Method for detecting resonance in a rotor shaft of a turbine engine
AssigneeSnecma
InventorsValerio Gerez, Julien Christian Pascal Griffaton
Life of this patent
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Abstract
A method for detecting resonance in a rotor shaft of a turbine engine, in which a resonance frequency (Fr) of the rotor shaft belonging to a resonance band is centered on an estimated resonance frequency (Frest), is disclosed. The method including: measuring a parameter (P) for regulating the fuel of the turbine engine is measured to obtain an excitation signal; forming a spectrum of the excitation signal; comparing an amplitude of the excitation signal is compared with a resonance threshold (S) on the resonance band of the spectrum; and emitting a resonance detection alarm if the resonance threshold (S) is exceeded.
Claims3
A method for detecting resonance in a rotor shaft of a turbine engine, a resonance frequency (Fr) of the rotor shaft belonging to a resonance band centered on an estimated resonance frequency (Frest), the method comprising:
- measuring a parameter (P) for regulating fuel of the turbine engine to obtain an excitation signal;
- forming a spectrum of the excitation signal;
- comparing an amplitude of the excitation signal with a resonance threshold (S) on the resonance band of the spectrum;
- and
- emitting a resonance detection alarm if the resonance threshold (S) is exceeded.
A computer-readable, non-transitory storage medium storing a program for detecting resonance in a rotor shaft of a turbine engine, in which a resonance frequency (Fr) of the rotor shaft belonging to a resonance band centered on an estimated resonance frequency (Frest), wherein the program, when executed, cause a computer to perform a method comprising:
- measuring a parameter (P) for regulating fuel of the turbine engine to obtain an excitation signal;
- forming a spectrum of the excitation signal;
- comparing an amplitude of the excitation signal with a resonance threshold (S) on the resonance band of the spectrum;
- and
- emitting a resonance detection alarm if the resonance threshold (S) is exceeded.
Dependencies are inferred from the claim text.