离散多步时滞系统的容错控制研究  

On Fault-tolerant Control for Discrete Mulitiple Time-delay Systems

作　　者：李炜[1] 刘微容[1] 李亚洁[1] 赵静[1] 王君[1] 

机构地区：[1]兰州理工大学电气工程与信息工程学院,甘肃兰州730050

出　　处：《控制工程》2008年第2期192-195,共4页Control Engineering of China

基　　金：甘肃省自然科学基金资助项目(3ZS051-A25-032);甘肃省教育厅高等学校研究生导师科研基金资助项目(050301)

摘　　要：针对离散多步时滞系统,基于Lyapunov稳定性理论,采用具有状态反馈及时滞状态反馈的控制律,推出了当执行器或传感器发生失效故障时闭环系统仍能保持渐近稳定需满足的充分条件;并利用LMI给出了不依赖时滞的线性离散多步时滞系统的容错控制器的通用求解方法;讨论了该方法对具有不同时滞步数离散多步时滞系统容错的普适性。以执行器失效故障为例,仿真结果证明了该方法的有效性。In accordance with discrete systems with multiple time-delay, the fault-tolerant control problem is investigated by adopting state feedback and time-delay state feedback control law based on Lyapunov stability theory. A sufficient condition for the closed-loop system possessing integrity against actuator or sensor failures is derived. The fault-tolerant controller design method is given utilizing the LMI for the system which is independent on time-delay. The universal applicability to fault-tolerant of discrete systems with different multiple time-delay are discussed. The simulation results show the effectiveness of the proposed method against actuator failures.

关 键 词：容错控制 离散时滞系统 时滞状态反馈 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]