Limits of the Discrete Fourier Transform in Exact Identifying of the Vibrations Frequency
Journal Title: Romanian Journal of Acoustics and Vibration - Year 2015, Vol 12, Issue 1
Abstract
This paper present the limitations encountered by using the Discrete Fourier Transform for the analysis of vibration signals. Difficulties in determining the precise frequencies appear particularly in cases where the acquired vibration signals are characterized by low frequency and short duration. The performed analyzes, made for different specific situations by using the signal processing toolbox of the Scilab program, succeed highlighting the reduced capability of the Discrete Fourier Transforms to accurately evaluate the frequency values.
Authors and Affiliations
Cristian CHIONCEL, Nicoleta GILLICH, Gelu TIRIAN, Jean NTAKPE
Keywords
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Limits of the Discrete Fourier Transform in Exact Identifying of the Vibrations Frequency
This paper present the limitations encountered by using the Discrete Fourier Transform for the analysis of vibration signals. Difficulties in determining the precise frequencies appear particularly in cases where the acq...