Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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A Study on High Agile Satellite Maneuver using Reaction Wheels and CMGs

반작용휠과 제어모멘트자이로를 이용한 위성 고기동 연구

  • Son, Jun-Won (Science & Technology Satellite Division, Korea Aerospace Research Institute) ;
  • Rhee, Seung-Wu (Science & Technology Satellite Division, Korea Aerospace Research Institute)
  • Received : 2012.07.02
  • Accepted : 2013.01.07
  • Published : 2013.02.01
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Abstract

We study three axis attitude control method including two axis high agile maneuver using four reaction wheels and two control moment gyros. We investigate singularity conditions due to two control moment gyros and propose singularity escape method. Based on this, we propose actuator control algorithm for high agile maneuver. Also, we propose actuator momentum management method which preserves momentum of reaction wheels and control moment gyroscopes before and after satellite attitude control. Through numerical simulation, we show that our method achieves three axis attitude control including two axis high agile maneuver and preserves actuators' momentum.

네 개의 반작용휠과 두 개의 제어모멘트자이로를 이용하여 2축 고기동을 포함한 3축 자세제어방법을 연구하였다. 두 개의 제어모멘트자이로 때문에 발생하는 특이점에 대해 살펴보고 특이점을 탈출하는 방법을 제안하였다. 이 결과를 토대로 고기동을 위한 구동기 제어방법을 제안하였다. 아울러 자세제어 전후의 반작용휠과 제어모멘트자이로의 모멘텀이 유지되도록 하는 구동기 모멘텀 관리방법도 제안하였다. 시뮬레이션을 통하여 설계된 제어기법이 위성의 3축 제어 및 2축에 대한 고기동을 달성하며 구동기의 모멘텀도 보전하는 것을 확인하였다.

Keywords

References

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