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上海电力大学学报:2017,33(6):581-585
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影响IEEE 1588时钟同步精度的关键因素
(上海电力学院 电子与信息工程学院)
Analysis of Key Factors Affecting the Accuracy of IEEE 1588 Clock Synchronization
(School of Electronics and Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China)
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投稿时间:2016-03-16    
中文摘要: 针对IEEE 1588精确时钟同步协议及系统仿真模型进行了深入的研究.研究结果表明,主时钟或从时钟的晶振漂移对同步精度误差产生相同程度的影响,仅主时钟(或从时钟)晶振漂移参数变化与同步精度误差变化关系近似为线性,其变化率约为4.0×10-5,同步周期时间对同步精度误差影响可分为两个部分,当同步周期小于1.6 s时,对精度误差影响相对较小;而当同步周期大于1.8 s时,同步精度误差随同步周期增加呈现急剧上升的趋势.
中文关键词: 晶振漂移  IEEE 1588协议  同步周期
Abstract:The effects of crystal clock frequency drift and synchronization on synchronization accuracy of IEEE 1588 master and slave clocks through simulations are studied.Results show that frequency drift on the master or slave side has the same impact on synchronization accuracy.Given the changes of frequency drift parameter on only one side,synchronization accuracy curve changes linearly at the rate of 4.0×10-5.The impact by synchronization interval can be divided into two regions.When the interval is less than 1.6 seconds,synchronization accuracy changes at a relatively slow rate.When the interval is larger than 1.8 seconds,synchronization accuracy deteriorates dramatically.
文章编号:20176014     中图分类号:    文献标志码:
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引用文本:
赵勇,高彦杰.影响IEEE 1588时钟同步精度的关键因素[J].上海电力大学学报,2017,33(6):581-585.
ZHAO Yong,GAO Yanjie.Analysis of Key Factors Affecting the Accuracy of IEEE 1588 Clock Synchronization[J].Journal of Shanghai University of Electric Power,2017,33(6):581-585.