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

Claim 16:
17. A method for controlling a rotor assembly of a turbo machine, the method comprising:
outputting a first electromagnetic force to cause a vibratory response of the rotor assembly via a magnetic actuator;
obtaining a first vibration signal representing the vibratory response of the rotor assembly;
obtaining a rotor speed signal of the rotor assembly, wherein the rotor speed signal corresponds to a frequency speed of the rotor assembly;
determining a first non-synchronous vibration signal corresponding to the rotor assembly based at least on the first vibration signal and the rotor speed signal of the rotor assembly;
determining a first cross coupled stiffness corresponding to the rotor assembly based at least on the first non-synchronous vibration 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 and applying the second electromagnetic force to the rotor assembly.