Magnetic Powder Brakes Are Often Used In Automatic Tension Control Systems

The output torque of the magnetic powder brake has a good linear relationship with the excitation current, and has nothing to do with the speed or slip, and has the advantages of fast response speed and simple structure. Magnetic powder brakes are often used in automatic tension control systems and are widely used in printing, packaging, paper and paper processing, textile, fiberglass, wire and cable rubber and leather, metal foil tape processing and other equipment.

         Since the magnetic powder brake and the magnetic powder clutch have a linear relationship with the exciting current, the output torque can be easily controlled by changing the magnitude of the exciting current. In general, the excitation current is proportional to its output torque over a range of 5% to 100% of rated torque. Stable slip torque When the excitation current remains constant, the output torque is not affected by the differential speed (slip speed) between the transmission and the follower, that is, there is no difference between the static torque and the dynamic torque. Therefore, the magnetic powder clutch and the magnetic powder brake can output a constant torque very stably. If this feature is applied to tension control, the customer only needs to adjust the magnitude of the excitation current to achieve the purpose of controlling the tension of the coil in a simple, effective and accurate manner. Small control power and fast response speed Although the excitation current of the magnetic powder clutch and the magnetic powder brake is small, it can output a large torque, which makes it easy to form an automatic control system. In addition, when the excitation current changes, the corresponding magnetic field strength also responds synchronously, and the magnetic powder clutch and the magnetic powder brake also have an amazing response speed.发送反馈