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Global variables in colored Petri nets

Globalieji spalvotųjų Petri tinklų kintamieji
Authors: Bartkevičius, S.; Kragnys, R.; Šarkauskas, K.; Kauno technologijos universitetas;

Global variables in colored Petri nets

Abstract

Simulating the complex control systems and desiring the results of simulation to maximally draw nearer the real processes, it will be already not enough of those possibilities, which are provided by colored Petri nets. There exist such control systems, for which it is not possible to create adequate model or the model complexity grows to such extent at which it loses its functionality. For the solution of such problems it is proposed to use global variables in the colored Petri nets. Global variables create the possibility to simulate the programs of control, when control system is built using a mechanism of interruptions. The use of global variables breaks the rigidly specific graphic structure of the colored Petri nets, since the concealed connections appear, so that for their use rigid rules are determined. Usage of global variables enables to make models with dynamic control of delays and fast service of interruptions, without damaging causal connections and parallelism of processes in a control system.

Modeliuojant valdymo sistemas ir norint modeliavimo procesą kuo labiau priartinti prie realiai vykstančių procesų, nebeužtenka tų galimybių, kurias užtikrina spalvotieji Petri tinklai. Yra tokių valdymo sistemų, kurių nebegalima aprašyti tomis priemonėmis, kurias leidžia spalvoti Petri tinklai, arba modeliai tampa tokie sudėtingi, kad realizuoti jie praranda funkcionalumą. Šioms problemoms spręsti siūloma spalvotuosiuose Petri tinkluose naudoti globaliuosius kintamuosius. Globalieji kintamieji leidžia modeliuoti ir valdymo programas, kai aptarnaujant remiamasi kompiuterių pertraukčių mechanizmu. Globaliųjų kintamųjų naudojimas griauna aiškiai determinuotą grafinę spalvotųjų Petri tinklų struktūrą, atsiranda paslėptų ryšių, todėl yra nustatytos aiškios jų naudojimo taisyklės. Naudojant globaliuosius kintamuosius gali būti organizuotas modelio elementų vėlinimo valdymas nepažeidžiant priežastingumo ryšių ir sistemos funkcionavimo algoritmo.

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Lithuania
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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