Abstract: A mobile welding system has a mobile base for traversing a surface, proximate to a region to be welded. The mobile welding system has a lift, coupled to the mobile base and to a platform for moving the platform vertically proximate to the region. The lift is disposed between the platform and the mobile base. The mobile welding system has a robotic arm coupled to the platform. The mobile welding system has a welding torch, disposed on a first end of the robotic arm, for welding the region. The mobile welding system has a controller configured to cause the welding torch to move proximate to the region by causing at least one of the mobile base, the lift, and the robotic arm to move in at least one direction.

Abstract: A computer obtains a first image including a first portion of a first edge and a first portion of a second edge, wherein distance between the first portion of the first edge and the first portion of the second edge forms a first width of a seam between the first edge and the second edge. The computer obtains a second image including a second portion of the first edge and a second portion of the second edge, wherein distance between the second portion of the first edge and the second portion of the second edge forms a second width of the seam between the first edge and the second edge. The computer determines a parameter for a welding torch to weld a joint for joining the first edge and the second edge along the seam based at least in part on the first image and the second image.

Abstract: An arc welding system for welding materials of different electric conductivity has a robotic arm and a welding torch with a nozzle, disposed on a first end of the robotic arm, for applying an amperage to a wire supply at the nozzle. The arc welding system has a controller for controlling direction and speed of movement of the robotic arm and for controlling the amperage applied by the welding torch.