Improvement of high frequency dynamic performance of actuator in optical pickup by finite element and sensitivity methods

ZHANG Bu-qing; MA Jian-she; PAN Long-fa; RU Ji-gang

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Improvement of high frequency dynamic performance of actuator in optical pickup by finite element and sensitivity methods

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- Improvement of high frequency dynamic performance of actuator in optical pickup by finite element and sensitivity methods
- Optics and Precision Engineering Vol. 15, Issue 7, Pages: 1002-1008(2007)
- 作者机构：
  
  清华大学光盘国家工程研究中心北京,100084
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP333.4
- Received：03 November 2006，
  
  Revised：21 March 2007，
  
  Published Online：30 July 2007，
  
  Published：30 July 2007
- 稿件说明：
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ZHANG Bu-qing, MA Jian-she, PAN Long-fa, et al. Improvement of high frequency dynamic performance of actuator in optical pickup by finite element and sensitivity methods[J]. Optics and precision engineering, 2007, 15(7): 1002-1008.
DOI：

ZHANG Bu-qing, MA Jian-she, PAN Long-fa, et al. Improvement of high frequency dynamic performance of actuator in optical pickup by finite element and sensitivity methods[J]. Optics and precision engineering, 2007, 15(7): 1002-1008. DOI：

摘要

在分析了力矩器高频共振机理的基础上

通过有限元仿真分析

研究了影响力矩器高频动态特性的因素。采用有限元仿真和灵敏度分析相结合的方法找出各影响因素的贡献率

优化了结构设计参数。结果表明:聚焦和循迹方向的二阶共振频率分别提高了6.6%和17.5%

明显提高了力矩器的高频动态性能。该方法可以广泛应用于其它优化设计领域。

Abstract

After analysis on the high frequency resonance mechanism of a actuator in optical pickup

the effect of parameters on the high frequency dynamic performance are studied by Finite Element Emulation(FEE). The FEE together with the sensitivity analysis method are used to analyze structure parameter’s contributions to the second order resonance frequency

and then the structure is optimized. The result shows that the second resonance frequencies in the focusing and tracking directions are increased by 6.6% and 17.5% respectively

thus the dynamic performance of the lens actuator in high frequency is improved obviously. The method can also be used in other optimum design fields.

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CHENG Xue-min

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Optical Memory National Engineering Research Center, Tsinghua University

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