Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Detection of Absolute Position for Magneto-Optical Encoder Using Linear Table Compensation

선형 테이블 보상법을 이용한 마그네틱-옵티컬 엔코더의 절대 위치 검출에 관한 연구

  • Kim, Seul Ki (School of Mechanical Engineering, Pusan National University) ;
  • Kim, Hyeong Jun (School of Mechanical Engineering, Pusan National University) ;
  • Lee, Suk (School of Mechanical Engineering, Pusan National University) ;
  • Park, Sung Hyun (Control and Measurement R&D Institute, Autonics Co., Ltd.) ;
  • Lee, Kyung Chang (Department of Control and Instrumentation Engineering, Pukyong National University)
  • 김슬기 (부산대학교 기계공학부) ;
  • 김형준 (부산대학교 기계공학부) ;
  • 이석 (부산대학교 기계공학부) ;
  • 박성현 ((주)오토닉스 제어계측연구소) ;
  • 이경창 (부경대학교 제어계측공학과)
  • Received : 2016.03.23
  • Accepted : 2016.08.23
  • Published : 2016.12.01
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Abstract

This paper presents the development of a magneto-optical encoder for higher precision and smaller size. In general, optical encoders can have very high precision based on the position information of the slate, while their sizes tend to be larger due to the presence of complex and large components, such as an optical module. In contrast, magnetic encoders have exactly the opposite characteristics, i.e., small size and low precision. In order to achieve encoder features encompassing the advantages of both optical and magnetic encoders, i.e., high precision and small size, we designed a magneto-optical encoder and developed a method to detect absolute position, by compensating for the error of the hall sensor using the linear table compensation method. The performance of the magneto-optical encoder was evaluated through an experimental testbed.

Keywords

References

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