时变采样网络控制系统的容错控制器设计  

The Design of Fault Tolerant Controller for Networked Control Systems with Time-Varying Sampling Period

作　　者：樊金荣[1,2] 

机构地区：[1]中南民族大学计算机科学学院,武汉430074 [2]华中科技大学控制科学与工程系,武汉430074

出　　处：《中南民族大学学报（自然科学版）》2011年第3期80-84,共5页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：国家自然科学基金资助项目(60874053);中央高校基本科研业务费专项资金资助项目(ZZQ10003)

摘　　要：研究了具有时变采样周期的网络控制系统在执行器故障时的容错控制器设计问题.首先,将时变采样周期的不确定性转化成系统结构参数的不确定性,建立了时变采样周期网络控制系统的离散模型;在此基础上,设计了状态反馈容错控制器,保持闭环网络控制系统稳定并满足给定的LQR性能指标,该控制器参数通过求解线性矩阵不等式(LMIs)得出.最后,通过实例阐述了上述设计过程,仿真结果证明:此方法是有效的.In this paper,the fault tolerant control problem is investigated for a networked control system（NCS） with uncertain sampling period and actuator faults.First,the influence caused by time-varying sampling period is transformed into structured modeling error and the discrete time domain system model is proposed.The purpose of this study is to design a state feedback controller such that,for the variable sampling period and actuator faults,the closed-loop system is stable and satisfies the prescribed LQR performance.The controller parameters are designed by solving some linear matrix inequalities（LMIs）.A numerical example is given to illustrate the design procedure and simulations demonstrate the efficiency of the proposed method.

关 键 词：网络控制系统 容错控制 时变采样周期 LQR性能指标 线性矩阵不等式 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]