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弹道学报  2012 

基于复合执行机构的再入弹头动力学建模与控制

Keywords: 弹头,质量矩,控制力矩陀螺,动力学,姿态控制

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Abstract:

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?Euler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0.0015N?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.

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