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Search Results: 1 - 10 of 127260 matches for " Zhang Qing-Ling "
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系统科学与数学 , 1993,
Abstract: 一、引言广义分散控制系统日益受到人们的重视.从80年代后期开始,Chang、王朝珠等人各自提出并讨论了这类系统的脉冲固定模;文3—7]和10]从不同的角度讨论了脉冲固定模的特征.本文将从系统结构上讨论脉冲固定模及其结构特征.
Synchronisation of chaotic systems using a novel sampled-data fuzzy controller

Feng Yi-Fu,Zhang Qing-Ling,

中国物理 B , 2011,
Abstract: This paper presents the synchronisation of chaotic systems using a sampled-data fuzzy controller and is meaningful for many physical real-life applications. Firstly, a Takagi--Sugeno (T--S) fuzzy model is employed to represent the chaotic systems that contain some nonlinear terms, then a type of fuzzy sampled-data controller is proposed and an error system formed by the response and drive chaotic system. Secondly, relaxed LMI-based synchronisation conditions are derived by using a new parameter-dependent Lyapunov--Krasovskii functional and relaxed stabilisation techniques for the underlying error system. The derived LMI-based conditions are used to aid the design of a sampled-data fuzzy controller to achieve the synchronisation of chaotic systems. Finally, a numerical example is provided to illustrate the effectiveness of the proposed results.
Adaptive synchronization of uncertain chaotic systems via switching mechanism

Feng Yi-Fu,Zhang Qing-Ling,

中国物理 B , 2010,
Abstract: This paper deals with the problem of synchronization for a class of uncertain chaotic systems. The uncertainties under consideration are assumed to be Lipschitz-like nonlinearity in tracking error, with unknown growth rate. A logic-based switching mechanism is presented for tracking a smooth orbit that can be a limit cycle or a chaotic orbit of another system. Based on the Lyapunov approach, the adaptation law is determined to tune the controller gain vector online according to the possible nonlinearities. To demonstrate the efficiency of the proposed scheme, the well-known chaotic system namely Chua's circuit is considered as an illustrative example.
Robust Input-Output Energy Decoupling for Uncertain Singular
Robust Input-Output Energy Decoupling for Uncertain Singular Systems

Xin-Zhuang Dong,Qing-Ling Zhang,
Xin-Zhuang Dong
,Qing-Ling Zhang Institute of System Science,Northeastern University,Shenyang,Liaoning,PRC

国际自动化与计算杂志 , 2005,
Abstract: This paper addresses the robust input-output energy decoupling problem for uncertain singular systems in which all parameter matrices except E exist as time-varying uncertainties. By means of linear matrix inequalities (LMIs), su?cient conditions are derived for the existence of linear state feedback and input transformation control laws, such that the resulting closed-loop uncertain singular system is generalized quadratically stable and the energy of every input controls mainly the energy of a corresponding output, and in?uences the energy of other outputs as weakly as possible.
Passive Controller Design for T-S Fuzzy Systems with Time-delay

ZHANG Yan,ZHANG Qing-Ling,LI Qin,

自动化学报 , 2009,
Abstract: A sufficient condition is derived for the existence of passive state feedback controller for T-S fuzzy systems with time-delay. Compared with the existing results, this condition is less conservative. Based on this result, sufficient conditions are given for the existence of observer-based controller and dynamic output feedback controller. The controllers are designed by solving a set of linear matrix inequalities (LMIs). Finally, two illustrative examples are given to show the validity of the proposed approaches.
On Controllability and Observability of Linear Time-varying Singular Systems

ZHANG Xue-Feng ZHANG Qing-Ling,

自动化学报 , 2009,
Abstract: Two basic issues of time-varying systems and time-varying singular systems are discussed. Two necessary conditions to judge the controllability and observability of time-varying systems and time-varying singular systems are obtained. The conditions only depend on the system matrix and input matrix, without introducing and calculating system state transition matrix. It is easy to judge the controllability and observability of time-varying systems and time-varying singular systems. The result extends the corresponding conclusion of linear time invariant systems. The paper may practically enlighten the research on time-varying systems.
Passivity for differential-algebraic systems

ZHANG Xiu-hu,ZHANG Qing-ling,

控制理论与应用 , 2005,
Abstract: The passive control problem for differential-algebraic systems is investigated.The passive definition of differential-algebraic systems and KYP property definition are proposed.Similar to methods of differential geometry theory,equivalent theorem between differential-algebraic systems' passivation and KYP property was given,the necessary and sufficient passive condition for differential-algebraic systems is given by introducing M derivative.In the end,the condition of passive controller existence is presented.M derivative method can be considered as extension of L derivative method.A series of results are obtained,which combines passive concept coming from physical systems with control theory.
Decentralized output feedback robust stabilization and impulse analysis of uncertain generalized large-scale composite system

Ma Yue-Chao,Zhang Qing-Ling,

物理学报 , 2007,
Abstract: This paper considers a class of uncertain generalized large-scale composite system and studies the decentralized stabilization problem for the system by employing Lyapunov method and using the matrix norm properties.We design a kind of decentralized output feedback robust controllers and obtain the norm bounds of system uncertainties which ensure robust stabilization for the system.Meanwhile,we analyse the impulse control problem of uncertain generalized composite system and its isolated subsystems.We give the norm bounds of system uncertainties which ensure the closed loop system impulse free.Finally,we obtain the norm bounds of being asymptoticly stable and impulse free for the closed loop of uncertain generalized composite system and its isolated subsystems.
Observer-Based H∞ Controller Designs for T-S Fuzzy Systems

LIU Xiao-Dong,ZHANG Qing-Ling,

自动化学报 , 2003,
Abstract: 研究了T-S(Takagi-SUgeno)模糊系统H∞控制设计问题,放宽了Kim E.等的T-S模糊系统可二次稳定的条件,给出了T-S模糊系统新的观测器设计方法,然后给出了T-S模糊系统基于观测器的H∞控制存在的两个新的充分条件,新方法不但简单,而且充分考虑了模糊子系统间的相互作用,最后通过例子,应用LMI技术,说明了本文给出的T-S模糊系统的基于观测器的H∞控制器的设计方法简便易行。
Bifurcations and chaos control in discrete small-world networks

Li Ning,Sun Hai-Yi,Zhang Qing-Ling,

中国物理 B , 2012,
Abstract: An impulsive delayed feedback control strategy to control period-doubling bifurcations and chaos is proposed. The control method is then applied to a discrete small-world network model. Qualitative analyses and simulations show that under a generic condition, the bifurcations and the chaos can be delayed or eliminated completely. In addition, the periodic orbits embedded in the chaotic attractor can be stabilized.
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