DocumentCode
2336957
Title
Compensation for repeatable tracking errors in hard drives using discrete-time repetitive controllers
Author
Onuki, Yoshikazu ; Ishioka, Hideaki
Author_Institution
SHD Bus. Dev. Div., Sony Corp., Tokyo, Japan
fYear
2000
fDate
1-1 April 2000
Firstpage
490
Lastpage
495
Abstract
This paper presents the repeatable runout (RRO) compensation in disk file systems. We applied repetitive controllers for the tracking system. As experimental results, we obtained a high reduction ratio of 10/spl sim/45 dB for up to 10th harmonics of the RRO. Furthermore, by switching filter parameters between in the learning state and the steady state, we obtained fast learning of less than two disk rotations.
Keywords
compensation; disc drives; discrete time systems; errors; filtering theory; hard discs; periodic control; tracking; 10 to 45 dB; RRO compensation; compensation; discrete-time repetitive controllers; disk file systems; filter parameter switching; hard drives; reduction ratio; repeatable runout compensation; repeatable tracking errors;
fLanguage
English
Publisher
ieee
Conference_Titel
Advanced Motion Control, 2000. Proceedings. 6th International Workshop on
Conference_Location
Nagoya, Japan
Print_ISBN
0-7803-5976-3
Type
conf
DOI
10.1109/AMC.2000.862922
Filename
862922
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