网络化受限控制系统的镇定与L_2增益分析  

Stabilization and L_2-Gain Analysis of Networked Control Systems with Constraints

作　　者：张小美[1] 李洵[1] 

机构地区：[1]南通大学理学院,江苏南通226007

出　　处：《南通大学学报（自然科学版）》2008年第4期1-8,共8页Journal of Nantong University(Natural Science Edition)　

基　　金：江苏省高校自然科学基金资助项目(06KJB120088);南通大学博士科研启动基金项目(07B14);南通大学教学改革研究重点资助课题(A0622)

摘　　要：针对含执行器饱和网络化控制系统,研究其镇定问题与L_2增益分析.鉴于网络诱导时滞的存在,将网络化控制系统建模成含时变输入时滞的受限控制系统.利用Lyapunov-Krasovskii方法和广义系统变换,得到了保证系统稳定的时滞依赖充分条件.在此基础上,设计了状态反馈控制律,使得相应的闭环系统内稳定且具有受限的L_2增益性能.最后,用一个数值仿真例子验证了方法的有效性.This paper deals with the problem of stabilization and L2-gain analysis of networked control systems subject to actuator saturation. The networked control systems （NCSs） are modeled as stochastic systems with time-varying input delays, considering the networked induced time delay. A delay-dependent sufficient condition for the stability of NCSs is derived by using Lyapunov-Krasovskii approach and a descriptor model transformation. Then, a state feedback control law is constructed that leads to the internal stability and a restricted L2-gain performance for the resulting closed-loop system. Finally, a numerical simulation example is provided to demonstrate the effectiveness of the proposed method.

关 键 词：网络化控制系统 执行器饱和 镇定 L2增益 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]