长时延闭环网络控制系统稳定性分析与H_∞控制器设计  

Stability analysis for closed-loop networked control system with long time-delay and design of H_∞ controller

作　　者：刘明[1] 张庆灵[2] 邱占芝[3] 

机构地区：[1]香港城市大学 [2]东北大学系统科学研究所,辽宁沈阳110004 [3]大连交通大学软件学院,辽宁大连116028

出　　处：《系统工程与电子技术》2007年第4期613-617,共5页Systems Engineering and Electronics

基　　金：辽宁省普通高校学科带头人基金(124210);辽宁省科技基金资助课题(20014010411)

摘　　要：研究了传感器、执行器为时钟驱动,控制器为事件驱动,网络诱导时延大于一个采样周期的网络(NCS)的稳定性问题。首先将NCS视为时变时滞系统,然后利用Lyapunov-Krasovskii V泛函方法,在处理V导数的时候,不进行放大估计,而是通过引入一些恰当的零项,构造出LMI,得到了闭环系统渐近稳定的一个充分条件,并给出了系统H∞控制器的设计方法。Matlab仿真算例说明了本文方法和结果的有效性。The stability of NCS with time-delay longer than one sampling period when both sensor and actuator are time-driven as well as controller is event-driven is discussed. Considered NCS is a timevarying time-delay system, the Lyapunov-Krasovskii functional method is used. By adding some appropriate zero terms to the deviation of V and constructing a linear matrix inequality, the delay-dependent stability sufficient condition is derived to ensure the closed-loop NCS＇ s asymptotical stability. Based on this, the design method of the H∞ controller is presented. A Matlab simulation shows the method and the result of this paper are valid.

关 键 词：网络控制系统 长时延 状态反馈 执行器 时钟驱动 H∞控制 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]