Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Motion Control of Non-Contact Start/stop Hard Disk Drive Using Shape Memory Alloy Actuator

형상기억합금 작동기를 이용한 비접촉 시동 및 정지형 하드디스크 드라이브의 운동제어

  • Published : 2002.01.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this work, we propose a new type of HDD suspension featuring shape memory alloy (SMA) actuator in order to prevent the contact between the slider and disk. The principal design parameters are obtained from the modal analysis using finite element analysis, and then the dynamic model is established to formulate the control scheme for Non-Contact Start/stop mode drive. Subsequently, a robust H$\_$$\infty$/ control algorithm is designed by integrating experimentally-Obtained SMA actuator dynamics to the proposed HDD suspension system. The controller is empirically realized and control results for the load/unload profiles are presented in time domain. In addition, the contact signal between the slider and disk is measured by the electrical resistance method.

Keywords

References

  1. 박희성, 황정호, 좌성훈, 2000, '하드디스크 드라이브의 슬라이더 구동정지 기간 및 검색조건 변화에 따른 입자 발생 경향,' 대한기계학회논문집 B권, 제 24 권 8 호, pp. 1056-1061
  2. Cooper, D., 1996, 'Near-Contact Recording Means Clean Recording,' Data Storage, pp. 66-69
  3. Suk, M., 1999, 'Head-Disk Interface: Migration from Contact-Start-Stop to Load/Unload,' Journal of KSNVE, Vol. 9, pp. 643-651
  4. Jeong, T. G. and Bogy, D. B., 1992, 'Unload Slider Vibration Excited by Air Flow Between Slider and Rotating Disk,' IEEE Transactions on Magnetics, vol. 28, No. 5, pp. 2539-2541 https://doi.org/10.1109/20.179549
  5. Zeng, Q. H. and Bogy, D. B., 2000, 'Effects of Certain Design Parameters on Load/Unload Performance,' IEEE Transactions on Magnetics, Vol. 36, No. 1, pp. 140-147 https://doi.org/10.1109/20.824439
  6. Certain Design Parameters on Load/Unload Performance,' IEEE Transactions on Magnetics, Vol. 36, No. 1, pp. 140-147 https://doi.org/10.1109/20.824439
  7. Hashimoto, M., Kajitani, H. and Tagawa, N., 1992, 'Development of a New Sub-Sub Micron Flying Ramp-Loading Head with Emphasis on Slider Roll Control Capability,' IEEE Transactions on Magnetics, Vol. 28, No. 5, pp. 2536-2538 https://doi.org/10.1109/20.179548
  8. Tagawa, N. and Hashimoto, M., 1989, 'Self-Loading Slider Dynamics for Non-Contact Start Stop Operation With Negative Pressure Air-Lubricated Slider Bearing in Magnetic Disk Storage,' ASME Journal of Tribology, vol. 111, pp. 698-702 https://doi.org/10.1115/1.3261997
  9. Kajitani, H., Hashimoto, M. and Tagawa, N., 1991, 'Dynamic Loading Criteria for 3-1/12Inch Inline HDD Using Multilayer Piezoeletric Load/Unload Mechanism,' IEEE Transactions on Magnetics, Vol. 27, pp. 5079-5081 https://doi.org/10.1109/20.278746
  10. 최승복, 정재천, 박노준, 1995, '형상기억합금(SMA)을 이용한 지능 구조물 시스템,' 한국소음진동공학회지, 제 5 권, 제 3 호, pp. 284-291
  11. Gandhi, M. V. and Thompson, B. S., 1992, Smart Materials and Structures, Chapman & Hall, London
  12. 김정주, 전전일, 변용규, 노광춘, 정정주, 정태건, 1997, '고트랙밀도 HDD 서스펜션의 동특성 해석,' 대한기계학회논문집 A 권, 제 21 권, 제 11 호, pp. 1885-1895
  13. 임수철, 박종성, 박철진, 최승복, 박영필, 2000, 'SMA 작동기와 연계된 HDD 슬라이더의 동특성 및 제어,' 한국소음진동공학회 추계학술대회논문집, pp. 217-224
  14. Choi, S. B. and Cheong, C. C., 1996, 'Vibration Control of a Flexible Beam Using SMA Actuators,' Journal of Guidance, Control and Dynamics, Vol. 19, pp. 1178-1180 https://doi.org/10.2514/3.21761
  15. Choi, S. B. and Hwang, J. H., 2000, 'Structural Vibration Control Using Shape Memory Actuators,' Journal of Sound and Vibration, Vol. 231, No. 4, pp. 1168-1174 https://doi.org/10.1006/jsvi.1999.2637
  16. Levi, P. G. and Talke, F. E., 1993, 'Effect of Ramp Profile and Spindle Speed on Head-Disk Contact During Rotary Load/Unload,' IEEE Transactions on Magnetics, Vol. 29, No. 6, pp. 3918-3920 https://doi.org/10.1109/20.281342
  17. McFarlane, D. C. and Glover, K., 1992, 'A Loop Shaping Design Procedure Using $H_{\infty}$Synthesis,' IEEE Transactions on Automatic Control, Vol. 37, No. 6, pp. 759-769 https://doi.org/10.1109/9.256330
  18. Jeong, T. G. and Bogy, D. B., 1991, 'Measurement of Slider-Disk Contacts During Dynamic Load-Unload,' IEEE Transactions on Magnetics, Vol. 27, No. 6, pp. 5073-5075 https://doi.org/10.1109/20.278744