MODELING AND CONTROL OF WELD HEIGHT REINFORCEMENT IN THE GMAW PROCESS

Jorge Andres Giron Cruz¹; Edna Margarita Moncayo Torres¹; Sadek C. Absi Alfaro¹

¹ Universidade de Brasilia

doi:10.20906/CPS/COB-2015-1383

Resumo

In recent research related to technological application in the real-time monitoring and control of the welding, is observed the use of various approaches to improve the productivity and quality through the development of techniques and automatic control systems. This paper presents a methodology for modeling and control of the weld height reinforcement, allowing adjusting the process parameters in real time. Was developed for the geometric characteristic studied an integrated system of images acquisition, modeling and control system. The weld bead formation is measured through an acquisition system and processing of images using a low cost web cam. The wire feed speed, welding speed and voltage are predicted using artificial neural based on the desired weld height reinforcement. The control system is based on fuzzy logic.

Palavras-chave: Gas metal arc welding (GMAW); Digital image processing; Artificial Neural Networks; Fuzzy Logic