Title :
Effect of dual-stage actuator on positioning accuracy in 10 k rpm magnetic disk drives
Author :
Koganezawa, S. ; Hara, T. ; Uematsu, Y. ; Yamada, T.
Author_Institution :
File Memory Lab., Fujitsu Labs. Ltd., Atsugi, Japan
Abstract :
We have developed a piezoelectric micro-actuator for dual-stage actuator systems in magnetic disk drives. This microactuator, which drives the head suspension assembly, is based on the shear deformation of piezoelectric elements. We installed the microactuator in one of Fujitsu´s 3.5-inch commercial drives for evaluation of the servo system of dual-stage actuator. This paper describes the effect of the dual-stage servo system on positioning accuracy compared with the single actuator.
Keywords :
disc drives; microactuators; piezoelectric actuators; position control; servomechanisms; shear deformation; 3.5 inch; dual-stage actuator; head suspension assembly; magnetic disk drive; piezoelectric microactuator; positioning accuracy; servo system; shear deformation; Assembly; Disk drives; Frequency; Hard disks; Magnetic heads; Magnetic levitation; Microactuators; Piezoelectric actuators; Servomechanisms; Voltage;
Conference_Titel :
Asia-Pacific Magnetic Recording Conference, 2000. APMRC 2000
Conference_Location :
Tokyo, Japan
Print_ISBN :
0-7803-6254-3
DOI :
10.1109/APMRC.2000.898935
