Magnetic levitation protective bearings are non-contact and frictionless bearings that use electromagnetic fields to support rotating components and avoid contact with fixed components. Its main working principle is as follows:
Firstly, magnetic levitation protective bearings typically consist of two parts: permanent magnets and electronic control components. A permanent magnet is usually a circular electromagnet that generates a stable magnetic field near the solid journal. The electronic control component mainly consists of a control system and sensors, used to detect the position and status of the rotor, control the strength and direction of the magnetic field.
When the rotor rotates, it is subjected to centrifugal force, and the bearing is prone to deformation and wear. However, in magnetic levitation protection bearings, due to the effect of electromagnetic fields, the rotor is always in a fixed position, reducing contact with fixed components. When the rotor is subjected to external shocks or unstable forces, the control system can adjust the strength and direction of the electromagnetic field in real-time to maintain the smooth operation of the rotor.
In addition, magnetic levitation protection bearings can also achieve vibration control and noise reduction by changing parameters such as the frequency and amplitude of the electromagnetic field. Therefore, magnetic levitation protective bearings are widely used in the field of bearings under special operating conditions such as high-speed, high-precision, high-temperature, and high-pressure.
