Head-disk spacing variation suppression via active flying height control

Author

Liu, Xinqun ; Li, Amei ; Clegg, Warwick ; Jenkins, David F L ; Davey, Paul

Author_Institution

Centre for Res. in Inf. Storage Technol., Univ. of Plymouth, UK

Volume

51

Issue

5

fYear

2002

fDate

10/1/2002 12:00:00 AM

Firstpage

897

Lastpage

901

Abstract

A novel active flying height control method is proposed for the suppression of head-disk spacing variation in hard disk drives under shock or vibration conditions. The thermal signal detection method is used for real-time derivation of the spacing variation signal for feedback control. Design details of the servo control system are given. Simulation results are provided to demonstrate the effectiveness of the method.

Keywords

control system analysis; disc drives; feedback; hard discs; magnetic heads; servomechanisms; shock control; signal detection; vibration control; HDD; active flying height control methods; feedback control; hard disk drives; head-disk spacing variation suppression; servo control systems; shock conditions; spacing variation signal real-time derivation; thermal signal detection methods; vibration conditions; Disk recording; Electric shock; Feedback control; Hard disks; Helium; Magnetic heads; Magnetic recording; Servosystems; Signal detection; Vibration control;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2002.807790

Filename

1174013