共存实时以太网协议的时钟同步精度评价

2008 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control and Communication Pub Date : 2008-10-24 DOI:10.1109/ISPCS.2008.4659219

P. Ferrari, A. Flammini, S. Rinaldi, G. Gaderer

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引用次数: 12

摘要

本文研究了工业应用中的实时以太网(RTE)协议及其时钟同步性能。实际上，如果在共享相同基础设施的同一网络上共存不同的RTE协议，时钟同步能力可能会受到影响。本文介绍了一个仿真环境来评估RTE协议的共存性。通过与实际网络测量数据的比较，对所提出的工具进行了描述和验证。最后，给出了仿真结果:显示了以太网/IP与IEEE1588-PTP在同步PROFINET IO网络上传输时的行为，并提出了一些改进PTP跟踪算法以简化共存。

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Evaluation of clock synchronization accuracy of coexistent Real-Time Ethernet protocols

This paper investigates Real-Time Ethernet (RTE) protocols for industrial applications and their clock synchronization performance. In fact, if different RTE protocols coexist on the same network sharing the same infrastructure, clock synchronization capabilities can be affected. This paper introduces a simulation environment to evaluate coexistence of RTE protocols. The proposed tool is described and validated by comparison with measurement data taken from real networks. Finally, simulation results are presented: the behavior of Ethernet/IP with IEEE1588-PTP, when it is transported over an isochronous PROFINET IO network, is shown and some improvements to the PTP tracking algorithms to ease coexistence are proposed.

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2008 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control and Communication

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