时滞不确定系统的鲁棒容错控制

Robust Fault-tolerant Control of Uncertain System

研究了时滞不确定系统的鲁棒容错控制问题,就传感器失效故障和执行器失效故障两种情况,基于线性矩阵不等式(LMI)分别给出了有失效故障时闭环系统仍能渐近稳定的充分条件和控制器设计方法。该方法利用线性矩阵不等式可方便地得到容错控制器设计结果,避免了现有方法需要重复试验的过程。

This paper focuses on the problem of robust fault-tolerant control for uncertain systems with time-delay. In the circumstances of the sensor failures or the actuator failures, on the basis of the linear matrix inequality (LMI), the sufficient conditions for the systems possessing integrity against the sensor failures or the actuator failures are given, and the design method of the controller is proposed. This method can obtain the designed result of fault-tolerant controller by using the linear matrix inequality,and avoids the iterative process of the methods in existence.An illustrative example and some simulation results are given to demonstrate the effectiveness of the proposed method.