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2018年第2期

时间:2018-03-26 11:11:49??来源:??作者:

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面向型人工智能系统的建模与仿真技术初步研究
李伯虎1,2,柴旭东3,张霖2,李潭3,卿杜政4,林廷宇1,5,刘阳3
(1.北京电子工程总体研究所复杂产品智能制造技术国家重点实验室,北京100854; 2.北京航空航天大学复杂产品先进制造系统教育部工程研究中国心,北京 100191; 3. 航天云网科技发展有限责任公司,北京 100039; 4. 北京仿真中心航天系统仿真重点实验室,北京 100854; 5. 北京仿真中心北京市复杂产品先进制造系统工程技术研究中心,北京 100854)
摘要:简要解读了正在飞速发展中的新互联网+大数据+人工智能+”时代,阐释了新型人工智能系统的内涵和体系架构。提出面向新型人工智能系统的建模与仿真技术的含义,探讨了新型人工智能系统仿真对建模与仿真技术的新挑战。提出面向新型人工智能系统的建模与仿真技术的研究内容与给出作者团队的初步研究成果,包括面向新型人工智能系统的建模理论与方法;智能仿真计算机、智慧云仿真及智能仿真硬/软件等智能仿真支撑系统技术,及智能仿真系统应用工程技术,简要介绍了基于智能仿真的几类人工智能应用系统范例(如智能制造、智能医疗、智慧城市、智能农业等)。提出发展面向新型人工智能系统的建模与仿真技术的建议。
关键词:建模仿真;人工智能系统;智慧云仿真;智能仿真计算机
中图分类号:TP391.9?????? 文献标识码:B ????????文章编号:1004-731X (2018) 02-0349-14
DOI: 10.16182/j.issn1004731x.joss.201802001
Preliminary Study of Modeling and Simulation Technology Oriented to Neo-type Artificial Intelligent Systems
LiBo Hu1,2, ChaiXudong3, ZhangLin2, LiTan3, QingDuzheng4, LinTingyu1,5, LiuYang3
(1. State Key Laboratory of Intelligent Manufacturing System Technology, Beijing Institute of Electronic System Engineering, Beijing 100854, China; 2. Beihang University, Engineering Research Center of?Complex Product Advanced Manufacturing Systems, Ministry of Education, Beijing 100191, China; 3.CASICloud Co. Ltd. Beijing 100039, China; 4.Science and Technology on Space System Simulation Laboratory, Beijing Simulation Center, Beijing 100854, China; 5. Beijing Complex Product Advanced Manufacturing Engineering Research Center, Beijing Simulation Center, Beijing 100854, China)
Abstract: A brief interpretation of the rapidly developing “New Internet+ Big Data+ Artificial Intelligence+” era is given in the paperand the essence and the architectureof neo-type artificial intelligence systems are explained. The meaning of neo-type artificial intelligence system oriented modelling and simulation technology is proposed and the new challenges they are facing are discussed. The research contents and preliminaryresults on neo-type artificial intelligence system oriented modelling and simulation technology are given, which includeneo-type artificial intelligence system oriented modelling/secondary modelling, intelligent simulation computer, smart cloud simulation and intelligent simulation hardware/software supporting system technology, and intelligent simulation system application engineering technology. Several artificial intelligence application examples, such as intelligent manufacturing, intelligent medical treatment, smart city and intelligent agriculture etc., are introduced. Suggestions on the development of neo-type artificial intelligence system oriented modelling and simulation technology are proposed.
Keywords: modelling and simulation; artificial intelligence; smart cloud simulation; intelligent simulation computer
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Simulation of Cyber-Physical Systems of Systems:
Some Research Areas -Computational Understanding, Awareness, and Wisdom
Tuncer ?ren, Emeritus Professor
http://www.site.uottawa.ca/~oren/
School of Electrical Engineering and Computer Science University of Ottawa, Ottawa, ON, Canada
Abstract: After a brief emphasis about the interconnected world, including Cyber-Physical Systems of Systems, the increasing importance of the decision-making by autonomous, quasi-autonomous, and autonomic systems is emphasised. Promising roles of computational understanding, computational awareness, and computational wisdom for better autonomous decision-making are outlined. The contributions of simulation-based approaches are listed.
Keywords: Cyber-Physical Systems of Systems; decision-making by autonomous and autonomic systems, computational understanding, computational awareness, computational wisdom; simulation-based knowledge processing
中图分类号:TM89???? 文献标识码:B??? 文章编号:1004-731X (2018) 02-0363-23
DOI: 10.16182/j.issn1004731x.joss.201802002
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网电空间作战建模仿真研究综述
司光亚,张阳,王艳正
(国防大学联合作战学院,北京100091
摘要:建模仿真是研究网电空间作战天然有效又不可或缺的手段。本文立足于联合作战层次,从网电攻防武器装备试验靶场建设、网电空间作战概念演示环境建设以及网电空间作战指挥信息系统建设三个层次论述了网电空间作战建模仿真所具有的演化特征,并在此基础上从网络信息环境、实体、行动与效果四个方面介绍了国内外网电空间作战建模仿真技术的研究进展。从军事与技术视角分析了当前网电空间作战建模仿真面临的新挑战。
关键词:联合作战;网电空间作战;建模仿真
中图分类号:TP391.9???? 文献标识码:B????? 文章编号:1004-731X (2018) 02-0386-12
DOI: 10.16182/j.issn1004731x.joss.201802003
Review on Modeling and Simulation of Cyberspace Operation
Si Guangya, Zhang Yang, Wang Yanzheng
(Joint Operations College of National Defence University, Beijing 100091, China)
Abstract: Modeling and Simulation (M&S) is the effective and indispensable method to research cyberspace operation. On the view of joint operation level, the evolution feature of the cyberspace operation M&S is analyzed, which includes the constructions of the cyberspace weapons range, the cyberspace operation concept environment, and the cyberspace operation command information system. The progress of the cyberspace operation M&S is introdeced, including the networked information environment, the entity, the action and the effection. The new challenges of the cyberspace operation M&S are analyzed from the military angle and technology angle.
Keyword: joint operation; cyberspace operation;modeling and simulation
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陆军作战指挥实体动态决策建模问题研究
康凯1,张永亮1,李晨溪1,潘金堂2
(1. 解放军理工大学指挥信息系统学院,江苏南京 2100072. 解放军73906部队,江苏南京 210007)
摘要:为满足现代战争陆军各级各类指挥所开展方案模拟论证与计划仿真评估的需要,在领域专家经验以及军事规则的支持下,提出了一种基于动态贝叶斯网络的指挥实体动态决策建模方法。通过对动态决策规则的结构化描述,构建了陆战场态势的动态贝叶斯网络模型,基于贝叶斯网络推理模型进行态势相关估计,实现对陆战场的实时变化态势动态分析、理解与判断,可以较好地体现作战系统的复杂自适应的特性,为解决陆军指挥实体动态决策建模问题提供了一种较好的解决办法。
关键词:陆军作战;指挥实体;动态决策建模;贝叶斯网络
中图分类号:TP391.9;E211????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0398-08
DOI: 10.16182/j.issn1004731x.joss.201802004
Dynamic Decision-Making Modeling for Army Operation Command Post Entity
Kang Kai1, Zhang Yongliang1, Li Chenxi1, Pan Jintang2
(1. The Institute of Command Information System in PLA University of Science and Technology, Nanjing 210007, China;2ztag8879环亚手机|首页主页
2. The Troop of 73906 PLA, Nanjing 210007,China)
Abstract: The paper presents a modeling method of dynamic decision-making for army operation command post entity based on the Bayesian Net (BN) to meet the demands of demonstrating the operational blue print and evaluating the plan with the support of subject matter experts and military rules. The method brings about the structured description for the decision-making rules, builds the BN model for battlefield situation, and actualizes the situation estimation based on the model of BN reasoning. Therefore it gives the reasonable analysis, the in-depth understanding and right dynamic estimation to the land battlefield dynamic situation, which embodies the complexity and self-adaptability of the joint operation. It provides a better solution to solve the dynamic decision-making modeling problem of the army operation command post entity.
Keywords: army operation; command post entity; modeling of dynamic decision making; Bayesian Net
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基于分类的多属性实体推荐
宋美娜1,2,赵雪君1,2,鄂海红1,2
1.北京邮电大学计算机学院,北京 1008762.教育部信息网络工程研究中心,北京 100876
摘要:在面向实体推荐的探究过程中,包含多样属性的实体获得了越来越多的关注。然而,在面对这种复杂实体对象的推荐过程中,当前的研究工作者大多选用其中一种属性,利用相关算法得以实现。在基于分类处理的方法,对推荐实体的属性进行了深入探究,将物品属性网络划分为多个子信息网络。在子信息网络中,以属性数目为界,将子网络中的多属性以及单属性转化为实体相似度的多样途径,结合实体相似度以及相关算法,得出推荐结果。最后通过实验验证本文的算法,引用多样属性不仅体现了推荐多样性,还提高了推荐精度
关键词:实体推荐;多样属性;分类;相似度途径
中图分类号:TP391.9????? 文献标识码:A??? ???文章编号:1004-731X (2018) 02-0405-09
DOI: 10.16182/j.issn1004731x.joss.201802005
Multiple-attribute Entity Recommendation Based on Classification
Song Meina1,2, Zhao Xuejun1,2, E Haihong1,2
(1.School of Computer Science, Beijing University of Posts & Telecommunications, Beijing 100876, China;
2.Information Network Engineering Research Center of Ministry of Education, Beijing 100876, China)
Abstract: In the process of exploring entity recommendation, the entity containing diverse attributes has gained more and more attention. Most of the current researchers mainly select one attribute, and embody it in the related algorithms and their extensions even though the entity is combined with multiple attributes in entity recommendation. In this paper, on the basis of the classification method, we delve into physical properties of the recommended entities, divide entity’s attribute information network into multiple sub ones. In sub information network, bounded by the amount of attributes, the single attribute and even multiple attributes can be diverted into diverse paths of entity similarity, combining with entity similarity and related algorithm, where we can get the recommended results. This study not only refers to various attributes, but also improves the precision of recommendation.
Keywords: entity recommendation; multiple attribution; classification; similarity path
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铝土矿连续球磨过程粒度分布预测模型
马天雨1,王雅琳2,沈坤1,刘金平1
(1. 湖南师范大学物理与信息科学学院,湖南长沙 4100062. 中南大学信息科学与工程学院,湖南长沙 410083)
摘要:针对球磨过程粒度分布难以在线检测的问题,基于数据驱动方法和PBM(Population Balance Model)模型框架,建立铝土矿连续球磨过程粒度分布预测模型。根据铝土矿分批磨矿特性数据改进PBM破碎速率模型结构;考虑不同粒级物料的停留时间分布特性,改进停留时间分布密度函数;由分批实验获得的铝土矿磨矿特性数据和连续球磨过程采样数据反算寻优模型关键参数。工业试验数据验证结果表明所建模型精度高,满足实际生产需要。
关键词:球磨过程;粒级质量平衡;停留时间分布;数据驱动
中图分类号:TP393 ????????文献标识码:A????????文章编号:1004-731X (2018) 02-0414-08
DOI: 10.16182/j.issn1004731x.joss.201802006
Prediction Model of Particle Size Distribution in Bauxite Continuous Ball Milling Process
Ma Tianyu1, Wang Yalin2, Shen Kun1, Liu Jinping1
(1. College of Physics and Information Science, Hunan Normal University, Changsha 410006, China; 2ztag8879环亚手机|首页主页
2. College of Information Science and Engineering, Central South University, Changsha 410083, China)
Abstract: As it is difficult to detect the particle size distribution of ball milling process on line, a prediction model of particle size distribution in bauxite continuous ball-milling process is proposed, which is based on data-driven method and population balance model (PBM) frame. The break-rate model structure of PBM is improved according to the characteristic data of batch grinding test of bauxite. The residual time distribution density function is improved by considering the characteristics of residence time distribution for different particle sizes. The key parameters of the model are optimized by the data of batch-test and continuous ball-milling process using back-calculation method. The industrial test data verification results show that the model accuracy meets the needs of practical production.
Keywords: ball milling process; population balance model; residual time distribution; data-driven
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栾新1,辛佳1,宋大雷2,赵维加3
1.中国海洋大学信息科学与工程学院,青岛 2661002.中国海洋大学工程学院,青岛 2661002ztag8879环亚手机|首页主页
3.
青岛大学数学与统计学院,青岛 266071
摘要:根据谱延迟校正法的思想来设计求解分数阶微分方程组初值问题的高精度格式,减少离散非局部的分数阶微积分算子时节点的使用量。基于分数阶微分方程和Volterra积分方程的等价性,从Volterra积分方程中推导出了残差函数误差方程,并采用谱延迟校正的思想来构造一种求解带有Caputo导数算子的分数阶微分方程组初值问题的高精度数值算法。该算法可以使用相对较少的节点来获得较高精度的数值解,从而有效地减小了由于Caputo导数算子的非局部性特征而带来的巨大计算量。通过数值实验验证了提出的新方法的高精度和有效性。
关键词:分数阶微分方程组;Caputo导数算子;残差函数;误差方程;谱延迟校正法
中图分类号:O241.8???? ?????文献标识码:A??? ?????文章编号:1004-731X (2018) 02-0421-06
DOI: 10.16182/j.issn1004731x.joss.201802007
High Order Numerical Method for System of Fractional Differential Equations
Luan Xin1, Xin Jia1, Song Dalei2, Zhao Weijia3
(1.College of Information Science & Engineering, Ocean University of China, Qingdao 266100, China; 2.College of Engineering, Ocean 2ztag8879环亚手机|首页主页
University of China, Qingdao 266100, China; 3.College of Mathematics & Statistics, Qingdao University, Qingdao 266071, China)
Abstract: A spectral deferred correction method for classical ordinary differential equations is extended and reconstructed to solve a system of fractional differential equations (FDES) by accelerating the convergence of lower order schemes. Based on the residual function and the error equationdeduced from Volterra integral equations equivalent to the fractional differential equations, a new highorder numerical method for a system of FDES is constructed according to the idea of spectral deferred correction. The proposed method allows that one can use a relatively few nodes to obtain the high accuracy numerical solutions of FDES without the penalty of a huge computational cost due to the non-locality of Caputo derivative. The numerical experiments verify the high accuracy and efficiency of the method.
Keywords: system of fractional differential equations; Caputo derivative; residual function; error equation; spectral deferred correction method
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一种模拟基底神经节机理的自主认知模型
李宗帅1,陈静2
(1.中国民航大学电子信息与自动化学院,天津 3003002.天津职业技术师范大学信息技术工程学院,天津 300222)
摘要:针对智能体自主认知问题,采用适者生存WTA学习机制,利用基底神经节中的皮质-纹状体突触修饰机理,基于操作学习原理提出了基底神经节的自主认知模型,该模型适用于有限行为的认知学习,应用该仿生学习模型对Skinner的鸽子实验进行了模拟,模拟了Skinner鸽的渐进自适应学习过程,仿真结果表明本文所提出的行为认知模型是有效的。将该认知模型用于自平衡机器人的自主平衡学习中,在未知机器人数学模型的前提下通过模型中的操作学习达到自平衡学习的目的,为智能体仿生认知模型的研究提供了参考。
关键词:操作学习模型;基底神经节;认知模型;机器鸽;自平衡机器人
中图分类号:TP181??? ??????文献标识码:A??????? 文章编号:1004-731X (2018) 02-0427-08
DOI: 10.16182/j.issn1004731x.joss.201802008
An Autonomous Cognitive Model Simulating Basal Ganglia Mechanism
Li Zongshuai1, Chen Jing2
(1. School of electronic information and automation, Civil Aviation University of China, Tianjin 300300, China; 2ztag8879环亚手机|首页主页
2. School of information technology engineering, Tianjin University of Technology and Education, Tianjin 300222, China
)
Abstract: Aiming at autonomous cognition problem, applying the winner-takes-all(WTA) learning mechanism, using cortical-striatal synaptic modification principle in basal ganglia, as well as based on the operant conditioning reflex theory, the basal ganglia autonomous cognitive model is established, which is suitable for the cognitive learning with limited actions. Skinner's pigeons experiment was simulated by applying this bionic learning model, which showes a gradual process of adaptive learning. The simulation results reflect that the proposed cognitive model is effective and can be used in the balance learning for a self-balancing robot. In the premise of unknown robot mathematical model, the purpose of self-balancing learning is achieved through the operant learning in the proposed model. This research provides a reference for agent's bionic cognitive model.
Keywords: operant learning model; basal ganglia; cognitive model; robotic pigeon; self-balancing robot
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制导控制系统的多准则变权综合评估方法
王雨潇,王松艳,晁涛,杨明
(哈尔滨工业大学控制与仿真中心,哈尔滨 150080
摘要:制导控制系统性能评估工作在飞行器研发过程中必不可少,然而完整的综合评估方法和相应的支撑工具目前还比较缺乏。鉴于此,对飞行器制导控制系统性能评估方法进行研究,分析了系统的结构关系,建立了层次化的性能评估指标体系;针对飞行器评估的数据可靠性、指标分辨度不一等特点,提出了多准则构权的变权综合方法;最后给出了飞行器制导控制系统性能评估实例。实例表明,所提出方法的定权依据较为科学,并且可以兼顾系统的均衡性给出合理评价结果,为制导控制系统性能评估提供了可用方法和工具。
关键词:制导控制系统;性能评估;指标体系;指标计算方法;多指标综合
中图分类号:TP391.9??? ????文献标识码:A?????? 文章编号:1004-731X (2018) 02-0435-08
DOI: 10.16182/j.issn1004731x.joss.201802009
Multi Criterion Variable Weight Comprehensive Evaluation Method of Guidance and Control System
Wang Yuxiao, Wang Songyan, Chao Tao, Yang Ming
(Control and Simulation Center, Harbin Institute of Technology, Harbin 150080, China)
Abstract: The evaluation of guidance and control system is necessary in the process of vehicle development. In view of lacking of effective comprehensive evaluation methods and the corresponding auxiliary software, the performance evaluation methods of vehicle guidance and control systems are researched, the structure of the system is analyzed, and a hierarchical performance evaluation index system is established. Considering the varying degrees of the data reliability and independence of each index, a variable-weight comprehensive method with multi-criteria is proposed. A performance evaluation example of vehicle guidance and control system is given which shows that the proposed method weights the index comprehensively. A reasonable evaluation result is given considering the balance of system performance, which provides available method for the follow-up guidance and control system performance evaluation.
Keywords: guidance and control system; performance evaluation; index system; index calculation methods; multi-index comprehensive
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Optimization of Q-BTGSID Based on Sensitivity Analysis
一种基于HRRP的三维散射中心提取方法
崔闪,李胜,闫华
(电磁散射重点实验室,北京 100854
摘要:散射中心提取是雷达目标特性研究中的关键内容,滑动型散射中心的提取尤其重要。提出一种基于典型体散射中心参数化模型的提取方法,通过二次Hough变换得到散射中心的位置和滑动半径参数,在此基础上得到散射中心在雷达视线上的距离,并从一维距离像历程图中获取有用的信息,进而估算出散射中心的尺寸参数,并对散射中心进行信号重建。此方法既能解决点散射中心的提取问题,又能很好地解决滑动型散射中心的提取问题。仿真实例证明了重建模型的适用性。
关键词:散射中心;参数化模型;典型体;位置参数;尺寸参数
中图分类号:TP391.9???? ????文献标识码:A?????? 文章编号:1004-731X (2018) 02-0443-09
DOI: 10.16182/j.issn1004731x.joss.201802010
A Method of 3D Scattering Center Extraction Based on Multiple HRRP Series
Cui Shan, Li Sheng, Yan Hua
(Science and Technology on Electromagnetic Scattering Laboratory, Beijing 100854, China)
Abstract: Scattering center extraction is the key content in the research of radar target characteristics, particularly the sliding type of scattering center. An extraction method based on the parametric scattering center model is proposed, which takes advantage of Hough transformation to extract geometric location and sliding radius parameters. The distance is gotten in the line of radar sight, and the useful information is obtained from high-resolution range profile (HRRP) series, which estimates size parameter of scattering centers and accomplishes signal reconstruction. This method solves the problems of point and sliding scattering center extraction. Simulation example manifests the applicability of the reconstructed model.
Keywords: scattering center; parametric scattering model; typical reflector; position parameter; size parameter
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战场态势多尺度表达研究
黄亚锋,李旭东,张航峰
(南京电子技术研究所,南京210039
摘要:从态势尺度的定义、尺度变换种类与过程、态势多尺度表达的典型样式和应用场景等方面对态势多尺度表达进行概念研究。提出态势尺度是由广度、粒度、比例与空间、时间、语义组成的笛卡尔乘积。将尺度变换划分为尺度上推和尺度下推两类,将尺度变换过程分解为由广度变换、粒度变换、可视化派生总结态势多尺度表达的典型样式类型,包括作战视图族、层次细节显示、变比例尺显示,这些样式分别应用多任务协同、同一任务不同层级协同、固定目标跟踪的场景
关键词:战场态势;可视化;多尺度表达;尺度变换
中图分类号:TP391.9????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0452-08
DOI: 10.16182/j.issn1004731x.joss.201802011
Multi-scale Representation of Battlefield Situation
Huang Yafeng, Li Xudong, Zhang Hangfeng
(Nanjing Research Institute of Electronics Technology, Nanjing 210039, China)
Abstract: This paper studies the multi-scale representation of battlefield situation at the conceptual level in different aspects, such as the concept of situation scale, scale transformation and typical styles of multi-scale representation. The scale of battlefield situation as the Cartesian product of two sets is defined, in which the first set contains space, time, and semantics; the other set contains breadth, granularity, and ratio. The scale transformation is classified into two types: scale downward and scale upward. The scale transformation is decomposed into three basic operations, i.e. breadth transformation, transformation and visualization derivation. The study points out that FIOP, LOD and Pliable Display Technology are three typical styles of multi-scale representation which can be used in scenarios of cooperative multitasking, different levels' cooperation under one specific task and fixed object tracking respectively.
Keywords: battlefield situation; visualization; multi-scale representation; scale transformation
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基于粗糙集和灰色关联分析的仿真可信度评估
刘慧博,钱永杰
(内蒙古科技大学信息工程学院,内蒙古包头 014010)
摘要:仿真模型的可信度评估一直是仿真领域内一个热点问题。如何对仿真进行可信度评估,是仿真技术发展过程中不可忽略的关键,开展可信度评估研究对我国仿真技术的发展具有重要的意义。针对如何对仿真系统进行客观的可信度评估,分析了灰色关联分析理论及粗糙集理论中相关的原理,提出了基于粗糙集理论和灰色关联分析的仿真可信性的评估模型,利用粗糙集理论中的不可分辨原理客观地进行各因素的权重分配,结合灰色关联分析法来进行仿真可信性的综合评估。最后以某飞行仿真系统为例,验证了该方法的可行性。
关键词:粗糙集;灰色关联分析;仿真;可信度评估
中图分类号:TP391.9????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0459-06
DOI: 10.16182/j.issn1004731x.joss.201802012
Evaluation of Simulation Credibility Based on Rough Set and Gray Correlation Analysis
Liu Huibo, Qian Yongjie
(School of Information Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China)
Abstract: The evaluation of simulation model credibility has always been a hot issue in the simulation field. How to evaluate the credibility of the simulation is the key to the development of the simulation technology.It is of great significance for our country to carry out the credibility evaluation research. In view of the issue, the grey correlation analysis theory and the related principles in rough set theory are analyzed and the simulation credibility evaluation model based on rough set and grey correlation analysis is proposed. The indiscernibility principle in rough set is used to assign the weight distribution of each factor objectively. The comprehensive evaluation of simulation credibility is carried out by combining the grey correlation analysis method with the indiscernibility principle in rough set. The feasibility of this method is verified through an example of the flight simulation system.
Keywords: rough set; grey relational analysis; simulation; evaluation of credibility
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面向设计模型的高速列车动力学仿真研究
谢星1,唐兆2,姜杰1,邹益胜1,丁国富1
1.西南交通大学机械工程学院先进设计与制造研究所,成都 6100312.西南交通大学牵引动力国家重点实验室,成都 610031
摘要:传统的机车车辆动力学更多关注于数值仿真而与设计模型相脱离,LMS Virtual.Lab Motion是由CAA V5开发集成在CATIA环境中的多体动力学软件,在航空、汽车等工程领域得到广泛应用,但要拓展到机车车辆动力学尚待解决轮轨动态作用等瓶颈问题。为此,在集成于CADMotion坏境中,利用CAA V5Motion的二次开发功能,自定义多个机车车辆特有力元,并结合C++Fortran混合编程技术集成轮轨关系求解模块,构建了基于设计模型的高速列车动力学仿真分析模型。通过与SimpackCRH2算例的定性分析对比,验证了方法的可行性,为其CAD/CAE集成提供了思路。
关键词:高速列车;车辆动力学;设计模型;Motion;二次开发
中图分类号:TP391.9????? 文献标识码:A??? ???文章编号:1004-731X (2018) 02-0465-08
DOI: 10.16182/j.issn1004731x.joss.201802013
Design-Model-Oriented Simulation for High-Speed Railway Dynamics
Xie Xing1, Tang Zhao2, Jiang Jie1, Zou Yisheng1, Ding Guofu1
(1.Institute of Advanced Design & Manufacturing, School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2.Traction Power State Key Lab, Southwest Jiaotong University, Chengdu 610031, China)
Abstract: The traditional vehicle dynamics focuses more on numerical simulation, which separates from design model. LMS Virtual.Lab Motion natively integrated in CATIA is a multi-body dynamics package developed with CAA V5 for mechanical system, which is widely applied in engineering fields, such as aerospace, automotive, etc. But to expand to the dynamics of locomotive vehicle, the bottleneck problem of wheel/rail dynamic interaction should be solved. This paper employs CAA V5 and Motion UDF/UDS functions to create some special force elements which distinguish locomotive vehicles from general multibody system applications, and to integrate wheel/rail interaction solver module which determines wheel/rail contact locations and forces through hybrid programming of Fortran and C++. A simulation model for high-speed railway based-on CAD design model is built. Compared with Simpack, the analysis results of CRH2 reveal that the method is valid and available, and brings forward a new study way for CAD/CAE integration for high-speed railway.
Keywords: high-speed railway; vehicle dynamics; design model; motion; secondary development
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基于图元紧密型分布合成的镶嵌画效果模拟
陈婕,杨刚,杨猛
(北京林业大学信息学院,北京100083)
摘要:提出一种方法,能快速合成多种形状图元的紧密型分布,从而实现镶嵌画效果模拟。该方法基于Voronoi图进行区域分割,每一个分割小块代表一个图元所占空间,从而实现图元紧密分布。在生成Voronoi图的过程中,使用不同的距离度量标准控制Voronoi多边形形状,从而实现五种不同形状图元的紧密型分布。进一步地,该方法可通过生成具有尺度、方向变化的图元分布,模拟富有变化的镶嵌画效果。此外,还借助GPU的计算能力对Voronoi图生成过程进行了加速。实验结果表明,该方法合成效果好,合成效率可达交互。
关键词:图元;镶嵌画;紧密型分布;Voronoi图;纹理合成;向量场
中图分类号:TP391.41???????? 文献标识码:A?????? 文章编号:1004-731X (2017) 12-0473-09
DOI: 10.16182/j.issn1004731x.joss.201712014
Simulation of Mosaic Picture Based on Compact Distribution Synthesis of Element
Chen Jie,Yang Gang, Yang Meng
(Department of Computer Applied Technology, Beijing Forestry University, Beijing 100083, China)
Abstract: A new method that can rapidly synthesize the compact distribution of diverse types of elements is proposed to realize the simulation of mosaic. The Voronoi diagram is adoptedto segment the distribution region, and each part represents a space occupied by a graphic element to realize the compact distribution of graphic elements. In the process of generating Voronoi diagram, five different distance metrics are used to control the shape of the Voronoi polygon for achieving the compact distribution of the five different shapes. The method can generate graphic element distribution with scale and direction variations so as to simulate the variations of the mosaic. It also improves the synthesis rate with the help of GPU. The results show that the method enjoys good synthesis effects, while the synthesis efficiency can reach the interaction.
Keywords: graphic elements; mosaic; compact distribution; Voronoi diagram; texture synthesis; vector field
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飞机ARINC429数据传输串扰过程建模与仿真
石旭东1,2,王若文2,王家林2,赵宏旭2
1.中国民航大学航空地面特种设备民航研究基地,天津 3003002.中国民航大学电子信息与自动化学院,天津 300300
摘要:基于多导体传输线理论,应用了MATLAB和CST进行数学建模仿真和实物建模仿真,对比分析了不同模型下的单根线缆对非屏蔽双绞线的串扰,验证了CST实物仿真模型的有效性和准确性。研究了屏蔽双绞线屏蔽层双端悬空时,飞机上直流电源接通或断开对飞机ARINC429数据传输线产生的串扰;并分析了单根线缆与ARINC429数据传输线在不同间距和不同平行敷设长度情况下的线间串扰。对飞机ARINC429数据传输线的实际安装过程有一定的指导作用,为将来复杂线缆结构串扰分析提供了一定的研究基础。
关键词:传输线理论;非屏蔽双绞线;屏蔽双绞线;串扰;建模;仿真
中图分类号:TP391.9????? 文献标识码:A??? ???文章编号:1004-731X (2018) 02-0482-07
DOI: 10.16182/j.issn1004731x.joss.201802015
Modeling and Simulation of the Crosstalk on Aircraft ARINC429 Data Bus
Shi Xudong1,2, Wang Ruowen2, Wang Jialin2, Zhao Hongxu2
(1.Aviation Ground Special Equipments Research Base, Civil Aviation University of China, Tianjin 300300, China;2ztag8879环亚手机|首页主页
2.College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China)
Abstract: Based on the theory of multi-conductor transmission line, the crosstalk between a single cable and a UTP (unshielded twisted pairs) cable was studied. The MATLAB and CST were employed to do the theoretical calculation and modeling respectively, and the comparison result proved the validity and accuracy of the proposed model. Based on the UTP model, the shielding layer was used to build the STPshielded twisted-wire pairs model according to the ARINC429 specification, and the crosstalk which caused by a large voltage transient happening on the adjacent power line on the aircraft was further analyzed. The distance and length of the cables were chosen as the main factors for studying the impact on the crosstalk. The study played an important guiding role for actual ARINC429 data bus installation on the airplane, and paved the way for analyzing the crosstalk effect of complex cable structure in the future.
Keywords: transmission-line; UTP; STP; crosstalk; modeling; simulation
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城市群交通网络抗毁性仿真研究
李成兵1,魏磊2,卢天伟3,高巍1
1.内蒙古大学交通学院,内蒙古呼和浩特 0100702.北京航空航天大学交通科学与工程学院,北京 1001912ztag8879环亚手机|首页主页
3.
北京交通大学交通运输学院,北京 100044
摘要:为保障城市群交通运输系统安全运营,以复合的视角探索城市群交通网络抗毁性采用站点映射法构建城市群加权复合交通网络模型。针对城市群加权复合交通网络结构,对传统抗毁性测度指标进行修正并确定攻击模式。以呼包鄂城市群为例进行实证研究,构建道路-轨道加权复合交通网络模型,对网络抗毁性进行仿真,识别路网中的关键站点。结果表明:城市群复合交通网络的构建有效提高了单一运输方式网络的抗毁性,通过对识别出的关键站点加强防护提高城市群复合交通网络的抗毁性。
关键词:城市群;加权复合交通网络;抗毁性;关键站点
中图分类号:U491???? ???文献标识码:A??? ?????文章编号:1004-731X (2018) 02-0489-08
DOI: 10.16182/j.issn1004731x.joss.201802016
Invulnerability Simulation Analysis of Compound Traffic Network in Urban Agglomeration
Li Chengbing1, Wei Lei2, Lu Tianwei3, Gao Wei1
(1.School of Transportation, Inner Mongolia University, Hohhot Inner Mongolia 010070, China; 2ztag8879环亚手机|首页主页
2. School of Transportation Science and Engineering, Beihang University, Beijing 100191, China; 2ztag8879环亚手机|首页主页
3.School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China)
Abstract: To ensure the security operations of urban agglomeration transportation system, the perspective on compound network is used to explore the invulnerability of urban agglomeration traffic network. The site mapping method is used to build the model of weighted compound traffic network in city agglomeration. The traditional invulnerability metrics is revised and the attack strategies are determined according to the structure of the network. Hu-Bao-E city agglomeration is taken as an example to build the weighted compound traffic network model which is composed of road network and rail transit network, simulating the invulnerability and identifying key nodes in the city agglomeration. Results show that the construction of compound traffic network effectively improves the invulnerability of single mode traffic network and the strengthening protection of the key nodes can improve the invulnerability of compound traffic network in city agglomeration.
Keywords: city agglomeration; weighted compound traffic network; invulnerability; key nodes
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基于自适应耦合算法的石材锯切过程仿真研究
田永军1,2,段国林1*,康军广1,刚建华1
(1.河北工业大学机械工程学院天津 3001302.天津职业技术师范大学工程实训中心天津 300222)
关键词:混合单元自适应耦合;石材切割;圆锯片;脆性材料
中图分类号:TP29;TH122????? 文献标识码:A?????文章编号:1004-731X (2018) 02-0497-09
DOI: 10.16182/j.issn1004731x.joss.201802017
Simulation of Stone Cutting Process Based on Adaptive Coupling Method
Tian Yongjun1,2, Duan Guolin1*, Kang Junguang1, Gang Jianhua1
1.School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China;2ztag8879环亚手机|首页主页
2.Tianjin University of Technology and Education,Engineering Training Center, Tianjin 300222, China )
Abstract: Aiming at complex nonlinear dynamic behaviors of stone-cutting process with circular saw and handling large mesh deformation instability in FEM, according to brittle material fracture mechanism, an adaptive coupling algorithm was established for calculating the cutting process of circular saw-stone materials system. The results show that the material removal process is a process of intermittent cycle; the cutting force is zero at the beginning of the process, and the force increases rapidly when the blade contacts with the stone, then decreases, eventually varies in a stable fluctuation. According to von-Mises stress distributions of saw blade and stone, the easily damaged region is determined. Through comparison, it is found that the blades’ transverse vibration velocity simulation data are consistent with the experimental results.
Keywords: adaptive hybrid element adaptive coupling method; stone cutting; circular saw blade; brittle material
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考虑网约车影响的出租车乘客出行方式仿真
,李彦瑾,罗霞
(西南交通大学交通运输与物流学院,四川成都610031)
摘要:为了研究信息环境下出租车乘客对巡游车及网约车的出行方式选择特性,分析出行方式的影响因素,结合乘客自身特性计算不同乘客的时间价值,通过表示巡游车与网约车的空驶行为差异以量化两类服务模式乘客的等待时间,采用仿真方法得出乘客对巡游车、网约车及私家车的选择偏好。仿真结果表明,网约车在价格略高于出租车及规模略少与出租车情况下,仍能占有一定的市场份额且保持较低空驶率。研究旨在为掌握网约车的影响程度提供仿真方法。
关键词:交通工程;出租车;出行方式选择;网约车;空驶搜索行为;仿真
中图分类号:U491????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0505-08
DOI: 10.16182/j.issn1004731x.joss.201802018
Simulation of Taxi Passenger Travel Mode Considering the Influence of Online Booking Taxi
Cao Yi, Li Yanjin, Luo Xia
(Southwest Jiaotong University, school of transportation and logistics, Chengdu 610031, China)
Abstract: To reflect a systematic account of the impact online booking taxi and cruise taxi under the condition of information, the travelling mode choice of taxi passengers was researched. The influence factors of travelling mode choice of taxi passengers were analyzed and the time values related to passenger’s own characteristics were evaluated. The functions of waiting time of online booking taxi passengers and cruise taxi passengers were formed by investigating the difference of searching behavior. Through using simulation method, the priority for online booking taxi, cruise taxi and private cars was obtained .The results showed that the online booking taxis still occupied a certain market share even at the higher price and smaller fleet size than cruise taxis and kept lower empty rate. The simulation method can be used for discussing the effect of online booking taxis.
Keywords: traffic engineering; taxi; travelling mode choice; online booking taxi; searching behavior; simulation
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地面在线飞行仿真系统设计
余长贵1,熊洪睿1,田凯1,李春涛2
(1. 成都飞机工业(集团)有限责任公司,成都 6100912. 南京航空航天大学自动化学院,南京 210016)
摘要:针对铁鸟试验台和半物理仿真试验室成本高,无法移动的现状,介绍了一套高度集成的便携式地面在线飞行仿真系统。搭建无人机运动学模型、传感器模型和相关子系统,将其集成于一体,实现1553BRS422、模拟量和PWM波等多信号交联。建立风干扰模型,以及各类系统故障,验证无人机应急处置策略。将仿真系统与真实机载设备连接,进行地面在线飞行模拟试验,完成无人机从起飞、航行和着陆整个飞行过程的模拟,检验机载软件的正确性、合理性,保证了飞行安全。
关键词:无人机;铁鸟试验台;半物理仿真试验室;地面在线飞行;机载软件
中图分类号:V216.7;V217+.21????? 文献标识码:A????? 文章编号:1004-731X (2018) 02-0513-08
DOI: 10.16182/j.issn1004731x.joss.201802019
Design of Ground Online Flight Simulation System
Yu Changgui1, Xiong Hongrui1, Tian Kai1, Li Chuntao2
(1. AVIC CHENG DU AIRCRAFT INDUSTRIAL (GROUP) CO., LTD, Chengdu 610091, China;2ztag8879环亚手机|首页主页
2. Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)
Abstract: Aiming at the high cost and the immovable characteristics of the airplane iron bird test-bed and the semi-physical simulation laboratory, a highly integrated and movable system named as ground online flight is introduced. The dynamics and kinematics of unmanned aerial vehicle, sensors model, engines model and related subsystems are established and integrated into a device; the connections of 1553B, RS422, analog signal, discrete signal, pulse signal, PWM signal and so on are implemented. The wind model and the typical system faults are set up to study the robustness of the UAV, and test the UAV strategy which deals with the emergency. The system is connected to the airborne equipment, and the simulation of ground online flight is conducted to complete the entire flight process of preparation, taking off, voyage and landing. The correctness and rationality of the aviation software are examined, which can provide the UAV flight information for the pilots to ensure the flight safety.
Keywords:unmanned aerial vehicle; airplane iron bird test-bed; semi-physical simulation laboratory; ground online flight; aviation software
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基于GPNMF的工业过程故障检测
牛玉广1,王世林2,林忠伟1,2,李晓明3
(1.华北电力大学新能源电力系统国家重点实验室,北京 1022062.华北电力大学控制与计算机工程学院,北京 1022062ztag8879环亚手机|首页主页
3.东北电力大学自动化工程学院,吉林 132012)
摘要:非负矩阵分解(NMF)作为一种新的矩阵降维技术已经广泛应用于不同的科学领域。NMF要求待分解矩阵元素均为非负值,但是,实际工业过程所产生的运行数据并不能保证都是非负的。针对这一问题,提出一种新算法——广义投影非负矩阵分解(GPNMF)。利用GPNMF提取测量矩阵中包含过程运行特征的隐变量信息,使之与过程监控技术相结合来实现工业过程的故障检测,并构建相应的贡献图法来实现故障分离。将所提算法应用于国内某电厂1 000 MW机组锅炉系统,实验结果验证了新方法对故障检测及分离的有效性。
关键词:故障检测;故障分离;广义投影非负矩阵分解;锅炉过程
中图分类号:TP277???????? 文献标识码:A??????? 文章编号:1004-731X (2018) 02-0521-12
DOI: 10.16182/j.issn1004731x.joss.201802020
Fault Detection Based on GPNMF for Industrial Process
Niu Yuguang1, Wang Shilin2, Lin Zhongwei1,2, Li Xiaoming3
(1. State Key Laboratory for Alternate Electric Power System with Renewable Energy Source, North China Electric Power University, Beijing 102206, China; 2. School of Control and Computer Engineering, North China Electric Power University, Beijing 102206, China; 3. School of Automation Engineering, Northeast Dianli University, Jilin 132012, China)
Abstract: As a newly dimension reduction technique, non-negative matrix factorization (NMF) has been applied in varying research areas. NMF methods require the original data non-negative. However, the operating data of industrial process maybe not satisfy this restriction. To resolve the problem, a new method is presented, which can be called as generalized projection non-negative matrix factorization (GPNMF). We use GPNMF to extract the latent variables that drive a process and to combine them with process monitoring techniques for fault detection. The corresponding contribution plots are defined for fault isolation. The proposed method is applied to a 1 000 MW unit boiler process. The simulation results clearly illustrate the feasibility of the proposed method.
Keywords: fault detection; fault isolation; generalized projection non-negative matrix factorization; boiler process
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小世界网络环境下谣言传播对产品定价的影响
李锋1,魏莹2
(1. 华南理工大学工商管理学院,广东广州 5106402. 暨南大学企业管理系,广东广州 510632)
摘要:以经典谣言传播模型SIR为背景,采用多智能体建模与仿真方法分析谣言在市场上消费者小世界关系网络中传播,企业的产品定价和利润变化。仿真结果不仅验证了前人指出的数学分析方法研究谣言传播问题的局限性。更重要的是,仿真分析结果从四个维度指标证实了PageRank算法在选择谣言传播源头节点的有效性。并且,仿真分析了SIR模型中谣言传播速度和停播速度两个参数对企业产品定价和利润的影响。仿真结果表明谣言传播速度越快,或/和停播速度越快,谣言对企业的利润负面影响就越小。
关键词:定价策略;小世界网络;谣言传播;多智能体建模仿真
中图分类号:TP391.9????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0533-10
DOI: 10.16182/j.issn1004731x.joss.201802021
Impact of Rumor Spreading in a ‘Small World’ Social Network on Pricing Decision
Li Feng1, Wei Ying2
(1. School of Business Administration, South China University of Technology, Guangzhou 510640, China;2ztag8879环亚手机|首页主页
2. Department of Business Administration, Jinan University, Guangzhou 510632, China)
Abstract: This paper adopts methodology of multi-agent based modeling to represent rumor spreading on small-world social network and to address impacts of rumor on pricing decision and profit of supplier. In the model, the process of rumor diffusion follows well-accepted ‘Susceptible-Infective-Removal’ (SIR) model. Simulation proved that mathematic analysis of SIR model overestimated the results of rumor diffusion while PageRank algorithm is a more ‘efficient’ method to choose the source node for rumor propagation according to all four proposed indicators. Sensitivity analysis of two parameters in SIR model, spreading rate and ignoring rate, indicates that the loss of profit will be less with the increasing of two parameters.
Keywords: pricing; small world network; rumor spreading; multi-agent modeling and simulation
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一种动态抑制无刷直流电机换相转矩脉动方法
夏鲲,谭媛,董斌,卢晶
(上海理工大学电气工程系,上海 200093)
摘要:提出了一种基于准Z源网络的动态抑制换相转矩脉动的方法,可以在无刷直流电机(BLDCM)转速调整过程中动态抑制转矩脉动。考虑电机绕组相电阻,建立了系统的数学模型,通过前置的准Z源网络,当电机转速及负载发生改变时,实时在线计算并调节换相电压Uup和换相时间tup以达到动态抑制转矩脉动的效果。在MATLAB/Simulink环境下完成了基于准Z源网络的动态抑制无刷直流电机换相转矩脉动仿真模型,通过实验平台验证了该方法的可行性。
关键词:无刷直流电机;换相转矩脉动;准Z源网络;动态抑制
中图分类号:TM315????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0543-08
DOI: 10.16182/j.issn1004731x.joss.201802022
Dynamic Suppression Method for Commutation Torque Ripple of Brushless DC Motors
Xia Kun, Tan Yuan, Dong Bin, Lu Jing
(Department of Electrical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)
Abstract: A dynamic suppression method for commutation torque ripple by employing a quasi-Z-source network was proposed, which reduced the torque ripple dynamically during the speed adjustment process in brushless DC motors (BLDCM). The phase resistance was taken into consideration and the mathematics model for the system was established. To suppress the commutation torque ripples timely and effectively, Uup and tup needed to be adjusted dynamically through the quasi-Z-source network while the speed and load changed. A simulation model to dynamically suppress the commutation torque ripple in BLDCM based on quasi-Z-source network was established by MATLAB/Simulink, and the feasibility was validated by experiments.
Keywords: Brushless DC motor; commutation torque ripple; quasi-Z-source network; dynamic suppression
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基于熵的航空发动机压气机失速与喘振仿真
皮骏,邱永超,胡智伟,武威
(中国民航大学通用航空学院,天津 300300)
摘要:采用NASA Rotor37模型并用CFX仿真软件模拟压气机从稳定工作状态到失速与喘振的非稳定工作状态的转变过程,用热力学熵和样本熵的相关理论对这一过程进行分析研究。以实现为压气机失速与喘振的故障诊断提供依据。通过分析,发现平均比熵值和等熵效率这两个热力学熵参数的变化情况在发生失速时出现异常;由机匣处静压序列信号计算所得的样本熵值在近失速点附近达到最小值。这些结果可为压气机失速与喘振的故障诊断提供重要依据。
关键词:压气机;热力学熵;样本熵;失速;喘振;故障诊断
中图分类号:TP391.9 ??????文献标识码:A?????? 文章编号:1004-731X (2018) 02-0551-09
DOI: 10.16182/j.issn1004731x.joss.201802023
Simulation of Surge and Stall for Aero Engine Compressor Based on Entropy
Pi Jun, Qiu Yongchao, Hu Zhiwei, Wu Wei
(General Aviation College, Civil Aviation University of China, Tianjin 300300, China)
Abstract: The mature model NASA Rotor37 is used to simulate the transition of the compressor’s operation from the steady state to the non-steady state of stall and surge using the simulation software CFX. The transition is analyzed and researched based on the theory of thermodynamics entropy and sample entropy to provide a basis for the fault diagnosis of stall and surge. The two thermodynamic entropy parameters of average specific entropy value and the isentropic efficiency are found by the analysis changing abnormally in the event of stall. The values of the sample entropy obtained by calculation using the static pressure sequence signal at the receiver reach the minimum near the operation point of stall. The goal of providing an important basis for the fault diagnosis of the compressor stall and surge is achieved.
Keywords: compressor; thermodynamic entropy; sample entropy; stall; surge; fault diagnosis
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铬渣渗滤液中六价铬在地下水中迁移模拟
刘玲,肖利萍,李喜林
(辽宁工程技术大学土木工程学院,辽宁阜新 123000
摘要:以沈阳铬渣堆场为研究对象,进行静态吸附实验和动态土柱实验,分析铬渣渗滤液中Cr()在地下水系统中的吸附特征和运移规律,建立Cr()在地下水系统中运移的耦合动力学数学模型,运用Visual Modflow软件模拟了铬渣堆场采取防渗措施前40年和防渗后60年地下水污染情况及Cr()运移情况,结合现场地下水监测数据进行了可靠性验证。结果表明,Cr(Ⅵ)浓度变化趋势及模拟值与监测结果基本吻合,从而验证了模型的可靠性和实用性。
关键词:铬渣渗滤液;土柱实验;数值模拟;耦合模型;地下水污染
中图分类号:P641.2????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0560-09
DOI: 10.16182/j.issn1004731x.joss.201802024
Simulation of Migration of Hexavalent Chromium in Groundwater
Liu Ling, Xiao Liping, Li Xilin
(College of Architecture and Engineering, Liaoning Technical University, Fuxin 123000, China)
Abstract: Taking chromite ore processing residue site in Shenyang city of Liaoning province as a research object, the static adsorption experiment and the dynamic soil column experiment were carried out, and the adsorption characteristics and the migration law for hexavalent chromium of chromite ore processing residue leachate were analyzed in the groundwater system. A coupled dynamic mathematical model was developed for simulating hexavalent chromium migration in the groundwater system. Numerical simulation of hexavalent chromium migration in groundwater for 40 years before the anti-seepage measure and for 60 years after the anti-seepage measure was completed by using Visual Modflow software. The field groundwater monitoring data of water quality was used to provide a quantitative verification. The results indicate that numerical simulation results of hexavalent chromium concentration agree with the monitoring data more or less, which verifies the model is reliable and practical.
Keywords: chromite ore processing residue leachate; soil column experiment; numerical simulation; coupled model; groundwater pollution
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基于VMDWigner-Ville分布的局放信号时频分析
贾亚飞,朱永利,王刘旺
(新能源电力系统国家重点实验室(华北电力大学),保定 071003)
摘要:为分析高压电器设备局放信号基于时域和频域的联合特性,提出了一种基于变分模态分解(Variational Mode DecompositionVMD)Wigner-Ville分布(VMD-WVD)的局放信号的联合时频分析方法,有效解决了Wigner-Ville分布中交叉项干扰问题。对局放信号进行VMD分解,得到若干单一成分的模态分量;分别计算各模态分量的Wigner-Ville分布,将结果线性叠加得到局放信号的Wigner-Ville分布。采用该方法对仿真和实测放电信号进行分析,实验结果表明该方法既能有效抑制Wigner-Ville分布的交叉项,又能保证较高的能量聚集性和很好的时频分辨率。
关键词:局部放电;Wigner-Ville分布;变分模态分解;时频分析
中图分类号:TM85????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0569-10
DOI: 10.16182/j.issn1004731x.joss.201802025
Time-frequency Analysis of Partial Discharge Signal
Based on VMD and Wigner-Ville Distribution
Jia Yafei, Zhu Yongli, Wang Liuwang
(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources 2ztag8879环亚手机|首页主页
?(North China Electric Power University), Baoding 071003, China)
Abstract: To effectively analyze the time-frequency characteristics of partial discharge signals of high voltage electrical equipment, a novel time-frequency analysis method based on variational mode decomposition (VMD) and Wigner-Ville distribution (VMD-WVD) was proposed, which effectively solves the problem of cross term interference in the Wigner-Ville distribution method. The known partial discharge signals were decomposed by VMD and the mode components were extracted. These Wigner-Ville distributions of mode components were computed and the Wigner-Ville of each component signal was added linearly to reconstruct the Wigner-Ville of the original signal. The proposed method was applied to analyze simulation signals and measured partial discharge signal. The time-frequency results of the proposed method effectively restrain the cross terms of Wigner-Ville distribution, and guarantee a high energy aggregation and good time-frequency resolution. Its merit of proposed method shows that VMD-WVD is an effective time-frequency distribution for analyzing partial discharge signals.
Keywords: partial discharge; Wigner-Ville distribution; variational mode decomposition; time frequency analysis
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扭力冲击器的动力特性研究
田家林1,2,杜凡1,朱永豪3,付传红4
1.西南石油大学机电工程学院,四川成都 6105002.西南交通大学机械工程学院,四川成都 6100312ztag8879环亚手机|首页主页
3.
四川华丰企业集团有限公司,四川绵阳 6210004.山东科瑞石油装备有限公司,山东东营 257000
摘要:针对钻井过程中,某些地层可钻性差,机械钻速低的情况,作者提出一种能提供周向扭矩的扭力冲击器。根据扭力冲击器的结构、工作原理和工作情况,建立其动力学模型,并得出扭力冲击器的碰撞频率、液压锤压缩量、扭矩与入口压强、入口流量之间的变化关系。通过实验测试与算例计算进行对比,验证了计算方法的准确性与可靠性。研究结果表明:当入口压强恒定时,碰撞频率、液压锤压缩量、扭矩与入口流量呈反比;当入口流量恒定时,碰撞频率、液压锤压缩量、扭矩与入口压强呈正比
关键词:冲击器;扭矩;振动;压强;频率
中图分类号:TE92???? ??文献标识码:A?????? 文章编号:1004-731X (2018) 02-0579-08
DOI: 10.16182/j.issn1004731x.joss.201802026
Dynamic Characteristics Research of Torsional Vibration Generator
Tian Jialin1,2, Du Fan1, Zhu Yonghao3, Fu chuanhong4
(1.School of Mechanical Engineering, Southwest Petroleum University, Chengdu 610500, China;2ztag8879环亚手机|首页主页
2.School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China; 3.Sichuan huafeng enterprise group Co., LTD, Mianyang 621000, China;4.Shandong kerui petroleum equipment Co., LTD, Dongying 257000, China;)
Abstract: Aiming at poor drill ability and low rate of penetration during the drilling process, a torsional vibration generator is presented. The structure and the operational principle of the torsional vibration generator are analyzed according to the torsional theory. The relationships among the collision frequencythe amount of hydraulic hammer compression, the torque, the inlet pressure, and inlet flow are obtained on the basis of its dynamic model, which is established in light of the actual working condition. Compared with the example calculation, the experimental test verifies the accuracy and reliability of calculation method. The research results show that when the inlet pressure keeps constant, the collision frequency, the amount of hydraulic hammer compression, and the torque are inversely proportional to the inlet flow; while when the inlet flow is constant, the collision frequency, the amount of hydraulic hammer compression, and the torque are proportional to the inlet pressure.
Keywords: torsional vibration generator; torque; vibration; pressure; frequency
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行鸿彦1,2,卢春霞1,2,张强1,2
1.南京信息工程大学,气象灾害预报预警与评估协同创新中心,南京 2100442ztag8879环亚手机|首页主页
2.
南京信息工程大学,江苏省气象探测与信息处理重点实验室,南京 210044
摘要:针对传统随机共振方法检测微弱信号精度低的问题,把全局版人工鱼群算法与随机共振算法相结合,提出了一种基于全局人工鱼群算法的自适应随机共振微弱信号检测方法。该方法把随机共振输出信噪比增益作为全局人工鱼群算法的适应度函数,将微弱信号检测问题转化为多参数并行寻优问题。分别在LangevinDuffing系统中进行仿真实验及其寻优结果对比研究,仿真结果表明本文所提方法高效可行,相比较 Langevin系统,Duffing自适应随机共振系统体现更高的微弱信号检测精度和检测性能。引入控制频率,将Duffing自适应随机共振应用于多频大信号的检测,拓宽了随机共振的应用范围。
关键词:自适应;随机共振;Duffing振子;全局人工鱼群算法;微弱信号检测
中图分类号:N945.15;TP273?? ???文献标识码:A???? 文章编号:1004-731X (2018) 02-0587-08
DOI: 10.16182/j.issn1004731x.joss.201802027
Adaptive Stochastic Resonance Weak Signal Detection
Xing Hongyan1,2,Lu Chunxia1,2, Zhang Qiang1,2
(1.Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China; 2.Key Laboratory ofMeteorologicalObservation and Information Processingof Jiangsu Province , Nanjing University of Information Science & Technology, Nanjing 210044, China)
Abstract:As traditional stochastic resonance methodhas low accuracy problem for weak signal detection,a new adaptive stochastic resonanceweak signal detection method based on global artificial fish swarm algorithm (GAFSA) is proposed, in which the global artificial fish swarm algorithm is combined with stochastic resonance. The output signal-to-noise ratio gain of stochastic resonance system is used as fitness function of the global artificial fish swarm algorithm, and the weak signal detection problem is transformed into multi-parameter parallel optimization problem, which formsan adaptive system to detect weak feature signal. The simulation experiments and the comparisons of optimization results are carried out respectively in the Langevin and Duffing systems. Simulation results show thatthe proposed method is efficient and feasible. Compared to Langevin system, Duffing adaptive stochastic resonance system has higher detection accuracy and performance of the weak signal detection. Duffing optimal system is applied to the multi-frequency large signal detection, which widens the application range of stochastic resonance.
Keywords: self-adaption; stochastic resonance; Duffing oscillator; global artificial fish swarm algorithm; weak signal detection
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基于融合相似度的制粉系统健康预警及故障诊断
焦嵩鸣
(华北电力大学自动化系,河北保定 071003)
摘要:反映火电厂制粉系统健康状况的参数众多,同时监视这些参数难度较大且故障诊断过程过于复杂。为此提出了一种适合工业系统的基于融合相似度的健康预警实现方法和故障诊断算法。此融合相似度由一种新型的基于主成分分析的加权马氏距离和加权正弦相似度融合而成。基于该方法形成的诊断系统无需大规模样本库或记忆矩阵并具有自学习能力,算法运行中可自行修正计算融合相似度所需要的中心参数仿真结果表明,该方法结构简单可靠,诊断正确率高,实时性强,适合在线运用。
关键词:故障诊断;相似度;制粉系统;健康预警;马氏距离
中图分类号:TP206+.3;TP277????? 文献标识码:A????? 文章编号:1004-731X (2018) 02-0595-10
DOI: 10.16182/j.issn1004731x.joss.201802028
Health Warning and Fault Diagnosisof Pulverizing System Based on Syncretic Similarity
JiaoSongming
(Department of Automation, North China Electric Power University, Baoding 071003, China)
Abstract: It is an arduous task to know health statusof a pulverizing system in power plant by monitoring these parameters simultaneously and the fault diagnosing process is complicated.An approach based on syncretic similarity is presented which is suitable for industrial system’s health warning and fault diagnosis.The syncretic similarity couples anew type of weighted mahalanobis distance based on principal component analysiswith an improved weighted sine similarity. The approachhas self-learning ability.Central parameterswhich are used to compute similarity can be modified along with the operation process.Simulation resultsshow that the method is suitable for online application because of its high accuracy, fast classification, high real-time performance, reliabilityand simple structure.
Keywords: fault diagnosis; similarity; pulverizing system; health warning; mahalanobis distance
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无刷双馈发电机在电网故障时的动态响应分析
李冰1,2,刘石1,龙腾3,段琦玮1
1. 华北电力大学能源动力与机械工程学院,北京 1022062.华北电力大学科技学院,河北保定 0710002ztag8879环亚手机|首页主页
3. Department of Engineering,University of Cambridge, Cambridge UK
摘要:无刷双馈发电机由于取消了电刷与滑环,提高了可靠性。风力发电机组不间断运行的关键是风力发电机的低电压穿越能力,为了便于对无刷双馈发电机低电压穿越技术进行研究,根据无刷双馈发电机的数学模型分析了电网在发生对称故障与不对称故障时,功率绕组磁链变化以及控制绕组电压变化的动态过程,对不同电网故障时控制绕组瞬时电压值进行了计算,并对电网故障时的动态响应过程进行了仿真,为无刷双馈发电机低电压穿越保护电路的参数设计及控制策略的制定提供了理论依据。
关键词:无刷双馈风力发电机;低电压穿越;电网故障;动态响应
中图分类号:TM315????? 文献标识码:A????? 文章编号:1004-731X (2018) 02-0605-09
DOI: 10.16182/j.issn1004731x.joss.201802009
Dynamic Response Analysis of Brushless Doubly-Fed Induction Generator under Grid Fault
Li Bing1,2, Liu Shi1, Long Teng3,Duan Qiwei1
(1. School of EnergyPower and Mechanical Engineering, North China Electric Power University, Beijing 102206,China;2ztag8879环亚手机|首页主页
2. North China Electric Power University Science & Technology College, Baoding 071000, China;2ztag8879环亚手机|首页主页
3.
Department of Engineering,University of Cambridge,Cambridge, UK)
Abstract: Brushless doubly-fed induction generator has good system reliability due to the cancellation of the brush and slip ringcompared with DFIG.The low voltage ride-through (LVRT) capability is the key to realize the uninterrupted operation for the wind power generation.In this paper, the LVRT issuefor different grid faults is studied. The dynamic responses of the change of power winding magnetic linkage and the change of control winding voltage are analyzed when grid fault occurswith symmetrical fault and unsymmetrical fault respectively based on mathematical model of BDFIG. Theinstantaneous voltages of control winding are calculated and the dynamic responsesare simulated under different grid faults. The study work in this paper provides a theoretical basis for designing circuit parameters and control strategy for LVRT protection.
Keywords: brushless doubly-fed induction generator; LVRT; grid fault; dynamic response
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基于Petri网的锂电池故障诊断系统
高迪驹,兰熙,沈爱弟
(上海海事大学航运技术与控制工程交通部重点实验室,上海 201306)
摘要:为了提高锂电池故障诊断系统的效率,提出一种基于Petri网的锂电池故障诊断系统。通过对锂电池组在充放电过程中会出现单体电池间电压不一致的故障进行分析,建立了基于Petri网的故障诊断模型。该系统能够根据传感器检测到的异常信号,诊断出相应的故障原因。利用state flow根据所建立的故障诊断模型绘制出相应的控制逻辑图,并用simulink进行仿真。模型验证和仿真的结果表明该诊断系统对导致电压不一致的故障原因能够给出更加细致的诊断结果,从而提高电池管理系统的工作效率。
关键词:Petri网;在线故障诊断;锂电池;state flow
中图分类号:TP306+.3????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0614-08
DOI: 10.16182/j.issn1004731x.joss.201802030
Fault Diagnosis System of Lithium Battery Based on Petri Net
Gao Diju, Lan Xi, Shen Aidi
(Key Laboratory Marine Technology & Control Engineering Ministry Communications, Shanghai Maritime University, Shanghai 201306, China)
Abstract: To improve the efficiency of lithium battery fault diagnosis system, a fault diagnosis system based on Petri net is proposed. The fault diagnosis model based on Petri net came from the analysis of the inconsistent voltages between single cell in lithium batteries during charge and discharge. The system can find the fault causesaccording to abnormal signals detected by sensor. The control logic diagram of the fault diagnosis model is established by state flow, and simulated by simulink. The results of model verification and simulation show that the cause for inconsistent voltage is distinguished meticulously by the fault diagnosis system; thereby the efficiency of the battery management system is improved.
Keywords: petri net; online fault diagnosis; lithium battery; state flow
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一种改进CPLS算法及其在过程监控中的应用
李庆华,潘丰,赵忠盖
(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)
摘要:CPLS(Concurrent PLS)对PLS分解的过程变量和质量变量的残差和主元进行进一步的提取,从而将变量投影到五个子空间,并由此构建了对过程变量和质量变量信息的完整监控框架。但是,在CPLS中,假设残差为可以求解的确定值,而残差本质上为随机分布量。因此,采用随机模型及其基于随机模型的监控更能反应残差的特性。在基于CPLS的过程监控中,采用因子分析(FA)算法对PLS中的残差进行分析,建立了基于FA的改进CPLS模型,并构建了符合正态分布假设条件的监控指标,提高了监控指标与建模指标的一致性。
关键词:CPLS;因子分析;期望最大化(EM)算法;过程监控
中图分类号:TP391.9????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0622-07
DOI: 10.16182/j.issn1004731x.joss.201802031
Improved CPLS Algorithm and Its Application in Process Monitoring
Li Qinghua, Pan Feng, Zhao Zhonggai
(Key Laboratory of Advanced Process Control for Light Industry Ministry of Education, Jiangnan University, Wuxi 214122, China)
Abstract: Concurrent PLS (CPLS) further extracts information from the residuals of input variables and quality variables drawn by PLS, thus the raw data are projected into five subspaces. The process monitoring based CPLS provides a whole framework for the monitoring of input variables and quality variables. The model for residuals is developed by a deterministic manner while the residuals are inherently stochastic; therefore a probabilistic model is more proper for describing their features. This paper introduces factor analysis (FA) into CPLS, in which FA instead of PCA is used to analyze the residuals to develop the improved CPLS model, and the monitoring indices for checking the validity of variables satisfying Gaussian distribution are built to improve the consistence between the modeling objective and the monitoring indices.
Keywords: CPLS; factor analysis; expectation maximization (EM) algorithm; process monitoring
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基于CFD压裂泵泵阀结构冲蚀流场研究
莫丽1,王晓兵1,王军2,张光才1
(1.西南石油大学机电工程学院,四川成都6105002.宝鸡石油机械有限责任公司,陕西宝鸡 721000)
摘要:针对压裂泵泵阀冲蚀磨损严重的特点,利用CFD软件对泵阀阀隙流域进行流场仿真计算,得到不同泵阀升程、冲次凡尔胶皮突出高度h1凡尔胶皮接触长度L的流场分布状态。结合压裂泵泵阀的失效机理,通过对计算结果中的流场状态分析表明:小升程下,阀隙流速最大;高冲次会提高流速和增大泵阀滞后高度;h1的值越大,阀盘对阀座冲击越小,但阀隙最大流速增大,阀隙过流面积减小;L的值越小,阀盘对阀座冲击越大,但流速减小,且有利于减小泵阀的冲蚀磨损
关键词:压裂泵;泵阀;冲蚀失效;仿真计算
中图分类号:TE934????? 文献标识码:A?????? 文章编号:1004-731X (2017) 08-0629-07
DOI: 10.16182/j.issn1004731x.joss.201708032
CFD-based Research on the Erosion of the Fracturing Pump valve structure
Mo Li1, Wang Xiaobing1, Wang Jun2, Zhuang Guangcai1
(1. College of Mechanical and Electrical Engineering, Southwest Petroleum University, Chengdu 610500, China;2ztag8879环亚手机|首页主页
2. Cnpc Baoji Oilfield Machinery CO., LTD, Baoji 721000, China)
Abstract: In view of the characteristic of severe erosion and abrasion in the fracturing pump valve, CFD-based erosion and failure is simulated and computed. The distributed rule of the pump valve lift, times of stroke, the height of the seal and the sealing contact length at a certain moment are shown. By analyzing the characteristic of the flow field from the simulated result and the failure mechanism of the fracturing pump valve, it is concluded that the lift is smaller, the greater is the flow velocity, the high times of stroke will increase the flow rate and the lag height of the pump valve, when the valve of h1 becomes bigger, although the force of the valve disk shocking the seat is smaller, the velocity of the valve becomes even bigger and the area is reducedwhen the valve of L becomes smaller, although the force of the valve disk shocking the seat is greater, the velocity of the valve becomes even smaller and the failure is reduced.
Keywords: thefracturing pump; pump valve; erosion and failure; simulation and computation
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基于免疫粒子群算法的微电网经济运行优化
高聪,吴定会,潘庭龙,纪志成
(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)
摘要:微电网经济运行优化问题的求解常常伴随着多约束、非连续和多发电机组等问题的制约。针对该问题,提出一种免疫粒子群算法,算法将人工免疫系统引入到粒子群算法中,既能保证算法本身的收敛性,也能在免疫环节中使粒子较为均匀地分布于解空间内,因而保证了算法的全局寻优能力和鲁棒性。将该算法分别用于求解微电网的孤岛、并网两种运行两种模型实例,并与其他三种算法进行比较,实验结果表明该算法可以有效求解微电网经济优化问题。
关键词:免疫粒子群算法;经济运行优化;微电网模型;微电网运行方式;免疫机制
中图分类号:TP391.9 ???????文献标识码:A??????? 文章编号:1004-731X (2018) 02-0636-11
DOI: 10.16182/j.issn1004731x.joss.201802033
Optimal Economic Dispatch of Microgrid Based on Immune Particle Swarm 2ztag8879环亚手机|首页主页
Optimization Algorithm
Gao Cong, Wu Dinghui, Pan Tinglong, Ji Zhicheng
(Key Laboratory of Advanced Process Control for Light Industry, Jiangnan University, Wuxi 214122, China)
Abstract: Some restrictions are accompanied when solving the optimal economic dispatch of microgrid, such as multi-constraints, discontinuities and multi-generators. An immune particle swarm optimization (IMPSO) algorithm is proposed, which introduces the artificial immune system into particle swarm optimization (PSO) algorithm and can ensure the PSO convergence as well as exerting the immune mechanism to make the particles uniformly distributed in solution plane. The algorithm possesses the virtues like global probe and robustness and is used to solve two operating modes of island and grid- connected in microgrid respectively. The experimental results show that the IMPSO provides a feasible and advanced method in comparison with other three intelligent algorithms.
Keywords: immune particle swarm optimization; economic dispatch; microgrid model; microgrid operation mode; immune mechanism
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谐壁厚螺杆钻具橡胶衬套线型设计与仿真分析
童华,陈国银,祝效华
(西南石油大学机电工程学院,四川成都 610500)
摘要:针对螺杆马达定子橡胶衬套易发生疲劳失效,导致马达工作效率降低,制约钻进速度的问题。建立马达定转子数值模型,分析橡胶衬套工作时的热力耦合问题,并计算橡胶衬套在不同工况及过盈量下的位移、温度及应力分布情况。基于橡胶衬套结构,提出一种新型谐壁厚橡胶衬套结构,并对其进行有限元模拟计算。结果表明,谐壁厚橡胶衬套不仅具有等壁厚橡胶衬套的优点,而且抗磨损寿命及疲劳强度均高于等壁厚,位移分布也较等壁厚均匀,可保证马达的工作稳定性和效率,提高钻进速度
关键词:橡胶衬套;疲劳失效;单向解耦;有限元模拟
中图分类号:TE924 ???????文献标识码:A?????? ?文章编号:1004-731X (2018) 02-0647-07
DOI: 10.16182/j.issn1004731x.joss.201802034
Linear Design and Simulation Analysis for Harmonic-distance Rubber Bushing of PDM
Tong Hua, Chen Guoyin, Zhu Xiaohua
(School of Mechanical Engineering, Southwest Petroleum University, Chengdu 610500, China)
Abstract: For the problem of fatigue failure in stator rubber bushing of PDM, which reduces motor efficiency and restricts the rate of penetration, a numerical model of PDM’s stator-rotor is established. The thermal coupling problem of rubber bushing working in a well is analyzed. The displacement, temperature and stress distribution of rubber bushing under different conditions and interferences are calculated. A new harmonic-distance rubber bushing was designed based on the structure of rubber bushing, and a finite element simulation on it is taken. The research indicates that the harmonic-distance rubber bushing not only has the advantage of equal-distance rubber bushing, but also has higher life of fatigue and anti-wear than the equal-distance rubber bushing; the displacement distribution is more uniform than the equal-distance rubber bushing; the new structure can guarantee the stability and efficiency of PDM stator and increase the rate of penetration.
Keywords: rubber bushing; fatigue failure; one direction decoupling; finite element simulation
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区间化随机时延的网络控制系统建模与控制
刘义才1,2,刘斌1,石安伟1
(1. 武汉科技大学信息科学与工程学院,武汉 4300812. 武汉商学院机电工程与汽车服务学院,武汉430056)
摘要:针对一类带有从传感器到控制器和控制器到执行器的双边随机时延的网络控制系统,首先通过将最大可能的时延值划分为多个等分区间,然后根据时延在各个区间的跳变特性将其描述为一个基于有限状态Markov链的随机过程,并建立了网络控制系统的参数不确定性离散时间跳变模型;同时考虑了在Markov链转移概率矩阵中的部分元素未知的条件下,基于Lyapunov稳定性理论并采用随机理论的分析方法,设计了满足系统稳定性要求的时变控制器。最后通过数值算例仿真验证了该方法的有效性。
关键词:网络控制系统;随机时延;随机稳定性;时变控制器;转移概率矩阵
中图分类号:TP273???????文献标识码:A???? ????文章编号:1004-731X (2018) 02-0654-10
DOI: 10.16182/j.issn1004731x.joss.201802035
Modeling and Control of Networked Control Systems with Partitioned Random Delay
Liu Yicai1,2, Liu Bin1, Shi Anwei1
(1. Institute of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; 2ztag8879环亚手机|首页主页
2. Department of Mechatronics Engineering and Automotive Services, Wuhan Business University, Wuhan 430056, China)
Abstract:As for a class of networked control systems which have the bilateral random delay of sensor-to- controller and controller-to-actuator, the networked control systems were modeled as discrete-time jump systems with uncertain parameters by firstly partitioning the maximum possible delay value into a plurality of equal intervals, and then describing it as a stochastic process of a finite state Markov chain according to the jump characteristics of the delay in each interval. Considering the condition that the elements of the transition probability matrix of the Markov chain were partly unknown, the time-varying controller meeting the requirement of system stability was designed based on the theory of Lyapunov stability and stochastic process. Lastly, the simulation examples illustrate the effectiveness of the proposed method.
Keywords: networked control systems; random delay; stochastic stability; time-varying controller; transition probability matrix
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海洋钻井平台发电机组的仿真研究
王唯一,肖磊,林德俊
(上海大学机电工程与自动化学院, 上海 200072
摘要:海洋钻井平台具有工作环境较差、运行工况复杂和设备种类繁多等特点,因而对平台电力系统的实体研究难度大、成本高。以第六代半潜式海洋石油钻井平台为背景,构建了钻井平台8台柴油机组仿真模型,运用Matlab/Simulink进行了发电机组并网运行、大负载运行和电网故障等仿真研究。仿真研究跟踪了发电机的端电压、转速、输出功率以及电网电压、电流等参数的动态变化过程,对海洋钻井平台电力系统的参数整定和安全策略的选取提供了一定的参考价值。
关键词:电力系统;发电机;钻井平台;Simulink
中图分类号:TP273?? ??????文献标识码:A????????文章编号:1004-731X (2018) 02-0664-08
DOI: 10.16182/j.issn1004731x.joss.201802036
Simulation Research on Generator Sets of Offshore Drilling Platform
Wang Weiyi, Xiao Lei, Lin Dejun
(School of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200072, China)
Abstract: Due to the poor working environment, the complex running conditions and the variety of facilities on offshore drilling platform, the entity experimental research on power system becomes hard and expensive. Based on the background of the offshore drilling platform, the model of eight generator sets is implemented. The simulations of generator sets interconnecting, operation with large load, as well as electric power system’s fault are done. The dynamic processes of each generator sets’ terminal voltage, speed and output power and power grid voltage are shown, which have a certain reference value for the parameter settings and the selection of security strategy of the power system in offshore drilling platform.
Keywords: power system; generator; marine drilling platform; Simulink
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双重遗忘卡尔曼滤波PMLSM无位置传感控制研究
朱军,李香君,付融冰,吴宇航,田淼
(河南理工大学电气工程与自动化学院,河南焦作 454000)
摘要:针对EKF估计PMLSM位置存在模型不精确、噪声统计特性不确定时估计精度不高,且有可能导致滤波发散的问题,提出一种双重遗忘卡尔曼滤波法它是在EKF的基础上引入自适应渐消因子,实现第一重遗忘,引入Sage-Husa自适应滤波法,实现第二重遗忘。实验表明:该方法不论是同步速度还是负载突变,均按正弦规律递减,负载突变前、后速度稳定误差最大值分别为0.469%、0.943%,最终将稳定在0.167%附近,跟踪效果随仿真时间的加长而更好。
关键词:PMLSM;卡尔曼滤波;自适应渐消因子;Sage-Husa自适应滤波;双重遗忘卡尔曼滤波
中图分类号:TP391.9 ??????文献标识码:A?????? 文章编号:1004-731X (2018) 02-0672-07
DOI: 10.16182/j.issn1004731x.joss.201802037
PMLSM without Position Sensing Control of Double ForgettingKalman Filter
Zhu Jun, Li Xiangjun, Fu Rongbing, Wu Yuhang, Tian Miao
(School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China)
Abstract: UsingextendedKalmanfilter (EKF) to estimate the position of permanent magnet linear synchronous motor(PMLSM), the model is not accurate, the noise properties areuncertain,and may lead to the problem of filtering divergence.Adouble forgetting Kalman filter (DFKF) method was proposed. Adaptive fading factor on the basisof EKF was introduced to achieve the first forgetting,andthe Sage-Husa adaptive filter algorithm was introduced to realize the second forgetting. The experiments show that DFKF diminishesaccording to the law of sineregardless synchronous speed change or load mutation;the stable error is 0.469% or 0.943% before or after the load mutation; the final error stabilizes near 0.167%;the effects will be better with the longer time of the simulation.
Keywords:PMLSM; Kalmanfilter; adaptive fading factor; Sage-Husa adaptive filter; DFKF
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基于AHP和熵值模型的军事竞赛研究与仿真
鞠儒生,朱正秋,曾云秀,王瑞贤,邱晓刚
(国防科技大学系统工程学院,湖南长沙 410073)
摘要:针对近来在军事院校间热门的综合性军事竞赛进行深入研究,不同于以往相关课题的定性分析方法,本文通过建立AHP主成分分析模型,分析了综合性军事竞赛中各个训练科目对于学员各项能力素质指标以及综合能力提升的影响,之后运用大量数据通过熵值模型分析了AHP模型的合理性,最后在文中将这些影响值作为仿真模型的输入,建立了基于Arena软件的离散事件模型,模拟了综合性军事竞赛前训练的整个过程,进一步验证了研究结果。本文的研究成果对于提出和制定更加合理的训练方案有着很好的指导意义。
关键词:AHP模型;熵值模型;离散事件仿真;Arena软件
中图分类号:TP391.9????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0679-12
DOI: 10.16182/j.issn1004731x.joss.201802038
Research and Simulation for Military Contests Based on AHP and Entropy Models
Ju Rusheng, Zhu Zhengqiu, Zeng Yunxiu, Wang Ruixian, Qiu Xiaogang
(Institute of Systems Engineering National University of Defense Technology, Changsha 410073, China)
Abstract: The paper studiesthe comprehensive military contests which are held frequently among military universities. Different from the qualitative analysis methods before, an analytic hierarchy process model is set up to analyze the effects which training programs have on students. A great amount of data is put into the entropy model to analyze the rationality of AHP model. This paper also sets the effect value as the input data of the emulating model to simulate the whole exercise process before contests which can verify the results received from AHP and entropy models. Research findings are helpful for superior leaders to make more rational exercise schemes.
Keywords: AHP model; entropy model; discrete incident model; arena software
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基于干扰抑制的含齿隙伺服系统鲁棒控制方法
韩崇伟1,彭超2,石志翔1,李忠1
(1. 西北机电工程研究所,陕西咸阳 7120992. 电子科技大学,四川成都 611731)
摘要:研究了一种基于干扰抑制的鲁棒控制方法,该方法将齿隙看作外部干扰,利用干扰抑制补偿器减小齿隙对系统控制性能的影响;利用基于混合灵敏度的鲁棒反馈控制器提高系统对期望输出的跟踪控制精度和鲁棒性。在分析含齿隙伺服系统的结构、工作原理的基础上,建立了系统模型;给出了本文所研究控制方法的控制原理,以及鲁棒干扰抑制补偿器和基于混合灵敏度的鲁棒反馈控制器的设计方法; 通过仿真实验证明该控制方法能够有效地提高含齿隙伺服系统的动静态控制性能。
关键词:齿隙;伺服系统;干扰抑制;混合灵敏度
中图分类号:TP273????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0691-08
DOI: 10.16182/j.issn1004731x.joss.201802039
Disturbance Rejection Based Robust Control Approach for Servo System with Backlash
Han Chongwei1, Peng Chao2, Shi Zhixiang1, Li Zhong1
(1. Northwest Institute of Mechanical & Electrical Engineering, Xianyang 712099, China; 2ztag8879环亚手机|首页主页
2. School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China)
Abstract: With the rapid development of industry and science technology, the control performance requirements for servo system become higher and higher. Aiming at the servo system with backlash, a disturbance rejection based robust control approach is studied, which sees the backlash as external disturbance. It utilizes a disturbance rejection compensator to reduce the adverse effects caused by backlash, a mixed sensitivity based robust feedback controller to enhance the tracking control precision and robustness. The model of the servo system with backlash is built based on the analysis of system structure and work principle. The control principle, the robust disturbance rejection compensator and the mixed sensitivity based robust feedback controller design methods are presented. The simulation experiment results demonstrate the control approach can enhance the control performance of the servo system with backlash effectively.
Keywords: backlash; servo system; disturbance rejection; mixed sensitivity
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基于灰色层次属性模型的评估指标综合方法
孙向宇,晁涛,王松艳,马萍
(哈尔滨工业大学控制与仿真中心,哈尔滨 150080
摘要:层次分析法在无结构决策的应用中存在一致性判断复杂问题以及专家评价不客观的问题。针对以上问题,提出基于灰色分析方法与层次属性模型结合的新方法,将来自于相关研究领域内专家的给出的指标相对属性权重评价信息以层次属性模型方法进行群组分析处理,获取指标相对权重,应用灰色评价方法整合专家给出的指标评价信息,将获取的相对属性权向量与灰色权矩阵综合后投射到评分区间得到最终评价结果。所提出方法可以快速计算得到评价结果,相比传统方法更为客观且易于实现。
关键词:无结构决策;灰色评价法;层次属性模型;综合评价方法
中图分类号:TP391.9?????? 文献标识码:A?????????? 文章编号:1004-731X (2018) 02-0699-08
DOI: 10.16182/j.issn1004731x.joss.201802040
Synthetic EvaluationMethod Based on Grey Evaluation Method and
Analytic Hierarchy Model Theory
Sun Xiangyu, Chao Tao, Wang Songyan, Ma Ping
(Control and Simulation CenterHarbin Institute of Technology, Harbin 150080, China)
Abstract: To solve the problems that judging matrix is complex and evaluation information from experts is not always objective in Analytic Hierarchy Process (AHP) method during the unstructured decision making application, a new synthetic evaluationmethod based on grey evaluation method and analytic hierarchy model theory (AHM) isproposed. GroupAHM method is used to judge the relative weight between any two of indexes based on relative weight evaluation information from experts in the relevant research field and grey evaluation method is used to synthesize the index evaluation information from experts. Evaluation result is obtained by mapping synthesizing result of relative property weight vectors and grey weight matrixes to scoring range. The new method is more objective and realistic than original ones. Finally, the method was proven feasible with the help of examples about guidance and control system evaluation of vehicle.
Keywords: unstructured decision making; grey evaluation method; analytic hierarchy model; synthetic evaluating method
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交叉环单向循环搬运系统最优调度算法的研究
李军涛1,夏琨1,木濑2
(1. 上海海洋大学工程学院,上海2013062. 京都工艺纤维大学,日本京都 601-8585)
摘要:为了减少交叉环单向循环搬运系统的干涉并提高系统效率,着重研究了交叉环单向循环搬运系统中小车间干涉及调度优化问题,对两种基本调度算法(随机调度、顺序调度)进行干涉分析,提出了干涉发生情况下车辆调度的最优调度算法交换顺序调度算法不同的调度算法影响着小车间的干涉情况,进而影响了整个柔性制造系统的搬运效率。实验显示:交换顺序调度算法优于随机调度算法和顺序调度算法,既能减少了系统的干涉又提高了系统搬运效率,实现系统优化。
关键词:物料搬运系统;调度;交叉环;优化
中图分类号:TP391.9????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0707-07
DOI: 10.16182/j.issn1004731x.joss.201802041
Optimization of Scheduling Rule of Unidirectional Material Handling System 2ztag8879环亚手机|首页主页
with Short-cut
Li Juntao1, Xia Kun1, Kise Hiroshi2
(1. College of Engineering Science and Technology, Shanghai Ocean University Shanghai, 201306, China; 2ztag8879环亚手机|首页主页
2. Kyoto Institute of technology/Kyoto 601-8585, Japan)
Abstract: To decrease the interference and improve the performance of a unidirectional circulation-type material handling system on a single loop with a shortcut, the interference and scheduling problem between AGVs are studied. According to the actual situation of material handling system, the interferences of two scheduling rules (random rule and order rule) are analyzed. An optimal scheduling rule under the interference case—exchange order rule is proposed. Different scheduling rules have an influence on the interference between AGVs and then have an important effect on the efficiency of the whole system. Experiment results show that the exchange order (E-Order) rule is better than the random rule and the order rule, which can decrease congestion (interference time), improve the handling efficiency and achieve the optimal performance.
Keywords: material handling system; scheduling; short-cut; optimization
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基于信息密度贝叶斯算法的云平台入侵检测
杜晔,张田甜,黎妹红
(北京交通大学计算机与信息技术学院,北京 100044)
摘要:为更好实现对云平台入侵检测数据的分类处理,提升检测精度和性能,提出了一种基于信息密度的贝叶斯算法。构造完整的数据特征概率集合,通过引入信息熵来表示信息的不确定度,并定义了信息密度以描述信息不确定度分布状态。对算法的收敛性和时间复杂度进行了分析,并进行仿真实验,与已有技术相比,方法可有效减少数据信息损失和描述数据特征与数据类型的概率关系,能够准确将云平台入侵检测数据分类,具有较高的检测率和较低的误报率
关键词:云平台;入侵检测;数据特征;信息密度;贝叶斯算法
中图分类号:TP309.2??????? 文献标识码:A??????? 文章编号:1004-731X (2018) 02-0714-09
DOI: 10.16182/j.issn1004731x.joss.201802042
Information Density based Bayes Algorithm for Cloud Platform Intrusion Detection
Du Ye, Zhang Tiantian, Li Meihong
(School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China)
Abstract: For getting better data classification results of cloud platform intrusion detection, and improving the detection accuracy and performance, a Bayes algorithm based on information density was proposed. The complete probability of data characteristics was constructed, and the uncertainty of information was represented by information entropy. The information density was defined to describe the distribution of information uncertainty. The improved algorithm was introduced, and the convergence and time complexity were analyzed. The simulation experiment results show that the method can effectively reduce the data loss and exposethe relationship between data characteristics and data type, which can further classify the detection data of cloud platform accurately with high detection rate and low false positive rate.
Keywords: cloud platform; intrusion detection; data characteristics; information density; Bayes algorithm
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星光折射敏感器谱宽选择及探测能力分析
王献忠1,2,刘禹1,2,汤敏兰1,2,张丽敏1,2
(1.上海市空间智能控制技术重点实验室,上海 2011092. 上海航天控制技术研究所,上海 201109)
摘要:星光折射敏感器探测大气折射星光能力是目前较热门的一个工程问题。分析了色散、分子散射和臭氧吸收等引起的可见光和近红外谱段星光大气衰减系数;并基于谱宽对测量精度的影响和窄谱段探测等效视星等的分析来确定星光折射敏感器谱宽;基于信噪比SNR计算进行星光折射敏感器探测折射星光能力和探测概率估计。仿真结果给出了不同高度大气衰减等效视星等差和星光折射敏感器对不同大气高度和不同温度恒星的极限探测星等,对星光折射敏感器参数设计具有指导作用。
关键词:星光折射敏感器;大气密度;衰减系数;视亮度;红外视亮度;信噪比
中图分类号:TP206??????? 文献标识码:A??????? 文章编号:1004-731X (2018) 02-0722-09
DOI: 10.16182/j.issn1004731x.joss.201802043
SpectralWidth Selection and Detectability Analysis ofStarlight Refraction Sensor
Wang Xianzhong1,2, Liu Yu1,2, Tang Minlan1,2, Zhang Limin1,2
(1.Shanghai Key Laboratory of Aerospace Intelligent Control Technology, Shanghai 201109, China;
2. Shanghai Aerospace Control Technology Institute, Shanghai 201109, China)
Abstract: Aiming at the engineering problem of starlight refraction sensor’s ability fordetecting the starlight refracted in atmosphere, the atmospheric attenuation coefficient of the visible and near infrared stellar dueto dispersion, molecular scattering, ozone absorption and so on are analyzed, which determines starlight refraction sensor’s spectral width and the visual magnitude difference equivalent with narrow spectral detection.The starlight refraction sensor’s detection ability and detection probability are estimatedbased on signal to noise ratio calculation and SNRanalysis. The simulation results give the visual magnitude difference equivalent with the atmospheric attenuation to the different atmospheric altitude, and the limiting magnitude of the different temperature stellar in the different atmospheric altitude, which is helpful for the parameter design of starlight refraction sensor.
Keywords: starlight refraction sensor; atmosphere density; attenuation coefficient; apparent luminance; lnfrared luminance; SNR
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电动汽车换电站运营效益建模与分析
孙伟卿1,陈顺风1,刘通1,吴小东2
(1. 上海理工大学光电信息与计算机工程学院,上海 2000932. 上海电器科学研究院,上海 200063)
摘要:电动汽车换电站运营方通过优化建模追求效益的最大化,但换电需求量等运营因素随时可能发生变化,这些因素的改变会对换电站最终的收益造成不同程度的影响。建立电动汽车换电站运营效益最大化的线性模型,通过灵敏度分析得出:对换电站而言,影响换电站效益的敏感参数主要为充换电服务费、电池折旧费、电网电价;对电网而言,影响换电站削峰填谷的敏感参数则是换电站内的总电池数和充电格位数。分析换电站内部设施投资的最优数量。此模型的建立及其分析能够为换电站商业化运营提供决策依据。
关键词:电动汽车;换电站;线性优化;灵敏度分析;敏感参数
中图分类号:TM910.6 ??????文献标识码:A?????? 文章编号:1004-731X (2018) 02-0731-09
DOI: 10.16182/j.issn1004731x.joss.201802044
Modeling and Analysis of Operation Benefit for Electric Vehicle Battery Swapping Station
Sun Weiqing1, Chen Shunfeng1, Liu Tong1, Wu Xiaodong2
(1. School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;2ztag8879环亚手机|首页主页
2. Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd., Shanghai 200063, China)
Abstract: The operators of electric vehicle battery swapping stations (EVBSS) seek the maximization of benefit by optimizing the modeling. The changes of operating parameters such as battery swapping demand could affect EVBSS benefits. A linear programming model for EVBSS maximum benefit is established. Based on the sensitivity analysis, it is found that the EVBSS benefit is mainly affected by operating parameters such as battery swapping price, battery depreciation cost, electricity price, etc. For power grid, the sensitivity parameters of peak load shifting are charging-pile number and battery number. The optimal quantity of EVBSS internal infrastructure investment is analyzed. The establishment and analysis of the model can provide the decision-making basis for commercial operation of EVBSS.
Keywords: electric vehicle; battery swapping station; linear optimization; sensitivity analysis; sensitive parameter
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基于联合仿真的风力发电机试验台系统研究
宋中越,甄冬,张浩,师占群,马姣姣
(河北工业大学机械工程学院,天津 300130)
摘要:由于搭建风机试验台具有无法准确模拟风力驱动以及实验过程很难计入环境干扰因素影响的问题,导致实验模拟结果与实际结果有较大误差。采用联合仿真的方式建立虚拟试验台,采用概率统计分布拟合与组合风速模型结合的方式进行风速优化模拟,经转换后作为试验台的动力输入,并考虑相关接触力参数设置及工况环境建立故障模型,生成结果并分析,验证了仿真结果更接近真实情况,解决了风力发电机齿轮箱工况因素模拟困难的问题,并对其可信度进行了论证,验证了系统的有效性。
关键词:风电机组齿轮箱故障;风速模拟;联合仿真;虚拟实验台;可信度
中图分类号:TN9???????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0740-07
DOI: 10.16182/j.issn1004731x.joss.201802045
Research on Wind Turbine Test System Based on JointSimulation
Song Zhongyue, Zhen Dong, Zhang Hao, Shi Zhanqun, Ma Jiaojiao
(School of Mechanical Engineering, Hebei University of Technology,Tianjin 300130, China)
Abstract: As the test equipment of wind turbine can not simulate wind driven exactly and the impact of environmental factors is hard to be taken into account, the simulation results have larger errors. The problem is solved by establishing the virtual test bench in the way of combined simulation. The wind speed modelis optimized by combining the fitting of probability and the combinated wind speed model to drive the wind turbine;and the settings of some relevant contact force parameters are considered,which canmake the simulation results are closer to the actual situation. The credibilityof the system isdemonstrated and the validity is verified.
Keywords:wind turbine gearbox fault; wind speed simulation; joint simulation; virtual test bench; credibility
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电磁-永磁式遥控施药胶囊驱动装置优化设计
鲁正平,郭旭东,许堂成,秦锐华
(上海理工大学医疗器械与食品学院,上海 200093)
摘要:为对胃肠道病灶处实现快速、可靠、可控的药物输送,研究了电磁-永磁式施药驱动装置。为克服磁力随距离迅速衰减,设计了驱动装置的结构,使其满足驱动行程大的药物释放需求;并结合正交试验理论和有限元仿真计算不同参数的磁场驱动力,优化电磁线圈和永磁体的结构参数,以实现有限空间内的最优驱动力。采用优化后的参数对磁力驱动装置中的磁场分布进行了仿真。仿真验证表明:优化后的驱动装置能满足施药所需的驱动力。为磁力驱动装置的实现提供了理论依据。
关键词:定点药物释放;施药驱动;多次释放;正交试验;有限元仿真;磁场分布
中图分类号:TP215;TP391.9????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0747-06
DOI: 10.16182/j.issn1004731x.joss.201802046
Optimum Design of Remote Delivery Capsule’s Driving Mechanism 2ztag8879环亚手机|首页主页
Based on Electromagnetic-Permanent Magnet
Lu Zhengping, GuoXudong, Xu Tangcheng, Qin Ruihua
(School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)
Abstract:To achieve fast, reliable and controllable drug delivery in the gastrointestinal lesions, a suitable delivery driving mechanism was studied. The structure of the driving mechanism was designedto overcome the magnetic force decaying rapidly with distance, whichcan satisfy the demands of the drug delivery for the large dose and long driving stroke.By combining the orthogonal test theory and the finite element simulation, the magnetic driving forcehas been calculatedforthe parameters of the electromagnetic coil and permanent magnet in different combinations of the values. The structure parameters of the electromagnetic coil and the permanent magnethave been optimizedto achieve the maximum magnetic driving force within the limited space.Themagnetic field distribution of the magnetic driving mechanismis simulatedby the optimized parameters. The simulation results show thatthe optimized magnetic driving force can satisfy the requirement of the medicine delivery, which provides a theoretical basis for developing the magnetic driving mechanism.
Keywords: site-specific drug delivery; drug release driver; repeatedly release; orthogonal test; finite element simulation; magnetic field distribution
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基于ESOLQR控制器在无人机姿态控制中的研究
潘健,刘昌龙
(湖北工业大学电气与电子工程学院,武汉 430068)
摘要:由于复杂环境下不确定扰动及模型参数变化等因素的存在,传统线性二次调节控制器(LQR)可能导致控制对象的不稳定,提出了基于扩张状态观测器(ESO)LQR控制策略,旨在保证控制对象在复杂环境下工作的可靠性。以四旋翼无人机Qball-X4为研究对象构建其非线性动力学模型。利用ESO能够实时估计并补偿内扰和外扰的能力改进LQR姿态控制器。通过Matlab/Simulink仿真和四旋翼无人机Qball-X4实际飞行测试验证了该算法的有效性。
关键词:扩张状态观测器(ESO);线性二次调节器(LQR);四旋翼无人机;姿态控制器
中图分类号:TB273+.1????? 文献标识码:A?????? 文章编号:1004-731X (2018) 02-0753-07
DOI: 10.16182/j.issn1004731x.joss.201802047
UAV Attitude Control with LQR Controller Based on Extended State Observer
Pan Jian, Liu Changlong
(Department of Electrical and Electronic Engineering, Hubei University of Technology, Wuhan 430068, China)
Abstract: Due to the external disturbances and parameter variations in the complex environment, the traditional linear quadratic controller (LQR) may induce instability to the controlled object. A control strategy of LQR based on extended state observer (ESO) is proposed, which aims to ensure the working reliability of the controlled object in complex environment. The nonlinear mathematical model of the quadrotor Qball-X4 is established. The ESOs abilities of estimating and compensating the impact of internal/external disturbances simultaneously are used to improve the LQR attitude controller. Matlab/Simulink simulation and an experiment of trajectory tracking on the quadrotor Qball-X4 verify the validity of the proposed algorithm.
Keywords: extended state observer (ESO); linear quadratic controller (LQR); quadrotor UAV; attitude controller
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