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

Volume

32

Issue

3

fYear

1996

fDate

5/1/1996 12:00:00 AM

Firstpage

1756

Lastpage

1761

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.492861

Filename

492861