Design of multi-stage composite nonlinear feedback control for hard disk drives

Author

Peng, Kemao ; Cheng, Guoyang ; Chen, M. ; Lee, Tong H.

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore

fYear

2002

fDate

2002

Firstpage

734

Lastpage

739

Abstract

The multistage composite nonlinear feedback (MCNF) control is proposed to improve effectiveness of the composite nonlinear feedback (CNF) control. The latter is developed for a class of linear systems with actuator saturation and consists of a linear and a nonlinear feedback part without any switching element. There is another nonlinear feedback part added in the MCNF control compared to the CNF control. The added nonlinear feedback will be effective after the original one has been set to be linear and a new CNF control will be constructed. Experimental results show that the MCNF control can produce better performances than the CNF control to design hard disk drive (HDD) servo systems.

Keywords

control system synthesis; disc drives; feedback; hard discs; large-scale systems; nonlinear control systems; CNF control; HDD servo systems; MCNF control; actuator saturation; hard disk drive servo systems; linear feedback; linear systems; multistage composite nonlinear feedback control design; nonlinear feedback; Bandwidth; Control systems; Feedback control; Hard disks; Hydraulic actuators; Linear feedback control systems; Linear systems; Nonlinear control systems; Servomechanisms; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Control, 2002. Proceedings of the 2002 IEEE International Symposium on

ISSN

2158-9860

Print_ISBN

0-7803-7620-X

Type

conf

DOI

10.1109/ISIC.2002.1157853

Filename

1157853