Patent ID: 11970952
Assignee: GENERAL ELECTRIC COMPANY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  G | IPC F  G

Claim 9:
10. A turbo machine, the turbo machine comprising:
a rotor assembly comprising a magnetic material;
a magnetic actuator positioned in magnetic communication with the magnetic material of the rotor assembly, wherein the magnetic actuator is configured to selectively output an electromagnetic force at the rotor assembly, and further wherein the magnetic actuator is configured to obtain a vibration signal at the rotor assembly; and
a controller configured to store and execute instructions, the instructions configured for:
outputting a first output signal to apply, via the magnetic actuator, a first electromagnetic force to cause a vibratory response of the rotor assembly;
obtaining, via the magnetic actuator, a first vibrations signal representing the vibratory response of the rotor assembly;
determining a first non-synchronous vibrations signal corresponding to the rotor assembly based at least on the first vibrations signal and a rotor speed of the rotor assembly;
determining a first cross coupled stiffness corresponding to the rotor assembly based at least on the first non-synchronous vibrations signal and the first electromagnetic force;
determining a second electromagnetic force to be applied by the magnetic actuator to the rotor assembly based at least on the first cross coupled stiffness and a proportional compensation factor corresponding to a gap between the magnetic actuator and a magnetic material of the rotor assembly; and
generating a second output signal corresponding to the determined second electromagnetic force.