Lateral Thrust and Aerodynamics Blended Control System Design Based on Auto Disturbance Rejection Controller

The autopilot design method based on auto disturbance-rejection controller technique is proposed for the missile with lateral thrust and aerodynamics blended.At first,the characteristics and the main control problem for blended system are analyzed,further the three channel blended control model is established.Then,three close loops design method is proposed for the pitching channel and yawing channel of the blended control system.The inner-loop and medium-loop are designed by auto disturbance-rejection controller,which is insensitive to the variation of the plant parameters and external disturbance.The external-loop is designed by PI controller.Finally,the two close loops design method is proposed for the rolling channel,and the inner-loop and external-loop are both designed by auto disturbance-rejection controller.The simulation results show that the proposed scheme can track overload command with high precision and fast response speed,and the controller has excellent robustness performance,so it is applicable to design the autopilot of lateral thrust and aerodynamics blended missile.