Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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The Development of Velocity Ripple Controller Using Active Phase Compensation

능동형 위상보정을 이용한 정밀 속도리플 제어기의 개발

  • Kang, Seok Il (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology) ;
  • Jeong, Jae Hyeon (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology) ;
  • Kim, Jung Han (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology)
  • 강석일 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 정재현 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 김정한 (서울과학기술대학교 기계시스템디자인공학과)
  • Received : 2016.07.14
  • Accepted : 2017.01.11
  • Published : 2017.04.01
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Abstract

Velocity ripple in manufacturing processes reduces productivity and limits the precision of the product. In practice, the frequency and phase of velocity ripples always change minutely, which makes it impossible to compensate for the ripple by simply inserting an opposite feed-forward signal in the system. In this study, an active-phase compensation algorithm was developed to enable the velocity-ripple controller to track the phase change of the ripples in real time. The proposed controller can compensate for the velocity ripple whatever its cause, including disturbance by the torque ripple. The algorithm consists of three functional modules: the velocity-ripple extractor, the synchronized integrator, and the phase shifter. Experimental results showed that the proposed controller clearly reduces velocity ripples with phase variation.

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References

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