【摘要】 为提高再入弹头命中精度和机动突防能力,将质量滑块和单框架控制力矩陀螺(SGCMG)配合使用,以在弹头再入全过程中产生足够的姿态控制力矩.针对采用质量滑块/SGCMG复合执行机构的再入弹头,利用New-Eul-er法,建立了弹头再入动力学模型.在此基础上,利用Lyapunov稳定性理论,设计了弹头非线性姿态控制器.对某型导弹再入弹头的仿真研究表明:质量滑块/SGCMG复合执行机构可以满足弹头再入全过程的力矩需求,输出力矩误差小于0.001 5N.m;控制系统可以实现姿态角的良好跟踪,稳定跟踪误差小于0.5°,复合执行机构方案是可行的.更多还原

【Abstract】 In order to improve the impact accuracy and mobile penetration capability of reentry warhead,hybrid actuators with single control moment gyroscopes(SGCMGs)and moving masses were used to produce enough torque for attitude control during the whole reentry process.By applying the Newton-Euler ’ s method,dynamic models of the reentry warhead with hybrid actuators were derived.Then the nonlinear attitude control system was designed for warhead based on Lyapunov theory.Simulation results show that hybrid actuators can satisfy the torque demand during reentry process,and output torque error is less than 0.001 5 N·m.The control system tracks the attitude angle well,and stable tracking error is no more than 0.5°.The attitude control strategy is feasible.更多还原