Modal Analysis Using Time-Frequency Transform
نویسندگان
چکیده
Traditional modal analysis methods use either time domain or frequency domain approaches. Because vibration signals are generally non-stationary, time and frequency information is needed simultaneously in many cases. This paper presents an overview of the applications of joint time-frequency methods for modal analysis. Since a joint time-frequency analysis can decouple vibration modes, it has an advantage, especially when information about the excitation is not available. In this paper the modal parameters are estimated using Gabor analysis. Numerical simulations and experiments have also been carried out.
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