Decentralized Adaptive Sliding Mode Decoupling Control Scheme for Bank-to-turn Missile

For the strong kinematic,pneumatic and inertia coupling among three channels of bank-to-turn(BTT)missile,a decentralized adaptive sliding mode control scheme is proposed.Based on the idea of decentralized control,the BTT missile control system is divided into three associated subsystems.A model reference adaptive sliding mode controller based on the local measurement was designed for each subsystem.Considering the conjunction of the three channels,a coordination loop was designed and the parameters of local decentralized controllers were regulated to guarantee the global asymptotic stability and realize the decoupling control.The adaptive sliding mode controller has strong adaptability and robustness for the modeling uncertainty and the pneumatic parameter variation under a high angle of attack flight condition.Compared to traditional decoupling control method,the decentralized control does not need extra measurement of the coupled item,which is beneficial to the practical application.The simulation results demonstrate that the system tracks the maneuver commands well and satisfies the requirements of BTT control.