Low voltage driven piggy-back actuator of hard disk drives

Author

Naniwa, I. ; Nakamura, S. ; Saegusa, S. ; Sato, K.

Author_Institution

Mech. Eng. Res. Lab., Hitachi Ltd., Tsuchiura, Japan

fYear

1999

fDate

21-21 Jan. 1999

Firstpage

49

Lastpage

52

Abstract

Fine positioning by a piggy-back actuator is essential in order to increase the recording density of hard disk drives (HDDs). We therefore developed a piggy-back actuator that generates a 1.4-/spl mu/m displacement at 5 V. This displacement is twice as large as that of the usual piggy-back actuators. This actuator satisfies all requirements for HDDs including track density of 30 kilotracks per inch. It will help us attain low power consumption and high performance HDDs.

Keywords

disc drives; frequency response; hard discs; microactuators; micropositioning; piezoelectric actuators; servomechanisms; 5 EV; I-shaped actuator; LV driven piggy-back actuator; design aspects; displacement generation; fine actuator; fine positioning; frequency response; hard disk drives; head suspension; high performance HDD; low power consumption; microactuator; push-pull piezoelectric actuator; self-latch property; servo system; track density; Actuators; Bandwidth; Energy consumption; Hard disks; Laboratories; Low voltage; Magnetic heads; Servomechanisms; Suspensions; Target tracking;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro Electro Mechanical Systems, 1999. MEMS '99. Twelfth IEEE International Conference on

Conference_Location

Orlando, FL, USA

ISSN

1084-6999

Print_ISBN

0-7803-5194-0

Type

conf

DOI

10.1109/MEMSYS.1999.746750

Filename

746750