Lateral Thrust and Aerodynamics Blended Control System Design Based on Variable Structure Model Following

Variable structure model following technique is applied to the synthesis of a longitudinal autopilot for a missile with lateral thrust and aerodynamics blended. Firstly, the lateral thrust and aerodynamics blended control system model and the ideal reference model are established. Secondly, a variable structure model following controller is designed, and the stability and robustness of system are analyzed. Finally, the simulation model is developed. The simulation results show that variable structure model following control system using digital control is insensitive to the variations of the plant parameters, which can follow the reference model rapidly and has high robustness. The behavior of variable structure model following control system is highly affected by the selection of the control parameters