中国空间科学技术

中国空间科学技术 ›› 2020, Vol. 40 ›› Issue (5): 34-41.doi: 10.16708/j.cnki.1000-758X.2020.0056

• 高分七号专栏 • 上一篇    下一篇

高分七号卫星高精度控制技术与验证

陈超，丁建钊，王淑一，刘洁   

  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
  • 出版日期:2020-10-25 发布日期:2020-09-30
  • 基金资助:
    民用航天“十三五”预研项目（D020213）

Highprecision control technology and onorbit verification of GF-7 satellite

CHEN Chao，DING Jianzhao，WANG Shuyi，LIU Jie   

  1. 1.Beijing Institute of Control Engineering, Beijing100094， China
    2.Science and Technology on Space Intelligent Control Laboratory, Beijing100094， China
  • Published:2020-10-25 Online:2020-09-30

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摘要： 高分七号卫星（GF-7）控制系统，一方面通过研制甚高精度星敏感器和高平稳度翼板驱动机构（SADA），提高部件性能指标；另一方面采用在轨参数标定、星地闭环补偿等控制技术，进一步提高系统性能。经飞行验证表明，控制系统实现了角秒级姿态测量精度，稳定度达到10-5(°)/s量级，与同类型测绘卫星控制系统比较，姿态测量精度和稳定度均达到中国领先、国际先进的水平，使中国遥感测绘卫星控制能力得到了大幅提升。最后展望了GF-7卫星控制分系统进一步提高控制精度的发展方向。

关键词: GF-7卫星, 高精度控制, 姿态确定, 体系结构, 在轨验证, 星敏感器, 翼板驱动机构

Abstract:  The performance of GF-7 satellite attitude and orbit control system (AOCS) is improved by developing new very high precision star sensor and solar array driver architecture (SADA). The precision of AOCS is improved by adopting on-board parameter calibration and low frequency compensation between satelliteground loop technologies. The result of flight test shows that the control system achieves the angular-second highprecision accuracy and the control stability is expected to be within 10-5(°)/s, which indicates the control methods are effective. Compared with other control systems of satellites, the system of GF-7 satellite is advanced in the world which has improved the ability of highprecision control of satellites in China. At the end of this paper, the development direction of GF-7 highprecision control is pointed out.

Key words: GF-7 satellite, high-precision control, attitude determination, system architecture, onorbit test, star sensor, solar array driver architecture (SADA)