SYSTEM AND METHOD FOR CONTROLLING A JOURNAL BEARING

Embodiments of the invention are shown in the figures, where a system (50) is shown, the system (50) comprising: a journal bearing (J1-J4) having a carrier (34; 51), a rotor (32; 52) arranged rotatable about a rotational axis (Ra) relative to the carrier (34; 51), and a fluid (53) in a clearance (CI) between the rotor (32; 52) and the carrier (34; 51); at least one sensor (55) to measure a vibration signal of the rotor (32; 52); a control system (56) adapted to determine a pressure set point for the fluid (53) in the clearance (CI) based on the vibration signal, and to provide control signals generated based on the pressure set point; and active means (62) adapted to modify the pressure of the fluid (53) in the clearance (CI) based on the control signals.