DocumentCode
1559726
Title
Improved proximate time-optimal sliding-mode control of hard disk drives
Author
Zhou, J. ; Zhou, R. ; Wang, Y. ; Guo, G.
Author_Institution
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Volume
148
Issue
6
fYear
2001
fDate
11/1/2001 12:00:00 AM
Firstpage
516
Lastpage
522
Abstract
An improved proximate time-optimal positioning control approach with discrete-time sliding-mode control theory for a hard disk drive servo is presented. A third order velocity reference profile is introduced to improve the second order ones in the conventional proximate time-optimal servomechanism. The proposed approach eliminates the mode-switching mechanism and dramatically reduces the seek time by 5-50%. Moreover, it is robust to unmodelled dynamics and parameter variations. Its effectiveness is verified in a simulation
Keywords
disc drives; discrete time systems; hard discs; position control; robust control; servomechanisms; time optimal control; variable structure systems; discrete-time sliding-mode control theory; hard disk drive servo; positioning control; proximate time-optimal sliding-mode control; seek time; third order velocity reference profile;
fLanguage
English
Journal_Title
Control Theory and Applications, IEE Proceedings -
Publisher
iet
ISSN
1350-2379
Type
jour
DOI
10.1049/ip-cta:20010694
Filename
980787
Link To Document