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Proceedings Paper

A novel high-speed optical scanning platform
Author(s): Yea-Chin Yeh; Jia-Yush Yen; Jyh-Fa Lee; Yung-Hao Peng
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Paper Abstract

Recent advancements in precision engineering have promoted the use of high precision servo mechanism to enhance optical system performance. Present servo mechanisms are able to aid the optical resolution by driving the scanning mirrors to achieve higher resolutions than the traditional imaging systems. To compete with the still imaging systems, the servo mechanisms must achieve very high operation speeds while maintaining highly accurate positioning. This paper introduces a novel, high speed, high precision servo mechanism for the optical scanner. The proposed design uses piezoelectric transducers (PZT) with flexure joints in place of the conventional servo motor drive. The arrangement does not suffer from the backlash problem or the problem with slipping during starting. The study uses the dynamics simulation and finite element analysis (FEA) software for simulation and analysis. The FEA results provide information for the structural prosperities such as the vibration modal type, resonance frequencies, steady state deformation... etc. The analytical data then provide the basis to derive a system model for control synthesis. The dynamic simulation of the control system is accomplished by an integration of the control software with the FEA software. The control output updates the FEA results at every frame time during the simulation. The dynamic simulation results provide all the useful physical properties of the mechanism for prototype design references.

Paper Details

Date Published: 10 February 2005
PDF: 10 pages
Proc. SPIE 5638, Optical Design and Testing II, (10 February 2005); doi: 10.1117/12.575488
Show Author Affiliations
Yea-Chin Yeh, National Taiwan Univ. (Taiwan)
Jia-Yush Yen, National Taiwan Univ. (Taiwan)
Jyh-Fa Lee, Chung-Shan Institute of Science and Technology (Taiwan)
Yung-Hao Peng, National Taiwan Univ. (Taiwan)

Published in SPIE Proceedings Vol. 5638:
Optical Design and Testing II
Yongtian Wang; Zhicheng Weng; Shenghua Ye; Jose M. Sasian, Editor(s)

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