The working principle of the electromagnetic brake is to use the electromagnetic force of the electromagnet to compress the moving part of the brake disc and the machine bearing, so as to achieve the purpose of braking. When the electromagnet is energized, an induced electric field is generated in the conductor coil. The charge in the conductor coil moves, and the movement of the charge generates a magnetic field. The intensity of the magnetic field is proportional to the current in the wire. As the current gradually increases, the magnetic field of the electromagnet also increases, the magnetic force and the brake disc act to produce a braking effect.

During the braking process, the brake disc and the moving part connected to the brake cartilage are kept in close contact by friction. Therefore, when the electromagnet is not energized, the brake disc can stop moving. On the contrary, when the electromagnet is energized, It will generate braking friction, which makes the brake disc not only stop rotating, but also decelerate or maintain a certain movement speed. Therefore, the electromagnetic brake has strong controllability and stability.