Digitální knihovnaUPCE
 

The choice of the appropriate structure of the control system with respect to the required availability and safety

Konferenční objekt
Náhled

Datum publikování

2010

Vedoucí práce

Oponent

Název časopisu

Název svazku

Vydavatel

Univerzita Pardubice

Abstrakt

Nowadays, the programmable logic controllers (PLCs) are often in the role of control systems. They are used primarily for control of technological processes, but the exception is neither the utilization in transport. As an example can be mentioned systems of rail safety technique: system MODEST from the company 1Signální, ELEKSA system from Siemens, the system SPA 4 from Bombardier Corporate. The PLC producers continually improve their properties. The aim of the producers is to extend their application possibilities. Therefore there can be found in the offers of PLC producers PLC with attribute fail-safe, eventually fault-tolerant. PLCs are modular systems, so their availability and safety depends on the chosen structure of control system. The choice of structure is appropriate to base on the modeling of monitored properties. Another reason to create a suitable model, eventually models, is that the certificate of producer about reached level of safety PLC says nothing about the application of PLC. The correct model must also take into account the application individualities (e.g. the way of sensors connecting, actuators, etc.). The article compares the availability and safety of various structures of control systems based on PLC on the ground of created models.

Rozsah stran

p. 171-176

ISSN

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Projekt

Zdrojový dokument

Vydavatelská verze

Přístup k e-verzi

open access

Název akce

5th International Scientific Conference "Theoretical and Practical Issues in Transport" (11-12 February 2010, Pardubice, Czech Republic)

ISBN

978-80-7395-245-7

Studijní obor

Studijní program

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Umístění tištěné verze

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Klíčová slova

control system, safety, availability

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