Welding wire velocity modelling and control using an optical sensor

Kirsten M. Nielsen, Tom S. Pedersen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

In this paper a method for controlling the velocity of a welding wire at the tip of the handle is described. The method is an alternative to the traditional welding apparatus control system where the wire velocity is controlled internal in the welding machine implying a poor disturbance reduction. To obtain the tip velocity a dynamic model of the wire/liner system is developed and verified.  In the wire/liner system it turned out that backlash and reflections are influential factors. An idea for handling the backlash has been suggested. In addition an optical sensor for measuring the wire velocity at the tip has been constructed. The optical sensor may be used but some problems due to focusing cause noise in the control loop demanding a more precise mechanical wire feed system or an optical sensor with better focusing characteristics.
Original languageEnglish
Title of host publicationISCA ( International Society for Computers and Their Applications)
PublisherDenmark.
Publication date2007
ISBN (Print)978-1-880843-65-9
Publication statusPublished - 2007
EventInternational Conference on Computer Applications in Industry and Engineering (CAINE 2007) - San Francisco, United States
Duration: 7 Nov 20079 Nov 2007

Conference

ConferenceInternational Conference on Computer Applications in Industry and Engineering (CAINE 2007)
CountryUnited States
CitySan Francisco
Period07/11/200709/11/2007

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