Authors: Melha Bitam, Hassane Alla
Addresses: Laboratoire d'Automatique de Grenoble, Domaine Universitaire BP 46, Saint Martin d'Heres 38402, France. ' Laboratoire d'Automatique de Grenoble, Domaine Universitaire BP 46, Saint Martin d'Heres 38402, France
Abstract: Distributed control systems are used to monitor and control distributed equipment. With the growth of communication networks, severe congestion problems appeared. To avoid dropping packets and then guarantee the needs of distributed systems in terms of performances and of quality service, some algorithms were put into Transport Control Protocol (TCP). This paper focused on network modelling, study of network dynamic behaviour and of congestion avoidance. It is possible with this network modelling to determine the influence of communication networks on the transmission of control signals. The paper also presents the modelling of a communication line in internet environment. The behaviour of the communication line is modelled as a continuous system. The behaviour of the TCP protocols is seen as a Discrete Event System (DES) model. We choose hybrid Petri Nets (PNs) as a unique modelling tool, as it gives accurate models of the complex functions found in internet connections.
Keywords: distributed control systems; DCS; network modelling; performance evaluation; hybrid Petri nets; communication networks; congestion avoidance; internet; discrete event system modelling.
International Journal of Computer Applications in Technology, 2006 Vol.25 No.4, pp.218 - 226
Published online: 28 Mar 2006 *Full-text access for editors Access for subscribers Purchase this article Comment on this article