In order to maintain its good motion characteristics should be amplified. AC amplifier used up much of the economy, because it depends only on the solenoid load loss. Then increase amplifier loss proportional to the load. 1 in the air; 2 in a vacuum state; 3 only hysteresis loss application Here is a typical example of the magnetic bearing.

Solenoids generate force and damping vibration of the rotor can be controlled by a solenoid. There are eight magnet poles can be generated independently of each other a force in two mutually perpendicular directions. First solenoid used to generate power for identification, followed by a damper or bearing to use. Rotor length 2.3m, diameter 0.1m, with two oiled bearings. These bearings play a role in the movement of the coupling shaft. Shaft with quality 93kg disc.

First, a force is applied to the solenoid of the rotor, which causes the vibration of the shaft is measured as a signal, the signal goes through the calculation of the control, and then use the same solenoid applying this force to the rotor in order to compensate for the unbalance , it is synchronized with the rotor speed. Algorithm determines the rotor vibration control of the size of the smallest. We can not predict or understand the imbalance in the distribution of dynamic bearing coefficients. Arc model solenoid automatic adjustment is of special significance at work, because the movement characteristic generally oiled bearings of the rotor can not be satisfied with theoretical model predictions. This indicates a new direction for adaptive control of magnetic bearing development.