Analysis of Structurally Transmitted Vibration of HDD in Notebook Computer

Author

Mou, J.Q. ; Fukun Lai ; See, I.B.L. ; Lin, W.Z.

Author_Institution

Data Storage Inst., A*STAR, Singapore, Singapore

Volume

49

Issue

6

fYear

2013

fDate

Jun-13

Firstpage

2818

Lastpage

2822

Abstract

Characteristics of structurally transmitted hard disk drive (HDD) vibrations induced by different built-in vibration sources, including speakers, fans and a CD/DVD drive in a notebook PC, are examined. It is found that at the high frequencies above 1000 Hz, the structurally transmitted HDD out-of-plane vibration is dominated by the vibrations induced by the speakers. The effects of the chassis design and HDD mounting on vibration transmission from speakers to HDD via chassis in the notebook PC are investigated. It is concluded that, in general, softer chassis and softer HDD mounting is helpful in suppressing the structurally transmitted vibrations of HDD at frequencies above 1000 Hz in a notebook PC. Furthermore, the HDD softer mounting modes should be kept away from the low order harmonics of the built-in fans and CD/DVD drive.

Keywords

disc drives; hard discs; notebook computers; vibrations; CD drive; DVD drive; HDD vibration; built in vibration sources; chassis design; fans; hard disk drive; notebook computer; speakers; structurally transmitted vibration; vibration transmission; Fan; hard disk drive (HDD); notebook PC; speaker; structurally transmitted vibration;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2260528

Filename

6522208