Wavelet Denoising of Vehicle Platform Vibration Signal Based on Threshold Neural Network

Figure 5

TNN structure of unsupervised learning, where are the wavelet coefficients obtained from the wavelet decomposition of signal , are the normalized wavelet coefficients, are the new normalized wavelet coefficients tuned by thresholding function (11), and the optimal thresholds of thresholding function (11) are selected by (12) and (13), and are the antinormalized wavelet coefficients, which is used for the wavelet reconstruction of signal .