Robust time optimal controller design for hard disk drives

Author

Kim, Bong Keun ; Chung, Wan Kyun ; Lee, Ha Seong ; Choi, Hyun-Taek ; Suh, Hang, II ; Chan, Yong Hoon

Author_Institution

Robotics Lab., POSTECH, South Korea

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

3598

Lastpage

3600

Abstract

Robust time optimal control algorithm based on internal loop compensator is proposed. Internal loop compensator effectively isolates the hard disk system from the uncertain disturbances including modeling error, external disturbance, shock, and control torque saturation. We use the H∞ mixed sensitivity method for the optimization of internal loop compensator and proximate time optimal controller as a feedback controller to provide a time optimal property. The performance of the proposed controller is verified via simulation

Keywords

H^∞ control; compensation; disc drives; feedback; hard discs; robust control; time optimal control; torque control; H∞ mixed sensitivity method; control torque saturation; controller design; external disturbance; feedback controller; hard disk drives; internal loop compensator; modeling error; proximate time optimal controller; robust time optimal controller; shock; time optimal property; uncertain disturbances; Attenuation; Control systems; Hard disks; Noise measurement; Noise robustness; Optimal control; Optimization methods; Robust control; Target tracking; Transfer functions;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800602

Filename

800602