NDLI: Transient signal measurement and analysis of in-situ flying height test during track seeking process

Content Provider	IEEE Xplore Digital Library
Author	Lei Wan Bo Liu Zhimin Yuan
Copyright Year	2002
Description	Author affiliation: Data Storage Inst., Singapore, Singapore (Lei Wan; Bo Liu; Zhimin Yuan)
Abstract	In view of the fact that the head-disk clearance approaches several nanometers for the next generation magnetic recording system, head-disk contacts, especially during the seeking processes, could happen and these contacts may deteriorate the overall performance. A hardware setup using triple harmonic method for flying height measurement during track seeking as well as track following processes is described. Tradeoff is made between less ISI distortion and higher selectivity of the harmonic selection channel. The linear equalizer based on the minimum mean square error criterion (MMSE) has been developed to remove the ISI distortions. The least mean square (LMS) algorithm is used to calculate the tap weight coefficients. The results show that 1 nm accuracy for FH measurement during track seeking process can be achieved.
Sponsorship	IEEE Singapopre Sect. IEEE Magnetics Soc. ASME
File Size	148816
File Format	PDF
ISBN	0780375092
DOI	10.1109/APMRC.2002.1037712
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-08-27
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transient analysis Signal processing Signal analysis Testing Distortion measurement Intersymbol interference Magnetic analysis Magnetic recording Hardware Harmonic distortion
Content Type	Text
Resource Type	Article

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