ACTUATOR 2016 Manuscript C4.1

Author: Hubert Borgmann
Pages: 5
Language: English
Publication date: 01/06/2016
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Manuscript C4.1 published in Conference Proceedings ACTUATOR 2016
Controlling the Magnetorheological Effect Using Vibrations

E. Leroy, P.-H. Orefice, L. Eck, M. Hafez
CEA LIST, Gif-Sur-Yvette, France

Magnetorheological fluids (MRF) are interesting for building devices that require high strength without a need for active actuation such as dampers, brakes or clutches. Usually, the use of MRF requires an electromagnetic coil that makes them difficult to apply to compact, miniature devices. In this work, we present a new technology to operate magnetorheological fluids, it is based on the use of mechanical vibrations. Experiments conducted on a cylindrical brake showed that the braking torque can be reduced when vibrations are applied to the shearing element. The effect depends on multiple parameters such as the frequency and the amplitude of the vibration and a drop of the total torque up to 40 % has been observed in a constant magnetic field. The combination of vibrations and permanent magnets could be interesting for building miniature MRF-based device. These could be used in various applications such as haptic interfaces, reconfigurable articulations, etc.
El vendedor asume toda la responsabilidad de esta entrada.
Hubert Borgmann, MESSE BREMEN,
Project Manager ACTUATOR, International Conference and Exhibition on New Actuators and Drive Systems, Bremen, Germany, and Editor of the ACTUATOR Conference Proceedings (
Project Manager ITHEC, International Conference and Exhibition on Thermoplastic Composites, Bremen, Germany, and Editor of the ITHEC Conference Proceedings (

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