한국생산제조학회지 (Journal of the Korean Society of Manufacturing Technology Engineers)

  • 제21권2호
  • /
  • Pages.324-330
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  • 2012
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  • 2508-5093(pISSN)
  • /
  • 2508-5107(eISSN)
한국생산제조학회 (The Korean Society of Manufacturing Technology Engineers)
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압전 소자 기반 구동 유닛의 히스테리시스 보상 강인 제어기 설계

A Robust Control System Design for Compensating Hysteresis of a Piezoelectric Actuator-based Actuation Unit

  • 김화수 (경기대학교 기계시스템공학과) ;
  • 김종원 (서울대학교 기계항공공학부)
  • 투고 : 2011.10.18
  • 심사 : 2011.12.27
  • 발행 : 2012.04.15
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초록

In this paper, we presents a robust control system design for compensating hysteresis of a piezoelectric actuator-based actuation unit. First, the dynamics between the input voltage and the output displacement of the actuation unit are unravelled via a non-parametric system identification method. From the dynamic characteristics of those experimental transfer functions, a parametric model is then derived, whose dynamics match those of the non-parametric ones under various conditions on input voltages. A robust controller is constructed on the basis of this parametric model in order not only to effectively compensate the hysteresis of the actuation unit but also to guarantee the robust stability. Extensive experiments show that the proposed robust control system successfully mitigate the effect of the hysteresis and improve the tracking capability of the actuation unit.

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참고문헌

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