par Kajdan, RUDY 
;Catoire, Laurent ;Kinnaert, Michel
Référence IFAC Workshop on Automation in the Mining, Mineral and Metal Industries(September 10-12, 2012: Nagaragawa Convention Center, Gifu, Japan), Preprints of the IFAC Workshop on Automation in the Mining, Mineral and Metal Industries, IFAC, page (140-145)
Publication Publié, 2012
;Catoire, Laurent ;Kinnaert, Michel Référence IFAC Workshop on Automation in the Mining, Mineral and Metal Industries(September 10-12, 2012: Nagaragawa Convention Center, Gifu, Japan), Preprints of the IFAC Workshop on Automation in the Mining, Mineral and Metal Industries, IFAC, page (140-145)
Publication Publié, 2012
Publication dans des actes
| Résumé : | In some steel production lines the strips coming from the successive coils are welded in order to obtain an infinite strip. In such industrial plants, welding is a critical task, because of the costs induced by a weld breakage on the line. Currently, the weld quality is estimated by the operator, by visualising it and making a hammer test. This paper proposes an automatic method for improving the diagnosis of seam weld. The proposed methodology is divided into two parts. The first one consists in assessing the weld by means of indicators computed from the evolution of the process variables. These indicators are then compared to thresholds which are systematically determined thanks to a database corresponding to thousands of welds. The second part deals with the detection of weld opening and centring problems by means of indicators obtained from the position measurements and the strip widths. |
