393.02????? 文献标识码:A??? ???文章编号:1004-731X (2017) 12-3067-08eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712018eQAag8879环亚手机|首页主页

A Dynamic Routing Protocol which can Achieve Fast Convergence of MEO/LEO NetworkeQAag8879环亚手机|首页主页

Pan Chengsheng, Lai Weigeng, Shi HuaifengeQAag8879环亚手机|首页主页

(Key Laboratory of Communication and Network, Dalian University, Dalian 116622, China)eQAag8879环亚手机|首页主页

Abstract: In view of the routing convergence slow problem caused by the large delay and the topological structure high dynamic performance of the satellite network, a dynamic routing protocol which can achieve fast convergence of MEO/LEO double-layer satellite network routing is put forward. The protocol based on the combination of Virtual Topology Routing Strategy and link state routing protocol introduces the idea of network clustering. In the process of satellite network routing convergence, the whole network is divided into cluster management, and a covering clustering algorithm for MEO/LEO double layered satellite networks is proposed, which reduces the spread range of the link state notification LSA(Link-state advertisement), thus the LSA's diffusion overhead and the queuing delay are reduced. In the process of routing table update, a timer scheduling algorithm based on fault type judgment is proposed, which can reduce the time delay of routing table so as to realize the fast convergence of satellite networks.eQAag8879环亚手机|首页主页

Keywords: satellite network; routing convergence; offline routing; link state routing protocol; network clusteringeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

增压柴油机EGR性能评估研究与实现eQAag8879环亚手机|首页主页

祖象欢1,王银燕1,杨传雷1,杜剑维2,王佳伦3eQAag8879环亚手机|首页主页

1.哈尔滨工程大学动力与能源工程学院,哈尔滨 1500012.中国舰船研究所,北京 1001923.重庆潍柴发动机厂,重庆 402262eQAag8879环亚手机|首页主页

摘要:为了解决增压柴油机不同工况不同EGR率下燃烧与排放优化问题,通过试验获取不同EGR率下柴油机的运行参数,选取燃油消耗率、NOX、碳烟和缸内最高燃烧压力等指标为决策目标,建立了基于多目标灰色决策的增压柴油机EGR性能评估模型,进而决策出最优EGR方案。利用MATLAB设计了EGR性能评估仿真平台,简化了建模过程,提高了仿真计算效率通过仿真实例表明了仿真模型及平台的有效性和实用性,对EGR性能的优化具有一定的参考价值。eQAag8879环亚手机|首页主页

关键词:柴油机;废气再循环;多目标决策;性能评估eQAag8879环亚手机|首页主页

中图分类号:TK427????? 文献标识码:A??? ???文章编号:1004-731X (2017) 12-3075-07eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712019eQAag8879环亚手机|首页主页

Research and Implementation of EGR performance Evaluation for Turbocharged Diesel EngineeQAag8879环亚手机|首页主页

Zu Xianghuan1, Wang Yinyan1, Yang Chuanlei1, Du Jianwei2, Wang Jialun3eQAag8879环亚手机|首页主页

(1.Harbin Engineering University, College of Power and Energy Engineering, Harbin 150001, China;eQAag8879环亚手机|首页主页
2.China Ship Research and Development Academy, Beijing 100192, China; 3.Chongqing Weichai Engine Factory, Chongqing 402262, China)
eQAag8879环亚手机|首页主页

Abstract: To solve the optimization of turbocharged diesel engine combustion and emissions performance for different EGR rate under different working conditions, the operation parameters of the diesel engine under different EGR rate was obtained ?through experiment at first; then the specific fuel consumption, NOx, soot and cylinder pressure were selected as decision targets and the evaluation model for turbocharged diesel engine performance under different EGR rate was established based on multi-objective grey decision, finally optimum EGR scheme was achieved. A simulation platform for EGR performance evaluation was designed by MATLAB which simplifies the modeling process and improves the efficiency of simulation calculation. The effectiveness and practicability of the simulation model and platform are verified by an example and the study is valuable as reference for optimizing the EGR performance.eQAag8879环亚手机|首页主页

Keywords: diesel engine; exhaust gas recirculation; multi-objective decision; performance evaluationeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

分布式电力应急救援感知与协同信息交互技术eQAag8879环亚手机|首页主页

谢小军1,芦翰晨2*,施若馨2eQAag8879环亚手机|首页主页

(1. 国网安徽省电力公司信息通信分公司,安徽 合肥 2300612. 北京航空航天大学自动化科学与电气工程学院,北京 100191)eQAag8879环亚手机|首页主页

摘要:从定位、通信、任务下发的实施过程研究了现代应急救援技术的系统结构、组成和功能,并对信息处理及多链路消息两个关键子系统进行了研究,提出了基于多链路通信的应急指挥系统协同交互方法和技术方案。为提高多点分布式应急救援中应急指挥中心与应急救援车辆在受限通信网络下的通信能力,重点研究针对指挥中心和车辆端协同的系统框架,解决了消息通讯及车辆监控数据协同感知与同步传输问题。设计实现的系统在北京及合肥的实地测试,验证提出技术方案和算法的有效性,为应急条件下救援指挥监控提供了可行的解决途径。eQAag8879环亚手机|首页主页

关键词:应急指挥;卡尔曼滤波;时间同步;多链路通讯eQAag8879环亚手机|首页主页

中图分类号:TP391.1?????? 文献标识码:A?????? 文章编号:1004-731X (2017)12-3082-10eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712020eQAag8879环亚手机|首页主页

Distributed Power Emergency Rescue Perception and Cooperative Information Interaction TechnologyeQAag8879环亚手机|首页主页

Xie Xiaojun1, Lu Hanchen2*, Shi Ruoxin2eQAag8879环亚手机|首页主页

(1. Information and Telecommunication Branch, State Grid Anhui Electric Power Company, Hefei 230061, China; 2. School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China)eQAag8879环亚手机|首页主页

Abstract: An emergency rescue technology for modern vehicle was proposed based on the implementation process of positioning, communication and task. The key subsystems of information processing and multi-link message in the rescue system were developed. The cooperative interaction method and technical scheme of emergency command system were based on multi-link communication. To improve the communication effectiveness between the emergency command center and emergency rescue vehicles under harsh conditions, the problems of short message communication and vehicle data transmission were solved by establishing a framework for directing side and the vehicle side. Design and implementation of the system through the field test in Beijing and Hefei verified the effectiveness of the technical scheme and algorithm, provided a feasible solution for emergency rescue command and control.eQAag8879环亚手机|首页主页

Keywords: emergency command; Kalman filtering; time synchronization; multilink communicationeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

基于Hopf振荡器的四足机器人步态CPG调节eQAag8879环亚手机|首页主页

徐海东,干苏,任杰,王斌锐*,金英连eQAag8879环亚手机|首页主页

(中国计量大学机电工程学院,浙江 杭州 310000eQAag8879环亚手机|首页主页

摘要:中枢模式发生器(CPG)对于哺乳动物的节律运动有着重要作用。依据猎狗的步态特征和肢体运动关系,针对四足机器人的结构特点,以Hopf振荡器模型为核心,使用旋转矩阵连接四个振荡器,建立全对称的CPG网络模型。CPG网络输出信号通过映射函数变换作为机器人虚拟样机关节转角的控制信号。通过调节CPG网络中占空比等参数,改变旋转矩阵的值,可以实现在walktrot两种典型步态间的快速平滑转换。通过MATLABADAMS联合仿真实验,验证了调节CPG模型参数实现四足机器人的步态转换的有效性。eQAag8879环亚手机|首页主页

关键词:四足机器人;Hopf振荡器模型;节律信号;旋转矩阵;步态转换eQAag8879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 (2017) 12-3092-08eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712021eQAag8879环亚手机|首页主页

Gait CPG Adjustment for a Quadruped Robot Based on Hopf OscillatoreQAag8879环亚手机|首页主页

Xu Haidong, Gan Su, Ren Jie, Wang Binrui*, Jin YinglianeQAag8879环亚手机|首页主页

(School of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310000, China)eQAag8879环亚手机|首页主页

Abstract: CPG (central pattern generator) plays an important role for rhythm motion of the mammals. According to gait characteristics and kinematic relationship of hound, a full symmetric CPG network was built by considering the structure features of quadruped robot. Hopf oscillators model were chosen as core neuron models of CPG network, and the rotation matrix was used to connect four oscillators. After transformation by mapping function, output signals of CPG network were used to control joint angle of the virtual prototype robot. Quick and smooth transition between walk gait and trot gait were achieved by adjusting the parameters of CPG network such as duty ratio and changing the rotation matrix. The performance and effectiveness of adjusting the parameters in CPG network to realize gait transition were verified by coordinated simulation between MATLAB and ADAMS.eQAag8879环亚手机|首页主页

Keywords: quadruped robot; Hopf oscillator model; rhythmic signal; rotation matrix; gait transitioneQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

基于检测概率的雷达组网反隐身建模与仿真eQAag8879环亚手机|首页主页

陈彬,童创明,李西敏eQAag8879环亚手机|首页主页

(空军工程大学,西安 710051)eQAag8879环亚手机|首页主页

摘要:针对隐身飞机突防对抗雷达网的应用背景,以雷达网检测概率为评价指标,建立了应用于雷达网反隐身飞机的探测效果评估模型。首先基于典型隐身飞机雷达散射截面(RCS)起伏数据,分析了其与虚警概率、发现概率和信噪比等参数间的关系。并应用秩K融合算法,计算了雷达网的综合检测概率,提出了评估反隐身性能的方法。然后采用物理光学和等效电磁流法,分析了典型隐身目标的雷达散射截面积。并结合区域剖分方法,解算了等边三角形、正方形布站方式下雷达网对隐身目标的综合检测概率,从而甄选最优雷达布站方式和基线距离。理论分析与仿真结果验证了优化雷达网布站的应用性和可行性。eQAag8879环亚手机|首页主页

关键词:隐身目标;检测概率;雷达网;效能评估eQAag8879环亚手机|首页主页

中图分类号:TN953????? ??文献标识码:A?????? 文章编号:1004-731X (2017) 12-3100-07eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712022eQAag8879环亚手机|首页主页

Modeling and Simulation of Radar Networking Anti-stealth Based on the Detection ProbabilityeQAag8879环亚手机|首页主页

Chen Bin, Tong Chuangming, Li XimineQAag8879环亚手机|首页主页

(Air Force Engineering University, Xi’an 710051, China.)eQAag8879环亚手机|首页主页

Abstract: For the scene of stealth target penetration against radar network, an evaluation model of detection effectiveness is established by taking the detection probability of the netted radar as an evaluation index. Based on the target’s Radar Cross Section (RCS) data, the relationships among the false alarm probability, detection probability and signal to noise ratio are analyzed. A method using signal detection probability of the radar network is proposed with the Rank “K” principle of the fusion center. The RCS of stealth target is analyzed utilizing physical optics and method of equivalent currents. The detection probability of radar network under equilateral triangle and square position is resolved respectively combined with the divided region. The optimal configuration and baseline distance are selected. Theoretical analysis and simulation results prove the applicability and feasibility of proposed configuration.eQAag8879环亚手机|首页主页

Keywords: stealth target; detection probability; radar network; effectiveness’ evaluationeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

雷电对计算机内部电磁环境影响的模拟研究eQAag8879环亚手机|首页主页

杜改红,田杨萌,王彩霞,王宏伟eQAag8879环亚手机|首页主页

(北京信息科技大学理学院,北京 100192)eQAag8879环亚手机|首页主页

摘要:XFDTD软件模拟计算了雷电电场强度为50 kV,上升沿约为50 ns,脉宽为2 000 ns的强雷电电磁脉冲与台式计算机耦合后,机箱内几个典型位置处的耦合电场随时间变化的曲线和能量密度随时间变化的曲线;分析了计算机内部不同位置处的屏蔽效能。耦合产生的能量密度的峰值和对计算机系统造成损害的电磁脉冲功率密度的阈值相对比,得出机箱内耦合产生的能量不能影响计算机的正常工作,但在孔洞处耦合产生的能量很大,仿真结果为计算机的雷电电磁兼容设计提供了参考依据。eQAag8879环亚手机|首页主页

关键词:计算机;耦合;雷电电磁场;能量密度曲线eQAag8879环亚手机|首页主页

中图分类号:TM937 ??????文献标识码:A?????? 文章编号:1004-731X (2017) 12-3107-07eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712023eQAag8879环亚手机|首页主页

Simulation of Influence of Lightning on Internal Electromagnetic Environment of ComputereQAag8879环亚手机|首页主页

Du Gaihong, Tian Yangmeng, Wang Caixia, Wang HongweieQAag8879环亚手机|首页主页

(School of Applied Science of Beijing Information Science and Technology University, Beijing 100192,China.)eQAag8879环亚手机|首页主页

Abstract: Through XFDTD software simulating strong lightning electromagnetic pulse of 50KV lightning electric field strength, rising edge about 50ns, and pulse width about 2000ns coupled with a desktop computer, the curves of the coupled electric field with time and the curves of the energy density with time at several typical locations in the chassis are obtained; the shielding effectiveness of different locations inside the computer is analyzed. Simulation results suggest that the electromagnetic field strength produced in the chassis has no damage to the computer node while coupling energy generated in the hole is large in comparison with the threshold electromagnetic pulse power density, which provides a reference for EMC design of portable computer.eQAag8879环亚手机|首页主页

Keywords: computer; coupling; lightning electromagnetic field; energy density curveeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

大规模MIMO系统中的混合RZF预编码算法研究eQAag8879环亚手机|首页主页

谢斌,谢舒闽,刘述睿eQAag8879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)eQAag8879环亚手机|首页主页

摘要:针对多用户大规模MIMO系统采用传统全数字预编码时系统复杂度和实现成本较高的问题,提出了一种模拟和数字相结合的混合RZF预编码。在充分考虑信道噪声、用户间干扰和系统结构的基础上,结合MRTRZF预编码对模拟部分的预编码矩阵进行分段设计,数字部分则根据生成的优化信道矩阵,采用低维RZF预编码进行处理。通过这种优化设计,大幅度减少了系统所需射频链路的数量,并且降低了数字基带处理部分的维度。仿真结果表明,在有效地降低了系统复杂度和实现成本的基础上,文中所提混合RZF预编码的频谱效率非常接近传统全数字RZF预编码。eQAag8879环亚手机|首页主页

关键词:大规模MIMO;混合预编码;RZF预编码;射频链路;频谱效率eQAag8879环亚手机|首页主页

中图分类号:TN929.5???? ??文献标识码:A?????? 文章编号:1004-731X (2017) 12-3114-09eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712024eQAag8879环亚手机|首页主页

Hybrid RZF Precoding Algorithm for Massive MIMO SystemeQAag8879环亚手机|首页主页

Xie Bin, Xie Shumin, Liu ShuruieQAag8879环亚手机|首页主页

(School of Information Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China)eQAag8879环亚手机|首页主页

Abstract: In view of the high system complexity and high cost of the multi-user Massive MIMO system based on the traditional full digital precoding, a hybrid analog and digital RZF precoding is proposed. Based on the consideration of the channel noise, the inter-user interference and the system structure, the analog precoding matrix is sectionally designed with the combination of MRT precoding and RZF precoding, and for the digital part, a low dimension RZF precoding is used on the basis of the optimized channel matrix. After the optimization design, both the number of RF chain and the dimension of the digital baseband processing are reduced. According to the simulation results, based on the reduction of system complexity and implementation cost, the spectrum efficiency of the proposed hybrid RZF precoding algorithm is very close to that of the traditional full digital RZF precoding.eQAag8879环亚手机|首页主页

Keywords: massive MIMO; hybrid precoding; RZF precoding; RF chain; spectrum efficiencyeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

一种求解多维多选择背包问题的分布估计算法eQAag8879环亚手机|首页主页

谭阳1,2,刘章2,周虹2eQAag8879环亚手机|首页主页

(1. 湖南师范大学计算机科学学院长沙 4100812. 湖南广播电视大学长沙 410004)eQAag8879环亚手机|首页主页

摘要:针对多维多选择背包问题(MMKP)局部难以优化的特点,提出将分布估计算法(EDA)应用于优化MMKP问题。为了提升EDA优化局部的能力以构建待选物品价值权重因子的方式来改进EDA的初始模型和概率模型更新方法;并平衡了极值效应对算法寻优过程的影响,克服了传统EDA局部优化能力不强的缺陷.同时采用新的非可行解的修复机制,维护了机器学习法对概率模型的促进作用,提高了改进算法的全局优化能力。实验结果表明,该算法能够有效地优化MMKP问题,其性能高于传统的优化算法eQAag8879环亚手机|首页主页

关键词:启发式;多维多选择背包;价值权重;分布估计;优化eQAag8879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 (2017) 12-3123-09eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712025eQAag8879环亚手机|首页主页

Distributed Estimation Algorithm for Multi-dimensional Multi-choice Knapsack ProblemeQAag8879环亚手机|首页主页

Tan Yang1,2, Liu Zhang2, Zhou Hong2eQAag8879环亚手机|首页主页

(1. College of Computer Science, Human Normal University, Changsha 410081, China; 2. Human Radio and Television University, Changsha 410004, China.)eQAag8879环亚手机|首页主页

Abstract: As it is difficult to realize local optimization of the Multidimensional Multiple-choice Knapsack Problem (MMKP), the Estimation of Distribution Algorithms (EDA) is applied to optimize the MMKP. In order to improve the local optimization ability of EDA, value weight factors of items for selection are built to improve the EDA initial model and probabilistic model updating methods. The impact of the extreme effects on the algorithm optimization process is balanced to overcome the defect that the local optimization ability of the traditional EDA is weak. A new non-feasible solution repair mechanism is adopted to maintain the facilitation of machine learning methods for the probabilistic model and improve the global optimization ability of the improved algorithm. Experimental results show that this algorithm can effectively optimize the MMKP and its performance is much better than traditional optimization algorithms.eQAag8879环亚手机|首页主页

Keywords: heuristics; multidimensional multiple-choice knapsack; value weight; estimation of distribution; optimalityeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

感应电机变结构PID速度控制及转子电阻辨识eQAag8879环亚手机|首页主页

吕小意,王艳,纪志成,严大虎eQAag8879环亚手机|首页主页

(江南大学 物联网技术应用教育部工程研究中心,无锡 214122)eQAag8879环亚手机|首页主页

摘要:为了提高感应电机矢量控制系统的性能,提出了一种变结构PID速度控制与基于模型参考自适应(MRAS)转子电阻在线辨识相结合的控制方法基于瞬时无功功率的模型参考自适应系统中,通过自适应调节来辨识转子电阻。由于传统PID速度调节器存在参数不能在线改变和积分饱和现象,因此在传统PID控制器基础上融合anti-windup技术和模糊理论,设计了变结构PID速度控制器。MATLAB仿真实验可以看出,该控制器缓解了系统的积分饱和现象,减小了速度超调;同时表明了在变结构PID速度控制下基于MRAS转子电阻辨识的有效性eQAag8879环亚手机|首页主页

关键词:感应电机;转子电阻;变结构PIDanti-windup技术;模糊理论eQAag8879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 (2017) 12-3132-07eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712026eQAag8879环亚手机|首页主页

Variable Structure PID Speed Control and Rotor Resistance Identification of Induction MotoreQAag8879环亚手机|首页主页

Lü Xiaoyi, Wang Yan, Ji Zhicheng, Yan DahueQAag8879环亚手机|首页主页

(Engineering Research Center of Internet of Things Technology Applications Ministry of Education, Jiangnan University, Wuxi 214122, China)eQAag8879环亚手机|首页主页

Abstract: With the aim of improving the performance of the vector controlled induction motor system, a novel control method which combines variable structure PID speed control with online identification of rotor resistance based on model reference adaptive system (MRAS) is proposed. The rotor resistance is identified by self-adaptive adjustment in the model reference adaptive system based on the instantaneous reactive power. Given that the parameters can not change on line and the integral saturation phenomenon often exists in traditional PID speed regulator, a variable structure PID speed controller is designed by integrating anti-windup technology with fuzzy theory based on traditional PID controller. It can be seen from the MATLAB simulation experiment that the proposed controller can reduce the integral windup phenomenon of the system and minish speed overshoot. The effectiveness of rotor resistance identification based MRAS is proved in variable structure PID speed control.eQAag8879环亚手机|首页主页

Keywords: induction motor; rotor resistance; variable structure PID; anti-windup technology; fuzzy theoryeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

改进滑模观测器的永磁同步电机无传感器控制eQAag8879环亚手机|首页主页

李杰,王艳,纪志成,严大虎eQAag8879环亚手机|首页主页

(江南大学教育部物联网技术应用工程中心,江苏 无锡 214122)eQAag8879环亚手机|首页主页

摘要:为提高永磁同步电机无传感器控制系统性能,提出一种基于定子电阻在线辨识的改进滑模观测器。该观测器首先通过引入分段式双曲正切函数作为切换函数和可变滑模增益来减弱高频抖振。其次,基于李雅普诺夫稳定性理论进行定子电阻在线辨识来提高观测器估算精度。同时采用分数阶锁相环从观测的反电势中估算出转子位置和速度信息,从而有效避免了因传统相位补偿带来的计算复杂性。最后,通过仿真实验表明,改进滑模观测器有效抑制了系统抖振,能够准确估算出电机转速和位置信息。eQAag8879环亚手机|首页主页

关键词:滑模观测器;分段式双曲正切函数;可变滑模增益;分数阶锁相环eQAag8879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 (2017) 12-3139-10eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712027eQAag8879环亚手机|首页主页

Sensorless Control of Permanent Magnet Synchronous Motor with Improved Sliding Mode ObservereQAag8879环亚手机|首页主页

Li Jie, Wang Yan, Ji Zhicheng, Yan DahueQAag8879环亚手机|首页主页

(Engineering Research Center of Internet of Things Technology Applications Ministry of Education,Jiangnan University, Wuxi 214122, China)eQAag8879环亚手机|首页主页

Abstract: With the purpose of improving the performance of sensorless control system of permanent magnet synchronous motor (PMSM), an improved sliding mode observer based on stator resistance online identification is proposed. These ctional hyperbolic tangent function is adopted as switching function, combined with variable sliding mode gain to weaken the high frequency chattering. Through the use of Lyapunov stability theory, the stator resistance online identification is adapted for improving the estimation accuracy of observer. Fractional order phase-locked loop is employed to estimate the rotor position and speed information from observed back EMF so that computing complexity caused by traditional phase compensation can be effectively avoided. The experimental simulation results indicate that the improved sliding mode observer can effectively inhibit the system chattering as well as accurately estimate the information of motor speed and rotor position.eQAag8879环亚手机|首页主页

Keywords: sliding mode observer; variable sliding mode gain; sectional hyperbolic tangent function; fractional order phase-locked loopeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

新型复式皮囊蓄能器热力学系统分析eQAag8879环亚手机|首页主页

赵卫1,叶骞2eQAag8879环亚手机|首页主页

(1.福建工程学院,福州 3501082.上海交通大学,上海 200240)eQAag8879环亚手机|首页主页

摘要:为提高皮囊蓄能器的能量效率,介绍了新型复式蓄能器的物理模型,建立了复式蓄能器热力学系统动态方程组。基于Matlab仿真所得系统温度和压力变化情况,推导出复式皮囊蓄能器广义Maxwell力学模型,提出复式蓄能器热弹簧概念。基于新型力学模型的仿真表明,新型复式蓄能器比旧式皮囊蓄能器有更高的工作效率和更低的耗损率。对广义Maxwell力学模型热弹簧概念和蓄能器工况参数的综合分析,为进一步改进和应用蓄能器提供新方法。eQAag8879环亚手机|首页主页

关键词:复式皮囊蓄能器;广义Maxwell力学模型;热弹簧;效率分析eQAag8879环亚手机|首页主页

中图分类号:TH138???? ?????文献标识码:A?????? 文章编号:1004-731X (2017) 12-3149-11eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712028eQAag8879环亚手机|首页主页

Thermodynamic System Analysis of a New Double-Bladder AccumulatoreQAag8879环亚手机|首页主页

Zhao Wei1, Ye Qian2eQAag8879环亚手机|首页主页

(1.Fujian University of Technology, Fuzhou 350108, China; 2.Shanghai Jiao Tong University, Shanghai 200240, China)eQAag8879环亚手机|首页主页

Abstract: A new double-bladder accumulator is introduced to improve the efficiency of bladder accumulator, and the dynamic equations for the new type accumulator are established. Based on the simulation results of temperature and pressure, the generalized Maxwell model of double-bladder accumulator is deduced, and the concept of thermodynamics spring is put forward. On account of simulation results, it shows that the new double-bladder accumulator has better operational efficiency and losses coefficient than that of the old type. The internal relations among the generalized Maxwell model, thermodynamics spring and operating parameters are analyzed with the purposes of upgrading design and proper use of the new double-bladder accumulator.eQAag8879环亚手机|首页主页

Keywords: new double-bladder accumulator; generalized Maxwell model; thermodynamics spring; efficiency analysiseQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

SRM直接瞬时转矩系统抗饱和控制器设计eQAag8879环亚手机|首页主页

秦晓飞,刘杰,李峰eQAag8879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,上海 200093)eQAag8879环亚手机|首页主页

摘要:在开关磁阻电机直接瞬时转矩控制系统速度外环控制器中存在非线性饱和,控制器的积分控制环节会对误差进行积累并逐渐使误差增大,造成控制器的饱和效应,降低系统的性能,为此在传统速度控制器基础之上提出一种抗饱和自适应PID控制器,该方法通过对控制器输入饱和误差进行积分,并通过自适应系数调整控制器的积分项,保证系统出现饱和超调时,使其快速退饱和,仿真及试验表明该方法可以抑制饱和现象,提高电机速度响应,降低转速脉动,系统稳定性和鲁棒性较好。eQAag8879环亚手机|首页主页

关键词:开关磁阻电机;直接瞬时转矩;抗饱和;PID控制器eQAag8879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(2017)12-3160-08eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712029eQAag8879环亚手机|首页主页

Design of Anti -windup Controller for SRMDirect Instantaneous Torque SystemeQAag8879环亚手机|首页主页

Qin Xiaofei, Liu Jie, Li FengeQAag8879环亚手机|首页主页

(School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)eQAag8879环亚手机|首页主页

Abstract: In the direct instantaneous torque control system of switched reluctance motor, there is a nonlinear saturation in the speed outer loop controller. The integral control link of the controller will accumulate the error and increase the error gradually, resulting in the saturation effect of the controller and ?reducing the performance of the system. In this regard, an anti- windup adaptive PID controller is proposed on the basis of the traditional speed controller. This method integrates the input saturation error of controller and adjusts the integral term of controller by adaptive coefficient, so that it can quickly desaturation when the system has saturation overshoot. The simulation and test show that this method can suppress the saturation phenomenon, improve the motor response speed, reduce the ripple of speed, and achieve better system stability and robustness.eQAag8879环亚手机|首页主页

Keywords: switched reluctance motor; direct instantaneous torque; anti-windup; PID controllereQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

相空间重构文献综述可视化分析eQAag8879环亚手机|首页主页

孟力,毕叶平eQAag8879环亚手机|首页主页

(厦门大学管理学院,福建 厦门 361005eQAag8879环亚手机|首页主页

摘要:为探究相空间重构理论至今为止的发展历程及前景,特以CiteSpace可视化引文分析软件为工具,通过文献计量学研究方法,对来自于Web of Science平台的与“phase space reconstruction”相关1 500篇文献按时间分布、空间分布、引文及作者分布的情况进行了汇总整理,并以图、表的形式展现。根据关键词和共现图及关键词时区图,重点考察了相空间重构理论的研究热点及趋势。研究表明,该理论的发文量逐年增加且势头强劲;在工程、技术领域的应用越发广泛;与多种算法相结合,可提高非线性系统的分析与预测精度eQAag8879环亚手机|首页主页

关键词:相空间重构;可视化分析;研究热点;研究趋势eQAag8879环亚手机|首页主页

中图分类号:F830.9???? ?????文献标识码:A?????? 文章编号:1004-731X (2017) 12-3167-09eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712030eQAag8879环亚手机|首页主页

Visual Analysis of Literature Review of Phase Space ReconstructioneQAag8879环亚手机|首页主页

Meng Li, Bi YepingeQAag8879环亚手机|首页主页

(School of Management of Xiamen University, Xiamen 361005, China)eQAag8879环亚手机|首页主页

Abstract: The primary object of the paper is to reveal the development process and prospect of phase space reconstruction theory. The technique applied is referred as CiteSpace Ⅲ, a visualized analysis software for citation. The research method of literature metrology was used to classify the fifteen hundred papers from the Web of Science platform related with “phase space reconstruction” into different priorities according to time distribution, spatial distribution, citation and author distribution. All results were displayed in figures and tables. The hot spot and trend of phase space reconstruction were discussed based on the keywords co-occurrence graph and keywords time zone map. The study showed that the amount of the publications on the theory increased year by year harply, and it has been applied more widely in the field of engineering and technology. Combined with a variety of algorithms, the accuracy of the analysis and prediction of nonlinear systems can be improved.eQAag8879环亚手机|首页主页

Keywords: phase space reconstruction; visualization analysis; hot spot; research trendeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

一种基于忆阻器的忆容器模型eQAag8879环亚手机|首页主页

甘朝晖1,吴宇鑫1,蒋2,张士英1eQAag8879环亚手机|首页主页

1.武汉科技大学信息科学与工程学院,湖北 武汉 4300812.武汉科技大学计算机科学与技术学院,湖北 武汉 430065eQAag8879环亚手机|首页主页

摘要:惠普实验室在发现忆阻器实物以后,研究人员根据电路理论提出了忆容器的概念。但是,直到目前,忆容器的实物还没有被发现。为了研究忆容器,科研人员往往用其它的元件及电路来模拟忆容器。在详细分析了现有的忆容器模型以后,研究了忆阻器与忆容器之间的变换关系,提出了一种新的非线性转换方法以实现忆阻器到忆容器的变换,并在此基础上构造了一种基于忆阻器的非线性忆容器模型。经过Pspice仿真实验发现,该模型成功地模拟了忆容器的基本特性,该模型对忆容器及其相关电路的发展及应用是非常有意义的eQAag8879环亚手机|首页主页

关键词:忆阻器;忆容器;非线性;模型eQAag8879环亚手机|首页主页

中图分类号:TN710? ??????文献标识码:A?????? 文章编号:1004-731X (2017) 12-3176-09eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712031eQAag8879环亚手机|首页主页

Memcapacitor Model Based On MemristoreQAag8879环亚手机|首页主页

Gan Zhaohui1, Wu Yuxin1, Jiang Min2, Zhang Shiying1eQAag8879环亚手机|首页主页

(1.School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; 2.School of Computer Science and Technology, Wuhan University of Science and Technology, Wuhan 430065, China)eQAag8879环亚手机|首页主页

Abstract: After physical model discovery of memristor in HP lab, the researchers put forward the concept of memcapacitor according to circuit theory. However, the physical object of the memcapacitor has not been found so far. In order to research the memcapacitor, researchers often use other components and circuits to simulate a memcapacitor. After analyzing the existing model of memcapacitor, a new nonlinear transformation method is proposed to transform a memristor into a memcapacitor, by which a nonlinear model of memcapacitor based on the memristor is constructed. The Pspice simulation experiments showed that the model successfully simulated the basic characteristics of the memcapacitor, and the model is very meaningful for the development and application of the memcapacitor and its related circuits.eQAag8879环亚手机|首页主页

Keywords: memristor; memcapacitor; nonlinear; modeleQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

基于多Agent的装备保障体系分布式建模与仿真方法eQAag8879环亚手机|首页主页

尹丽丽,寇力,范文慧eQAag8879环亚手机|首页主页

(清华大学自动化系,北京 100084)eQAag8879环亚手机|首页主页

摘要:装备保障体系的重要性与日俱增,针对其规模大、复杂度高的特点,采用分布式建模与仿真技术对装备保障体系进行研究具有重大的现实意义。提出了基于多Agent的装备保障体系的仿真建模方法,设计了Agent的种类、各类Agent的功能以及之间的交互关系;给出了基于多Agent分布式建模与仿真的体系结构,基于JADE开源平台设计并实现了基于多Agent的装备保障体系分布式仿真软件原型系统,整个多Agent系统能够协调完成各类保障任务,较好地实现了对装备保障体系的分布式建模与仿真,并通过实例验证了原型系统的正确性和可用性。eQAag8879环亚手机|首页主页

关键词:装备保障;体系;多Agent;建模与仿真eQAag8879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 (2017) 12-3185-10eQAag8879环亚手机|首页主页

DOI: 10.16182/j.issn1004731x.joss.201712032eQAag8879环亚手机|首页主页

Distributed Modeling and Simulation Method of Equipment Support System Based on Multi AgenteQAag8879环亚手机|首页主页

Yin Lili, Kou Li, Fan WenhuieQAag8879环亚手机|首页主页

(Department of Automation in Tsinghua University, Beijing 100084, China)eQAag8879环亚手机|首页主页

Abstract: The role of equipment support system becomes more and more important. In view of its large scale and high complexity, it is of great practical significance to study the equipment support system by using distributed modeling and simulation technology. A simulation modeling method of equipment support system based on multi-Agent technology is proposed. The type and function of Agent in the system is designed, and the interaction between them is described. The system architecture based on multi-Agent distributed modeling and simulation is presented. Distributed prototype system of equipment support system based on multi-Agent is designed and implemented by open-source JADE. The multi-Agent system can execute various types of support tasks and successfully realize the distributed modeling and simulation of the equipment support system. The correctness and usability of the prototype system is verified by an example.eQAag8879环亚手机|首页主页

Keywords: equipment support system; system of system; multi-Agent; modeling and simulationeQAag8879环亚手机|首页主页

※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※eQAag8879环亚手机|首页主页

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