题目：Magnetorheological fluids: from fundamentals towards automotive application
报告人：Jürgen Maas 教授
工作单位：Technical University of Berlin（柏林工业大学）
Prof. Dr.-Ing. Jürgen Maas, born 1965 in Nieheim, German received the Dipl.-Ing. and Ph.D. degrees in electrical engineering from the University of Paderborn, Paderborn, Germany, in 1993 and 1998, respectively. After being a Research Assistant with the University of Paderborn, he was a Team Manager of the Mechatronics Motion Control Group at DaimlerChrysler Research, Frankfurt, Germany, from 1998 to 2004. In 2004, he became a Professor in control engineering and mechatronics, and the Chair of the Corresponding Research Lab at the Ostwestfalen-Lippe University of Applied Sciences, Lemgo, Germany. Since 2016, he has been a Full Professor in electromechanical system design and the Chair of the Mechatronic Systems Laboratory, Technical University of Berlin, Berlin, Germany. He authored/co-authored more than 150 publications. He was awarded for his doctorate with honors (summa cum laude) and received for his research the research award of DaimlerChrysler Research and Technology and the research award of the Ostwestfalen-Lippe University of Applied Sciences in 2002 and 2011, respectively. He is a member of several scientific and technical committees. His main research interests include modeling, design, and control of mechatronics systems, especially electromechanical transducers based on smart materials for vehicle, industrial and medical-technical applications.
After introducing fundamentals about magnetorheological fluids (MR fluids) and the utilized shear mode for rotary MR actuators, within this presentation a model-based design of a full-sized coupling element based on MR fluids for a dedicated hybrid electrical transmission (multi-mode transmission) is presented. Certain novel features like a MRF-based sealing in combination with a MR fluid movement control and serpentine flux guidance will be considered for the design by a simulation-based approach. By proving the realized design experimental investigations of the coupling element show a fast torque response and an almost complete elimination of viscous and sealing-friction induced drag torques extending the range of hybrid electrical vehicles.