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

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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A Compensation Technique of the Linearity Error of Linear Variable Differential Transformer

선형변이 차동변압기 센서의 직선성오차 보정기법

  • 최주호 (국방과학연구소 계측기법연구실) ;
  • 황의성 (국방과학연구소 계측기법연구실) ;
  • 홍성수 (국방과학연구소 계측기법연구실) ;
  • 유준 (충남대학교)
  • Published : 2000.01.01
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Abstract

This paper presents the characteristics of the dynamic response and calibration technique on a linear variable differential transformer(LVDT). The linear error of the LVDT was proven $\pm$1% in the static calibration and $\pm$0.5% in the dynamic calibration. In this paper, the linearity error generated in the static and dynamic state of the core movement can be eliminated using the correction algorithem of the static and dynamic state derived from the least square linear approximation for the nonlinearity of the curves of direct data fitting and Lagrange polynomials. With the static and dynamic calibration method, the calibration accuracy of the LVDT can be reduced to within $\pm{0.5%.}$.

Keywords

References

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