Fast Response MR-Fluid Actuator
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In this paper, the authors investigated the dynamics of the MR-fluid actuator and aim to improve the response of the actuator by considering the transient magnetic analysis in consideration of the eddy current.Abstract:
Magnetorheological (MR) fluids are materials that change their rheological behavior upon applying a magnetic field. They have been promising as functional fluids that can improve the properties of mechanical systems. We have developed an actuator using MR fluid. In the previous paper, a method of designing MR-fluid actuators was proposed on the basis of magnetic circuit theory. The basic experiments were carried out and static properties that agreed well with the design were obtained. However, the transient response, which was not considered in the design phase, was not very fast. In this study, we investigate the dynamics of the MR-fluid actuator and aim to improve the response. The transient magnetic analysis is examined in consideration of the eddy current. Two approaches to improving the response are proposed. Finally, we realize a much faster MR-fluid actuator.read more
Citations
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References
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MR fluid, foam and elastomer devices
J. David Carlson,Mark R. Jolly +1 more
TL;DR: Magnetorheological (MR) fluids, foams and elastomers comprise a class of smart materials whose rheological properties may be controlled by the application of an external magnetic field.
Journal ArticleDOI
The Magnetic Fluid Clutch
TL;DR: A new type of magnetic fluid and several classes of new devices utilizing this fluid have been developed at the National Bureau of Standards as discussed by the authors, and one application of this fluid has been in electromagnetic clutches, but the electro-magnetically controlled mixture offers promise for other uses also.
Journal ArticleDOI
Properties and applications of commercial magnetorheological fluids
TL;DR: In this article, the rheological and magnetic properties of several commercial magnetorheological (MR) fluids are discussed and compared using appropriate figures of merit based on conventional design paradigms.
Journal ArticleDOI
Commercial magneto-rheological fluid devices
TL;DR: Controllable magnetorheological (MR) fluid devices have reached the stage where they are in commercial production as discussed by the authors, and such devices are finding application in a variety of real world situations ranging...
Proceedings ArticleDOI
Properties and applications of commercial magnetorheological fluids
TL;DR: In this paper, the rheological and magnetic properties of several commercial magnetorheological (MR) fluids are discussed and compared using appropriate figures of merit based on conventional design paradigms.