Fixed-Time Incremental Sliding Mode Control of Aircraft with Actuator Faults

This paper investigates the fixed-time tracking control problem for aircraft attitude systems subject to actuator faults. Firstly, the fully actuated attitude control model is established for aircraft with actuator faults. Then, the incremental fully actuated attitude control model is derived to reduce the model dependency. Based on this, a fixed time sliding mode controller is designed to guarantee the fixed-time convergence of both the sliding mode vector and the tracking error. Furthermore, a fixed-time disturbance observer is designed to compensate for actuator faults. Finally, numerical simulations are conducted to validate the effectiveness of the proposed control method.