| 摘要 |
<p>Systems and methods for identifying the presence of a defect in vibrating machinery (120). An exemplary method (200) comprises analysis of frequency spectrum vibration data of the machine (120). The method (200) comprises deriving a harmonic activity index (225) based on estimates of the energy associated with the frequency spectrum (220) and the energy associated with the defect's harmonic series (215). The method may comprise deriving a value K (215) by estimating a value M indicative of the energy of the defect's harmonic series and dividing M by the number of spectral lines corresponding to the defect's harmonic series. The method may further comprise deriving a value R (220) by estimating a value Q indicative of the energy in the frequency spectrum data and dividing Q by the number of spectral lines of the frequency spectrum data. The method further comprises deriving the harmonic activity index (225) based on the estimated K and R.</p> |
