Adaptive accelerometer feedforward servo for disk drives

Author

Pannu, Satinderpall ; Horowitz, Roberto

Author_Institution

Dept. of Mech. Eng., California Univ., Berkeley, CA, USA

Volume

5

fYear

1997

fDate

10-12 Dec 1997

Firstpage

4216

Abstract

Discusses the design and experimental verification of a direct adaptive control scheme to attenuate the effect of external disturbances on disk drives. The adaptive controller acts as an add-on compensator to the existing fixed compensator. An accelerometer which is mounted on the base casting of the disk drive generates the input signal for the controller The control objective is to minimize the variance of the position error signal in the presence of external random vibrations. Experimental results show that reduction of 92% in the variance of the position error signal can be obtained

Keywords

accelerometers; adaptive control; discrete time systems; feedforward; magnetic disc storage; position control; servomechanisms; stochastic systems; transfer functions; adaptive accelerometer feedforward servo; add-on compensator; disk drives; external disturbances; fixed compensator; position error signal variance; Accelerometers; Adaptive control; Application software; Disk drives; Electric shock; Error correction; Programmable control; Servomechanisms; Signal generators; Vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 1997., Proceedings of the 36th IEEE Conference on

Conference_Location

San Diego, CA

ISSN

0191-2216

Print_ISBN

0-7803-4187-2

Type

conf

DOI

10.1109/CDC.1997.649495

Filename

649495