• 高分七号专栏 •

高分七号卫星高精度控制技术与验证

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
• Online:2020-10-25 Published:2020-09-30

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.