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VCM 액추에이터의 전자기력을 이용한 HDD 래치 설계

A HDD Latch Design Using Electro-magnetic Force of VCM Actuators

  • 발행 : 2009.08.20

초록

Various types of latch designs for hard disk drives using load/unload mechanism have been introduced to protect undesired release motions of a voice coil motor(VCM) actuator from sudden disturbances. Recently, various inertia-type latches have been widely used because locking performance is better than that of other types of latch. However there has been a limit in the inertia type in order to guarantee perfect latch and unlatch operations because of changes in latch/unlatch conditions due to mechanical tolerance and temperature-dependent friction. In this paper, a reliable and robust magnetic latch mechanism is proposed through only simple modifications of coil and yoke shapes in order to overcome the mechanical limit of current inertia-type latches. This new magnetic latch does not have only a simple structure but it also ensures reliable operations and anti-shock performance. The operating mechanism of the proposed latch is theoretically analyzed and optimally designed using an electromagnetic simulation.

키워드

참고문헌

  1. Kim, Y. S., Kim, K. H., Lee, S. Y., Yu, S. H. and Kim, S. K., 2004, "Inertia Latch Design for Micro Optical Disk Drives," Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 14, No. 4, pp. 287-294 https://doi.org/10.5050/KSNVN.2004.14.4.287
  2. Chang, J., Monajemy, R., Pham, T., Baral, D. and Byun, Y., 2005, "Pawl Latch Mechanism Design and Control for Load/unload Technology," Microsystem Technologies, Vol. 11, pp. 747-750 https://doi.org/10.1007/s00542-005-0576-7
  3. Byun, Y., Kang, J., Chang, J., Sharma, V. and Lee, H. J., 2002, "Impact Rebound Type Inertia Latch for Load/unload Technology," Microsystem Technologies, Vol. 8, pp. 37-40 https://doi.org/10.1007/s00542-001-0118-x
  4. Albrecht, T. R. and Sai, F., "Load/Unload Technology for Disk Drives," IEEE Transactions on Magnetics, Vol. 35, pp. 857-862 https://doi.org/10.1109/20.753798
  5. Kim, K. H., Hong, M. P., Kim, Y. S. and Kim, Y. J., 2008, "Automatic Latch System Using Electromagnetic Force of VCM Actuator," Samsung Electronics Co., No. P2008-0016983
  6. Kim, K. H., Oh, D. H., Kim, Y. S., Hong, M. P. and Kim, Y. J., 2008, "Automatic Latch System Using Electromagnetic Force of VCM Actuator," Samsung Electronics Co., Korea Patent No. P2008-0070191

피인용 문헌

  1. Design of Rotating Moving-Magnet-Type VCM Actuator for Miniaturized Mobile Robot vol.37, pp.12, 2013, https://doi.org/10.3795/KSME-A.2013.37.12.1529
  2. Design of Electromagnetic Moving-coil type Voice Coil Motor for Scanning mirror of Barcode reader vol.40, pp.1, 2016, https://doi.org/10.3795/KSME-A.2016.40.1.017