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偏置动量系统中的挠性天线指向控制研究

齐春子,吕振铎   

  1. 北京控制工程研究所
  • 发布日期:1997-06-25

THE STUDY OF FLEXIBLE ANTENNA POINTING CONTROL IN MOMENTUM BIAS SYSTEM

Qi Chunzi Lü Zhenduo (Beijing Institute of Control Engineering,Beijing 100080)   

  • Published:1997-06-25

摘要: 从工程实践角度,探讨了在目前广泛采用的偏置动量轮三轴姿态稳定卫星上,进行大尺寸(3~5m)和高指向精度(0.05°)的挠性天性指向控制问题。在建立具有挠性天线的星体动力学模型,以及在借鉴和改进有关抑制挠性天线振动研究的基础上,设计了三轴稳定卫星平台上的挠性天线指向控制系统的方案。最后,根据数值仿真结果,给出了影响挠性天线指向精度的主要因素。

关键词: 挠性结构, 天线, 指向精度, 动力学方程, 数值仿真, 研究

Abstract: From engineering practice,the paper discusses the flexible antenna pointing control problem in momentum bias system which is widely used.The flexible antenna has large size(diameter from 3m to 5m)and requires high pointing precision(0 05°).After deriving the dynamic equations of the satellite with flexible antenna,and analyzing and improving the study of restraining the vibration caused by the movement of flexible antenna,the paper gives a practical method of antenna pointing control in a three axis stabilized satellite with momentum bias system.Finally,after a close loop digital simulation,the paper summarizes the main factors affecting antenna pointing precision.