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

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

DOI QR Code

Nonlinear Vibrations of Piezoelectric Microactuators in Hard Disk Drives

하드디스크 드라이브용 압전형 마이크로 액추에이터의 비선형 진동 특성

  • Published : 2001.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

Nonlinear vibration characteristics of a piezoelectric-type micro actuator used for hard disk drives are experimentally studied. The nonlinear characterisitics include hysteresis, superharmonic resonance, jump phenomenon, and shifting of natural frequencies. The vibration modes and frequencies of the commercial actuator of the Hutchinson's Magnum series are measured using a laser vibrometer. From harmonic excitation to the PZT acturator, we observe interesting hysteresis patterns with 3 times input frequency. It is shown that the micro actuator has the typical 3 times superhamonic resonances coupled to the first torsional and sway modes of the suspension.

Keywords

References

  1. 이승엽, 1997, '하드 디스크 드라이브의 개발 동향과 고밀도 구현을 위한 기계적 진동 영향,' 대한기계학회지, 37권 4호, pp. 35-42
  2. McInerney, B., 2000, 'Surveying MicroPositioning Technology for Advanced Disk Drivers,' Data Storage, August, pp. 24-27
  3. Evans, R. B., Griesbach, J. S. and Messner, W. C., 1999, 'Piezoelectric Microactuator for Dual Stage Control,' IEEE Trans. on Mag., Vol. 35, No. 2, pp. 997-982 https://doi.org/10.1109/20.753819
  4. Niu, Y., Guo, W., Guo, G., Ong, E. H. and Huang, T., 1999, 'Piezoelectrically Actuated Suspension for Hard Disk Drives,' Journal of Information Storage and Processing System, Vol. 1, pp. 321-327
  5. Uchino, K., 1997, Piezoelectric Actuators and Ultrasonic Motors, Kluwer Academy Publishers
  6. 김정주, 전정일, 변용규, 노광춘, 정정주, 정태건, 1997, '고트랙밀도 HDD 서스펜션의 동특성 해석,' 대한기계학회논문집, 21권 11호, pp. 1885-1895
  7. Adriaens, J. de Koning, W. and Banning. R., 1997, 'Design and Modeling of a Piezo-Actuated Positioning Mechanism,' IEEE Conf. on Decision & Control, pp. 1978-1983 https://doi.org/10.1109/CDC.1997.657891
  8. Nayfeh, A. H. and Mook. D. T., 1979, Nonlinear Oscillations, John Wiley & Sons