中国空间科学技术

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利用地磁场给飞轮卸载的新方法

李太玉,张育林   

  1. 国防科技大学航天与材料工程学院,国防科技大学航天与材料工程学院 长沙410073 ,长沙410073
  • 发布日期:2001-12-25

A New Method of Momentum Unloading Utilizing Geomagnetic Field

Li Taiyu Zhang Yulin (Inst.of Aerospace and Material Engineering,National Univ. of Defense Technology,Changsha 410073)   

  • Published:2001-12-25
  • Supported by:
    “8 6 3 - 2”资金资助

摘要： 通过对圆轨道地磁场强度的变化规律分析 ,将卫星磁力矩器产生的磁矩按傅立叶级数展开 ,根据卫星所需卸载角动量大小 ,按照最优控制理论求出三轴磁矩取值 ,得出飞轮卸载控制律。最后文章给出飞轮卸载稳定性分析和仿真结果 ,表明这种飞轮卸载方法简单而且省能量。

关键词: 卫星姿态, 磁控制, 飞轮卸载, 方法

Abstract: Firstly the dynamic characteristic of geomagnetic intensity in a circular is analyzed.Then the magnetic dipoles produced by magnetorquer are expanded in Fourier series. On the basis of the sum of unloaded angular momentum,the magnetic dipoles are figured out according to the theory of optimal control.The stability of control low and simulations are given,which shows the method is simple and the energy can be saved very much.