基于观测器的不确定时滞系统H_∞鲁棒控制  

Robust H_∞ Control Based on Observer for Uncertain Systems with Time-delay

作　　者：廖祥学[1] 

机构地区：[1]重庆三峡学院物电学院,重庆万州40040

出　　处：《重庆三峡学院学报》2009年第3期98-102,共5页Journal of Chongqing Three Gorges University

摘　　要：针对一类状态和控制项中同时含有时滞的线性不确定系统,在系统的状态不能直接测量的情况下,利用Lyaponov函数,基于状态观测型反馈控制器,分析了系统H∞鲁棒渐近稳定的条件.当系统不确定参数变化满足一定条件时,本文所给定理能保证系统H∞鲁棒渐进稳定.然后利用LMI讨论了状态观测器和反馈控制器的一种设计方法,并通过仿真实例验证了该设计方法的有效性.The problem of observer design for a class of uncertain systems in which state and control contain time-delay was presented. Based on observer when system state cann＇t be recently accepted, the condition of robust H∞ stabilization was considered by constructing Lyapunov functions. This approach is proved to be able to make the closed-loop systems asymptotically stable , as well as satisfying H∞ properties. Then, a design method of observer and feedback control is presented based on LMI. At last, a numerical example is provided to demonstrate the validity of the proposed design approach.

关 键 词：时滞系统 观测器 鲁棒镇定 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]