基于LMI的鲁棒容错控制及其在卫星姿态控制中的应用

Robust fault-tolerant H-infinity control based on LMI approach and application in satellite attitude control system

研究了一种线性不确定系统的鲁棒容错控制问题.针对执行机构和敏感器故障,运用线性矩阵不等式(LMI)方法,提出一种对执行机构和传感器失效具有完整性,且满足给定控制指标的输出反馈H∞鲁棒容错控制设计方法.将该方法应用于卫星姿态控制系统的容错控制并进行了数学仿真,仿真结果验证了方法的有效性.

The robust fault-tolerant H-infinity control problem of uncertain linear system is studied in this paper. The solution of this problem is obtained for a H-infinity output feedack controller by a linear matrix inequality （LMI） approach. The simulation of a satellite attitude control system with actuator and sensor faults validates that this solution is effective and more suitable in on-board real-time computation.