华南理工大学学报(自然科学版) ›› 2003, Vol. 31 ›› Issue (10): 15-19.

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脉冲 MIG 焊电源模糊控制器的研究

吴开源1 李 阳1 黄石生1 陆沛涛1 蒙永民2   

  1. 1.华南理工大学 机械工程学院‚广东 广州510640;2.金山电子(深圳)有限公司‚广东 深圳518008
  • 出版日期:2003-10-20 发布日期:2022-05-26
  • 作者简介:吴开源(1978-)‚男‚博士生‚主要从事电力电子技术、逆变电源及其智能控制的研究.
  • 基金资助:
    国家自然科学基金资助项目(59875020)

Fuzzy Controller of Pulsed MIG Welding Power Source 

Wu Ka-i yuan 1 Li Y ang 1 Huang Sh-i sheng 1 Lu Pe-i tao 1 Meng Y ong-min 2   

  1. 1.College of Mechanical Engineering‚South China Univ.of Tech.‚Guangzhou510640‚China; 2.GP Electronics (Shenzhen) Ltd.‚Shenzhen518008‚China
  • Online:2003-10-20 Published:2022-05-26

摘要: 针对脉冲 MIG 焊电源小直径焊丝焊铝时电弧自身调节作用较弱的缺点‚采取电 弧电压反馈的方式‚选取基值时间 Tb 为控制量‚峰值电弧电压 Uf 为被控制量‚利用 MATLAB 模糊逻辑工具箱分析和设计了各变量的隶属度函数、模糊控制规则和模糊控 制表‚以查表方式实现了模糊控制.试验结果表明‚所设计的模糊控制器有很强的电弧电 压调节能力‚可保证电弧和焊接过程的稳定.

关键词: 脉冲 MIG 焊, 电源, 电弧电压调节, 模糊控制器

Abstract: A fuzzy controller‚which is realized by Look-up Table (LUT) method based on MATLAB Fuzzy Logic Toolbox‚was developed to overcome the disadvantages of weak arc voltage self-adjusting ability in pulsed MIG welding with small diameter aluminum wire.In this controller‚the peak arc voltage‚Uf‚is controlled by the pulse base time‚Tb‚by means of the feedback of arc voltage.The membership functions‚fuzzy linguistic control rules and fuzzy linguistic control table of fuzzy controller were also discussed.The results of the experiment demonstrate that the newly developed fuzzy controller has strong arc voltage adjusting ability to obtain the stabilities of arc voltage and welding process.

Key words: pulsed MIG welding;power source;arc voltage adjustment;fuzzy controller 

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