Formalisation And Simulation Of Operating Rules
Using Coloured Petri Nets
Author(s)
O. Lahlou, P. Bon & L. Allain
Abstract
The operational rules safety assessment of rail systems is a key element of the rail
success to improve the competitiveness. In this context, the goal of this paper is
to present a process for a safety analysis of operating rules. The first step of this
process describes the operating rules and their formalisation using coloured Petri
nets by means of a systematic method. The second step concerns the simulation of
the resulting nets to check their properties.
A group of ERTMS (European Rail Traffic Management System) operating
rules, stemmed from HEROE (Harmonization of European rail Rules for
Operating) project concerning the departure of a train will be used as an example.
These rules are \“Departure”, \“Train preparation”, \“Permission of train movement
authority” and \“Written orders”.
Starting with a reminder of our systematic method of description based on
coloured Petri nets (CPN), we show that the main advantage of this method is
to standardize the rules description.
Then, the properties of the resulting Petri nets are checked with appropriate
tools, with a view to verifying liveness and to detecting possible deadlocks.
Finally, we think that the process of formalisation and simulation will allow to
check the consistency and the integrity of operating rules.
1 Introduction
From the perspective to harmonize the European railway system, ERTMS
(European Rail Traffic Management System) [1], which is the new European
standard for train control systems, has been developed and must be implemented
for upgrades of high-speed and conventional lines in accordance to the European
Commission laws.
Keywords
Related Book
Other papers in this volume
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