Title :
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
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;
Conference_Titel :
Micro Electro Mechanical Systems, 1999. MEMS '99. Twelfth IEEE International Conference on
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-5194-0
DOI :
10.1109/MEMSYS.1999.746750
