Abstract

A fundamental requirement of distributed control systems is to ensure real-time traffic. This traffic can be split into two groups: sporadic and periodic. Among RTLAN proposals, CAN is well adapted to sporadic message transfers whereas FIP has been optimized for periodic traffic that is handle in a deterministic way. The goal of this paper is to adapt the Producer-Distributor-Consumer model (FIP) to CAN in order to ensure the timing requirements of periodic traffic. We propose an application layer that uses CAN services based on the PDC model. Two architectures of distributor are presented: decentralized and centralized. We show how this model may coexist with the client server model as defined in the CAN application layer.

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