DOI QR코드

DOI QR Code

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

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.

Keywords

References

  1. J. Lilensten, J. Bornarel, "Space Weather, Environment and Societies", 1st Ed., Springer, Jan. 2006.
  2. Bialke, B., "High Fidelity Mathematical Modeling of Reaction Wheel Performance", in 21st Annual American Astronautical Society Guidance and Control Conference, AAS paper 98-063, 1998.
  3. Masterson, R. A. and Miller, D. W., "Development and Validation of Empirical and Analytical Reaction Wheel Disturbance Models", Thesis of Master Degree at MIT, 1998.
  4. Bosgra, J. and Prins, J. J. M., "Testing and Investigation of Reaction Wheels, in Automatic Control in Space", 9th Symposium, pp. 449-458, 1982
  5. S. Lee, D. Kim, D. Cheon, H. Oh, Y. Kim, K., Kim, "RWA Disturbance Effects on the LOS stability", Journal of Aerospace System Engineering, Vol.2, No.1, pp.13-16, Mar, 2008
  6. D. Choi, "Attitude Stability Analysis of Spacecraft on Disturbance", Thesis of Master Degree at KAU, 2012
  7. J. Kim, "Reaction Wheel Controller of Flight Model Design and Verification", thesis of Master Degree at KAU, 2012
  8. S. Beck, "Frequency Analysis of Control Disturbances in Actuators and the Development of Disturbance Emulator", thesis of Master Degree at KAU, 2015
  9. D. Cheon, E. Jang, H. Oh, "Reaction Wheel Disturbance Reduction Method Using Disturbance Measurement Table", Journal of Astronomy and Space Sciences, vol 28, Issue 4, pp. 311-317, 2011 https://doi.org/10.5140/JASS.2011.28.4.311