Rotor device with electromagnetic devices and dynamic air-floating journal bearings

The invention discloses a rotor device with electromagnetic devices and dynamic air-floating journal bearings. The rotor device comprises the dynamic air-floating bearings, the electromagnetic device and a rotor rotating shaft, and the rotor rotating shaft is supported by the multiple dynamic air-floating bearings; and the electromagnetic device is arranged on the outer side of the rotor rotating shaft and can attract the rotor rotating shaft. According to the provided new scheme, a circle of electromagnetic device and a corresponding controller are additionally arranged on the periphery of a rotor. One electromagnetic auxiliary device is arranged at the gravity center of the rotating shaft supported by the two air-floating bearings. When the rotor rotates at a low speed and before the shaft floats, the electromagnetic device can attract the shaft upwards to offset most shaft weight, so that abrasion of the air-floating bearings is reduced or eliminated, and the service life of the air-floating bearings is pr