The system identification method was applied to experimentally investigate the dynamic characteristics of slider-air bearings in hard disk drives. The transient responses of sliders were measured, and the modal frequencies and damping ratios that are directly related to the stiffness and damping of the bearings were obtained by data processing and parameter identification. The dynamic property of a particular advanced air bearing (AAB) slider was measured and compared with simulation results. It was found that, contrary to usual perception, the suspension assembly significantly affects the dynamic characteristics of the air bearings. Contacts between the load beam and the flexure may introduce a larger damping and nonlinear property. The preliminary results also show that the proposed method is robust for experimentally evaluating the dynamic properties of slider-air bearings.
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January 1999
Research Papers
Experimental Evaluation of Stiffness and Damping of Slider-Air Bearings in Hard Disk Drives
Q. H. Zeng,
Q. H. Zeng
Computer Mechanics Laboratory, Department of Mechanical Engineering, University of California, Berkeley, CA 94720
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D. B. Bogy
D. B. Bogy
Computer Mechanics Laboratory, Department of Mechanical Engineering, University of California, Berkeley, CA 94720
Search for other works by this author on:
Q. H. Zeng
Computer Mechanics Laboratory, Department of Mechanical Engineering, University of California, Berkeley, CA 94720
D. B. Bogy
Computer Mechanics Laboratory, Department of Mechanical Engineering, University of California, Berkeley, CA 94720
J. Tribol. Jan 1999, 121(1): 102-107 (6 pages)
Published Online: January 1, 1999
Article history
Received:
November 20, 1997
Revised:
June 20, 1998
Online:
January 24, 2008
Citation
Zeng, Q. H., and Bogy, D. B. (January 1, 1999). "Experimental Evaluation of Stiffness and Damping of Slider-Air Bearings in Hard Disk Drives." ASME. J. Tribol. January 1999; 121(1): 102–107. https://doi.org/10.1115/1.2833788
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