Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Error in Incremental Encoder Due to Vibration and Its Solution

증분 엔코더에서 발생하는 진동에 의한 에러와 해결방안에 관한 연구

  • 남윤수 (강원대학교 기계/메카트로닉스 공학부) ;
  • 박해균 (강원대학교 기계/메카트로닉스공학부 메카트로닉스)
  • Published : 2008.06.01
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Abstract

Incremental encoder is a common choice for measuring the rotational angle of an axis. It produces, however, some measurement errors, if some kinds of rotational vibration are occurred. Even by increasing the number of slits on the circular peripheral, these kinds of error can not be removed. It only decreases the probability of the error being generated by making the magnitude of encoder resolution smaller than that of the axial vibration. This paper investigates the error mechanism of incremental encoder and suggests a digital logic circuit that prevents the measurement error to happen.

Keywords

References

  1. Hitachi, Ltd., "Data sheet HD74LS74A, Dual D-type Positive Edge-triggered Flip-Flops(with preset and Clear)," 1999
  2. Lee, M. Y. and Chang, I. B., "Displacement Measurement by Laser Interferometer," KSME Regional Meeting, pp. 74-77, 2006
  3. Bolton, W., "MECHATRONICS Second Edition," SciTech Media, Inc., pp. 16-60, 2000
  4. Ekekwe, N., Etienne-Cummings, R. and Kazanzides, P., "Incremental Encoder Cased Position and Velocity Measurements VLSI Chip with Serial Peripheral Interface," Circuits and Systems, ISCAS IEEE International Symposium, pp. 3558-3561, 2007
  5. Luong-Van, D., Tordon, M. J. and Katupitiya, J., "Convariance progiling for an adaptive Kalman filter to suppress sensor quantization effects," Decision and Control, CDC. 43rd IEEE Conference, pp. 2680-2685, 2004
  6. Merry, R., van de Molengraft, R. and Steinbuch, M., "Error modeling and improved position for optical incremental encoders by means of time stamping," American Control Conference (ACC), pp. 3570-3575, 2007
  7. Ross, J. N. and Taylor, P. A., "Incremental digital position encoder with error detection and correction," Electronics Letters, Vol. 25, No. 21, pp. 1436-1437, 1989 https://doi.org/10.1049/el:19890959