Title :
Robust fault detection in a welding process using parametric estimation
Author :
Brie, D. ; Sauter, D. ; Cecchin, T.
Author_Institution :
Centre de Recherche en Autom. de Nancy, Vandoeuvre, France
Abstract :
This paper deals with the application of adaptive parameter estimation and change detection tools for the detection of faults in the welding of steel sheets. Considering the non-stationary primary current signal, two kinds of fault have to be detected: abrupt changes and changes in the degree of non-stationarity. For this last problem, a method which uses a minimax approach is proposed
Keywords :
Circuit faults; Fault detection; Grounding; Low voltage; Minimax techniques; Parameter estimation; Robustness; Steel; Temperature; Welding;
Conference_Titel :
Systems, Man and Cybernetics, 1993. 'Systems Engineering in the Service of Humans', Conference Proceedings., International Conference on
Conference_Location :
Le Touquet
Print_ISBN :
0-7803-0911-1
DOI :
10.1109/ICSMC.1993.385046
