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Proceedings Paper

Realization of a MRF-safety-clutch for high torsional moments based on a novel ball-clutch design
Author(s): M. Matthias; B. Seipel; M. Jackel; J. Kloepfer
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Paper Abstract

This paper describes the development of a safety-clutch by using magnetorheological fluids (MRF) to switch the transmission torque between a motor and a generator in a bus-like vehicle. The clutch is based on a new design combining an axial MRF-actuator and a ball coupling mechanism. This so called "MRF-ball-clutch" avoids the disadvantages of traditional bell- or disc-MRF-clutch designs where the torque is transmitted by the MRF which leads to a self-heating due to the shearing forces in the fluid and a more or less significant drag torque caused by limitations of the relation between minimal and maximal transmittable torque. The safety clutch based on the new MRF-clutch design requires a minimum of power consumption and allows switching high torsional moments in a very compact, lightweight and robust design. The work was done within the Fraunhofer System Research for Electromobility FSEM, founded by the German Federal Ministry of Research and Technology.

Paper Details

Date Published: 27 March 2012
PDF: 8 pages
Proc. SPIE 8341, Active and Passive Smart Structures and Integrated Systems 2012, 83410P (27 March 2012); doi: 10.1117/12.905875
Show Author Affiliations
M. Matthias, Fraunhofer Institute Structural Durability and System Reliability (Germany)
B. Seipel, Fraunhofer Institute Structural Durability and System Reliability (Germany)
M. Jackel, Fraunhofer Institute Structural Durability and System Reliability (Germany)
J. Kloepfer, Fraunhofer Institute Structural Durability and System Reliability (Germany)


Published in SPIE Proceedings Vol. 8341:
Active and Passive Smart Structures and Integrated Systems 2012
Henry A. Sodano, Editor(s)

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