Vibration and noise in a HDD spindle motor originated from the axial asymmetry of magnetic design

S. J. Sung, G. H. Jang, J. W. Jang, J. Y. Song

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This research investigates numerically and experimentally the characteristics of axial unbalanced magnetic force (UMF) due to axial asymmetry of magnetic design in the spindle motor of a hard disk drive, and its effect on the acoustic noise and vibration. It shows that the least common multiple (LCM) harmonic of pole and slot of the acoustic noise and vibration are originated from axial UMF. It also shows experimentally that the axially balanced magnetic design can minimize the LCM harmonics in acoustic noise and vibration.

Original languageEnglish
Title of host publication2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference
Subtitle of host publicationA Strong Tradition. An Exciting New Look!
StatePublished - 2012 Dec 1
Event2012 Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!, APMRC 2012 - Singapore, Singapore
Duration: 2012 Oct 312012 Nov 2

Publication series

Name2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!

Other

Other2012 Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!, APMRC 2012
CountrySingapore
CitySingapore
Period12/10/3112/11/2

Fingerprint

Acoustic noise
Vibrations (mechanical)
Hard disk storage
Poles

Keywords

  • Axial asymmetry
  • HDD spindle motor
  • axial UMF
  • noise
  • vibration

Cite this

Sung, S. J., Jang, G. H., Jang, J. W., & Song, J. Y. (2012). Vibration and noise in a HDD spindle motor originated from the axial asymmetry of magnetic design. In 2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look! [6407358] (2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!).
Sung, S. J. ; Jang, G. H. ; Jang, J. W. ; Song, J. Y. / Vibration and noise in a HDD spindle motor originated from the axial asymmetry of magnetic design. 2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!. 2012. (2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!).
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abstract = "This research investigates numerically and experimentally the characteristics of axial unbalanced magnetic force (UMF) due to axial asymmetry of magnetic design in the spindle motor of a hard disk drive, and its effect on the acoustic noise and vibration. It shows that the least common multiple (LCM) harmonic of pole and slot of the acoustic noise and vibration are originated from axial UMF. It also shows experimentally that the axially balanced magnetic design can minimize the LCM harmonics in acoustic noise and vibration.",
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Sung, SJ, Jang, GH, Jang, JW & Song, JY 2012, Vibration and noise in a HDD spindle motor originated from the axial asymmetry of magnetic design. in 2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!., 6407358, 2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!, 2012 Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!, APMRC 2012, Singapore, Singapore, 12/10/31.

Vibration and noise in a HDD spindle motor originated from the axial asymmetry of magnetic design. / Sung, S. J.; Jang, G. H.; Jang, J. W.; Song, J. Y.

2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!. 2012. 6407358 (2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - This research investigates numerically and experimentally the characteristics of axial unbalanced magnetic force (UMF) due to axial asymmetry of magnetic design in the spindle motor of a hard disk drive, and its effect on the acoustic noise and vibration. It shows that the least common multiple (LCM) harmonic of pole and slot of the acoustic noise and vibration are originated from axial UMF. It also shows experimentally that the axially balanced magnetic design can minimize the LCM harmonics in acoustic noise and vibration.

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Sung SJ, Jang GH, Jang JW, Song JY. Vibration and noise in a HDD spindle motor originated from the axial asymmetry of magnetic design. In 2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!. 2012. 6407358. (2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!).