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Joint 48th IEEE Conference on Decision and Control and 28th Chinese Control Conference

作者： M.Barkhordari Yazdi M.R.Jahed-Motlagh S.A.Attia J.Raisch Complex Systems Research Laboratory Iran University of Science and Technology Fachgebiet Regelungssysteme Technische Universitt Berlin

This paper presents a new concept of linearization of switched nonlinear systems,called modal feedback *** aim is to transform a switched nonlinear system into an equivalent controllable switched linear ***,we define the notion of modal state feedback ***,we present a class of planar switched nonlinear systems which are globally transformable by a switched state feedback control and a state space transformation into a controllable switched linear *** and sufficient conditions are given for the existence of a suitable state transformation with a special *** approach is constructive in nature in the sense that once the conditions are satisfied,the state transformation is derived leading to modal feedback *** illustrative examples,including a physical one,are presented.

关键词： origin Lyapunov Switched Feedback Equivalence of a Class of Planar Switched Nonlinear systems

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Design and implementation for a non linear state filter for LEO micro satellite

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Journal of Applied sciences 2009年第24期9卷 4195-4205页

作者： Chouraqui, S. Benyettou, M. Simulation and Modeling of Industrial Systems Laboratory Department of Computer Science Faculty of Science University of Science and Technology of Oran P.O.Box BP 1505 EI-Menaour Oran Algeria

This study preliminarily investigates the numerical application of both Extended Kalman Filter (EKF) (which has traditionally been used for non linear estimation) and a relatively new filter, Unscented Kalman Filter (UKF) to the nonlinear estimation problem. The new method can be applied to nonlinear systems without the linearization process necessary for the EKF and it does not demand a Gaussian distribution of noise and what's more, its ease of implementation and more accurate estimation features enables it to demonstrate its good performance. Present experimental results and analysis indicate that unscented Kalman filtering UKF have shown better performances in presence of the severe nonlinearity in state equations. © 2009 Asian Network for Scientific Information.

关键词： Extended Kalman filters

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Fault Detection of Networked Control systems Subject to Access Constraints and Random Packet Dropout

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自动化学报 2009年第9期35卷 1230-1234页

作者： WANG Yong-Qiang YE Hao DING Steven WANG Gui-Zeng Department of Automation Tsinghua National Laboratory for Information Science and Technology (TNList) Tsinghua University Beijing 100084 P. R. China Institute for Automatic Control and Complex Systems University of Duisburg-Essen Duisburg 47057 Germany

In this paper, the problem of fault detection is addressed for networked control systems (NCSs) subject to both access constraints and random packet dropout, which to the best of our knowledge has not been considered before. Both residual generation and residual evaluation as well as false alarm computation of the designated threshold are given. First, based on a deterministic formulation, residual generation is carried out in the periodic system framework. Then, residual evaluation is achieved by making full use of the stochastic properties of the random packet dropout. Finally, performance evaluation of the designated threshold, i.e., the computation of false alarm rate, is fulfilled with the assistance of Chebyshev s inequality. simulation results are given to illustrate effectiveness of the proposed method.

关键词：故障检测网路控制接入约束残差

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State estimation for mobile robot using neural networks

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Journal of Applied sciences 2009年第22期9卷 3957-3965页

作者： Chouraqui, S. Benyettou, M. Simulation and Modelling of Industrial Systems Laboratory Department of Computer Science Facultyty of Science University of Science and Technology of Oran Mohammed Boudiaf USTO P.O. Box 1505 El Menaour Oran Algeria

In this study, we describe a state estimation method using neural networks. The developed method has been applied to the problem of estimating the parameter of a six degree of freedom (DOF) PUMA 560 Robot arm manipulator. The results obtained were compared with the conventional Extended Kalman Filter, showing an improvement in performance and robustness. From the simulations performed, it can be said that the neural filter proposed for the studied application is more consisted and convergent than the EKF filter. © 2009 Asian Network for Scientific Information.

关键词： Neural networks

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AN EVOLUTIONARY RBF NETWORKS BASED ON RPCL AND ITS APPLICATION IN FAULT DIAGNOSIS

AN EVOLUTIONARY RBF NETWORKS BASED ON RPCL AND ITS APPLICATI...

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2009 International Conference on Machine Learning and Cybernetics(2009机器学习与控制论国际会议)

作者： ZENG-SHUN ZHAO MIN TAN ZENG-GUANG HOU DE XU College of Information and Electrical Engineering Shandong University of Science and Technology Qi Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of

The performance of a RBF neural network strongly depends on the network structure and parameters. Therefore, an algorithm that can automatically select the network configuration will be very beneficial. This paper presents a novel method where configuration of an RBF network can be learned by a hybrid training schema. Appropriate number of neural nets in the hidden layer and their coarse centers is obtained by a modified version of Rival Penalized Competitive Learning (RPCL). Then, Genetic Algorithm is applied to determine the optimal parameters including refined cluster centers, variance of Radial-Basis Function and weights. The application of proposed evolutionary RPCL-RBF networks is discussed and the result of simulation illustrate that proposed method is effective.

关键词： RBF network Genetic Algorithm Competitive Learning Fault Diagnosis

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Knowledge-guided genetic algorithm for path planning of robot

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Kongzhi yu Juece/Control and Decision 2009年第7期24卷 1043-1049页

作者： Wang, Xue-Song Gao, Yang Cheng, Yu-Hu Ma, Xiao-Ping School of Information and Electrical Engineering China University of Mining and Technology Xuzhou 221116 China Institute of Automation The Key Laboratory of Complex Systems and Intelligence Science Chinese Academy of Sciences Beijing 100190 China

In order to improve the convergence speed of traditional genetic algorithm for path planning of robot, a knowledge-guided genetic algorithm is designed by introducing domain knowledge of a path planning problem into the coding of chromosome, initialization of population, genetic operators and optimization operators. The length, safety and smoothness of paths are considered simultaneously during the process of path planning. Four optimization operators, deletion, simplification, modification and smoothness operators, are used to optimize paths searched by the genetic operators. simulation results show that the proposed method can improve the ability and efficiency of genetic algorithm in solving the practical path planning problem of robot.

关键词： Motion planning

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Design and simulation of the Tire Pressure Sensor Based on the SAW Resonator and the Tire Capacitor Impedance

Design and Simulation of the Tire Pressure Sensor Based on t...

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IEEE Intelligent Vehicles Symposium (IV)

作者： Xiangwen Zhang Fei-Yue Wang College of Computer and Control Guilin University of Electronic Technology Key Laboratory of Complex Systems and Intelligence Science Chinese Academy of Sciences

ISBN: (纸本)9781424435036

A novel tire pressure sensor based on the SAW resonator and the tire capacitor impedance was researched, and the sensor can measure the tire pressure wirelessly and passively according to the relation between the tire pressure and the tire capacitor impedance and the relation between the tire capacitor impedance and the resonant frequency of the sensor circuit. The novel sensor structure was introduced, and four L type, five T type and five π type sensor circuit structures were analyzed and their frequency characteristics were simulated. The simulation results show that the T1～T5, π1, π2, π4 and π5 type sensor circuit structures are suitable for the tire pressure sensor, and the performance of the T3 type sensor circuit structure is the best among them. The sensitivities of the sensor were calculated and the best sensor circuit was designed according to the simulation and analysis results.

关键词： surface acoustic wave resonators TIRE PRESSURE Sensors Capacitors simulating impedance

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Bioluminescence tomography based on Bayesian approach

Bioluminescence tomography based on Bayesian approach

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Medical Imaging 2009: Biomedical Applications in Molecular, Structural, and Functional Imaging

作者： Feng, Jinchao Jia, Kebin Tian, Jie Yan, Guorui Qin, Chenghu The College of Electronic Information and Control Engineering Beijing University of Technology Beijing 100022 China Medical Image Processing Group Key Laboratory of Complex Systems and Intelligence Science Institute of Automation P. O. Box 2728 Beijing 100190 China Life Science Research Center Xidian University Xi'an 710071 China

ISBN: (纸本)9780819475138

As a new mode of molecular imaging, bioluminescence tomography (BLT) will have *** *** on revealing the molecular and cellular information in vivo at the whole-body small animal level because of its high sensitive detection and facile operation. However, BLT is an ill-posed problem, it is necessary to incorporate a priori knowledge into the tomographic algorithm. In this paper, a novel Bayesian reconstruction algorithm for BLT is firstly proposed. In the algorithm, a priori permissible source region strategy is incorporated into the Bayesian network to reduce the ill-posedness of BLT. Then a generalized adaptive Gaussian Markov random field (GAGMRF) prior model for unknown source density estimation is developed to further reduce the ill-posedness of BLT on the basis of adaptive finite element analysis. Finally, the algorithm maximizes the log posterior probability with respect to a noise parameter and the unknown source density, the distribution of bioluminescent source can be reconstructed. In addition, the novel tomography algorithm based adaptive finite element makes the method more appropriate for complex phantom such as real mouse. In the numerical simulation, a heterogeneous phantom is used to evaluate the performance of the proposed algorithm with the Monte Carlo based synthetic data. The accurate localization of bioluminescent source and quantitative results show the effectiveness and potential of the tomographic algorithm for BLT. © 2009 SPIE.

关键词： Monte Carlo methods

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Study of Direction Probability and Algorithm of Improved Marriage in Honey Bees Optimization for Weapon Network System

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Defence technology（防务技术） 2009年第2期5卷 152-157页

作者：杨晨光涂序彦陈杰 Systems Engineering Research Institute China State Shipbuilding Corporation Department of Automation School of Information Science and Technology Beijing Institute of Technology Ministry of Education of Key Laboratory of Complex System Intelligent Control and Decision Beijing Institute of Technology

To solve the weapon network system optimization problem against small raid objects with low attitude,the concept of direction probability and a new evaluation index system are *** calculating the whole damaging probability that changes with the defending angle,the efficiency of the whole weapon network system can be subtly *** such method,we can avoid the inconformity of the description obtained from the traditional index *** new indexes are also proposed,*** index,overlap index and cover index,which help manage the relationship among several *** normalizing the computation results with the Sigmoid function,the matching problem between the optimization algorithm and indexes is well ***,the algorithm of improved marriage in honey bees optimization that proposed in our previous work is applied to optimize the embattlement *** is carried out to show the efficiency of the proposed indexes and the optimization algorithm.

关键词：网络系统优化问题破坏概率算法改进核武器蜜蜂婚姻 Sigmoid函数

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Switched feedback equivalence of a class of planar switched nonlinear systems

Switched feedback equivalence of a class of planar switched ...

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IEEE Conference on Decision and Control

作者： M. Barkhordari Yazdi M.R. Jahed-Motlagh S. A. Attia J. Raisch Complex Systems Research Laboratory Iran University of Science and Technology Tehran Iran Fachgebiet Regelungssysteme Technische Universität Berlin Berlin Germany

ISBN: (纸本)9781424438716

This paper presents a new concept of linearization of switched nonlinear systems, called modal feedback linearization. The aim is to transform a switched nonlinear system into an equivalent controllable switched linear system. First, we define the notion of modal state feedback linearization. Then, we present a class of planar switched nonlinear systems which are globally transformable by a switched state feedback control and a state space transformation into a controllable switched linear system. Necessary and sufficient conditions are given for the existence of a suitable state transformation with a special structure. Our approach is constructive in nature in the sense that once the conditions are satisfied, the state transformation is derived leading to modal feedback linearization. Two illustrative examples, including a physical one, are presented.

关键词： Nonlinear systems Control systems Nonlinear control systems Switched systems Lyapunov method Linear systems State feedback Design methodology Linear feedback control systems Communication switching

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