DocumentCode
2249839
Title
HDD servo loop gain calibration based on MRA method
Author
Fu-Cai Wang ; Jia, Q.-W. ; Song-Qin Gong
Author_Institution
Dept. of Phys., Yantai Normal Univ.
fYear
2004
fDate
16-19 Aug. 2004
Firstpage
107
Lastpage
108
Abstract
An automatic gain calibration method based on model reference adaptation for HDD servo is presented. Variations in VCM gain may cause variations in servo control stability margins and thus need to be compensated. The traditional model reference adaptive method is modified in this paper to generate the compensation gain adaptively. Experimental results show that after the compensation, the DC gain of the open-loop responses can be maintained nearly constant despite the variations in head position and operating temperature
Keywords
calibration; disc drives; hard discs; magnetic heads; model reference adaptive control systems; servomechanisms; DC gain; HDD servo loop gain calibration; automatic gain calibration method; head position; model reference adaptation; open-loop responses; operating temperature; servo control stability; voice coil motor gain; Adaptive control; Calibration; Frequency; Magnetic heads; Programmable control; Resonance; Servomechanisms; Servosystems; Stability; Temperature;
fLanguage
English
Publisher
ieee
Conference_Titel
Asia-Pacific Magnetic Recording Conference, 2004. APMRC 2004
Conference_Location
Seoul
Print_ISBN
0-7803-8717-1
Type
conf
DOI
10.1109/APMRC.2004.1521974
Filename
1521974
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