脉冲MIG焊接电源数字控制系统设计  

Design of Digital Control System for Pulsed MIG Welding Power Source

作　　者：庞清乐[1] 

机构地区：[1]山东工商学院,山东烟台264005

出　　处：《电力电子技术》2011年第11期14-16,共3页Power Electronics

基　　金：国家自然科学基金(50777040);中国博士后科学基金(20090461204);山东省自然科学基金(ZR2010EL030)~~

摘　　要：针对模拟控制和单片机控制的MIG焊接电源控制系统灵活性差、控制精度低及可靠性差等缺点,设计了基于32位微处理器(MCF5213CAF80)和FPGA的数字控制系统。介绍了控制系统的整体硬件电路设计方案、采样和A/D转换电路、PWM驱动电路。同时,介绍了FPGA的软件设计和在MCF5213CAF80上的嵌入式操作系统设计。实验结果表明,基于微处理器和FPGA的脉冲MIG焊接电源控制系统动态响应快、可靠性高、弧长控制稳定。Control system based on microcontroller （MCF5213CAF80） and filed programmable gated array （FPGA） for MIG welding power source is designed to solve the deficiencies in the control system based on analogous control technology and single-chip control technology, such as poor flexibility,control precision and reliability.The overall hardware circuit scheme, sampling and A/D converter circuits and PWM drive circuits are presented.Furthermore, the software design of FPGA and the software design of real-time embedded operating system on MCF5213CAF80 are proposed.The experimental results show that the control system based on microcontroller and FPGA for pulsed MIG welding power source has the advantages of quicker response, better reliability and more stable arc length.

关 键 词：焊接电源 现场可编程门阵列 控制系统 

分 类 号：TG434.5[金属学及工艺—焊接]