Improving Medium Access Control for Can-based Networked Control Systems

In the context of Networked Control Systems (NCS), the scheduling of messages is an important mechanism because it strongly influences the Quality of Service (QoS) and the Quality of Control (QoC) of process control applications. The goal of this paper is to propose a hybrid priority scheme to improve standard CAN (Controller Area Network)network protocol in order to improve the Quality of Control for Networked Control Systems. We consider the implementation of process control applications on a standard CAN network and evaluate the Quality of Control; then we show the strong points of the proposed hybrid priority scheme by comparing the QoC provided by different priority schemes