针对不同焊接方式的不同控制方法,设计了基于先进精简指令集处理器（ARM）控制的多功能数字化逆变电源.利用基于ARM和复杂可编程逻辑器件的人机交互系统,通过软件设计,在一台电源上实现了CO2气体保护焊、脉冲熔化极气体保护焊、手工焊条焊等多种焊接方式的转换与选择.采用小波分析仪采集焊接过程的电流电压信号,考察了多功能数字化逆变电源的工艺性能,结果表明所设计的电源可满足各种焊接工艺要求,实现了数字化逆变电源的多功能化,提高了数字化逆变电源的实用性.

In order to realize various controls of different welding methods,a multifunctional digital inverter power supply is designed based on a central controller of Advanced RISC Machines（ARM）.Then,a digital human-computer interaction system based on ARM and Complex Programmable Logic Device（CPLD） is designed,which,combined with software design,implements the conversion and selection of such welding methods as CO2 gas metal arc welding,pulse MIG welding and manual metal arc welding.Finally,the processing properties of the designed multifunctional power supply are investigated according to the current and voltage signals acquired by a wavelet analyzer.The results indicate that the designed power supply with high practicability meets the requirements of diffe-rent welding processes and implements the multifunctionality of digital inverter power supply.