DocumentCode :
891069
Title :
Adaptive resonant mode compensation for hard disk drives
Author :
Ohno, Keitaro ; Hara, Takeyori
Author_Institution :
Autonomous Syst. Lab., Fujitsu Labs. Ltd., Kawasaki, Japan
Volume :
53
Issue :
2
fYear :
2006
fDate :
4/1/2006 12:00:00 AM
Firstpage :
624
Lastpage :
630
Abstract :
This paper is concerned with a mechanical resonant mode compensation problem for hard disk drives. Conventional notch filters must have deep and wide enough frequency characteristics in order to accommodate all possible resonant mode characteristic perturbations, which result in deterioration in positioning accuracy and residual vibration after seeking. This paper proposes an easy-to-implement adaptive notch filter of which the center frequency follows the resonant frequency change. The basic idea of this adaptive filter is to balance two kinds of frequency weighted variances of the control input signal.
Keywords :
adaptive filters; hard discs; notch filters; position control; vibrations; adaptive notch filter; adaptive resonant mode compensation; control input signal; frequency characteristics; hard disk drive; head position control; residual vibration; resonant frequency; Adaptive filters; Control systems; Disk drives; Hard disks; Laboratories; Magnetic heads; Magnetic resonance; Resonant frequency; Testing; Vibrations; Adaptive filters; hard disks; notch filters; resonant modes;
fLanguage :
English
Journal_Title :
Industrial Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0278-0046
Type :
jour
DOI :
10.1109/TIE.2006.870660
Filename :
1614146
Link To Document :
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