基于Windows NT实时扩展的虚拟数控系统支撑环境研究  

Research on Virtual NC System Oriented Supporting Environment Based on Windows NT & RTX

作　　者：刘世卿[1] 尤涛[2] 李西琴[1] 杜承烈[2] 

机构地区：[1]西北工业大学现代设计与集成制造教育部重点实验室,西安710072 [2]西北工业大学计算机学院,西安710072

出　　处：《机床与液压》2008年第3期8-12,共5页Machine Tool & Hydraulics

基　　金：国家863/CIMS主题资助项目(2001AA412020,2003AA414320);航空科学基金资助项目(04H53064)

摘　　要：为了提高基于局域网的虚拟数控系统实时性和可靠性,提出一种基于WindowsNT及实时扩展的虚拟数控系统支撑环境。在该架构中,操作系统层面设计为实时性弱的任务在Windows内核上运行,而实时性强的任务则分布在RTX内核之上;网络层面为基于RT-TCP/IP协议设计了虚拟数控的状态信息与控制信息传输网络;信息支撑层面采用基于RTX内存数据库的试验数据库。并且通过试验测试了3个层面的实时性,分析了层面间的实时性约束。结合某虚拟铣削系统再设计与实施,提高了系统的运行效率和可靠性。To improve the real-time behavior and reliability of virtual CNC system based on LAN, a new virtual CNC system oriented supporting environment based on Windows NT and RTX was proposed. In this architecture, low real-time tasks ran on Windows while high real-time tasks ran on RTX; control and status information network of virtual CNC based on RT-TCP/IP was designed; virtual CNC testing database based on RTX memory database was used. Real-time behaviors of the three parts above were tested, and the real-time restrict between them was analyzed. According to re-design and rebuilding on one NC milling system, efficiency and reliability was improved.

关 键 词：WINDOWS NT与实时扩展 虚拟数控 实时以太网 实时数据库 

分 类 号：TP391.73[自动化与计算机技术—计算机应用技术]