FIELD: engines and pumps.
SUBSTANCE: in compliance with this invention, during blades aeroelastic vibrations, signal coming from radial clearance pickup is registered to be converted into frequency spectrum. Frequency and magnitudes of two spectral components symmetrically spaced from blade repetition frequency and spectral component located at the same distance from origin of coordinates are compared. Comparison results are used to judge upon availability and type of vibrations, while amplitude difference allows judging upon variation in turbomachine impeller variation amplitude.
EFFECT: higher quality of diagnostics.
4 dwg
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