NDLI: Sensitivity loop shaping for disturbance rejection in hard disk drives

Content Provider	IEEE Xplore Digital Library
Author	Jinchuan Zheng Minyue Fu Chunling Du Youyi Wang Lihua Xie
Copyright Year	2009
Description	Author affiliation: School of Electrical Engineering and Computer Science, The University of Newcastle, Callaghan, NSW 2308, Australia (Jinchuan Zheng; Minyue Fu) \|\| Agency for Science, Technology and Research (A¿STAR) Data Storage Institute (DSI), Singapore 117608 (Chunling Du) \|\| School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798 (Youyi Wang; Lihua Xie)
Abstract	This paper investigates a factorization approach to sensitivity loop shaping for disturbance rejection in hard disk drives (HDDs). The advantage of the factorization approach is that the system sensitivity function can be expressed explicitly in terms of a unique design parameter. This greatly simplifies the control design process to make the system sensitivity function match a chosen target sensitivity function with guaranteed stability. By decomposing the stabilizing controller structure, we further present how to select the design parameter (also regarded as disturbance filter) to suppress the dominant disturbances at some specific frequencies. Simulation analysis and experimental results demonstrate that the proposed method can remarkably suppress the disturbances around the servo bandwidth and thus offers an improved tracking accuracy.
Starting Page	591
Ending Page	596
File Size	258284
Page Count	6
File Format	PDF
ISBN	9781424447060
DOI	10.1109/ICCA.2009.5410584
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-12-09
Publisher Place	New Zealand
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hard disks Frequency Servomechanisms Adaptive filters Filtering theory Bandwidth Rail to rail outputs Narrowband Resonance Control systems
Content Type	Text
Resource Type	Article

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