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METHOD AND SYSTEM FOR THE VIBRATION ANALYSIS OF AN ENGINE

  • US 20160103038A1
  • Filed: 05/20/2014
  • Published: 04/14/2016
  • Est. Priority Date: 05/17/2013
  • Status: Active Grant
First Claim
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1. A method for the vibration analysis of an engine, comprising the following steps:

  • spectral acquiring vibration signals relating to the engine in order to form at least one spectrogram that represents an operating state of said engine,selecting at least one zone of interest in said at least one spectrogram,constructing for each zone of interest of a vector of interest that represents said zone of interest by projecting said zone of interest onto an underlying representation space,constructing a set of comparison vectors that is representative of a set of corresponding comparison zones with said zone of interest by projecting each one of said comparison zones onto said representation space, said set of comparison zones belonging to annotated spectrograms recorded in a reference database,calculating a similarity score between said vector of interest and each one of said comparison vectors for determining a subset of comparison vectors that have a similarity score that exceeds a predetermined level,selecting a subset of comparison zones associated to said subset of comparison vectors, said subset of comparison zones having vibration behaviours similar to those of said zone of interest, andrecovering said subset of comparison zones and annotations associated with said subset of comparison zones.

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