This article investigates fault detection, isolation and fault-tolerant control for an over-actuated system in hypersonic re-entry vehicle with concurrent actuator faults and disturbance. A series of residuals developed by spatial projection operators is only sensitive to certain faults that can decouple the effects of faults in different directions. Threshold intervals designed through sliding-time windows and a hypothesis test are used to detect faults. Single and concurrent fault isolation can be achieved by utilizing different residual combinations. Subsequently, an augmented observer is introduced to estimate the faults and satisfies the $L_2$-gain constraint to reduce the effect of disturbances. Finally, an adaptive backstepping fault-tolerant control algorithm is designed to achieve stable attitude tracking. The stability of the proposed schemes is proved by Lyapunov and linear matrix inequality theories. Numerical simulation results demonstrate the effectiveness of the proposed methods.

本文研究了高超声速再入飞行器中同时存在执行器故障和干扰的过驱动系统的故障检测，隔离和容错控制。空间投影算子产生的一系列残差仅对某些断层敏感，这些断层可以使断层在不同方向上的影响解耦。通过滑动时间窗和假设检验设计的阈值间隔用于检测故障。可以通过利用不同的残差组合来实现单个故障和并发故障的隔离。随后，引入了增强的观测器以估计故障并满足${\mathrm{大号}}_{\mathrm{2个}}$-增益约束以减少干扰的影响。最后，设计了一种自适应反步容错控制算法，以实现稳定的姿态跟踪。Lyapunov和线性矩阵不等式理论证明了所提方案的稳定性。数值仿真结果证明了所提方法的有效性。