Lübbert, U.U.Lübbert2022-03-032022-03-031992https://publica.fraunhofer.de/handle/publica/181871Welding on automatic machines means time-consuming efforts to maintain the welding boundary conditions constant. Apart from the monitoring of the welding parameters, the sensors normally used up to now have only allowed the position of the torch to be controlled, but not the three-dimensional shape of the weld bead and the fusion zone. In the last analysis, therefore, the control of the welding process is not closed loop, but open loop control. Precise adherence to the parameters for weld preparation, torch position, etc. is therefore necessary as before. By evaluating television pictures of the weld pool the three-dimensional raised form of the finished welded joint can, however, be determined step-by-step and controlled on the basis of the target data to be entered, so that the time and labour expended on weld preparation is reduced and the quality improved.deadaptive controladaptive Steuerungarc weldingBildverarbeitungcontrolFernsehkameraimage processingLichtbogenschweißenRegelungSchweißparameterTV camerawelding parameters004671journal article