Deterministic method for obtaining nominal and uncertainty models of CD drives

Author

Vidal, E. ; Stoustrup, J. ; Andersen, P. ; Pedersen, T.S. ; Mikkelsen, H.F.

Author_Institution

Dept. of Control Eng., Aalborg Univ., Denmark

Volume

2

fYear

2002

fDate

2002

Firstpage

637

Abstract

In this paper a deterministic method for obtaining the nominal and uncertainty models of the focus loop in a CD-player is presented based on parameter identification and measurements in the focus loop of 12 actual CD drives that differ by having worst-case behaviors with respect to various properties. The method provides a systematic way to derive a nominal average model as well as a structured multiplicative input uncertainty model, and it is demonstrated how to apply μ-theory to design a controller based on the models obtained that meets certain robust performance criteria.

Keywords

Bode diagrams; audio discs; disc drives; feedback; identification; optical disc storage; robust control; uncertainty handling; CD-player; deterministic method; feedback control; focus loop; nominal models; parameter identification; robust performance criteria; uncertainty models; worst-case behaviors; Control engineering; Laser feedback; Laser theory; Optical control; Parameter estimation; Robust control; Robustness; Structural discs; Transfer functions; Uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications, 2002. Proceedings of the 2002 International Conference on

Print_ISBN

0-7803-7386-3

Type

conf

DOI

10.1109/CCA.2002.1038674

Filename

1038674