基于降维观测器的系统最优容错控制

Optimal fault-tolerant control designed for systems based on the reduced order observer

针对含有传感器故障的线性连续系统,利用Riccati矩阵方程设计了故障情况下的动态最优容错控制律,并设计了能同时检测出系统状态和故障状态的增广的降维故障检测器,从而实现了系统的故障检测和容错控制并能满足二次型性能指标。仿真实例验证了这种方法简单有效。

Based on the Riccati matrix equation, a dynamic optimal fault-tolerant control law is designed for linear continuous systems with sensor faults. An augmented reduced order fault observer is also designed to detect the system status and the sensor fault state at the same time, thus realizing the fault detection and the fault-tolerant control of the system and finding satisfication in the quadratic performance index. The simulation has proved this method to be simple and effective.