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| Vibration Signal Analysis Based on Fractional Fourier Transform |
| GAO Yu , HUANG Yi-jian |
| College of Mechanical Engineering and Automation, Huaqiao University, Xiamen, Fujian 361021, China |
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Abstract Simulation results verify that the fractional fourier transform can suppress gaussian noise and detect the chirp signal. Mechanical vibration experiments further prove that the fractional fourier transform not only analyses stationary signals, but also is more objective to show the spectral characteristics of the signal than that by the traditional fourier transform for analysis of nonstationary signals,and extract non-stationary components.
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2012, Vol. 33 
