On analysis of features of subway vibration signal based on wavelet transform
Wen Jia-peng · Shanxi Architecture · 2012
The paper applies the wavelet transform to undertake the spectrum analysis of the ground vibration signals caused by the subway,adopts MATLAB to compile the wavelet decomposition program,decomposes and reconstructs the measured accelerated signals,achieves the change law of the acceleration signals within the time-frequency domain,discusses the relationship among the vibration signal peak acceleration,the energy and the frequency,and indicates the wavelet transform has higher resolving power and more suitable for the analysis of unstable signals,compared with the fourier transform.