한국소음진동공학회논문집 (Transactions of the Korean Society for Noise and Vibration Engineering)

  • 제18권1호
  • /
  • Pages.11-19
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  • 2008
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  • 1598-2785(pISSN)
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  • 2287-5476(eISSN)
한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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곡선 서스펜션을 사용한 초소형 VCM 포커싱 구동기 개발

Development of A Small VCM Focusing Actuator Using Curved Suspensions

  • 신영철 (서강대학교 대학원 기계공학과) ;
  • 이승엽 (서강대학교 기계공학과)
  • 발행 : 2008.01.20
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초록

This paper proposes small VCM(voice coil motor) type, auto-focusing and zoom actuators for mobile information devices. In order to meet the large output displacement within small height restriction, the proposed auto-focusing actuator adopts curved suspensions, which are similar to a leaf-spring type suspension of optical disk drives. The sensitivity of design parameters on output displacement and dynamic performance is implemented using ANSYS (3D FEM tool) to determine the optimal geometry and stiffness of the curved suspensions. This paper also investigates a new zoom actuator without a suspension supporting a bobbin. The zoom actuator uses a moving rail and a stoper mechanism by generating rotational force at lens holder. Magnetic flux density of the zoom actuator are calculated by both the FEM and permeance method. Experiments using prototypes of the proposed focusing and zoom models show that both actuators meet the required displacement and performance.

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참고문헌

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  2. Kim, D.-H., et al., 2000, 'Design and Characteristic Analysis of Moving Coil type Linear Oscillatory Actuator Considering Unbalanced Magnetic Circuit', Transactions of the KIEE, Vol. 49B, No. 6, pp. 403-410
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  4. Huang, L., et al., 2002, 'Movement Interferences Analysis for Objective Lens Actuator in Optical Disc System', Sensors and Actuators A : Physical, Vol. 102, pp. 19-30 https://doi.org/10.1016/S0924-4247(02)00270-4
  5. Ko, B., Jung, J.-S. and Lee, S.-Y., 2006, 'Design of a Slim-type Optical Pick-up Actuator Using PMN-PT Bimorphs', Smart Materials and Structures, Vol. 15, pp. 1912-1918 https://doi.org/10.1088/0964-1726/15/6/047
  6. Hong, H. S., Yoo, J. H. and Lee, H. C., 2005, 'Optimal Design of the Plate Spring Suspension in an Optical Pickup Actuator', Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 15, No. 2, pp. 232-238 https://doi.org/10.5050/KSNVN.2005.15.2.232