实时以太网EtherMAC树形网络设计与实现  

The Design and Implementation of Real-time Ethernet EtherMAC Tree Network

作　　者：靳东[1] 胡天亮[1,2] 张承瑞[1,2] 

机构地区：[1]山东大学机械工程学院,济南250061 [2]山东大学高效洁净机械制造教育部重点实验室,济南250061

出　　处：《机电一体化》2013年第8期64-68,共5页Mechatronics

基　　金：国家自然科学基金(51075241)资助项目

摘　　要：为提升国内工业以太网总线性能,提出一种基于实时以太网EtherMAC的二叉树形网络拓扑结构。EtherMAC树形网络充分利用了二叉树的结构优势,通过FPGA的并行处理机制实现数据帧在各子树高效地传输和执行,并依靠分布式时钟和物理传输延时补偿的方式保证各子节点的同步性。实验证明,该方案能减少工业以太网在子节点间的传输延时,节点间同步抖动很小,从而为高速高精的运动控制提供了一种开放式的高性能平台。In order to promote the performance of domestic industrial Ethernet bus, a binary tree network topology based on real-time Ethernet EtherMAC is proposed. The EtherMAC tree network makes full use of the advantages of binary tree structure, and achieves the data frame transmission and implementation of highly efficient in each sub tree by the parallel processing mechanism of FPGA. At the same time, the network relies on distributed clock and physical transmission delay compensation to guarantee the synchronization of the child nodes. The experiments show that the scheme can reduce the industrial ethernet transmission delay between the child nodes, and the synchronization jitter of nodes is very small. In this way an open-architecture platform is provided for the high speed and high precision motion control.

关 键 词：实时以太网 树形结构 FPGA 同步 运动控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]