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Analysis and Reduction of Subsidiary Resonance of an Optical Pickup Actuator
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 Title & Authors
Analysis and Reduction of Subsidiary Resonance of an Optical Pickup Actuator
Seo, Jin-Gyu; Jeong, Ho-Seop; Park, Gi-Hwan;
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 Abstract
An asymmetric actuator can be used to reduce the distance between the reflective mirror and objective lens of a small optical disk drive for use in the notebook-sized personal computer data storage devices. However, this asymmetric actuator is very sensitive to the subsidiary resonance which is caused by its rigid body motion. In this paper, an analytical approach using a simple lumped parameter system model is presented with a physical insight to investigate why the subsidiary resonance occurs. The finite element method is used to figure out the force and torque characteristics of the asymmetric actuator which are essential to understand the subsidiary vibration characteristics. The frequency responses are presented to examine how the subsidiary resonance is altered for various situations of having different thickness of a yoke and permanent magnet and of having a different magnet circuit. Finally, the design guidelines to avoid the subsidiary resonance will be presented
 Keywords
Optical Pickup Actuator;Subsidiary Resonance;Leakage Flux;Edge Effect;Servo Bandwidth;
 Language
Korean
 Cited by
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유한차분법과 ADS(Automated Design Synthesis)를 이용한 광픽업 액추에이터의 동특성 개선,정기원;이진우;이동주;박노철;박영필;

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2.
자동차용 CD/DVD 데크의 진동 저감 및 성능 향상에 관한 연구,박영필;정두한;정진태;

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진동신호분석을 통한 광디스크 드라이브의 고장원인분석,박영필;신창호;정진태;

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광디스크 드라이브용 3축 초박형 액추에이터의 동특성 분석,김세원;조태민;이주형;진경복;임경화;

대한기계학회논문집A, 2005. vol.29. 4, pp.624-631 crossref(new window)
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