Electromagnetic Brakes: Past Innovations, Present Functions
Electromagnetic brakes come in various forms (tooth, multiple disc, hysteresis, magnetic particle). The variant with a single-face design is the most popular. While mechanically transmitting torque, electromagnetic brakes function electrically. They were once known as electromechanical clutches and brakes for this reason. The range of applications and brake designs has expanded significantly since electromagnetic brakes gained popularity over seventy years ago, but the fundamental workings of the single-face electromagnetic brake have not changed. Consider the coil shell as a north and south-pole horseshoe magnet. A magnetic circuit is formed if a piece of iron makes contact with both poles. An electric field is produced when power is provided, and this field (flux) bridges the gap between the armature and the field. The armature is drawn into contact with the brake field face by this magnetic attraction. The circular motion comes to an end due to friction and the intensity of the mag