Design of servo system robust controller for multiple launcher

This paper designs a robust controller to ensure that the control tracking performance of the multiple launcher servo system maintain robustness under the influence of the parameter perturbation and uncertain disturbance. First the system differential dynamic model with parameter perturbation and disturbance is established, state equation of error between the reference model and the system is deduced. Second, robust controller is designed according to the system error, the robust control system is proved to be global stable by Lyapunov theorem. Last, the paper makes simulation, the simulation result of robust controller is compared with that of PID controller, and comparison shows robust controller has better robustness than PID controller for multiple launcher servo system.