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针对高超声速飞行器再入过程中可能出现的执行器部分失效或卡死故障,设计了一种飞行器自适应容错控制器。在系统存在外界干扰及未知故障输入且上界未知的情况下,该控制器采用自适应算法在线估计未知的控制器参数,在执行器发生卡死或部分失效故障时,实现了对故障的容错控制和对制导指令的鲁棒输出跟踪。通过Lyapunov方法证明了该方法在执行器存在故障时能保证系统渐进稳定,仿真算例说明了该方法的有效性。
Aiming at the partial failure or jamming of the actuator that may occur during the reentry of the hypersonic vehicle, an adaptive fault tolerant controller is designed. In the presence of external disturbances and unknown fault inputs and unknown upper bounds, the controller uses an adaptive algorithm to estimate unknown controller parameters online. Fault tolerance is achieved when the actuator is stuck or partially failed Control and robust output tracking of guidance instructions. The Lyapunov method is used to prove that the proposed method can ensure the asymptotic stability of the system in the presence of actuator failure. Simulation results show the effectiveness of the proposed method.