In the short circuit transfer welding processes, a frequent change of arc length often causes dissatisfactory bead formation, but the control for arc length is nonlinear and complicated as it is difficult to derive a mathematical model of the controller. Thus, conventional controllers such as constant voltage power supply with constant wire feed speed cannot keep the arc length stable. This work presents a fuzzy controller using Mamdani method to stabilize the arc in gas metal arc welding (GMAW), where the deviation of arc voltage and its change rate serve as the input, and the large current at the initial arcing stage is the output. The controller is simple and easy to implement, because it has only one control object (i.e., welding current) in the system. To assess the validity of this method, two experiments on torch height change and upward slope welding were carried out, and the result suggests that the proposed fuzzy controller had a fast dynamic response and good stability under every condition.
The International Journal of Advanced Manufacturing Technology – Springer Journals
Published: Mar 20, 2017
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera