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Front. Inform. Technol. Electron. Eng.  2013, Vol. 14 Issue (6): 433-448    DOI: 10.1631/jzus.C1200363
    
Improving the real-time performance of Ethernet for plant automation (EPA) based industrial networks
Li Lu, Dong-qin Feng, Jian Chu
Institute of Cyber-Systems and Control, Zhejiang University, Hangzhou 310027, China; State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310027, China
Improving the real-time performance of Ethernet for plant automation (EPA) based industrial networks
Li Lu, Dong-qin Feng, Jian Chu
Institute of Cyber-Systems and Control, Zhejiang University, Hangzhou 310027, China; State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310027, China
 全文: PDF 
摘要： 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.
关键词： Ethernet for plant automation (EPA);  Fast real-time (FRT) system;  Real-time Ethernet (RTE);  Scheduling scheme    
Abstract: 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.
Key words: Ethernet for plant automation (EPA)    Fast real-time (FRT) system    Real-time Ethernet (RTE)    Scheduling scheme
收稿日期: 2012-12-19 出版日期: 2013-06-04
CLC:  TP293  
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引用本文:

Li Lu, Dong-qin Feng, Jian Chu. Improving the real-time performance of Ethernet for plant automation (EPA) based industrial networks. Front. Inform. Technol. Electron. Eng., 2013, 14(6): 433-448.

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http://www.zjujournals.com/xueshu/fitee/CN/10.1631/jzus.C1200363    或    http://www.zjujournals.com/xueshu/fitee/CN/Y2013/V14/I6/433

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