摘要
针对商业航天器上微型星敏感器大量选用低成本、高集成度元器件可能发生的单粒子翻转(SEU)现象,提出星跟踪流程监控、程序比对校正、看门狗超时、复位类型检测等方法,利用软件手段使SEU自主恢复,同时向姿轨控分系统发送复位信息,辅助分系统根据产品状态判断是否对星敏感器采取干预操作。通过地面测试验证,应用以上方案可以有效恢复SEU产生的故障,从出现故障到发现故障的时间<19 s,从发现故障到恢复正常姿态输出的时间<0.2 s,是原先需要地面判断和控制所需时间的千分之一。在地面基站无法对卫星进行遥测遥控的情况下,上述抗SEU保障方案可为航天器上微型星敏感器发生SEU时的自主恢复提供保障。
In view of the single event upset(SEU)that may occur when a large number of low-cost and high-integration components are used in micro star sensors on commercial spacecraft,methods of monitoring the star tracking process,program comparison and correction,watchdog timeout,and reset type detection are proposed in this article.By the software approach,SEUs can be autonomously restored,while sending reset related information to the attitude&orbit control subsystem,to assist the subsystem in determining whether to intervene in the star sensor based on the product status.Ground testing verification proved that faults caused by SEUs can be effectively recovered.The time from fault occurrence to fault discovery was less than 19 s,while the time from fault discovery to restoration to normal attitude output was only 0.2 s,which was one thousandth of the time required for ground judgment and control.The above anti-SEU scheme may provide guarantee for the autorecovery from SEUs occurring in the micro star sensor on spacecraft in cases where satellite telemetry and remote control cannot be performed by ground base stations.
作者
王燕清
杜伟峰
金荷
占晓敏
钟金凤
张磊
WANG Yanqing;DU Weifeng;JIN He;ZHAN Xiaomin;ZHONG Jinfeng;ZHANG Lei(Shanghai Institute of Spaceflight Control Technology,Shanghai 201109,China)
出处
《航天器环境工程》
CSCD
北大核心
2023年第6期657-662,共6页
Spacecraft Environment Engineering
基金
国家重点研发计划项目(编号:2019YFA0706003)
上海市自然科学基金项目(编号:22YF1417000)。
关键词
微型星敏感器
单粒子翻转
星跟踪模式
流程监控
在轨编程
可靠性设计
micro star sensors
single event upset
star tracking mode
process monitoring
on-board programming
reliability design
