基于磁力矩器的GEO卫星角动量卸载方法

Angular Momentum Unloading Method for GEO Satellite Based on Magnetorquer

针对GEO卫星的角动量卸载,提出了利用磁力矩器进行卸载的方法.对静止轨道上地球磁场强度进行了分析,对于中国上空的静止轨道区域,静止轨道的磁场主要在卫星Y方向即南北方向,其次在X方向.对开关式磁力矩器的卸载方案进行了研究,列出了卸载需要满足的方程,对方程的解进行了讨论.最后,提出了磁卸载的四个工作模式并进行了仿真,证明该卸载方法具有良好的适用性.

Aiming at the angular momentum unloading of GEO satellite,a method of using magnetorquers to unload is proposed. The geomagnetic field intensity in geostationary orbit is analyzed. For the geostationary orbit over China,the geomagnetic field is mainly in the Y direction of satellite,i.e. the North-South direction,secondly is in X direction. The angular momentum unloading strategy using switched magnetorquer is analyzed. The equation needed to be satisfied for unloading is listed,and the solution of the equation is discussed. Finally,four modes of magnetic unloading are proposed and simulated,which proves that the unloading method has good applicability.