DocumentCode
1214622
Title
Minimizing power dissipation in a disk file actuator
Author
Cooper, Evert S.
Author_Institution
IBM Corp., San Jose, CA, USA
Volume
24
Issue
3
fYear
1988
fDate
5/1/1988 12:00:00 AM
Firstpage
2081
Lastpage
2091
Abstract
The ability to improve a disk file´s access-time performance is severely limited by an inverse fourth-power increase in actuator-power dissipation. Two areas are germane to the actuator-power problem: the design of the actuator coil and the design of the control trajectory. Design considerations for optimal solutions in both of these areas are presented. Utilization of power-optimal control in concert with a power-optimized actuator makes possible a head/disk assembly with improved seek-time performance.
Keywords
electric actuators; magnetic disc storage; magnetic heads; minimisation; optimal control; power control; access-time performance; actuator coil; control trajectory; disk file actuator; head/disk assembly; minimisation; optimal solutions; power dissipation; power-optimal control; power-optimized actuator; seek-time performance; Coils; Computer crashes; Hydraulic actuators; Optimal control; Pneumatic actuators; Power dissipation; Servomechanisms; Temperature; Thermal degradation; Velocity control;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.3404
Filename
3404
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