Operational safety of control systems- Examples of applications and reminders on the PNs

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S8263 V1 Article

Operational safety of control systems- Examples of applications and reminders on the PNs

Authors : Jean-François AUBRY, Éric CHATELET

Publication date: September 10, 2008 | Lire en français

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Overview

ABSTRACT

Control systems play a major part in the piloting of modern technological systems. They are notably present in numerous industrial and transport systems in which they contribute to the carrying out of complex missions. The analysis methods of operational safety (OS) allow for the anticipation and control of their malfunctions. In this article, an example of application is illustrates the various existing methods of operational safety. It consists of a regulation system of the temperature of an electric furnace composed of a continuous regulator (proportional and integral for instance). A certain number of reminders concerning the Petri networks (PNs) are presented on this occasion, networks which are true models for the description of discrete event systems.

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 INTRODUCTION

In this article, which follows on from [S 8 262] , we give an example of an application based on the various methods for analyzing operational safety. We then present a number of reminders concerning Petri nets (RdP).

Introduced in the early 1960s by Carl Adam Petri, Petri nets (RdP) are models for describing discrete-event systems.

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