基于降维观测器状态反馈系统的鲁棒容错控制

Robust fault-tolerant control for state feedback systems based on a reduced order observer

对具有不确定参数的连续控制系统,针对传感器失效,研究了鲁棒容错控制器的设计问题。采用Luenberger降维观测器实现系统状态的估计,解决系统状态不易直接测得的问题。在此基础上给出了既保证闭环系统鲁棒稳定,又保证系统具有完整性的鲁棒容错控制器的设计方法。数值算例表明了文中提出的控制器设计方法的有效性。

A design method of robust fault tolerance for uncertain linear systems with sensor failures is discussed in this paper. A Luenberger reduced order observer is used to realize the state feedback because the states of the linear system can not be observed directly. Based on it, a design method of robust fault tolerant controller is given to guarantee the robust stability and the integrity for the closed loop system.A numerical example is given to illustrate the design procedure and its effectiveness.