本文基于模拟实验介绍一种微机在工频方波焊接电源控制中的应用。利用TP—801单板机作基本部件,同时配置模拟量输入、输出、开关量输入、输出及实时时钟作为和CPU间联系通道和定时延时工具等。设计一套能直接监测焊接电源,显示工作参数,调节焊接电流的实时控制装置。实验表明,用微机控制与用运算放大器控制所得外特性曲线接近。从而说明了本文所介绍的计算机控制方案是安全可行的,并且控制效果达到了预定要求。 This article based on the simulation experiment introduces a microcomputer in the power frequency square wave welding power control application. Use TP-801 single-board machine as the basic components, while configuring analog input, output, digital input, output and real-time clock and CPU as the contact channel and timing delay tools. Design a real-time control device that can directly monitor the welding power, display the working parameters and adjust the welding current. Experiments show that using computer control and op amp control obtained by the proximity of the characteristic curve. This shows that the computer control scheme introduced in this paper is safe and feasible, and the control effect meets the predetermined requirements.