Conference Proceeding

Integrated approach based on High Level Petri Nets for evaluating Networked Control Systems

Autom. Res. center of Nancy, Vandoeuvre-les-Nancy
07/2008; DOI:10.1109/MED.2008.4602274 pp.1118 - 1123 In proceeding of: Control and Automation, 2008 16th Mediterranean Conference on
Source: IEEE Xplore

ABSTRACT The aim of this paper is to propose an integrated modelling environment to represent globally the networked control systems (NCS) behaviour by using the high level Petri nets (HLPN) formalism. This work considers NCS based on switched Ethernet architectures. This communication architecture is modelled with HLPN and is evaluated according to different scheduling mechanisms and traffic load. After that, NCS model based on HLPN is proposed. This model integrates the Ethernet switch model and applicative environment of NCS: controller, process... Finally, a strategy to control the network in order to adapt the quality of service (QoS) according to the quality of control (QoC) required by the application is proposed. This strategy is based on a weighted round robin policy. The obtained results show that the scheduling mechanisms enable to improve the performance of communication system and then to improve the application performances.

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Keywords

application performances
 
communication architecture
 
communication system
 
different scheduling mechanisms
 
Ethernet architectures
 
HLPN
 
integrated modelling environment
 
level Petri nets
 
model integrates
 
NCS
 
NCS model
 
networked control systems
 
obtained results
 
scheduling mechanisms
 
traffic load
 
weighted