脉冲MAG焊弧长稳定性模糊控制的研究  

Research on the stability of arc-length in pulse MAG welding by fuzzy logic control

作　　者：孙德一[1] 黄石生[1] 何宽芳[1] 蒋晓明[1] 

机构地区：[1]华南理工大学机械工程学院,广东广州510640

出　　处：《电焊机》2008年第8期51-54,共4页Electric Welding Machine

摘　　要：针对脉冲MAG焊焊接时的电弧稳定性控制,采用峰值电压反馈方式,基于PFM调节机理实现脉冲波形的调制,研究了以基值时间Tb为控制量、峰值电弧电压Uf为被控制量,以查表方式实现的模糊控制器。最后通过试验验证,在焊接过程中弧长变化时所设计的模糊控制器可保持电弧的稳定,从而保证焊接过程的稳定。According to the feature of arc control by using pulsed metal active gas（MAG） welding, a fuzzy logic controller （FLC） is designed to realize the stability of arc control by means of feedback of peak arc, voltage,basing on pulse frequency modulation（PFM） adjustment mechanism to realize the pulsed waveform modulation, the peak arc voltage is controlled by the pulse base time, the FLC is realized in a Look-Up-Table （LUT） method.At last,the experiment result shows that the proposed controller enables the stability of arc and welding process to be achieved in pulsed MAG welding process.

关 键 词：脉冲MAG焊 弧长稳定性 模糊控制 

分 类 号：TG444.7[金属学及工艺—焊接]