alexa Modelling and Control of KRC Systems Using TPN and TA
ISSN ONLINE(2278-8875) PRINT (2320-3765)

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering
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Research Article

Modelling and Control of KRC Systems Using TPN and TA

H. Allaa1, H. Awad2, A. Anwar1, E. El-Hajri3
  1. Laboratoire d’Automatique de Grenoble (INPG-CNRS-UJF), Domaine Universitaire, France
  2. Industrial Electronics and Control Eng., Faculty of Electronic Engineering, Minufiya Unv, Shaqra Unv., KSA
  3. Jubail Industrial College, KSA
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Abstract

This paper models and supervises kernel railroad crossing (KRC) systems using timed Petri nets and focuses on the control synthesis method, which consists in computing new firing conditions for the timed automaton (TA) transitions so that the forbidden locations are no longer reachable. The system to be modeled and supervised using timed Petri nets is converted to a TA and is analyzed using automata so that the functioning of the system respects given specifications. The main reason of using automata is that although the timed Petri nets supervisor controls the system, it fails to define the time units needed for the undefined time of a transition. Simulation results show the soundness of KRC modeling and supervision in the sense of ensuring the safety and maximizing utility (the gate should be opened as long as possible).

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