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Development of a compact double-disk magneto-rheological fluid brake

Published online by Cambridge University Press:  12 February 2007

Wei Zhou ,
Chee-Meng Chew  and
Geok-Soon Hong
Wei Zhou
Affiliation:
Department of Mechanical Engineering, National University of Singapore, 9, Engineering Drive 1, Singapore 117576, Singapore
Chee-Meng Chew*
Affiliation:
Department of Mechanical Engineering, National University of Singapore, 9, Engineering Drive 1, Singapore 117576, Singapore
Geok-Soon Hong
Affiliation:
Department of Mechanical Engineering, National University of Singapore, 9, Engineering Drive 1, Singapore 117576, Singapore
*
*Corresponding author. E-mail: chewcm@alum.mit.edu
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Summary

This paper describes the development of a novel compact magneto-rheological (MR) fluid brake with high transmitted torque and a simple structure. The MR fluid brake has two shearing disks with an electromagnetic coil located between them. Such a structure enables the brake to have a small radial dimension and a large torque transmission capacity. In the design process, a Bingham viscoplastic model is used to predict the transmitted torque. Electromagnetic finite element analysis (FEA) is performed to assist the magnetic circuit design and structural parameters' optimization. The novel brake design is prototyped and studied. Experimental results show that a compact MR fluid brake with high transmitted torque is successfully achieved.

Keywords

Magneto-rheological (MR) fluid brakeHigh transmitted torqueCompact sizeBingham viscoplastic modelFinite element analysis (FEA)
Type
Article
Information
Robotica , Volume 25 , Issue 4 , July 2007 , pp. 493 - 500
Copyright
Copyright © Cambridge University Press 2007

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