Dual-stage actuator system for magnetic disk drives using a shear mode piezoelectric microactuator

Author

Koganezawa, S. ; Uematsu, Y. ; Yamada, T. ; Nakano, H. ; Inoue, J. ; Suzuki, T.

Author_Institution

File Memory Lab., Fujitsu Labs. Ltd., Atsugi, Japan

Volume

35

Issue

2

fYear

1999

fDate

3/1/1999 12:00:00 AM

Firstpage

988

Lastpage

992

Abstract

We developed a novel piezoelectric microactuator for dual-stage actuator systems in magnetic disk drives. This microactuator is based on the shear deformation of piezoelectric elements, and drives the head suspension assembly. The actuator is suitable for thin devices, and is easily manufactured because of its simple stack configuration. We installed the microactuator in a 2.5" prototype drive, and evaluated the servo system of the dual-stage actuator. This paper describes the structure of our piezoelectric actuator, its mechanical characteristics, and the evaluation of the dual-stage actuator servo system

Keywords

disc drives; hard discs; magnetic heads; microactuators; piezoelectric actuators; servomechanisms; 2.5 in; HDDs; dual-stage actuator system; head suspension assembly; magnetic disk drives; mechanical characteristics; microactuators; servo system; shear deformation; shear mode piezoelectric microactuator; stack configuration; Assembly; Bandwidth; Disk drives; Magnetic heads; Magnetic levitation; Microactuators; Piezoelectric actuators; Piezoelectric devices; Servomechanisms; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.753821

Filename

753821