| EPA工业测控网络的时钟同步分析与改进 |
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| 引用本文： | 蒋荣金,尚群立,余善恩.EPA工业测控网络的时钟同步分析与改进[J].机电工程,2009,26(1):17-20. |
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| 作者姓名： | 蒋荣金 尚群立 余善恩 |
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| 作者单位： | 杭州电子科技大学,自动化学院,浙江,杭州,310018 |
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| 基金项目： | 国家自然科学基金，浙江省科技计划重点项目 |
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| 摘 要： | 为了提高时钟同步精度以保证通信调度的确定性，对比分析了工业网络常用几类时钟同步方法，重点剖析了IEEE1588时钟同步系统，深入探讨了PTP系统的软件实现，对源代码移植作了必要的说明，分析了时钟同步精度不高的原因，并提出了三大改进方案，测试了改进后的系统。测试结果表明，采用了改进方案后系统的时钟同步精确性得到了较大的提高。
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| 关 键 词： | EPA 工业以太网 时钟同步 IEEE1588 线路延时 时钟偏差 |
Analysis and improvement of time synchronization in EPA |
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| JIANG Rong-jin,SHANG Qun-li,YU Shan-en.Analysis and improvement of time synchronization in EPA[J].Mechanical & Electrical Engineering Magazine,2009,26(1):17-20. |
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| Authors: | JIANG Rong-jin SHANG Qun-li YU Shan-en |
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| Affiliation: | School of Automation;Hangzhou Dianzi University;Hangzhou 310018;China |
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| Abstract: | In order to improve the time synchronization precision,insure the communication timely,several types of clock synchronization methods were compared.The IEEE1588 clock synchronization system was analyzed.The PTP system software programming was discussed.Some source code transplanting methods were introduced.The root cause of the low precision was gotten,three major improving methods were provided,the improved system was tested.The results of test indicate that the high precision time synchronization has been... |
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| Keywords: | EPA IEEE1588 |
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