宇航学报

宇航学报 ›› 2019, Vol. 40 ›› Issue (9): 1051-1060.doi: 10.3873/j.issn.1000-1328.2019.09.009

• 制导、导航、控制与电子 • 上一篇    下一篇

椭圆轨道卫星对地全球覆盖电推进控制

马雪，刘羽白，雷拥军，田科丰，陆栋宁，辛优美   

  1. 1. 北京控制工程研究所，北京 100094；2. 空间智能控制技术重点实验室，北京 100094
  • 收稿日期:2018-08-10 修回日期:2019-01-15 出版日期:2019-09-15 发布日期:2019-09-25
  • 基金资助:

    国家自然科学基金（11502017）

Global Coverage Control Using Electric Propulsion for Elliptical Orbit Satellites

MA Xue, LIU Yu bai, LEI Yong jun, TIAN Ke feng, LU Dong ning, XIN You mei   

  1. 1. Beijing Institute of Control Engineering, Beijing 100094, China; 2. Science and Technology on Space Intelligent Control Laboratory, Beijing 100094, China
  • Received:2018-08-10 Revised:2019-01-15 Online:2019-09-15 Published:2019-09-25

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摘要：

针对椭圆轨道卫星近/远地点的星下点对全球或特定纬度区域的访问问题，提出一种连续小推力下的对地覆盖控制策略。首先，推导了自然摄动对卫星拱线变化的影响，并探讨了进行小推力覆盖控制的必要性。然后，针对燃料消耗的优化问题，将控制方程展开成含傅里叶级数的形式，用以获得便于星上计算的解析形式的次优解，同时探讨了截取阶数与优化程度的关系。在进行拱线控制的同时，通过合理设置约束，对椭圆轨道的近地点高度进行保护，确保卫星安全运行。仿真结果表明，提出的方法能够以适当的燃料消耗代价实现椭圆轨道的近/远地点的全球覆盖控制或特定纬度区域的反复推扫，且控制力在可接受的范围内。

关键词: 椭圆轨道, 星下点, 轨道维持, 电推进, 小推力控制

Abstract:

 In most cases, the payloads on the elliptical orbit satellites tend to work near the apogee or perigee. The ground point of the apogee/perigee changes slowly under the nature perturbations, hence it is hard to complete the global coverage within the required time. In this paper, a continuous low-thrust method is proposed to control the orbital apsidal motion, so the period of global coverage could be changed artificially. By designing the control strategy and selecting the reasonable truncation order of the parameters, an analytic suboptimal solution is presented. And meanwhile, the altitude of the perigee is protected to ensure the satellite security. The simulation results indicate that the method in this paper is effective to control the global coverage period, and the fuel consumption and control force are in the reasonable ranges.

Key words:  Elliptical orbit, Subastral point；Station keeping；Electric propulsion；Low-thrust control

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