Detail publikace

Modelling the focus error signal generation in a DVD player

HNILIČKA, B., BESANCON-VODA, A., SCHROEDER, H.

Originální název

Modelling the focus error signal generation in a DVD player

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

This paper presents a new method for modelling the focus error signal generation in a DVD player (so called the S-curve), using optical theory. The model is applied to an industrial system, developed in STMicroelectronics laboratories, and it can be useful firstly during the start-up procedure (when data layer is searched for) and secondly during normal playing mode, to tune the controller gain for the desired closed-loop bandwidth. An analytical and a numerical model, based on astigmatic method and on opto-geometrical analysis, are given and the influence of models parameters on the focus error signal is discussed. To estimate the unknown models parameters, a curve fitting method is applied, using measured data from the industrial system. The model quality is illustrated from a comparison with the real focus error signal, acquired during the start-up procedure (from open loop to closed loop). The results of this modelling are included in the DVD focus closed loop to design more sophisticated controllers for focus error minimization.

Klíčová slova v angličtině

Focus error signal

Autoři

HNILIČKA, B., BESANCON-VODA, A., SCHROEDER, H.

Rok RIV

2003

Vydáno

9. 7. 2003

Nakladatel

Ecole Centrale de Lille

Místo

Lille

ISBN

2-9512309-5-8

Kniha

IMACS Multiconference Computational Engineering in Systems Applications

Strany od

11

Strany do

18

Strany počet

8

BibTex

@inproceedings{BUT7916,
  author="Bohumil {Hnilička} and Alina {Besancon-Voda} and Heinz-Joerg {Schroeder}",
  title="Modelling the focus error signal generation in a DVD player",
  booktitle="IMACS Multiconference Computational Engineering in Systems Applications",
  year="2003",
  pages="8",
  publisher="Ecole Centrale de Lille",
  address="Lille",
  isbn="2-9512309-5-8"
}