摘要： 实时工业以太网技术不能满足高性能运动控制领域对高同步精度和强实时性的应用需求。为解决该问题，利用快速实时工业以太网(EPA-FRT)中的快速通信调度和精确同步技术提高网络系统的实时性和同步精度，给出EPA-FRT的6层通信模型及2层网络结构。性能测试结果表明，EPA-FRT系统的通信周期在1 ms内，同步偏差在1 μs内，能够满足高性能运动控制领域对网络通信的需求。
关键词:
快速实时工业以太网,
运动控制,
通信调度,
实时以太网,
时钟同步
Abstract: Real-time Ethernet for Plant Automation(EPA-RT) technology can not meet the actual needs of high-performance motion control. To resolve the problem, this paper uses fast schedule algorithm and precise synchronization technology of Fast Real-time Ethernet for Plant Automation(EPA-FRT) technology to achieve better real-time performance and higher synchronization accuracy. Six-layer communication model and two-layer network structure are analyzed. Performance test result of EPA-FRT system shows that the communication cycle time is less than l ms and the synchronization deviation is less than 1 μs, so the EPA-FRT system can meet the demands of high-performance motion control system.
Key words:
Fast Real-time Ethernet for Plant Automation(EPA-FRT),
motion control,
communication schedule,
real-time Ethernet,
clock synchronization
中图分类号:
赵飞翔, 冯冬芹, 胡协和. 快速实时工业以太网的研究[J]. 计算机工程, 2011, 37(16): 238-240.
DIAO Fei-Xiang, FENG Dong-Qin, HU Xie-He. Research on Fast Real-time Ethernet for Plant Automation[J]. Computer Engineering, 2011, 37(16): 238-240.