摘要
从不确定线性离散控制系统的传感器或／和执行器等部件极易发生故障的实际情况出发,对这 类控制系统的鲁棒容错控制器设计问题作了研究。在假设传感器和执行器同时发生故障的情况下,基于 状态反馈思想和H∞鲁棒控制理论,通过求解一个代数Riccati方程得到H∞鲁棒容错状态反馈控制律。因 此,由该设计方法得到的控制律同样适用于传感器和执行器分别出现故障的情况。并通过仿真实例来验 证该H∞鲁棒容错控制律不仅对不确定性和扰动具有H∞鲁棒性能,而且对传感器或／和执行器故障具有 容错性能,从而说明该控制器设计方法的正确性和有效性。
Aiming at the situation that the sensor or/and the actuator may fail in the uncertain linear discrete system, a design method of robust fault-tolerant controller based on state feedback is proposed using robust control theory. This method is introduced on the assumption that the sensor and the actuator may fail at the same time. This method is also applicable to the situation where the sensor or the actuator fails separately. The controller obtained by using this method not only has the robustness for uncertainty and disturbance but also possesses the property of fault-tolerance for the sensor or/and the actuator failures. Simulation results demonstrate that the method provides a simple and effective solution to the problem of robust fault-tolerant for a class of uncertain linear discrete system.
出处
《桂林电子工业学院学报》
2005年第6期41-44,共4页
Journal of Guilin Institute of Electronic Technology
