采用带机械臂电推的GEO卫星位保和角动量卸载
Station-keeping and Angular-momentum-unloading of GEO Satellite Using Electric Propulsion with Manipulator
叶立军 1刘付成 2尹海宁 1刘春阳 1宝音贺西3
作者信息
- 1. 上海市空间智能控制技术重点实验室,上海 201109;上海航天控制技术研究所,上海 201109
- 2. 上海市空间智能控制技术重点实验室,上海 201109
- 3. 清华大学航天航空学院,北京 100084
- 折叠
摘要
地球静止轨道(简称"GEO")是重要的战略资源,高承载比、长寿命的全电推GEO卫星是发展趋势.GEO卫星需定期进行站位保持(简称"位保")和角动量卸载,而传统全电推GEO卫星多空间斜装矢量电推的控制方案,存在电推布局困难、角动量卸载能力弱、燃料消耗大、电推个数多等缺点.为解决上述问题,提出将1台电推置于机械臂末端的控制方案,通过调整电推的位置和指向,实现低燃耗位保,并利用位保推力实现大幅度角动量卸载.与传统全电推GEO卫星相比,此方案可有效解决电推布局困难的问题,将角动量卸载能力从5N-m-s提升至40 N·m·s,至少能节省燃料13.5％,并可将矢量电推数量从至少2台减少至1台.
Abstract
The geosynchronous orbit(GEO)is an important strategic resource.The all-electric propulsion(EP)GEO satellite has the characteristics of high-load-carrying-capacity and long-life,which has become a trend.GEO satellite needs regular station-keeping(SK)and angular-momentum-unloading.The current all-EP GEO satellite equipped with multi-vector EPs has the disadvantages of difficulty in layout for EPs,low angular-momentum-unloading capacity,high fuel consumption and large demand for the number of EPs.To solve the above problems,the control approach of GEO satellite using only one EP with manipulator is proposed.The SK with low fuel consumption can be achieved by adjusting the EP's position and direction,and the large amplitude angular-momentum-unloading can be achieved by using the thrust of SK.Compared to current all-EP GEO satellites,this approach can effectively solve the problem of difficult layout for EP,improve the angular-momentum-unloading capacity from 5 N·m·s to 40 N·m·s,save at least 13.5％of fuel and reduce the number of vector EPs from at least 2 to 1.
关键词
地球静止轨道/机械臂/电推/位置保持/角动量卸载Key words
GEO/Manipulator/Electric propulsion/Station-keeping/Angular-momentum-unloading引用本文复制引用
出版年
2024
NETL
NSTL
万方数据