In Situ Spacing Fluctuation Monitoring of Hard Disk Drive with Thermal Asperity Sensors

Da Peng Zhao; Xiong Fei Wei; Bin Liu; Yu Wang; Sheng Xiang Chen; Lin Hua Lan

doi:10.4028/www.scientific.net/AMM.284-287.790

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 284-287In Situ Spacing Fluctuation Monitoring of Hard...

In Situ Spacing Fluctuation Monitoring of Hard Disk Drive with Thermal Asperity Sensors

Abstract:

This paper presents an investigation of spacing fluctuation characterization (SFC) of Hard Disk Drive (HDD) using thermal asperity (TA) sensor. Firstly, the spacing fluctuation monitored by TA sensor is correlated with that monitored by a Laser Doppler Vibrometer (LDV). Secondly, a series of experiments are conducted to study the factors affecting the spacing fluctuation, including disk distortion, head crown sensitivity, ZH sensitivity. Good disk assembly and small crown sensitivity and ZH sensitivity will be helpful to reduce spacing fluctuation.

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Periodical:

Applied Mechanics and Materials (Volumes 284-287)

Pages:

790-794

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.284-287.790

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Online since:

January 2013

Authors:

Da Peng Zhao, Xiong Fei Wei, Bin Liu, Yu Wang, Sheng Xiang Chen, Lin Hua Lan

Keywords:

Head Disk Interface, Laser Doppler Vibrometer, Spacing Fluctuation Characterization, Thermal Asperity Sensor

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