Intelligent Technologies for Robotic Welding

This paper discusses intelligent technologies for the robotic welding, which contains computer vision sensing, automatic programming for weld path and technical parameters, guiding and tracking seam, intelligent control of welding pool dynamics and quality. Such an welding robotic systems with some artificial intelligent functions could realize collision-free path planning for complex curve seam, detecting welding surroundings by laser scanning technology, identifying the start of weld seam and guiding weld torch, tracking the seam, complete real-time control of pulsed GTAW pool dynamical process by computer vision sensing and intelligent technology. The above intelligent separated units or subsystems were integrated into an intelligentized welding flexible manufacturing cell (IWFMC). Based on discrete event control theory and Petri net modeling method, the related domination strategies for the systems was designed to supervise the IWFMC.