Abstract
Magneto-rheological (MR) brake is one of the most promising smart systems, which transmit torque with the applied magnetic field. This process is reversible in the absence of magnetic field. In this paper, the most common disk type MR-Brake (MRB) design is selected to optimize for the desired range of torque transmission without changing the diameter of the MRB. The theoretical torque transmission equation is deduced and using that power index dependency is studied for each structural MRB parameter. Three structural parameters (outer radius of the disk, fluid gap, and coil width) are selected, for three levels and analysis has performed using Minitab software to understand percentage contribution of the structural parameters. Then by varying fluid gap and fixing the other two MRB parameters, FEMM analysis has performed to understand magnetic flux concentration at the fluid gap. After confirming the MRB design, MRB is developed having two different MR-fluid working gaps. Later, maximum torque transmission of the MRB having different MR-fluid working gaps are studied at applied current value. The experimental data confirms with theoretical calculation.
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