This work introduces the concept of time-frequency map of the phase difference between the cantilever response signal and the driving signal, calculated with a wavelet cross-correlation technique. The wavelet cross-correlation quantifies the common power and the relative phase between the response of the cantilever and the exciting driver, yielding "instantaneous" information on the driver-response phase delay as a function of frequency. These concepts are introduced through the calculation of the response of a free cantilever subjected to continuous and impulsive excitation over a frequency band. © 2012 Banfi and Ferrini.
Banfi, F., Ferrini, G., Wavelet cross-correlation and phase analysis of a free cantilever subjected to band excitation, <<BEILSTEIN JOURNAL OF NANOTECHNOLOGY>>, 2012; 3 (1): 294-300. [doi:10.3762/bjnano.3.33] [http://hdl.handle.net/10807/11599]
Wavelet cross-correlation and phase analysis of a free cantilever subjected to band excitation
Banfi, Francesco;Ferrini, Gabriele
2012
Abstract
This work introduces the concept of time-frequency map of the phase difference between the cantilever response signal and the driving signal, calculated with a wavelet cross-correlation technique. The wavelet cross-correlation quantifies the common power and the relative phase between the response of the cantilever and the exciting driver, yielding "instantaneous" information on the driver-response phase delay as a function of frequency. These concepts are introduced through the calculation of the response of a free cantilever subjected to continuous and impulsive excitation over a frequency band. © 2012 Banfi and Ferrini.
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