The invention provides an intelligent orbit maintenance control method and system for an ultra-low orbit satellite. The intelligent orbit maintenance control method comprises the following steps: calculating an orbit flat semi-major axis deviation delta a and a descending node position deviation delta L; calculating a control coefficient K according to the orbit flat semi-major axis deviation delta a and the descending node position deviation delta L; calculating deviation threshold values ha and hL according to the control coefficient K; and whether the deviation delta a exceeds a deviation threshold value ha or whether the deviation delta L exceeds a deviation threshold value hL is judged, if yes, a control instruction of the propeller is calculated according to the orbit flat semi-major axis deviation delta a, the descending node position deviation delta L and the control coefficient K, and if not, the control instruction of the propeller is zero. According to the method, intelligent and autonomous orbit height maintenance control can be realized when the satellite operates in orbit, and the orbit maintenance precision can be remarkably improved, so that fuel of a propeller carried by the satellite is saved, and the in-orbit service life of the satellite is prolonged.
本发明提供了一种超低轨道卫星的智能维轨控制方法及系统,包括如下步骤:计算轨道平半长轴偏差Δa和降交点位置偏差ΔL;根据所述轨道平半长轴偏差Δa和所述降交点位置偏差ΔL,计算控制系数K;根据所述控制系数K,计算偏差阈值ha、hL;判断“偏差Δa是否超过偏差阈值ha”或“偏差ΔL是否超过偏差阈值hL”,若超过,则根据所述轨道平半长轴偏差Δa、所述降交点位置偏差ΔL以及所述控制系数K计算推进器的控制指令,否则,推进器的控制指令为零。本发明可使卫星在轨运行时实现智能自主的轨道高度维持控制,并且可使轨道维持的精度得到显著提高,从而节省卫星携带的推进器燃料,延长卫星在轨寿命。
Intelligent orbit maintenance control method and system for ultra-low orbit satellite
超低轨道卫星的智能维轨控制方法及系统
2023-08-08
Patent
Electronic Resource
Chinese
IPC: | B64G Raumfahrt , COSMONAUTICS |
Method for autonomously maintaining orbit height of ultra-low orbit satellite
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