DocumentCode
3093993
Title
A Linear Time-Varying Control Scheme and Its Application to a Hard Disk Drive Servo System
Author
Thum, Chin Kwan ; Chunling Du ; Chen, Ben M. ; Eng Hong Ong ; Kim Piew Tan
Author_Institution
Nat. Univ. of Singapore, Singapore
fYear
2007
fDate
5-8 Nov. 2007
Firstpage
892
Lastpage
897
Abstract
A novel linear time-varying (LTV) control scheme is developed to perform short/mid-span seeking and track- following. This new scheme uses the concept behind the conventional composite nonlinear feedback (CNF) scheme to exhibit fast and smooth seeking. Having two nonlinear time components that are independent of seek length to adjust the feedback gain, the proposed scheme displays a notably better performance robustness against variations in seek length during short/mid-span seeking as well as 25.3% more head positioning accuracy during track-following over the conventional CNF control.
Keywords
feedback; nonlinear control systems; servomechanisms; composite nonlinear feedback; hard disk drive servo system; linear time-varying; linear time-varying control; Control systems; Displays; Feedback; Hard disks; Nonlinear control systems; Optimal control; Performance gain; Robust control; Servomechanisms; Time varying systems;
fLanguage
English
Publisher
ieee
Conference_Titel
Industrial Electronics Society, 2007. IECON 2007. 33rd Annual Conference of the IEEE
Conference_Location
Taipei
ISSN
1553-572X
Print_ISBN
1-4244-0783-4
Type
conf
DOI
10.1109/IECON.2007.4459915
Filename
4459915
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