This paper applies DSP and fuzzy control technique to constant current control system of TIG power supply.It introduces the design of offline fuzzy control system by Fuzzy Logic box in MATLAB and constructs closed loop control system of TIG power supply by DSP and CCS,which has high speed and abundant external device on chip and so on.The simulation of the system indicates that the fuzzy control system is robust,which satisfies the demands of TIG power supply's accuracy.
【基金】
甘肃省自然科学基金资助项目(ZS032-B25-001)
【更新日期】
2007-03-30
【分类号】
TG434.1
【正文快照】
钨极氩弧焊(Tungsten Inert Gas Welding,简称TIG焊)是焊接有色金属及其合金,如铝、镁及其合金、不锈钢等的理想方法,具有电弧稳定、焊缝成形美观等优点。但是在现场施焊过程中,由于工况不同,电弧受到各种因素的干扰,如:电弧长度的变化,工件的不平度,保护气体的纯度、流量和供?