NDLI: Real time method to measure head disk spacing variation under vibration conditions

Content Provider	IEEE Xplore Digital Library
Author	Amei Li Xinqun Liu Clegg, W. Jenkins, D. Donnelly, T.
Copyright Year	2001
Description	Author affiliation: Centre for Res. in Inf. Storage Technol., Plymouth Univ., UK (Amei Li)
Abstract	Three readback signal detection methods are presented for real-time head disk spacing variation measurement under vibration conditions. The proposed PW/sub 50/ parameter estimation method is not restricted by the isolated readback pulse signal requirement, thus can be used for spacing variation measurement in normally operated hard disk drives, especially for low frequency variations. Amplitude detection and thermal signal detection methods, on the other side, are more effective for high frequency spacing variation measurement. Theoretical analysis and experimental results are given to illustrate the effectiveness of the methods.
Sponsorship	IEEE Instrum. & Meas. Soc.
Starting Page	945
Ending Page	949
File Size	374285
Page Count	5
File Format	PDF
ISBN	0780366468
ISSN	10915281
DOI	10.1109/IMTC.2001.928218
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-05-21
Publisher Place	Hungary
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vibration measurement Magnetic heads Hard disks Magnetic recording Magnetic separation Signal detection Parameter estimation Pulse measurements Frequency measurement Disk recording
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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