基于Linux平台的电火花数控系统  

EDM CNC SYSTEM BASED ON LINUX KERNEL

作　　者：李志勇[1] 赵万生[1] 吕善进[1] 宋颖慧[2] 

机构地区：[1]哈尔滨工业大学特种加工与机电控制研究所,哈尔滨150001 [2]哈尔滨工业大学

出　　处：《机械工程学报》2003年第11期136-140,共5页Journal of Mechanical Engineering

基　　金：总装备部预研项目(41318.3.2.5);哈尔滨工业大学跨学科交叉基金(HIT.MD2001.34)

摘　　要：分析了基于Linux平台的电火花数控系统软件结构,提出了数控系统软件在Linux内核态和用户态同时运行的设计方案。在这种方案中操作系统同时存在Linux内核和NC核两个内核,NC核完成数控系统的实时控制功能,可以抢占Linux内核和Linux进程的处理机时间。数控系统的外围软件由多个用户进程实现,仅在NC核放弃处理机时运行。这种机制可以满足电火花系统的实时响应要求,同时外围数控软件能够获得全面的Linux系统支持。A new EDM numerical control system based on the Linux platform that runs in both the kernel mode and the user mode is implemented. The operating system is designed with two kernels existing together-the Linux kernel and the NC kernel. The NC kernel accomplishes real-time control functions of the EDM system and can preempt the Linux kernel. The peripheral software of the EDM system, which is implemented in several user processes, will run only when the NC kernel releases the processor. This mechanism satisfies real-time response requirement of the EDM system. At the same time, other peripheral NC software can get all support provided by Linux system.

关 键 词：数控系统 电火花加工 操作系统 LINUX平台 

分 类 号：TG661[金属学及工艺—金属切削加工及机床] TP273[自动化与计算机技术—检测技术与自动化装置]