一类时滞不确定系统鲁棒容错控制方法

Robust fault-tolerant control algorithm for a class of uncertain time-delay systems

为提高故障系统的性能,研究了一类时滞不确定系统的鲁棒容错控制问题.针对一类典型的线性时滞不确定系统中执行机构和敏感器发生可修复故障的情况,采用线性矩阵不等式(LMI)方法,设计一种输出反馈H∞鲁棒容错控制方法,使得系统利用余下的部件仍然能稳定工作,并满足给定系统指标.将该方法在卫星姿态闭环控制系统中进行了数学仿真验证.

The robust fault-tolerant control problem of time-delay uncertain system is studied to improve the performance of fault systems. For this class of linear uncertain time-delay systems model with actuator and sen- sor recoverable faults, a H∞ output-feedback controller solved by a linear matrix inequality （LMI） is designed to make sure the system can work steadily using the other elements and satisfy the system index. The simula- tion of an attitude control closed-loop system of satellite validates that it is effective.