【摘要】 在工业控制领域,时钟同步精度是影响工业以太网实时性的一个重要因素。为了满足工业以太网对时钟同步的高精度要求,本文对IEEE1588精确时间同步协议进行了研究,阐述了该算法实现高精度同步的原理,并针对以太网通讯路径不对称的情况,提出了一种同步改进算法,通过对同步延迟计算进行加权修正,提高了时钟同步精度。最后,在自行设计的测试系统中进行了测试,测试结果表明,改进算法有效提高了路径不对称条件下的时钟同步精度。更多还原

【Abstract】 In the field of industrial control,clock synchronization precision is an important factor that affects the real-time performance of the industrial Ethernet.In order to satisfy the request for precise clock synchronization in the industrial Ethernet,this paper conducts the research to the IEEE1588 high-precision time synchronization protocol,carries on the elaboration to the principle of high-precision synchronization,proposes the corresponding improvement algorithm for asymmetric communication paths.Finally,the algorithm is tested in a self-designed system.The results of test show that the improved algorithm can effectively increase the clock synchronization accuracy under asymmetric communication paths.更多还原