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Proceedings Paper

Position tracking control of an optical pick-up device using piezoceramic actuator
Author(s): Seung-Bok Choi; HyoungKyu Kim; SooCheol Lim; Jaehwan Kim
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Paper Abstract

This paper presents a new type of an optical pick-up for CD- RIM drive feeding system. The optical pick-up is activated by a pair of bimorph piezoceramic actuators in order to achieve fine motion control of the objective lens. Following the derivation of the governing equation of motion, a control model, which takes into account the hysteresis behavior of the actuator and also parameter variation such as frequency changes, is established in a state space form. A robust controller is then formulated and experimentally realized. Various position trajectories to be followed by the optical pick-up are adopted and tracking control responses are presented in time domain. In addition, control durability is demonstrated in order to provide a practical feasibility.

Paper Details

Date Published: 19 June 2000
PDF: 7 pages
Proc. SPIE 3984, Smart Structures and Materials 2000: Mathematics and Control in Smart Structures, (19 June 2000); doi: 10.1117/12.388781
Show Author Affiliations
Seung-Bok Choi, Inha Univ. (South Korea)
HyoungKyu Kim, Inha Univ. (South Korea)
SooCheol Lim, Inha Univ. (South Korea)
Jaehwan Kim, Inha Univ. (South Korea)

Published in SPIE Proceedings Vol. 3984:
Smart Structures and Materials 2000: Mathematics and Control in Smart Structures
Vasundara V. Varadan, Editor(s)

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