Modelling the focus error signal generation in a DVD player

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Modelling the focus error signal generation in a DVD player

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

Modelling the focus error signal generation in a DVD player

Popis výsledku anglicky

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

Druh

D - Stať ve sborníku

CEP obor

BC - Teorie a systémy řízení

OECD FORD obor

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Projekt

<a href="/cs/project/GA102%2F01%2F1485" target="_blank" >GA102/01/1485: Prostředí pro vývoj, modelování a aplikaci heterogenních systémů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

IMACS Multiconference Computational Engineering in Systems Applications

ISBN

2-9512309-5-8

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

11-18

Název nakladatele

Ecole Centrale de Lille

Místo vydání

Lille

Místo konání akce

Lille

Datum konání akce

9. 7. 2003

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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