NDLI: Adaptive disturbance rejection in the presence of uncertain resonance mode in hard disk drives

Content Provider	IEEE Xplore Digital Library
Author	Fan Hong Chunling Du Keng Peng Tee Ge, S.S.
Copyright Year	2009
Description	Author affiliation: Data Storage Institute, Agency for Science, Technology and Research (ASTAR), DSI Building, 5 Engineering Drive 1, Singapore 117608 (Fan Hong; Chunling Du) \|\| Infocomm Research, ASTAR, Singapore 138632 (Keng Peng Tee) \|\| Dept. of Electrical & Computer Engineering, National University of Singapore, Singapore 117605 (Ge, S.S.)
Abstract	An adaptive on-line scheme is designed to identify the uncertain and time-varying resonance modes in hard disk drive servo systems. Based on the identified results, the uncertain resonance mode is extracted and a peak filter is designed accordingly to provide stronger capability of disturbance suppression. The scheme does not require any extra excitation signal nor additional signal processing for the parameter identification. Compared to conventional method, the rates of learning and error convergence are greatly increased. The scheme can provide good stability margin at high frequency subject to the variation of the resonance frequency and the peak gain. Simulation results show the validity and effectiveness of the proposed scheme.
Starting Page	3244
Ending Page	3249
File Size	970074
Page Count	6
File Format	PDF
ISBN	9781424445233
ISSN	07431619
DOI	10.1109/ACC.2009.5159870
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Resonance Hard disks Signal processing Time varying systems Servomechanisms Filters Parameter estimation Convergence Stability Frequency hard disk drive Disturbance rejection adaptive control peak filter
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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