Shiao, Y.; Bollepelly, M. Effect of Pole Head Profile on Torque Performance of a Disc-Type Multipole Magnetorheological Brake. Appl. Sci.2023, 13, 8327.
Shiao, Y.; Bollepelly, M. Effect of Pole Head Profile on Torque Performance of a Disc-Type Multipole Magnetorheological Brake. Appl. Sci. 2023, 13, 8327.
Shiao, Y.; Bollepelly, M. Effect of Pole Head Profile on Torque Performance of a Disc-Type Multipole Magnetorheological Brake. Appl. Sci.2023, 13, 8327.
Shiao, Y.; Bollepelly, M. Effect of Pole Head Profile on Torque Performance of a Disc-Type Multipole Magnetorheological Brake. Appl. Sci. 2023, 13, 8327.
Abstract
Researchers achieved high torque volume ratios in magnetorheological (MR) fluid braking devices by introducing multiple layers and multiple poles concepts. The number of magnetic poles, pole geometry and placement have a significant effect on these multi-pole MR brake performances. This research work focused on the effect of the pole head geometry in a multi-pole dual-disc MR brake for the enhancement of braking torque. The magnetic field generated by the electromagnetic coil has to penetrate through pole heads and travel orthogonally through the rotor and MR fluid layers to achieve maximum brake torque. This flow depends on the profiles of the magnetic pole head area and corresponding core dimensions. This study considered pentagon, square, hexagon, trapezoid and ellipse pole head profiles in place of the conventional circular pole and the best possible core dimensions were used for each geometry. A three-dimensional electromagnetic analysis of the MR brake is conducted to simulate the brake performance. Results showed that the hexagonal and elliptical pole heads are having better magnetic field area, magnetic intensity distribution and higher magnetic flux lines piercing through the MR fluid perpendicularly than the circular and square pole heads. An increment of 3.88% for braking torque performance is obtained, and the braking torque is significantly enhanced.
Keywords
MR brake, Magnetic flux, Pole head profiles, Comsol, Braking torque
Subject
Engineering, Mechanical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
