1. Fraunhofer Institute for Production Systems and Design Technology IPK, 10587 Berlin, Germany
2. Institute of Measurement and Automatic Control, Leibniz University Hannover, 30823 Garbsen, Germany
3. Robert Bosch GmbH, 31102 Hildesheim, Germany
4. Institute for Machine Tools and Factory Management, Technical University of Berlin, 10587 Berlin, Germany