DESIGN AND FABRICATION OF ELECTROMAGNETIC BRAKING SYSTEM

This paper describes the design, fabrication, working and the advantages and disadvantages of Electromagnetic Braking System. This method is a better substitute for the present conventional braking systems. The concept helps in reducing or eliminating sources of heat generation, friction, noise, and wear of materials. There is no involvement of fluids as used in hydraulic braking systems. Electromagnetic brakes work on the principle of repulsion and attraction between two electromagnet field coils. The repulsion between the field coils opposes the motion of the wheel. This repulsion is initiated within the field coils by a switch or a lever that allows current to be supplied to the coils. Each coil is separately spaced evenly on both the outer and inner array of field coils. The repulsive forces are cumulative as one outer field coil passes the inner field coil, and the forces keep adding up to the deceleration of the wheel in motion. The field coils are constructed in a simple manner as of a basic electromagnet with a soft ferrous core and copper wire wound around the core. The polarity of the coils follows the right-hand thumb rule of electromagnetism. The poles of the field coil that come near to each other are always made sure to be of the same poles, either north-north or south- south, to generate the repulsive forces between the outer and inner field coils.