Track-following controller design of MEMS based dual-stage servos in magnetic hard disk drives

Author

Li, Yunfeng ; Horowitz, Roberto

Author_Institution

Comput. Mech. Lab., California Univ., Berkeley, CA, USA

Volume

1

fYear

2000

fDate

2000

Firstpage

953

Abstract

A decoupled controller architecture and discrete time pole placement design methodology is proposed for dual-stage servo controller design of magnetic hard disk drives. The methodology was applied to the controller design of a dual-stage servo with a MEMS microactuator (MA) which rotates the slider relative to the gimbal. MIMO and SIMO controllers were designed for cases when the microactuator´s relative position error signal is respectively available and not available to the control system. The effects of MA resonance variations on the stability and performance of the controller were analyzed for both cases

Keywords

MIMO systems; control system synthesis; disc drives; discrete time systems; electrostatic actuators; hard discs; pole assignment; position control; servomechanisms; MEMS based dual-stage servos; MIMO controllers; SIMO controllers; decoupled controller architecture; discrete time pole placement; magnetic hard disk drives; relative position error signal; track-following controller; Control systems; Design methodology; Error correction; Hard disks; MIMO; Microactuators; Micromechanical devices; Servomechanisms; Signal design; State feedback;

fLanguage

English

Publisher

ieee

Conference_Titel

Robotics and Automation, 2000. Proceedings. ICRA '00. IEEE International Conference on

Conference_Location

San Francisco, CA

ISSN

1050-4729

Print_ISBN

0-7803-5886-4

Type

conf

DOI

10.1109/ROBOT.2000.844171

Filename

844171