An advanced sector servo using a learning, estimating and over-sampling method for a 3.5" 28 Mbyte FDD

Author

Matsukawa, S. ; Yoshiura, Takahito ; Wakabayashi, N. ; Tanimura, T.

Author_Institution

Matsushita Electr. Ind. Co. Ltd., Osaka, Japan

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

4484

Lastpage

4489

Abstract

The authors developed an advanced sector servo which was used in a 28-Mbyte flexible magnetic disk drive (FDD). This sector servo uses a learning method which estimates a continuous track position error between servo sectors based on the information from an external position encoder and an over-sampling method which samples position error at a higher sampling rate. As a result, the authors achieved fine-trackability and high vibration-resistance performance without an increase in the number of servo sectors. The head positioning control system using these methods and the control performances are described

Keywords

floppy discs; learning systems; position control; servomechanisms; 28 Mbyte; 3.5 in; advanced sector servo; continuous track position error; external position encoder; fine-trackability; flexible magnetic disk drive; head positioning control system; learning method; over-sampling method; vibration-resistance performance; Cities and towns; Communication industry; Control systems; Laboratories; Learning systems; Magnetic heads; Magnetic separation; Sampling methods; Servomechanisms; Vibrations;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278668

Filename

278668