多约束多输入拦截器姿轨一体化复合控制

An attitude and trajectory integrated compound control method with high precision and low energy consumption is proposed for the near space kinetic interceptor. Firstly, based on the kinematics and dynamics of interceptor, characteristics of actuators and the structure of full strapdown seeker, the guidance and control system model of the full strapdown attitude and trajectory compound control interceptor is established. Secondly, the mapping function including the body line-of-sight is designed using the arctangent function. Aiming at the attitude and trajectory coupling problem, combined with the high order sliding mode control, the integrated attitude and trajectory compound control law is designed to achieve multiple tasks while satisfying the body line-of-sight constraint and the impact angle constraint. Finally, the stability of the system controlled by the proposed control law is proved based on Lyapunov stability theory, and the superiority of the integrated design, the effectiveness of the mapping function's constraint and the robustness of the proposed control law are verified by simulation results.