On improving head-disk interface in hard disk drives using active control

Author

Swei, Shan-Min ; Gao, Peng

Author_Institution

Sch. of Mech. & Production Eng., Nanyang Technol. Univ., Singapore

Volume

4

fYear

2000

fDate

2000

Firstpage

3106

Abstract

How to improve head disk interface (HDI) characteristics in the mechanical design of hard disk drives (HDDs) has become increasingly important due to ever-growing demand for storage density and access speed. In the paper, an active actuation and control of the suspension structure in HDDs utilizing piezo-films is investigated. Its applications in reducing head-disk friction/wear and suppressing induced vibrations are studied. An analytical model for a cantilever beam like structure with the bonded piezo-films is presented. A direct output feedback control is proposed and its effectiveness in suppressing induced vibrations is demonstrated both theoretically and experimentally

Keywords

disc drives; feedback; hard discs; piezoelectric materials; vibration control; active actuation; active control; cantilever beam like structure; direct output feedback control; hard disk drives; head-disk interface; induced vibrations suppression; mechanical design; piezo-films; Analytical models; Bonding; Hard disks; Output feedback; Piezoelectric materials; Production engineering; Stability; Structural beams; Target tracking; Vibration control;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 2000. Proceedings of the 39th IEEE Conference on

Conference_Location

Sydney, NSW

ISSN

0191-2216

Print_ISBN

0-7803-6638-7

Type

conf

DOI

10.1109/CDC.2000.912173

Filename

912173