Meta-modeling for manufacturing processes

  • Authors:

  • Thomas Auerbach;Marion Beckers;Guido Buchholz;Urs Eppelt;Yves-Simon Gloy;Peter Fritz;Toufik Al Khawli;Stephan Kratz;Juliane Lose;Thomas Molitor;Axel Reßmann;Ulrich Thombansen;Dražen Veselovac;Konrad Willms;Thomas Gries;Walter Michaeli;Christian Hopmann;Uwe Reisgen;Robert Schmitt;Fritz Klocke

  • Affiliations:

  • Chair of Manufacturing Technology (WZL-TF), RWTH Aachen University, Germany;Welding and Joining Institute (ISF), RWTH Aachen University, Germany;Welding and Joining Institute (ISF), RWTH Aachen University, Germany;Department Nonlinear Dynamics of Laser Processing (NLD), RWTH Aachen University, Germany;Institut für Textiltechnik (ITA), RWTH Aachen University, Germany;Chair of Metrology and Quality Management (WZL-MQ), RWTH Aachen University, Germany;Department Nonlinear Dynamics of Laser Processing (NLD), RWTH Aachen University, Germany;Chair of Manufacturing Technology (WZL-TF), RWTH Aachen University, Germany;Chair of Metrology and Quality Management (WZL-MQ), RWTH Aachen University, Germany;Fraunhofer Institute for Laser Technology (ILT), Germany;Institute of Plastics Processing (IKV), RWTH Aachen University, Germany;Chair of Laser Technology (LLT), RWTH Aachen University, Germany;Chair of Manufacturing Technology (WZL-TF), RWTH Aachen University, Germany;Welding and Joining Institute (ISF), RWTH Aachen University, Germany;Institut für Textiltechnik (ITA), RWTH Aachen University, Germany;Institute of Plastics Processing (IKV), RWTH Aachen University, Germany;Institute of Plastics Processing (IKV), RWTH Aachen University, Germany;Welding and Joining Institute (ISF), RWTH Aachen University, Germany;Chair of Metrology and Quality Management (WZL-MQ), RWTH Aachen University, Germany;Chair of Manufacturing Technology (WZL-TF), RWTH Aachen University, Germany

  • Venue:
  • ICIRA'11 Proceedings of the 4th international conference on Intelligent Robotics and Applications - Volume Part II
  • Year:
  • 2011

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Abstract

Meta-modeling for manufacturing processes describes a procedure to create reduced numeric surrogates that describe cause-effect relationships between setting parameters as input and product quality variables as output for manufacturing processes. Within this method, expert knowledge, empiric data and physical process models are transformed such that machine readable, reduced models describe the behavior of the process with sufficient precision. Three phases comprising definition, generation of data and creation of the model are suggested and used iteratively to improve the model until a required model quality is reached. In manufacturing systems, such models allow the generation of starting values for setting parameters based on the manufacturing task and the requested product quality. In-process, such reduced models can be used to determine the operating point and to search for alternative setting parameters in order to optimize the objectives of the manufacturing process, the product quality. This opens up the path to self-optimization of manufacturing processes. The method is explained exemplarily at the gas metal arc welding process.