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Nonlinear Vibrations of Piezoelectric Microactuators in Hard Disk Drives
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 Title & Authors
Nonlinear Vibrations of Piezoelectric Microactuators in Hard Disk Drives
Jeong, Deok-Yeong; Lee, Seung-Yeop; Kim, Cheol-Sun;
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 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
Hard Disk Drive;Microactuator;Nonlinear Vibration;Superharmonic Resonance;Hysteresis;
 Language
Korean
 Cited by
1.
바이몰프 PZT 캔틸레버 특성평가 및 응용연구,김석삼;채영훈;권현규;

한국윤활학회지, 2003. vol.19. 3, pp.133-138
2.
유압 구동방식 타이어 롤러를 위한 유압 시스템 회로분석 및 모델링에 관한 연구,김상겸;박춘식;김정하;

대한기계학회논문집B, 2003. vol.27. 4, pp.432-439 crossref(new window)
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