The study of pulp thickness signal de-noise method based on translation invariance wavelet transform

A de-noise method based on translation invariance wavelet transform for pulp thickness signal on paper making process was developed in this work. The algorithm was developed from de-noise algorithm of Donoho's wavelet threshold and it can suppress pseudo-Gibbs phenomena on the singularity points of signal produced by de-noise algorithm of Donoho's wavelet threshold. Theoretical analysis and simulation have shown its effectiveness.