Sliding Mode Controller for Missile Systems under Uncertain Disturbances

Sliding mode control (SMC) because of its significant robustness. To ensure the stability of the missile system under uncertain disturbances, a sliding mode controller is thus constructed. Firstly, a sliding mode observer (SMO) is designed to estimate the state vector of the system. Subsequently, based on the state estimation, a sliding mode controller is constructed, and its validity is proven by the Lyapunov theorem. Compared with other controllers, the designed controller improves the robustness of the system and simplifies the sliding mode controller design, which is easier to implement in practical engineering. Finally, the SIMULINK model of the missile rigid-body system is established, and simulation experiments are carried out. The simulation results verify the effectiveness and practicality of the controller, thereby providing a universal scheme for the anti-disturbance and automatic control of other industrial devices.