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Micro-position Control of a Piezostack Actuator Using Rate-Dependent Hysteretic Compensator
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  • Micro-position Control of a Piezostack Actuator Using Rate-Dependent Hysteretic Compensator
  • Micro-position Control of a Piezostack Actuator Using Rate-Dependent Hysteretic Compensator
저자명
Nguyen. Phuong-Bac,Choi. Seung-Bok
간행물명
International journal of precision engineering and manufacturing
권/호정보
2011년|12권 5호|pp.885-891 (7 pages)
발행정보
한국정밀공학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

This paper presents a new model for hysteresis compensation of a piezostack in order to improve position control accuracy. After establishing the hysteretic relationship between output displacement of the piezostack actuator and input voltage by adopting Preisach model, a rate-dependent hysteretic compensator proposed in this work is formulated. The proposed compensator consists of two components: a rate-independent hysteresis cascaded with a dynamic component. From the first component, a compensator is designed based on the inverse Preisach model. And then, the dynamic component is eliminated using a nonlinear lag controller. In order to tune this controller, a root least square (RLS) inverse identification method is used. In order to demonstrate the effectiveness of the proposed hysteretic compensator, micro-position control performances are experimentally evaluated in time domain. Control performances are evaluated upon three different input voltage conditions: constant frequency, chirp and random waveforms. In addition, a comparative work between the proposed compensator and conventional rate-independent compensator is undertaken.