Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Force-To-Rebalance Mode of a Resonator Gyro and Angular Rate Measurement Tests

공진 자이로의 재평형 모드 구현과 각속도 측정 실험

  • Jin, Jaehyun (Division of Aerospace Engineering, Sunchon National University) ;
  • Kim, Dongguk (Attitude and Orbit Control Team, SaTReC (Satellite Technology Research Center), KAIST)
  • 진재현 (순천대학교 우주항공공학전공) ;
  • 김동국 (KAIST 인공위성 연구센터 자세제어팀)
  • Received : 2013.11.18
  • Accepted : 2014.04.02
  • Published : 2014.05.01
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Abstract

This article focuses on a hemispherical resonator gyro driven by the Coriolis effect. A hemispherical shell, called a resonator, is maintained in the resonance state by amplitude control and phase locking control. Parametric excitation has been used to control the amplitude. For rate measurement mode or FTR mode, nodal points have been kept to an amplitude of zero. Angular rate measurement has been demonstrated by rotating a resonator. Frequency mismatch between two stiffness principal axes is a major cause of low performance: vibrating pattern drift and reduced control effectiveness. This mismatch has been reduced significantly by the addition of small mass. A negative spring effect, which lowers resonance frequencies, has been verified experimentally.

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References

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