While much effort has been expended recently in automatic control of processes for robotic welding of space structures, the positioning of the weld wire remains dependent on a human operator. Because misalignment of the weld wire can result in defects that are difficult to detect, the process is subject to the vagaries of all human-controlled operations: inattention, varying experience level among operators, and failure to take timely action. An automated weld wire guide is proposed to position the wire as the arc is established and maintain proper position in spite of varying cast of the wire, height of the surface, departures from seam center, and other changes in situation that now require human intervention.The Phase I effort will determine the functions and requirements for an automated wire guide for robotic welding of the berthing ports of the space station. It will determine the feasibility ofimplementing a guide using available sensors, process and motion control algorithms, and artificial intelligence technology.
Potential Commercial Applications:Applications would be in automated welding equipment for reasons of productivity or quality control.STATUS: Project Proceded to Phase II
