高频逆变螺柱焊机系统设计与实现  

Design and Implementation of Stud Welding Machine System with High-frequency Inverter

作　　者：彭伟[1] 王景川[1] 黄永志 李国波[3] 赵洪丹[3] 

机构地区：[1]上海交通大学电子信息与电气工程学院 [2]上海悦合自动化技术有限公司 [3]吉林省电力有限公司辽源供电公司

出　　处：《化工自动化及仪表》2017年第5期462-465,共4页Control and Instruments in Chemical Industry

基　　金：上海市科委创新行动计划项目(16111104802)

摘　　要：针对传统PID控制的逆变螺柱焊机在负载电流突变时动态特性差、调节时间长的问题,设计了一种高频逆变螺柱焊机,采用DSP作为主控芯片,IGBT全桥拓扑实现高频逆变,高频变压器实现电气隔离和能量传输,并基于电容充电平衡原理,提出了改进的时间最优控制算法,实现了对焊机电压、电流的快速控制,保证了焊机的动态特性和焊接效果。仿真和实验结果表明:所设计的高频逆变螺柱焊机工作性能稳定,焊接效果良好。Considering PID-controlled inverter stud welding machine＂ s poor dynamic property and long set- tling time at the time the machine＇ s load current jumps a stud welding machine with a high-frequency inverter was designed, which adopts DSP as the master chip and the full-bridge topology to realize high-frequency in- version and the high-frequency transformer to guarantee electric isolation and energy transmission ; basing on the capacitor charge balance, an improved time-optimal control algorithm was proposed to regulate the welding machine＇ s voltage and current quickly so that the welding machine＇ s dynamic property and welding effect can be ensured. Simulation and experimental results show that, this welding machine designed has stable working performance and fine welding effect.

关 键 词：螺柱焊接 IGBT 全桥电路 电容充电平衡 时间最优控制 

分 类 号：TH865[机械工程—仪器科学与技术]