Dynamic analysis of magnetic disk drive actuators according to temperature variation

The initial internal temperature of a hard disk drive (HDD) differs depending on the operating environment, and the diverse heat sources from the surrounding environment raise the internal temperature of the HDD after operation starts. Such temperature change ranges from 0°C to 60°C in usual operati...

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Bibliographic Details
Published in:	2016 Asia-Pacific Magnetic Recording Conference Digest (APMRC) pp. 1 - 2
Main Authors:	Young-Jin Kim, Dongho Oh, Chulsoon Kim, Ki-Tak Jung
Format:	Conference Proceeding
Language:	English
Published:	IEEE 01-07-2016
Subjects:	Actuator Actuators Ball Bearing Frequency measurement Hard Disk Drive Magnetic recording Temperature Temperature dependence Temperature measurement Vibrations
Online Access:	Get full text
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Summary:	The initial internal temperature of a hard disk drive (HDD) differs depending on the operating environment, and the diverse heat sources from the surrounding environment raise the internal temperature of the HDD after operation starts. Such temperature change ranges from 0°C to 60°C in usual operating environment. This affects the characteristics of a pivot bearing that supports a HDD actuator. This research predicts how the characteristics of bearings change in relation to temperature and how the dynamic characteristics of actuators change according to the change of bearing characteristics. These changes are also verified through experiments.
DOI:	10.1109/APMRC.2016.7524263