Improving the real-time performance of Ethernet for plant automation （EPA） based industrial networks

Real-time Ethernet （RTE） control systems with critical real-time requirements are called fast real-time （FRT） systems. To improve the real-time performance of Ethernet for plant automation （EPA）, we propose an EPA-FRT scheme. The minimum macrocycle of EPA networks is reduced by redefining the EPA ne...

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Bibliographic Details
Published in:浙江大学学报：C卷英文版 2013, Vol.14 (6), p.433-448
Main Author: Li LU Dong-qin FENGT Jian CHU
Format: Article
Language:English
Online Access:Get full text
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Summary:Real-time Ethernet （RTE） control systems with critical real-time requirements are called fast real-time （FRT） systems. To improve the real-time performance of Ethernet for plant automation （EPA）, we propose an EPA-FRT scheme. The minimum macrocycle of EPA networks is reduced by redefining the EPA network frame format, and the synchronization process is modified to acquire higher accuracy. A multi-segmented topology with a scheduling scheme is introduced to increase effective bandwidth utilization and reduce protocol overheads, and thus to shorten the communication cycle significantly. Performance analysis and practical tests on a prototype system show the effectiveness of the proposed scheme, which achieves the best performance at small periodic payload in large scale systems.
ISSN:1869-1951
1869-196X