Title :
A high-performance and low-profile moving-magnet actuator for disk drives
Author :
Yamada, T. ; Koganezawa, S. ; Aruga, K. ; Mizoshita, Y.
Author_Institution :
File Memory Lab., Fujitsu Ltd., Atsugi, Japan
fDate :
11/1/1994 12:00:00 AM
Abstract :
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
Keywords :
actuators; coils; electric actuators; magnetic circuits; magnetic disc storage; EM actuators; coils; design flexibility; inductance; low-profile moving-magnet actuator; magnetic bias force; magnetic circuit construction; magnetic disk drives; power consumption; rotary actuator; yokes; Actuators; Coils; Disk drives; Energy consumption; Laboratories; Magnetic circuits; Magnetic flux; Saturation magnetization; Torque; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
