Quility Monitoring in Robotised Short Circuiting GMA Welding
Blekinge Institute of Technology, Department of Signal Processing1997 (English)Report (Other academic)
This paper addresses the problem of automatic monitoring the weld quality produced by robotised short arc welding. A simple statistical change detection algorithm for the weld quality, recursive Sequential Probability Ratio Test (SPRT), is used. The algorithm may equivalently be viewed as a cumulative sum (CUSUM) - type test. The test statistics is based upon the variance of the amplitude of the weld voltage. The performance of the algorithm is evaluated using experimental data. The results obtained from the algorithm indicate that it is possible to detect changes in the weld quality automatically and on-line.
Place, publisher, year, edition, pages
Blekinge Tekniska Högskola Forskningsrapport, ISSN 1103-1581 ; 3
Quality monitoring, GMA Welding, Detection
IdentifiersURN: urn:nbn:se:bth-00044Local ID: oai:bth.se:forskinfoA80E52B8C8789D21C12568A3002CA9B9OAI: oai:DiVA.org:bth-00044DiVA: diva2:837608