Title :
High-speed orthogonal power effect actuator for recording at over 10000 TPI
Author :
Aruga, Keiji ; Kuroba, Yasumasa ; Koganezawa, Shinji ; Yamada, Tomoyoshi ; Nagasawa, Yoshiaki ; Komura, Yukihiro
Author_Institution :
Fujitsu Labs. Ltd., Kawasaki, Japan
fDate :
5/1/1996 12:00:00 AM
Abstract :
A new type of rotary actuator for HDDs is presented. To suppress the resonance gain in the quasi-rigid body mode caused by the stiffness of support bearings, we propose orthogonal driving. The designed actuator for a 3.5-inch drive shows a quasi-rigid body mode gain of less than 5 dB, and a fundamental resonance frequency of approximately 10 kHz. The results agree with those from finite element analysis
Keywords :
actuators; finite element analysis; frequency response; hard discs; magnetic recording; servomechanisms; transfer functions; 10 kHz; 3.5 inch; finite element analysis; fundamental resonance frequency; hard disk drives; high-speed orthogonal power effect actuator; magnetoresistive heads; open loop transfer function; orthogonal driving; quasi-rigid body mode; resonance gain; rotary actuator; servo characteristics; support bearings stiffness; Coils; Damping; Elasticity; Frequency; Magnetic heads; Microactuators; Pneumatic actuators; Resonance; Servomechanisms; Vibrations;
Journal_Title :
Magnetics, IEEE Transactions on
