弹道导弹的推力矢量控制系统设计

针对弹道导弹推力矢量控制系统的快速性和鲁棒性要求,采用变结构控制方法设计了三通道的推力矢量控制系统。建立了弹道导弹三通道姿态运动的动力学模型,将通道间的耦合项及外界干扰作为不确定项,采用了变结构控制方法进行补偿,并采用了自适应算法来更新变结构控制参数,对不确定项的上界进行估计,从而提高了控制系统的鲁棒性。仿真结果表明,所设计的推力矢量控制系统具有很好的控制效果。

Design of Thrust Vector Control System for a Ballistic Missile

Since the thrust vector control(TVC) system of a ballistic missile is required to have good speediness and robustness,a method of variable structure control(VSC) is adopted to design the three-channel TVC system.The dynamic models of attitude movement of a ballistic missile are constructed in three channels.Coupled terms among three channels and external disturbances are regarded as uncertainties,which are compensated by the VSC method.The VSC parameter is updated according to an adaptive algorithm to estimate the upper bound of uncertainties,thus the robustness of the control system is improved.Simulation results show that the designed TVC system possesses very good control effect.