Patent ID: 11965685
Assignee: GD MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD. FOSHAN (CN)
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F  H

Claim 4:
5. The magnetic bearing compressor of claim 4, wherein the control device is further configured to:
alternately send a third electric signal and a fourth electric signal to the first magnetic bearing within a second preset duration;
control, by the third electric signal, the first magnetic bearing to attract the rotor in a second direction where the first sensor is located until the rotor is in contact with the first magnetic bearing;
control, by the fourth electric signal, the first magnetic bearing to attract the rotor in a direction opposite to the second direction until the rotor is in contact with the first magnetic bearing;
determine a first maximum distance value and a first minimum distance value between the rotor and the first sensor within the second preset duration;
obtain a first absolute value of a difference of the first maximum distance value and the first minimum distance value; and
determine a first protective air gap value of the first magnetic bearing according to the first absolute value.