1. Department of Industrial Automation Technology, Institute for Machine Tools and Factory Management, Technische Universität Berlin, Pascalstr. 8-9, 10587, Germany
2. Czech Technical University in Prague, Faculty of electrical engineering, Technicka 2, 16627, Czech Republic
3. Department of Robotics and Automation, Fraunhofer Institute for Production Systems and Design Technology IPK, Pascalstr. 8-9, 10587 Berlin, Germany