DocumentCode
1467707
Title
Effect of dual-stage actuator on positioning accuracy in 10 k rpm magnetic disk drives
Author
Koganezawa, Shinji ; Hara, T. ; Uematsu, Y. ; Yamada, T.
Author_Institution
Dept. of Mechatronics Dev., Fujitsu Labs. Ltd., Kawasaki, Japan
Volume
37
Issue
2
fYear
2001
fDate
3/1/2001 12:00:00 AM
Firstpage
955
Lastpage
958
Abstract
We have developed a piezoelectric microactuator for dual-stage actuator systems in magnetic disk drives. We installed the microactuator in one of Fujitsu´s 3.5-inch commercial drives for evaluation of the servo system of dual-stage actuator. The dual-stage actuator system achieved the nonrepeatable position error (NRPE) 3σ values of 0.036 μm. The dual-stage servo system reduced the NRPE by 35% compared with the conventional single actuator system even in HDD´s which has a high rotational speed of 10,000 rpm
Keywords
disc drives; microactuators; piezoelectric actuators; servomechanisms; 3.5 in; 62 mg; 9 kHz; Fujitsu commercial drives; MEMS; dual-stage actuator; magnetic disk drives; nonrepeatable position error reduction; piezoelectric microactuator; positioning accuracy; servo system; shear deformation; Assembly; Bandwidth; Disk drives; Hard disks; Magnetic heads; Magnetic levitation; Microactuators; Piezoelectric actuators; Resonance; Servomechanisms;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.917649
Filename
917649
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