单电源双丝旁路耦合电弧熔化极气体保护焊智能控制研究

doi:10.3901/JME.2019.17.035

机械工程学报 ›› 2019, Vol. 55 ›› Issue (17): 35-40.doi: 10.3901/JME.2019.17.035

• 特邀专栏：焊接机器人 • 上一篇下一篇

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单电源双丝旁路耦合电弧熔化极气体保护焊智能控制研究

朱明, 颜步云, 石玗, 樊丁, 张刚

兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室兰州 730050

收稿日期:2018-09-25 修回日期:2019-03-07 出版日期:2019-09-05 发布日期:2020-01-07
作者简介:朱明,男,1984年出生,博士,副研究员。主要从事先进焊接方法及自动化方面的科研与教学工作。E-mail:zhumings@yeah.net
基金资助:
国家自然科学基金（51805234）、甘肃省高校协同创新团队（2017C-07）和兰州理工大学红柳优秀青年扶持计划资助项目。

Intelligent Control of Consumable DE-GMAW by Single Power Supply

ZHU Ming, YAN Buyun, SHI Yu, FAN Ding, ZHANG Gang

State Key Laboratory of Advanced Processing and Reuse of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050

Received:2018-09-25 Revised:2019-03-07 Online:2019-09-05 Published:2020-01-07

摘要/Abstract

摘要： 提出单电源双丝旁路耦合电弧熔化极气体保护焊方法，采用特定的连接方法独立控制通过焊丝与基材的电流；引用逆向求解算法；搭建用来描述焊接过程中参数变化的数学模型。由于熔化母材的焊接电流易在主路电流和其他焊接条件变化时产生波动，提出利用改变旁路送丝速度调节旁路焊丝的熔化电流，实现控制母材电流的控制方案并进行仿真与试验。试验结果表明：单焊接电源的双丝旁路耦合电弧熔化极气体保护焊能够同时兼顾高熔敷率与基材低热输入的焊接；搭建的数学模型能够描述不同焊接参数的变化；利用提出的智能控制方案及算法，有效地解决了母材焊接电流易波动的问题，达到了焊接过程稳定性的控制，同时得到了成形良好的焊缝。

关键词: 智能控制, 旁路耦合, 单电源, 熔化极气体保护焊

Abstract: In order to simplify the equipment, a new type of consumable double-electrode gas metal arc welding (double-electrode gas metal arc welding, DE-GMAW) with single power supply is proposed. The welding current and the base metal current are controlled by a specific connection method independently. A new solving algorithm is put forward and a mathematical model describing the welding process is established. Aiming to the base metal current will be affected by the main current fluctuation or other conditions and cause weld defects, a closed-loop control scheme to adjust the bypass wire feeding speed is put forward. Fuzzy self-adaptive PID is used to simulate the experiment. Based on the simulation results, the intelligent control experiment is carried out based on the built xPC rapid prototyping platform. The experimental results show that high melting efficiency and low heat-input are acquired; arc voltage and welding current could image and directly describe by mathematical model; the base metal current can be controlled stably and a good weld performance is obtained.

Key words: intelligent control, bypass, single power supply, GMAW

中图分类号:

TG409

朱明, 颜步云, 石玗, 樊丁, 张刚. 单电源双丝旁路耦合电弧熔化极气体保护焊智能控制研究[J]. 机械工程学报, 2019, 55(17): 35-40.

ZHU Ming, YAN Buyun, SHI Yu, FAN Ding, ZHANG Gang. Intelligent Control of Consumable DE-GMAW by Single Power Supply[J]. Journal of Mechanical Engineering, 2019, 55(17): 35-40.

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单电源双丝旁路耦合电弧熔化极气体保护焊智能控制研究

Intelligent Control of Consumable DE-GMAW by Single Power Supply

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