4.5 Article

A low-power magnetorheological fluid clutch utilizing electropermanent magnet arrays

Journal

FRONTIERS IN MATERIALS
Volume 9, Issue -, Pages -

Publisher

FRONTIERS MEDIA SA
DOI: 10.3389/fmats.2022.1039004

Keywords

magnetorheological fluid; electropermanent magnet; magnet; electromagnet; clutch; low-power

Funding

  1. National Science Foundation Graduate Research Fellowship
  2. [1840998]

Ask authors/readers for more resources

In this study, a compact, low-power magnetorheological fluid clutch is developed, which can variably and reversibly alter the shear stress of the fluid by activating an array of electropermanent magnets. By selectively polarizing the magnets, the clutch achieves rapid response times and variable torque transmission, offering a low-power alternative to traditional clutch designs.
In this work, we develop a compact, low-power and partially 3D-printed magnetorheological fluid clutch that operates by variably and reversibly altering the shear stress of the fluid through the local activation of an array of electropermanent magnets (EPMs). By toggling the magnetization of each EPM independently on the order of a few milliseconds, we allow for rapid response times and variable torque transmission without further power input. Selectively polarizing the EPMs for different lengths of time results in repeatable and variable magnetic flux, in turn enabling further control precision. We present the design, modeling, and measured performance of this clutch with various control strategies, and demonstrate its utility as a low-power alternative to more traditional clutch designs.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.5
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available