一类时滞不确定系统传感器与执行器同时失效的容错控制设计

Fault tolerant control against simultaneous failures of sensor and actuator for time-delayed uncertain systems

研究线性状态时滞不确定系统传感器和执行器同时失效的容错控制问题。在Lyapunov稳定性分析的基础上,利用H∞控制设计方法和线性矩阵不等式处理方法,给出了带有时滞的状态反馈控制的设计方案。采用该方案设计的容错控制系统能够在保证系统闭环稳定的同时满足给定的H∞性能指标,而且能够减小时滞所带来的影响。通过仿真算例验证了该方法的有效性。

A fault tolerant controller was developed for uncertain time-delay systems with both sensor and actuator failures was discussed.Based on Lyapunov stability analysis and H∞ control design method,A memoryless and memory state feedback control which can decrease the influence of time delay was designed by means of the feasibility of some linear matrix inequality(LMI).The fault tolerant control system with this state feedback control can guarantee the integrity of the system together with the prescribed H∞ performance index.Simulation results on a test example are presented to validate the proposed design method.