| 一种基于PTP协议的局域网高精度时钟同步方法 |
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| 引用本文： | 宋波,孙超,姜守达.一种基于PTP协议的局域网高精度时钟同步方法[J].自动化技术与应用,2010,29(1):67-70,74. |
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| 作者姓名： | 宋波 孙超 姜守达 |
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| 作者单位： | 哈尔滨工业大学,自动化测试与控制研究所,黑龙江,哈尔滨,150001 |
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| 摘 要： | PTP协议是IEEE-1588中定义的一种精密时钟同步协议，广泛应用于分布式系统中。但当采用纯软件实现时，同步精度受到网卡的缓存效应、网络的平稳性和操作系统的进程调度等多种因素的影响，难以达到亚毫秒的精度。本文通过分析各种影响因素的特点，结合PTP协议时钟同步机制，提出了一种高精度时钟同步方法，通过采用握手机制以及对测量数据进行处理，有效减弱了各种因素的影响，并结合基于CPU定时器构造的高精度时钟，实现了亚毫秒精度的时钟同步。
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| 关 键 词： | IEEE1588 PTP协议 时钟同步 高精度 |
A High-Precision Local Area Network Clock Synchronization Method Based on PTP Protocol |
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| SONG Bo,SUN Chao,JIANG Shou-da.A High-Precision Local Area Network Clock Synchronization Method Based on PTP Protocol[J].Techniques of Automation and Applications,2010,29(1):67-70,74. |
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| Authors: | SONG Bo SUN Chao JIANG Shou-da |
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| Affiliation: | SONG Bo,SUN Chao,JIANG Shou-da(Automatic Test , Control Institute,Harbin Institute of Technology,Harbin 150080 China) |
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| Abstract: | PTP protocol is defined in IEEE-1588 as a precision clock synchronization protocol,which is widely used in distributed systems.However,when implemented by software,the synchronization accuracy will under the influence of the buffer effect by the network card,the smoothness of network and the scheduling of operating system,and other factors.So it is difficult to achieve sub-millisecond accuracy.In this paper,by analyzing the characteristics of the various influencing factors,according to clock synchronizatio... |
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| Keywords: | IEEE1588 |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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