数控系统网络通信平台的设计与实现  

Designed and implementation of network communication platform of numerical control system

作　　者：李校慧[1,2,3] 于东[2,3] 胡毅[2,3] 冯强[1,2,3] 陆小虎[1,2,3] 

机构地区：[1]中国科学院研究生院,北京100039 [2]中国科学院沈阳计算技术研究所,辽宁沈阳110168 [3]中国科学院沈阳计算技术研究所高精数控有限公司,辽宁沈阳110168

出　　处：《计算机工程与设计》2013年第4期1141-1146,共6页Computer Engineering and Design

基　　金：国家973重点基础研究发展计划基金项目(2011CB302400);国家科技重大专项基金项目"高档数控机床与基础制造装备"(2011ZX04016-071)

摘　　要：针对CMS/NML通信系统无法应用于内核空间的问题,提出了一种SM_NML通信机制,为本地内核与用户进程提供了统一的通信接口,还可以方便地与CMS/NML结合实现内核进程与远程进程通信。该通信机制以字符设备为存储介质,利用缓冲池管理和读写管理为通信提供了底层支持,并在此基础上进行了封装,为用户提供了顶层通信接口。分析了SM_NML通信机制的通信延迟,给出了一个具体的应用实例,验证了其可用性。To solve the problem that CMS/NML cannot be applied in the kernel space, a kind of communication mechanism called SM _ NML is proposed, which provide uniform communication interface for local kernel and user processes. The commu- nication of kernel processes and remote processes is easily implemented by combining SM _ NML with CMS/NML. SM_ NML use a character device to be a storage media, and the underlying function is implemented by managing the buffers and reading and writing buffers. Based on these, the upper level interface is privided to user by package the services. Then, the delay of SM_ NML communica- tion mechanism is evaluated. Finally, the availability of the proposed communication mechanism is validated by a specific application.

关 键 词：数控系统 网络通信 通信管理系统 中性消息语言 基于共享内存的类中性消息语言 通信接口 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]