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A high-performance and low-profile moving-magnet actuator for disk drives

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4 Author(s)
Yamada, T. ; File Memory Lab., Fujitsu Ltd., Atsugi, Japan ; Koganezawa, S. ; Aruga, K. ; Mizoshita, Y.

We have developed a high-performance moving-magnet rotary actuator for very low-profile magnetic disk drives. A small moving magnet and efficient low-profile magnetic circuit construction give high acceleration and reduce power consumption to 50% that of moving coil actuators. The arrangement of the coils and yokes increases the design flexibility. The actuator does, however, suffer from a magnetic bias force and large inductance

Published in:

Magnetics, IEEE Transactions on  (Volume:30 ,  Issue: 6 )

Date of Publication:

Nov 1994

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