National-instruments Order Analysis Toolset Manuel d'utilisateur télécharger pdf (Page 60)

Glossary

LabVIEW Order Analysis Toolset User Manual G-2 ni.com

FFT Fast Fourier transform.

fundamental component Portion of a signal whose frequency is at the fundamental frequency.

Gabor coefficient The result of Gabor transform.

Gabor expansion The inverse Gabor transform used on Gabor coefficients to recover a time

domain input signal.

Gabor transform One of the invertible joint time-frequency transforms.

harmonic Frequencies that are integer or fractional multiples of a fundamental

frequency.

LMSE Least mean square error.

Nyquist frequency Half the sampling frequency. Any analog frequency component above

the Nyquist frequency will, after sampling, be converted, or aliased, to a

frequency below the Nyquist frequency. See also aliasing and anti-aliasing

filter.

order A harmonic related to the rotational speed of a machine.

order analysis The analysis of harmonics related to rotational speed. The application of

harmonic analysis to rotating machinery

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National-instruments Order Analysis Toolset Manuel d'utilisateur Page 60