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系统仿真学报 2008年第21期20卷 5970-5975,5998页

作者：宋受俊刘卫国西北工业大学自动化学院陕西西安710072

利用Matlab中的电力系统工具箱(PSB)建立了开关磁阻电机的非线性仿真模型。基于电机运行时的磁链轨迹,详细分析了开关磁阻电动机及发电机的能量转换过程并推导出了它的能量效率计算公式。以开关磁阻电动机为例对几种能够提高电机有效输... 详细信息

利用Matlab中的电力系统工具箱(PSB)建立了开关磁阻电机的非线性仿真模型。基于电机运行时的磁链轨迹,详细分析了开关磁阻电动机及发电机的能量转换过程并推导出了它的能量效率计算公式。以开关磁阻电动机为例对几种能够提高电机有效输出能量的优化方法进行了分析、仿真及实验研究,仿真及实验结果直观地表明了所论及优化方法的有效性。基于磁链轨迹的仿真分析方法的引入以及几种优化方法的仿真及实验结果对开关磁阻电机的优化设计及控制有一定的参考价值。

关键词：开关磁阻电动机/发电机磁链轨迹能量效率优化设计优化控制

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维普期刊数据库

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Multiobjective particle swarm optimization based on differential evolution for environmental/economic dispatch problem

Multiobjective particle swarm optimization based on differen...

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2011 Chinese Control and Decision Conference（CCDC）

作者： WU Ya-li is with school of automation and Information Engineering Xi''an University of Technology,shaanxi,China.XU Li-qing is with school of automation and Information Engineering,Xi''an University of Technology,shaanxi,China.ZHANG Jin is with school of automation and Information Engineering,Xi''an University of Technology,shaanxi,China

This paper presents a multiobjective particle swarm optimization based on differential evolution （IMOPSO-DE） algorithm for environmental/economic dispatch （EED） *** algorithm adopted differential evolution to increase the diversity of the Pareto *** crowded sorting approach helped to generate a set of well-distributed Pareto-optimal solutions in one *** global best individuals in multiobjective optimization domain are redefined through a new multiobjective fitness roulette *** optimization runs of the proposed approach have been carried out on the IEEE30-BUS six-generator test *** results revealed that proposed approach obtained high-quality solutions and was able to provide a satisfactory compromise solution in almost all the trials,thereby validating the efficacy and applicability of the proposed approach over the real-word multiobjective optimization problems.

关键词： Environmental/economic dispatch Differential evolution Particle swarm optimization Multiobjective optimization

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On Stability of Switched Homogeneous Nonlinear Systems

On Stability of Switched Homogeneous Nonlinear Systems

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第25届中国控制会议

作者： Zhang Lijun, Sun Rong, Yue Hongda school of automation, Harbin Engineering University of China

＜正＞In this paper, the problem of stability of switched homogenous systems is addressed. First of all, if there is a quadratic Lyapunov function such that nonlinear homogenous systems are asymptotically stable, a matrix Lyapunov-like equation is obtained for a stable nonlinear homogenous system using semi-tensor product of matrices, and Lyapunov equation of linear system is just its particular case. Following the previous results, a sufficient condition is obtained for stability of switched nonlinear homogenous systems, and a switching law is designed by partition of state space. In particular, a constructive approach is provided to avoid chattering phenomena which is caused by the switching rule. Then for planer switched homogeneous systems, an LMI approach to stability of planer switched homogeneous systems is presented. As such, it is easily verified by computer as possibly as that of linear system. An example is given to illustrate that candidate common Lyapunov function is a key point for design of switching law.

关键词： Switched homogenous nonlinear systems stability semi-tensor product of matrices LMI approach

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Adaptive Observer Design for a Class of Uncertainty System Based on Fuzzy Systems

Adaptive Observer Design for a Class of Uncertainty System B...

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2010 Chinese Control and Decision Conference

作者： Wenqing Wang,Na Cao school of automation,Xi''an University of Posts and Telecommunications,Xi''an 710061

＜正＞A novel states observer design method for a class of nonlinear uncertainty systems is proposed.A fuzzy system is constructed to approximate the uncertainties which are centralized firstly to control the complexity of approximating *** output of fuzzy systems is directly used in synthesizing the robust terms,and its parameters can be automatically adjusted by adaptive *** on Lyapunov’s direct method,all states estimate errors and parameters estimate errors are guaranteed to stay uniformly ultimately *** with the known results, some assumption is weakened by the *** simulation shows the validity of proposed method.

关键词： state observer uncertainty system fuzzy systems parameter adaptive

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基于超混沌Chen系统和密钥流构造单向散列函数的方法

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通信学报 2009年第10期30卷 100-106,113页

作者：任海鹏庄元西安理工大学自动化与信息工程学院陕西西安710048

提出了一种基于超混沌Chen系统和密钥流构造单向散列函数的方法,这种方案把明文和密钥作为2个超混沌Chen系统的初始值,按照系统的超混沌动力学特性进行一定时间的演化。将演化的最终结果进行量化,将量化值代入密钥流进行迭代,实现明文... 详细信息

提出了一种基于超混沌Chen系统和密钥流构造单向散列函数的方法,这种方案把明文和密钥作为2个超混沌Chen系统的初始值,按照系统的超混沌动力学特性进行一定时间的演化。将演化的最终结果进行量化,将量化值代入密钥流进行迭代,实现明文和密钥信息的混淆和扩散,并基于密码块链接方式产生任意长度明文的128bit散列值。理论分析和实验表明,这种构造散列函数的方法可以满足散列函数所要求的数值压缩功能、不可逆性、初值敏感性、防伪造性和抗碰撞性等安全性能要求。提出的散列函数构造方法较现有一些方法具有更好的抗碰撞性能。

关键词：单向散列函数超混沌Chen系统密钥流密码块链接

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维普期刊数据库

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Adaptive Neural-Network Tracking Stabilization for Switched Nonlinear Systems with Disturbances

Adaptive Neural-Network Tracking Stabilization for Switched ...

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2011 Chinese Control and Decision Conference（CCDC）

作者： Lei Yu is with the school of Mechanical and Electrical Engineering,Soochow University,Suzhou,215021,China,and with the school of automation,Southeast University,Nanjing,210096,China.Shumin Fei is with the school of automation,Southeast University,Nanjing,210096,China.

In this paper,the robust adaptive tracking stabilization problem in the sense of uniformly ultimate boundedness （UUB） for a class of switched nonlinear systems with external disturbances is *** neural networks （NNs） are used to approximate unknown functions for solving the restraints of feedback linearizable *** weights of RBF NNs updated laws and switching signals have been derived to make the closed loop system Lyapunov stable.A robust H∞ controller is designed to enhance robustness due to the existence of the compound disturbance which consists of approximation errors of the neural networks and external *** proposed control scheme can guarantee asymptotical stability and disturbance attenuation performance of tracking error for switched nonlinear systems under all admissible switching ***,we give a simulation example to illustrate the effectiveness of the proposed control scheme.

关键词： RBF neutral networks H∞ control Asymptotical stability Disturbance attenuation

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Consensus of Multi-Agent Systems with Stochastic Switching Topology

Consensus of Multi-Agent Systems with Stochastic Switching T...

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第二十七届中国控制会议

作者： Zhang Ya school of automation,Southeast University,Nanjing 210096,P.R.China

This paper studies the mean square consentability problem for a network of double-integrator agents with stochastic switching *** is proved that in Markovian switching topologies,the network is mean square consentable under linear consensus protocol if and only if the union of graphs in the switching topology set has a globally reachable node.A necessary and sufficient condition of the mean square consensus is ***,an LMI approach to the design of the consensus protocol is *** simulations are given to illustrate the theoretic results.

关键词： Consensus Consentability Multi-agent systems Markovian switching topology Coordinated control

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基于支持向量机元模型的随机鲁棒设计(英文)

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系统仿真学报 2008年第19期20卷 5374-5379,5390页

作者：张超陈宗基北京航空航天大学自动化科学与电气工程学院自动控制系北京100191

随机鲁棒设计是一种基于蒙特卡洛仿真的优化设计方法。通常情况下,对于复杂仿真模型的随机鲁棒设计时间开销很大。为减小随机鲁棒设计过程中的时间开销,使用参数最优的最小二乘支持向量机替代仿真模型进行随机鲁棒设计。使用标准粒子群... 详细信息

随机鲁棒设计是一种基于蒙特卡洛仿真的优化设计方法。通常情况下,对于复杂仿真模型的随机鲁棒设计时间开销很大。为减小随机鲁棒设计过程中的时间开销,使用参数最优的最小二乘支持向量机替代仿真模型进行随机鲁棒设计。使用标准粒子群优化算法搜索支持向量机参数和控制器参数的寻优。通过一个基准测试问题证明了该方法的可行性。

关键词：随机鲁棒性元模型最小二乘支持向量机蒙特卡洛仿真粒子群优化

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维普期刊数据库

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Special Inclinations for Satellite Formations in Near Circular Orbits

Special Inclinations for Satellite Formations in Near Circul...

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第24届中国控制与决策会议

作者： Guangyan Xu and Zhi Du school of automation, Shenyang Aerospace University, Shenyang, China, 110136

The possibility to obtain a natural periodic satellite formation is investigated. This paper shows that such formations under J 2 perturbation have four possible inclinations, which are the inclination at equatorial orbit （ i 0° / 180°）, inclination at polar orbit （ i 90°）, the critical inclination （ i 63.4° / 116.6°）and the "succeeding critical inclination" （ i 49.1° /130.9°）.Periodic and quasi-periodic relative orbits are introduced based on the special inclinations.

关键词： J 2 Perturbation Satellite Formation Special Inclinations

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Dynamical Analysis and Synchronization of a Chaotic Networked System

Dynamical Analysis and Synchronization of a Chaotic Networke...

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第三届全国复杂动态网络学术论坛

作者： Guofeng Zhang school of automation, Hangzhou Dianzi University, Hangzhou, Zhejiang, China, 310038.

＜正＞This paper first reviews some results of a chaotic networked system with emphasis on its periodicity and structural stability, then synchronizes it and the Logistic map as well as the Lorenz system. Several prob... 详细信息

关键词： Nonsmooth discrete chaos non-convexity stability synchronization

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