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Quality Monitoring in Robotised Welding using Sequential Probability Ratio test
Ansvarig organisation
1996 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat) Published
Abstract [en]

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. It is shown that the variance of the weld voltage amplitude decreases when the welding process is not operating under optimal condition. 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

Ort, förlag, år, upplaga, sidor
Perth: IEEE; New York, NY, USA , 1996.
Nyckelord [en]
quality monitoring, recursive sequential probability ratio test, cumulative sum type test, automatic monitoring, weld quality, robotised short arc welding, test statistics, weld voltage amplitude variance, welding process, algorithm performance, experimental data, parameter estimation
Nationell ämneskategori
Signalbehandling
Identifikatorer
URN: urn:nbn:se:bth-9763ISI: A1996BJ42V00118Lokalt ID: oai:bth.se:forskinfo95C8860DE53606EAC12568A3002CAA3AISBN: 0780336798 (tryckt)OAI: oai:DiVA.org:bth-9763DiVA, id: diva2:837697
Konferens
1996 IEEE TENCON Digital Signal Processing Applications Proceedings
Tillgänglig från: 2012-09-18 Skapad: 2000-03-15 Senast uppdaterad: 2015-06-30Bibliografiskt granskad

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Claesson, Ingvar

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