Robust H2 Synthesis for Dual-stage Multi-sensing Track-following Servo Systems in HDDs

Author

Nagamune, Ryozo ; Huang, Xinghui ; Horowitz, Roberto

Author_Institution

Dept. of Mech. Eng., California Univ., Berkeley, CA

fYear

2006

fDate

14-16 June 2006

Firstpage

1284

Lastpage

1289

Abstract

This paper presents a robust H₂ synthesis technique for designing a track-following servo system for a hard disk drive (HDD) product line. The goal is to design a single robust controller that minimizes the worst case H₂ performance of an entire disk drive product line, assuming that dynamic variations in the product line (i.e. variations from one unit to another) are accurately characterized by affine variations in several of the actuator´s model parameters, such as variations in the resonance frequency or damping ratio of a resonance mode. The advantages and disadvantages of the proposed method are discussed and an illustrative realistic example is presented

Keywords

H^infin control; control system synthesis; disc drives; hard discs; robust control; servomechanisms; dual-stage multi-sensing track-following servo systems; hard disk drives; robust H₂ synthesis; Control system synthesis; Damping; Disk drives; Hard disks; Hydrogen; Resonance; Resonant frequency; Robust control; Robustness; Servomechanisms;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2006

Conference_Location

Minneapolis, MN

Print_ISBN

1-4244-0209-3

Electronic_ISBN

1-4244-0210-7

Type

conf

DOI

10.1109/ACC.2006.1656394

Filename

1656394