Title :
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
fDate :
3/1/1999 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
