IEEE 1588时钟同步技术在分布式系统中的研究*

摘要

In order to realize high accuracy synchronous data acquisition and control in distributed system ,a distributed system clock synchronization method based on IEEE 1588 protocol is proposed .This paper analyzes the principle of master clock algorithm and the time synchronization process of local clock and master clock ,puts forward a IEEE 1588 realization scheme ,provides a hardware design method ,and elaborates the master‐slave clock software design process .On the basis of the work ,verifies the master‐slave clock synchronization .The experiments show that the method is feasible ,clock synchro‐nization precision can reach microsecond ,and may serve as a reference ,when the further application of IEEE 1588 in distrib‐uted industrial control systems is concerned .%为实现分布式系统高精度同步数据采集及实时控制，提出一种基于 IEEE 1588协议的分布式系统时钟同步方法。论文深入分析了IEEE 1588协议的算法原理和本地时钟同步主时钟的过程，提出了时间戳的IEEE 1588实现方案，提供了硬件设计方法，阐述了主从时钟的软件设计流程，在此基础上对主从时钟的同步进行了验证。实验证明：该方法是切实可行的，同步结果达到了10μs同步，为下一步将IEEE 1588大规模应用到分布式工业控制系统中起到了借鉴的作用。