Title :
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
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;
Conference_Titel :
Control Applications, 2002. Proceedings of the 2002 International Conference on
Print_ISBN :
0-7803-7386-3
DOI :
10.1109/CCA.2002.1038674
