Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Experimental Study on Effects of Speed Error Disturbance on Reaction Wheel Control

속도 오차 외란이 반작용 휠 제어에 미치는 영향에 관한 실험적 연구

  • Kim, Jichul (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Lee, Hyungjun (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Yoo, Jihoon (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Oh, Hwasuk (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • 김지철 (한국항공대학교 항공우주 및 기계공학부) ;
  • 이형준 (한국항공대학교 항공우주 및 기계공학부) ;
  • 유지훈 (한국항공대학교 항공우주 및 기계공학부) ;
  • 오화석 (한국항공대학교 항공우주 및 기계공학부)
  • Received : 2015.11.03
  • Accepted : 2016.02.23
  • Published : 2016.03.31
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Abstract

There are many possible disturbance sources on such a spacecraft, but reaction wheel assembly (RWA) which is generally used for spacecraft attitude control is anticipated to be the largest. These effects on degradation of performance of spacecraft such as attitude stability. In reaction wheel, disturbance caused by imbalance and speed error. It is hard to emulate speed error disturbance because it is not coincide with wheel frequency. This paper concentrates on emulating and analyzing the speed error disturbance. Firstly, classify the causes that lead to speed error disturbance which generate RPM fluctuation. Secondly, simulated with disturbance driver module and reaction wheel assembly which are developed by Spacecraft Control Lab. Experimental investigations have been carried out to test the disturbance emulator module as a disturbance generator for RWA. Measurements and test have been conducted on various fault. Frequency analysis of test data show that speed error disturbance effects on wheel settling wheel speed or fluctuation type.

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References

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