DocumentCode
393410
Title
Simultaneous detection method of position and velocity for hard-disk drive servo system
Author
Sato, Kiminori
Author_Institution
Fuji Electr. Corporate Res. & Dev. Ltd., Nagano, Japan
Volume
1
fYear
2002
fDate
5-7 Aug. 2002
Firstpage
69
Abstract
We propose a method for simultaneously detecting the position and velocity of a magnetic head relative to the target track in a hard-disk drive (HDD) by using a new servo pattern. The position is derived from the phase shift of the burst signal from the pattern, and the velocity is derived from the frequency shift thereof. By applying this method. the sampling rate of the servo system can be reduced to less than 1/2.
Keywords
disc drives; hard discs; position measurement; velocity measurement; HDD; burst signal phase shift; hard-disk drive servo system; magnetic head; position detection; servo system sampling rate; target track; velocity detection; Circuit stability; Control systems; Damping; Feedback; Frequency; Hard disks; Magnetic heads; Servomechanisms; Servomotors; Target tracking;
fLanguage
English
Publisher
ieee
Conference_Titel
SICE 2002. Proceedings of the 41st SICE Annual Conference
Print_ISBN
0-7803-7631-5
Type
conf
DOI
10.1109/SICE.2002.1195184
Filename
1195184
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