Modelling the focus error signal generation in a DVD player
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F03%3APU37437" target="_blank" >RIV/00216305:26220/03:PU37437 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Modelling the focus error signal generation in a DVD player
Original language description
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 onopto-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 sophis
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
BC - Theory and management systems
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA102%2F01%2F1485" target="_blank" >GA102/01/1485: Enviroment for development, modelling and application of heterogenous systems</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
IMACS Multiconference Computational Engineering in Systems Applications
ISBN
2-9512309-5-8
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
11-18
Publisher name
Ecole Centrale de Lille
Place of publication
Lille
Event location
Lille
Event date
Jul 9, 2003
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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