Multi-rate short track-seeking control of hard disk drives for computation saving

Author

Hirata, Mitsuo ; Tomizuka, Masayoshi

Author_Institution

Dept. of Electron. & Mech. Eng., Chiba Univ., Japan

Volume

4

fYear

2003

fDate

9-12 Dec. 2003

Firstpage

3420

Abstract

This paper proposes a design method for short track-seeking control based on one-degree-of-freedom (ODOF) control and initial value compensation (IVC). IVC utilizes non-zero initial values of the feedback controller to improve the step reference response of the ODOF tracking control system. This makes feedforward control unnecessary to shape the transient response of short track-seeking. As a result, the amount of computation during short track-seeking may be kept minimal. The proposed design method minimizes tracking errors in multi-rate control frame work for a step reference input taking into account the inter-sampling behavior. The effectiveness of the proposed method is shown by simulations.

Keywords

compensation; control system synthesis; disc drives; feedback; hard discs; initial value problems; position control; servomechanisms; step response; tracking; IVC; ODOF tracking control system; computation saving; control system synthesis; feedback controller; feedforward control; hard disk drives; initial value compensation; inter sampling behavior; multirate control frame work; multirate short track seeking control; nonzero initial values; one degree of freedom; simulations; step reference input; step reference response; tracking errors; transient response; Control systems; Design methodology; Frequency; Hard disks; Magnetic heads; Sampling methods; Servomechanisms; Shape control; Target tracking; Transient response;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 2003. Proceedings. 42nd IEEE Conference on

ISSN

0191-2216

Print_ISBN

0-7803-7924-1

Type

conf

DOI

10.1109/CDC.2003.1271673

Filename

1271673