The Common Point And Difference Between Magnetic Powder Brake And Hysteresis Brake

he magnetic powder brake is just an analog load, or a tensioner. The magnetic powder dynamometer is equipped with a force sensor and a speed encoder on the magnetic powder brake, which can test the mechanical performance parameters of the motor, such as torque, speed and output power.

What is the working principle of the magnetic powder brake? For those who have just touched the magnetic powder brake, it may not be very clear about the principle. Here is the one for you.

 Working principle of magnetic powder brake: Under the action of electric current, the working medium which uses magnetic powder will form the magnetic powder chain (the magnetic powder connected to the current will be formed under the action of magnetic lines of force), and the inner and outer rotors are connected to achieve the transmission and control transfer. The purpose of the moment. A complete magnetic powder brake typically includes components such as an excitation coil, a magnetic powder, an inner rotor, and an outer rotor.

The magnetic powder brake is made of high-quality imported magnetic powder and high-precision CNC. It has the advantages of high precision, high-speed response, low noise and heat dissipation, stable performance, no vibration and no impact, and can achieve a smooth continuous drinking drive state, etc., in rubber, textile, Printing, dyeing, wire and cable and other industries have been widely used.
    
Difference between magnetic powder brake and hysteresis brake
The use of the magnetic powder dynamometer is controlled within a certain torque unit and is not suitable for linear adjustment! Hysteresis brakes Due to the non-friction type, the hysteresis rotor is made of metal, and its life depends on the internal bearing! General imported bearings, such as NSK, Meiya, etc. can work continuously for 5~6 years, but because of non-friction technology, to obtain high torque, the contact area of the rotor in the magnetic field must be large enough, so relative to the magnetic powder brake The volume of the hysteresis brake will be slightly larger than the magnetic powder! With a hysteresis dynamometer, your minimum torque can be extremely small due to its non-friction characteristics! Suitable for a wide range of linear torque measurement, adjustment, very fast response, can be measured from 0~ to the maximum rated torque!

A. Non-contact torque transmission: The magnetic powder brake continuously changes through the air gap of the mechanical component's brake or clutch, and then becomes constant to avoid any wear.

B. Continuously adjustable torque: Magnetic powder brake torque or transferable torque depends only on the current, largely independent of speed, and continues to be effective from zero to maximum speed.

C. High-power continuous mode, overloadable: Magnetic powder brake power optimization The brake series can continuously withstand high power. It can withstand overload in a short time. Hysteresis brakes, electromagnetic brakes and brakes are divided into single-axis magnetic hysteresis brakes and double-output magnetic hysteresis brakes. They are available in a wide range of applications and versatility depending on the space and installation. Mainly used in high-speed winding equipment; simulation load of life test of motor, small internal combustion engine, gear box and other rotating devices; precise load of high-end sports equipment. Based on a standard hysteresis brake, an air-cooling device is added to it.

When the magnetic powder brake works for a long time, its temperature will rise sharply, and the air-cooled hysteresis brake can run continuously for a long time under high slip power. The torque is the same at multiple current-specific points, and multi-axis tension control can be achieved using only one control system. Mainly used for multi-roll yarn, glass fiber unwinding device and cable, rope and other processing machinery.

Features:
A. Non-contact torque transmission: The magnetic powder brake continuously changes through the air gap of the mechanical component's brake or clutch, and then becomes constant to avoid any wear.

B. Continuously adjustable torque: Magnetic powder brake torque or transferable torque depends only on the current, largely independent of speed, and continues to be effective from zero to maximum speed.

C. High-power continuous mode, overloadable: Magnetic powder brake power optimization The brake series can continuously withstand high power. It can withstand overload in a short time.

D. High speed, the maximum speed can reach 15000rpm. We offer a hysteresis brake from 0 to 6 N/M. Overview The hysteresis brake is a superior torque and tension control component. It uses the hysteresis principle to generate a certain amount of torque by controlling the input excitation current.

There is a good linear relationship between the magnetic powder brake current and the output torque. It provides smooth, steplessly adjustable, speed independent torque control. In addition to the bearing, there is no other friction in the system, which has the advantages of stable and reliable, low speed, low noise, long service life and low maintenance cost.

Structure
The hysteresis brake consists of two parts, the rotor and the stator pole. The rotor is made of a special hysteresis material with a certain gap in the stator pole and the rotor rotates in the gap. When the coil is energized, a magnetic field is generated in the gap, causing a hysteresis effect on the rotor. When the hysteresis rotor is rotated against the hysteresis force under the action of an external force, the rated torque is generated. Torque is only related to the magnitude of the magnetizing current, independent of the speed, enabling non-contact torque transmission.

Characteristics
The excitation current is basically proportional to the output torque. The magnetic powder brake transmission torque can be controlled within the range of 5-100% of the rated value, and the small current can control the output of a large torque.