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针对航天器在轨运行时受到外部干扰以及存在执行机构部分失效故障的问题,提出一种基于自适应滑模控制的鲁棒容错控制方法.该方法利用自适应算法估计执行机构故障的最小值,并通过设计滑模变结构控制器来实现对故障的容错控制以及对干扰的抑制控制,无需精确获得执行机构故障值,从而使得设计的控制器对于故障具有一定的鲁棒性.仿真结果表明了该方法对于姿态调节过程中执行机构部分失效故障具有较强的容错能力.
Aiming at the problem that the spacecraft is subjected to external disturbance during on-orbit operation and there is a partial failure of the actuator, a robust fault-tolerant control method based on adaptive sliding mode control is proposed. This method uses adaptive algorithm to estimate the minimum actuator failure, The design of sliding mode variable structure controller to achieve fault-tolerant control and interference suppression control, without the need to accurately obtain the actuator fault value, so that the design of the controller has some robustness to failure.The simulation results show that The method has strong fault tolerance for partial failure of actuator during attitude adjustment.