Share Email Print
cover

Proceedings Paper

Analytic solution for damping coefficients of six-wire-suspension actuator in optical pickup
Author(s): Buqing Zhang; Jianshe Ma; Longfa Pan; Xuemin Cheng; Lei Zhong
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The lens actuator is one of the most important mechanical-electrical components in optical disc systems. It is used for adjusting the attitude and position of the objective lens. When it works, the resonance vibration including the first resonance and higher order resonance will happen near the resonance frequency, which will weaken the servo control capability, thus additional damper glue is necessary to restrain the resonance magnitude. In order to obtain better damping performance, the location of the damper glue and the structure of the damping filler are very important to control the resonance magnitude. In this paper, according to the flow feature of the damper glue, damping models in focusing, tracking and tilting direction are established with the help of Oseen flow equation, and equivalent damping coefficients are derived. Some samples with the design parameters are fabricated and tested, the damping coefficients obtained form the experiment are compared with the theoretical results, which shows the validity of the proposed fluid model and the design method.

Paper Details

Date Published: 19 March 2009
PDF: 6 pages
Proc. SPIE 7125, Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, 71252B (19 March 2009); doi: 10.1117/12.820590
Show Author Affiliations
Buqing Zhang, Tsinghua Univ. (China)
Jianshe Ma, Tsinghua Univ. (China)
Longfa Pan, Tsinghua Univ. (China)
Xuemin Cheng, Tsinghua Univ. (China)
Lei Zhong, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 7125:
Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage
Fuxi Gan, Editor(s)

© SPIE. Terms of Use
Back to Top