IEEE1588高精度同步算法的研究和实现

Realization of IEEE1588 high-precision synchronous algorithm

随着网络技术的发展,分布式控制系统中对时间同步的要求越来越高。为了满足某些领域中微秒级时间同步的要求,本文对IEEE1588高精度时间同步进行了研究,对该算法实现高精度同步的方法进行了阐述,同时对实际系统中存在的问题进行了剖析,根据分析结果,采用系统晶振补偿和OffsetTime滤波的方法对系统进行了完善,并进行了实验。实验结果表明,通过晶振补偿和OffsetTime滤波很大程度上提高了同步精度,达到了高精度同步系统的要求。

With the rapid development of network, the synchronization of different devices in a distributed system becomes more and more important. To reach the required precision （ μs level） in the applications of some special fields, we made a research on high- precision synchronization method of IEEE1588. First, the theory of the IEEE1588 （Precision Clock Synchronization Protocol） was introduced, and then the problems existed in actual systems were analyzed. According to the result of the analysis, we improved the system by use of crystal oscillation compensation and offset time filtering, and carried out corresponding experiments. The resuit showed that the synchronization precision was improved greatly by using the compensation and the filtering,which has reached the required precision.