한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2008년도 춘계학술대회논문집
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- Pages.856-860
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- 2008
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- 1598-2548(pISSN)
4 축 광픽업 액추에이터의 개발
Development of a 4-axis optical pickup actuator
- 김재은 (LG 전자 DS 연구소) ;
- 이경택 (LG 전자 DS 연구소) ;
- 홍삼열 (LG 전자 DS 연구소) ;
- 고의석 (LG 전자 DS 연구소) ;
- 서정교 (LG 전자 DS 연구소) ;
- 최인호 (LG 전자 DS 연구소) ;
- 민병훈 (LG 전자 DS 연구소)
- Kim, Jae-Eun ;
- Lee, Kyung-Taek ;
- Hong, Sam-Nyol ;
- Ko, Eui-Seok ;
- Seo, Jeong-Kyo ;
- Choi, In-Ho ;
- Min, Byung-Hoon
- 발행 : 2008.04.17
초록
Wire-suspensions in the conventional actuators mechanically support the moving part and guarantee the accuracy of the actuator without tangential tilt actuation. However, such a suspension configuration has considerable stiffness in the tangential tilt direction with two additional wire beams for the tangential tilt. Thus, we performed a design sensitivity analysis for the wire-suspension stiffness of 4-axis actuator and controlled the main parameters such as distance among wire-suspensions and wire-suspension length to allow tangential tilt flexibility. The elasticity of frame PCB that supports the moving part by wire-suspensions was also exploited to improve the flexibility of wire-suspension in the tangential tilt direction. A novel suspension structure was devised by establishing eight wire-suspensions at both sides of the moving part for electrical connection to coils. The magnetic circuit according to the proposed 4-axis actuator using multi-polar magnet and coils was also suggested for the generation of electromagnetic forces in the focusing, tracking, radial and tangential tilt directions.
키워드