Considering the parameter uncertainty and actuator failure of hypersonic vehicle during maneuvering, this paper proposes a state observer-based hypersonic vehicle fault-tolerant control (FTC) system design method. Because hypersonic vehicles are prone to failure during maneuvering, the state quantity cannot be measured. First, a state observer-based FTC control method is designed for the linear parameter-varying (LPV) model with parameter uncertainty and partial failure of the actuator. Then, the Lyapunov function is used to demonstrate the asymptotic stability of the closed-loop system. The performance index function proved that the system has robust stability under the disturbance condition. Subsequently, the linear matrix inequality (LMI) was used to solve the observer parameters and the corresponding gain matrix in the control system. The simulation results indicated that the designed controller can track the flight command signal stably and has strong robustness, which verified the effectiveness of the design controller.

中文翻译：

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基于状态观测器的高超声速车辆LPV容错控制器设计

考虑到高超声速飞行器操纵过程中的参数不确定性和致动器故障，提出了一种基于状态观测器的高超声速飞行器容错控制（FTC）系统设计方法。由于超音速飞行器在操纵过程中容易发生故障，因此无法测量状态量。首先，针对线性可变参数（LPV）模型设计了一种基于状态观测器的FTC控制方法，该模型具有参数不确定性和执行器的部分故障。然后，使用李雅普诺夫函数来证明闭环系统的渐近稳定性。性能指标函数证明该系统在扰动条件下具有鲁棒的稳定性。随后，使用线性矩阵不等式（LMI）求解控制系统中的观测器参数和相应的增益矩阵。