可重构分布式数控系统的设计与实现  

Design & implementation of reconfigurable distributed numerical control system

作　　者：郑飞[1] 王时龙[2] 简毅[2] 

机构地区：[1]重庆大学软件学院,重庆400044 [2]重庆大学机械工程学院,重庆400044

出　　处：《计算机集成制造系统》2008年第4期637-643,共7页Computer Integrated Manufacturing Systems

基　　金：重庆市自然科学基金重点资助项目(8483)~~

摘　　要：为解决分布式数控系统在制造单元重新配置后难于重构的问题,提出一种可重构分布式数控系统的设计和实现方案。该方案通过层次化体系结构设计,将系统各个模块间的耦合降至最小;通过工业以太网、嵌入式智能终端和软插件技术来构建分布式数控硬件通信平台;对已提出的可重构软件系统框架进行了扩充,加入了基于角色的访问控制模块和基于抽象工厂模式的数据访问模块,并采用扩展后的框架开发了分布式数控管理软件,以浏览器/服务器模式对分布式数控相关制造资源进行统一、动态和有效的管理。基于此方案开发出的分布式数控系统能够通过简单的配置实现重构,迅速适应制造单元的变化。Most Distributed Numerical Control （DNC） systems were difficult to reconfigure according to the change of manufacturing cells. To solve this problem, a design and implementation scheme for reconfigurable DNC system was proposed. The whole system was designed by layered architecture which was to minimize the coupling of the system modules. The hardware platform for DNC communication was constructed by using embedded terminals connected to machines and DNC server, as well as the plug-in library at the server side. The Browser/Server （B/S） structured DNC management software was designed by applying the reconfigurable software framework. Moreover, a Role-Based Access Control （RBAC） module and a data access module based on the abstract factory pattern were added into the framework to improve the reconfiguration ability. The DNC system developed with the proposed method could quickly adapt itself to the change of manufacturing cells with simple configurations. Dynamic and effective management of the DNC-related resources could be realized.

关 键 词：可重构 分布式数控 嵌入式智能终端 软插件技术 基于角色的访问控制 抽象工厂模式 

分 类 号：TP311.52[自动化与计算机技术—计算机软件与理论]