Design of Networked Control Systems (NCSs) on the basis of interplays between Quality of Control and Quality of Service

Xuan Hung Nguyen (1) , Guy Juanole (1)

1 LAAS-SARA - Équipe Services et Architectures pour Réseaux Avancés

The goal of this paper is to consider a co-design approach between the controller of a process control application and the frame scheduling of a Local Area Network (LAN). More precisely we present a bi directional relation between the Quality of Control (QoC) provided by the controller and the Quality of Service (QoS) provided by the LAN (relation noted QoS⇋QoC). We present, first, the implementation of the relation QoS→QoC on the basis of a compensation method for time delays called dominant pole method, and second, the implementation of the relation QoC→QoS on the basis of the hybrid priorities for the frame scheduling. The final objective is the implementation of the bidirectional relation QoS⇋QoC which is the combination of the both relations QoS→QoC and QoC→QoS in order to have a more efficient NCSs design.

Mots clés: Networked Control System; MAC protocol; Automatic Control; Co-Design; Quality of Service; Quality of Control; delay compensation

Domaines: Systèmes embarqués

Xuan Hung Nguyen, Guy Juanole. Design of Networked Control Systems (NCSs) on the basis of interplays between Quality of Control and Quality of Service. 7th IEEE International Symposium on Industrial Embedded Systems (SIES'12), Jun 2012, Karlsruhe, Germany. pp.9. ⟨hal-00668491v2⟩