Vibration Suppression PTC of Hard Disk Drives with Multirate Feedback Control

Author

Fukushima, Keisuke ; Fujimoto, Hiroshi

Author_Institution

Yokohama Nat. Univ., Yokohama

fYear

2007

fDate

9-13 July 2007

Firstpage

55

Lastpage

60

Abstract

In the head positioning systems of hard disk drives (HDDs), multirate control is very effective since the sampling frequency is restricted by the mechanism. In the short- span seeking-mode, the mechanical vibration is getting crucial obstruction to achieve high-speed data access. In this paper, a high-order vibration suppression perfect tracking control (PTC) method is proposed based on multirate feedforward control. Moreover, the robustness against variation of primary vibration frequency is improved by a multirate feedback controller.

Keywords

disc drives; feedback; feedforward; hard discs; position control; robust control; vibration control; hard disk drive; head positioning system; high-order vibration suppression; mechanical vibration; multirate feedback control; multirate feedforward control; perfect tracking control; robustness; sampling frequency; vibration frequency; Adaptive control; Control systems; Digital control; Feedback control; Frequency; Hard disks; Open loop systems; Robust control; Sampling methods; Vibration control;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2007. ACC '07

Conference_Location

New York, NY

ISSN

0743-1619

Print_ISBN

1-4244-0988-8

Electronic_ISBN

0743-1619

Type

conf

DOI

10.1109/ACC.2007.4282771

Filename

4282771