Patent ID: 11891919
Assignee: SAFRAN AIRCRAFT ENGINES
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  F  Y | IPC F

Claim 0:
1. A method for controlling a setting angle of vanes or blades of a propeller of a turbomachine, the method comprising generating a setting command, the setting command being a function of a speed of rotation of the propeller and of a rating setpoint,
wherein generating the setting command comprises:
generating, in a nominal controlling line, a nominal setting command as a function of a value of a setting measurement of the vanes or the blades of the propeller, and
generating, in a downgraded controlling line, a downgraded setting command independently of the value of the setting measurement of the vanes or the blades of the propeller,
wherein the method further comprises:
a selection step of selecting the downgraded controlling line so that the setting command is equal to the downgraded setting command, or the nominal controlling line so that the setting command is equal to the nominal setting command,
a supply step of supplying the setting command to an actuator configured to modify the setting angle, and
before the supply step and after the selection step, a command return step so that the setting command is directly sent to at least one of the nominal controlling line and the downgraded controlling line,
wherein the actuator changes the setting angle based on the setting command.