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Received:May 09, 2014 Revised:June 06, 2014
Received:May 09, 2014 Revised:June 06, 2014
中文摘要: 针对网络控制系统中存在于传感器-控制器-执行器间的双时延问题, 提出了一种基于Markov模型的状态反馈控制策略. 与传统应用Markov随机过程的方式相比, 该策略采用两个Markov链描述每一个时延, 通过状态反馈把该随机系统描述为具有四个随机参量的离散Markov跳变系统. 利用Lyapunov有限时间稳定性理论分析得到该系统稳定的充分条件, 并利用线性矩阵不等式(LMI)得到了可行的反馈矩阵. 数值仿真结果进一步证明了该策略的有效性.
中文关键词: Markov跳变系统 有限时间稳定 状态反馈 随机时延 线性矩阵不等式
Abstract:This paper is concerned about the networked control systems with random time delays, which occur in both sensor-controller and controller-actuator. For solving the problem of its dynamic features and uncertainty, one puts forward a state feedback control strategy with Markov characteristics. Moreover, in contrast with the way modeled through Markov stochastic process, each time-delay is described with two Markov chains, so that the resulting closed-loop system is established as a discrete Markovian jump system with four random parameters. A sufficient condition on the issue of finite-time bounded and stabilization is established through the theory of Lyapunov, and a linear matrix inequality (LMI) approach is employed to calculate the gain matrix of controller. Finally, an illustrative numerical simulation is given to demonstrate the effectiveness of the strategy proposed.
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刘薇,周振,王跃灵.网络化时滞控制系统的有限时间稳定性分析.计算机系统应用,2015,24(2):28-34
LIU Wei,ZHOU Zhen,WANG Yue-Ling.Finite-Time Stability of Networked Control Systems with Time Delay.COMPUTER SYSTEMS APPLICATIONS,2015,24(2):28-34
刘薇,周振,王跃灵.网络化时滞控制系统的有限时间稳定性分析.计算机系统应用,2015,24(2):28-34
LIU Wei,ZHOU Zhen,WANG Yue-Ling.Finite-Time Stability of Networked Control Systems with Time Delay.COMPUTER SYSTEMS APPLICATIONS,2015,24(2):28-34