Two degree-of-freedom dual-stage actuator controller design for hard disk drives

Author

Chung, Chung Choo ; Seo, Chin Won ; Lee, Seung-Hi

Author_Institution

Dept. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

2255

Lastpage

2257

Abstract

This paper presents a new controller design method for dual-stage actuators. The controller consists of two stabilizing controllers for VCM and MEMS actuators and two main controllers (slave and master). The slave and master controllers are used to shape the sensitivity of the closed loop system at low and high frequency, respectively. With the proposed method satisfactory sensitivity and complementary sensitivity are achieved

Keywords

MIMO systems; closed loop systems; control system synthesis; disc drives; frequency response; hard discs; microactuators; sensitivity analysis; servomechanisms; 2-DOF dual-stage actuator; MEMS actuators; MIMO system; VCM actuators; closed loop system; controller design method; frequency response; hard disk drives; high frequency; low frequency; master controller; second order system; sensitivity shaping; servomechanism; slave controller; stabilizing controllers; Actuators; Closed loop systems; Control systems; Design methodology; Error correction; Frequency; Hard disks; Master-slave; Microactuators; Micromechanical devices;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908384

Filename

908384