基于ARM+FPGA的电火花小孔机床数控系统设计  

CNC System Design of EDM Small Hole Machine Based on ARM+FPGA

作　　者：张晨馨 聂子龙 蒋毅 俞建峰 化春键 ZHANG Chenxin;NIE Zilong;JIANG Yi;YU Jianfeng;HUA Chunjian(Key Laboratory of Advanced Manufacturing Equipment Technology of Jiangsu Province,School of Mechanical Engineering,Jiangnan University,Wuxi 214122,China)

机构地区：[1]江南大学机械工程学院,江苏省食品先进制造装备技术重点实验室,江苏无锡214122

出　　处：《电加工与模具》2024年第2期21-25,共5页Electromachining & Mould

基　　金：国家自然科学基金项目(51675233)。

摘　　要：针对现阶段电火花小孔加工数控系统兼容性差、实时性低、模块冗余的缺点,设计开发了一款基于嵌入式ARM+FPGA架构的电火花小孔加工数控系统。将上位机的功能合理划分成多个功能模块,设计成不同的软件进程,并合理分配CPU资源,提高系统可靠性和实时性。上位机使用RS485总线直接与伺服驱动器通信,并直接计算出电机控制指令,通过工业以太网传输至FPGA输出脉冲信号控制电机和硬件设备,形成软数控系统。通过电火花小孔加工和电火花铣削试验表明,设计的软数控系统稳定可靠,加工效果良好。Aiming at the shortcomings of poor compatibility,low real-time performance and module redundancy of EDM small hole machiningCNCsystem at present,a EDM small hole machining CNC system based on embedded ARM+FPGAarchitecture is designed and developed.The functions of the host computer are reasonably divided into multiple functional modules,designed into different software processes,and CPUresources are reasonably allocated to improve system reliability and real-time performance.The upper computer uses RS485 bus to directly communicate with the servo driver,and directly calculates the motor control instruction,which is transmitted to the FPGA output pulse signal through the industrial Ethernet to control the motor and hardware equipment,forming a soft CNC system.The experiments of EDM small hole machining and EDM milling show that the designed soft CNC system is stable and reliable,and the processing effect is fine.

关 键 词：数控系统 嵌入式 电火花加工 软数控系统 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]