Adaptive variable structure control of flight control system

In this paper, a control method using sliding mode variable structure control combined with adaptive control is proposed. Based on Lyapunov stability theory, a sliding mode variable structure controller is designed to ensure that the closed-loop system is asymptotically stable in system faulty cases. Then, a modified control law is designed to cope with the situation that without knowing the upper bound of the perturbation. At last, The fault tolerant control is carried out on the fault of the system failure of the flight control system. Finally, simulation results demonstrate the feasibility and effectiveness of the proposed theory by using MATLAB software.