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

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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RVDT Phase Error Compensation for Absolute Displacement Measurement

절대 변위 측정용 RVDT의 위상 오차 보상

  • 신동윤 (수원대학교 전자공학과) ;
  • 양윤기 (수원대학교 정보통신공학과) ;
  • 이창수 (수원대학교 전자공학과)
  • Published : 2006.07.01
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Abstract

RVDT is a transducer that presents rotary phase angle according to the displacement of eccentric rotor such as press machine. However a study on the phase error of RVDT that affects precision is not enough. This paper analyzes RVDT phase error and obtains compensation curves with serial or parallel resistance through simulation. First, error compensation procedure that analyses errors due to the unbalance of reference inductances of each pole and uses parallel resistance as a compensation is proposed. Second, error compensation procedure due to the amplitude unbalance of the sensor driving currents is examined by serial compensation resistance. Experimentally, we got stable RVDT with phase error under $1^{\circ}$ by the proposed method.

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References

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Cited by

  1. An Implementation of High-precision Three-phase Linear Absolute Position Sensor vol.19, pp.3, 2015, https://doi.org/10.7471/ikeee.2015.19.3.335