Abstract
The paper describes the utilisation of a reflectance type proximity sensor operating in the proximity infrared domain for the purpose of recognizing the discontinuities of the object. The sub-tance is presented of the control algorithm which, in cooperation with the computer control system of the welding robot, allows to set the technological distance of the welding burner from the weld and to guide it along the welding seam. Description is given of the mode of sensing the thermal gradient in theneighbourhood of the weld by which the electric power input into the electrode is regulated. Infrared proximity sensor allows the position adaptivity and infrared thermal sensor allows the partial process adaptivity of the welding.
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