数控系统以太网接口技术的研究  

Research on Ethernet Interface Technology Used in CNC System

作　　者：白玉成[1] 唐小琦[1] 陈吉红[1,2] 周向东[1] 

机构地区：[1]华中科技大学国家数控工程技术研究中心,武汉430074 [2]武汉华中数控股份有限公司,武汉430074

出　　处：《组合机床与自动化加工技术》2009年第2期44-49,共6页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家重点基础研究发展计划(973计划)项目(2005CB724101);国家自然科学基金项目(50875099)

摘　　要：分析了数控系统对现场总线接口要求,列举了国内外总线型数控系统常见组建方案及其优缺点,通过构建一种基于广播帧同步的以太网新的组建方案提出了一种数控系统通讯协议——EtherCNC,结合伺服本身结构特点提出伺服驱动系统电流环同步校正原理,为解决伺服驱动器控制周期与网络通讯周期不匹配问题提出了位置控制指令细分技术,最后,通过网络同步性测试实验检验了总线同步性能。实验和应用证实本方案有效可行。The requirement of field bus for CNC system is analysis. The set-up scheme of network CNC system home and abroad is enumerated and the advantages and disadvantages are pointed out. Through set up an original scheme of network CNC system a communication protocol used in CNC system is promoted. The servo system current-loop synchronization adjustment principle is put forward according to servo structure. The position command subdivision tech is proposed to match the servo control cycle and communication cycle. At last, network performance test experiment and application had been confirmed that the scheme is effective and feasible.

关 键 词：工业以太网 EtherCNC 数控系统 实时 同步 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]