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Trends in Machine design

Design and Development of Electromagnetic Braking System Based on Electromagnetic Induction and Eddy Current

  1. Anku Kumar
  2. Hasibur Rahaman
  3. Niraj Kumar

Abstract

In this paper, electromagnetic braking system has been developed that ensures passenger’s, driver’s and other road user’s safety and comfort. Most of the conventional braking system like mechanical, hydraulic, pneumatic have certain limitations. In mechanical brake, erosion of the mechanical pads is carried out by frictional force and requires periodic replacement of the bearing. Fluid leakage in hydraulic and pneumatic could lead to brake failure and reduces the effectiveness of brake. Therefore, electromagnetic system is used to respond quickly, this braking system has also been more efficient. It works on electricity and does not release toxic chemicals in the surrounding like hydraulic brake hence it is eco-friendly. In investigation, it is found that electromagnetic brake has numerous preferences over other conventional brakes because electromagnetic brakes reduce wear and tear, provide improved heat dissipation, backlash free operation and less maintenance is required. Experimental setup consists of aluminium disc, sprocket, chain, shaft, bearings, motor, electromagnets and switch. Various mathematical calculation is performed to find out unknown parameters of machine elements that have been used in our experimental setup. Unknown parameters like pitch angle, pitch circle diameter, velocity of chain, power transmitted by chain, value of k from stribeck’s equation is calculated. Static analysis is also performed on shaft and sprocket to obtainvarious plot like stress plot, strain plot and displacement plot. Forces of 1.5 N and 5.2 N are acting on the shaft and torque of 0.537 N-m is acting on the driven sprocket. Solidwork 2021 has been used for analysis. When non ferromagnetic metal disc rotates in magnetic field, emf is induced. This induced emf create swirl current also known as eddy current in the disc. This Eddy current develop their own magnetic field in such a way that opposes the magnetic field that created it. As a result of this, slow down the motion of moving object. Now a days this type of advance braking system is already used in High-speed train, roller coaster etc.

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