Design, Fabrication, and Experimental Evaluation of a Mechanically Actuated Electromagnetic Braking System
DOI:
https://doi.org/10.70112/ajeat-2026.15.2.4385Keywords:
Electromagnetic Braking, Eddy-current Braking, Magnet-to-disc Air Gap, Braking Performance, Rotational SpeedAbstract
With the purpose of developing and testing a mechanical actuated EMBS of a permanent magnet and a rotating aluminum disc, this paper presents the development and experimental evaluation of the actuated permanent magnet section yawed configuration. This paper presents the development and experimental evaluation of the yawed configuration permanent magnet section actuated braking system (EMBS) with a rotating aluminum disc. Both the initial rotational speed of the diskperformer and magnet-to-disc air gap were studied to identify their effect on braking performance at 200 to 600 RPM, and 30 to 5 mm, respectively. The fastest braking was found at the optimal air gap of 5 mm at 200 RPM, which changed to 2.7 s at 600 RPM, and for bigger air gaps very little braking was achieved. In the braking response the rate of decrease was approximately exponential, with the initial speed giving rise to a larger initial deceleration. The ten repeated braking cycles showed an increase in disc temperature from 31.0 °C to 51.7 °C but the braking time increased only from 2.70 to 3.02 s, that is, relatively stable repeated braking performance. Overall, the results show that the designed EMBS can brake effectively and has low wear, especially at small gap between the magnet and the disc as well as at higher rotation speed.
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