H∞ and Mixed H2/H∞ Control of Dual-Actuator Hard Disk Drive via LMIs

Author

Zadeh, Nasser Mohamad ; Amirifar, Ramin

Author_Institution

Electr. Eng. Dept., Tarbiat Modares Univ., Tehran

fYear

2008

fDate

21-24 Sept. 2008

Firstpage

61

Lastpage

65

Abstract

In this paper, H_infin and mixed H₂/H_infin controllers are designed for a hard disk drive (HDD) using linear matrix inequalities (LMIs). In the proposed algorithm, the problem of minimizing track misregistration (TMR) in the presence of unmodeled dynamics of voice-coil motor (VCM) is formulated as robust H_infin and mixed H₂/H_infin problems. Additional stack variables are introduced to characterize H₂ and H_infin performances. The simulation and comparison results demonstrate the significant performance improvement of TMR under unmodeled dynamics of VCM.

Keywords

H^infin control; disc drives; hard discs; linear matrix inequalities; H_infin control; LMI; dual-actuator hard disk drive; linear matrix inequalities; mixed H₂-H_infin control; stack variables; track misregistration; unmodeled dynamics; voice-coil motor; Actuators; Costs; Electric variables control; Hard disks; Hydrogen; Linear matrix inequalities; Magnetic heads; Noise measurement; Robust control; Servomechanisms; Linear matrix inequalities(LMIs); hard disk drive; robust control;

fLanguage

English

Publisher

ieee

Conference_Titel

Robotics, Automation and Mechatronics, 2008 IEEE Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-1675-2

Electronic_ISBN

978-1-4244-1676-9

Type

conf

DOI

10.1109/RAMECH.2008.4681396

Filename

4681396