中国空间科学技术

中国空间科学技术 ›› 2018, Vol. 38 ›› Issue (3): 69-75.doi: 10.16708/j.cnki.1000-758X.2018.0027

• 技术交流 • 上一篇    下一篇

地球静止卫星电推进轨道保持策略优化

蒯政中1,2，沈红新2，李恒年2，何清波1,*   

  1. 1. 中国科学技术大学 精密机械与精密仪器系，合肥  230026
    2. 西安卫星测控中心 宇航动力学国家重点实验室，西安  710043
  • 收稿日期:2017-02-16 修回日期:2017-12-22 接受日期:2018-03-14 出版日期:2018-06-25 发布日期:2018-03-06
  • 通讯作者: 何清波（1980-），男，副教授，qbhe@ustc.edu.cn，研究方向为机械动力学与系统动态监控
  • 作者简介:蒯政中（1991-），男，硕士研究生，994061824@qq.com，研究方向为航天器控制
  • 基金资助:
    国家自然科学基金（11702330）

Optimal station keeping of geostationary satellites by electric propulsion

KUAI Zhengzhong1,2, SHEN Hongxin2, LI Hengnian2, HE Qingbo1,*   

  1. 1. Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei  230026, China
    2. State Key Laboratory of Astronautic Dynamics, Xi'an Satellite Control Center, Xi'an 710043, China
  • Received:2017-02-16 Revised:2017-12-22 Accepted:2018-03-14 Published:2018-06-25 Online:2018-03-06

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摘要： 针对电推力器控制弧段长、传统轨道保持计算常用的脉冲假设不能适用的问题，提出了静止卫星轨道保持的平运动动力学模型和长期控制策略优化方法。由于轨道保持控制的是平均轨道要素，文章提出了一种基于春分点轨道要素的高精度平根外推动力学模型，与STK-HPOP模型比对高度吻合；提出了综合考虑轨道东西和南北控制的耦合控制优化模型，设计了基于序列二次规划的优化求解方法。仿真算例中研究了二推力器配置的静止卫星4周轨道保持问题，仿真结果表明，该方法可以优化长期轨道保持控制策略。

关键词: 地球静止卫星, 轨道保持, 电推进, 优化控制策略, 序列二次规划

Abstract:

Considering the longer control arc of electric propulsion and the no longer applied assumption of impulse, a linear time-varying model for dynamics of geostationary satellite by perturbations and an optimization method for long-term control strategy were derived. A high-precision dynamical model of mean orbital elements was introduced based on equinox orbital parameters, which is highly consistent with STK-HPOP model. An optimization model considering overall orbit east-west and south-north control, and an optimization solving method based on sequential quadratic programming were proposed. In the simulation example, the problem of station keeping within 4 weeks for geostationary satellites configured with two thrusters was studied. The results show that the proposed method could be used to optimize the long-term station keeping control strategy.

Key words:

"> geostationary satellites, station keeping, electric propulsion, optimal control strategy, sequential quadratic programming