Dynamic Characteristic Improvement of the Plate Spring in a 2-axis Small Sized Actuator

2축 소형 구동기 판 스프링의 동특성 개선

  • 박순옥 (연세대학교 기계공학과 대학원) ;
  • 유정훈 (연세대학교 기계공학부) ;
  • 박노철 (연세대학교 기계공학부)
  • Published : 2009.03.25

Abstract

This paper proposed an optimal plate spring design for the optical image stabilizer in mobile phones. The voice-coil motor (VCM) with plate spring is the smallest, lowest-cost solution for auto focus on the market today and it is also the simplest to implement. The VCM is selected in this paper for auto focusing. However, the design process is complex due to the many design variables coupled to each other and some constraints of each directional motion caused by the characteristics of plate spring. Because of the complex formulation of the design objective, a plate spring design is proposed through the design of experiments to find the optimal design satisfying design constraints.

Keywords

References

  1. H. Hong and J. Yoo and Ho Cheol Lee, 2005, "Optimal design of the plate spring suspension in an optical pickup actuator", Transactions of the Korea Society for Noise and Vibration Engineering, Vol.15, No.2, pp.232-238 https://doi.org/10.5050/KSNVN.2005.15.2.232
  2. Y. Y. Kim, J. H. Kim, and J. Y. Han, 1999, "A new optical pick-up suspension design", International Journal of Solid and Structure, Vol.36, No.17, pp.2541-2566 https://doi.org/10.1016/S0020-7683(98)00122-X
  3. G. W. Jung, J. W. Lee, D. –J. Lee, N. –C. Park, and Y. –P. Park, 2003, "Improvement of dynamic characteristics for optical pickup actuator using finite difference scheme and automated design synthesis", Transactions of the Korean Society of Mechanical Engineers A, Vol.27, No.12, pp.1997-2003 https://doi.org/10.3795/KSME-A.2003.27.12.1997
  4. S. –H. Yang, S. –M. Sohn, K. –T. Hong, H. –S. Lee, and B. –I. Sohn, 2005, "On-chip voice coil motor driver for mobile auto-focus camera applications", Proceedings of IEEE Asian Solid-State Circuits Conference, Vol.30, No.12, pp.101-104
  5. S. Park., 2005, "Design of Experiments", Minyongsa, pp.406-407