According to the characteristic of electromotor fault,a method of optimal wavelet basis selection based on signal is put forward,which regards the energy-threshold curve as the applicability criterion of wavelet basis.

Improving singnal integrity in long high-speed circuit based on best wavelet packet basis;

Based ondiscussing the fast searching algorithm of best wavelet packet basis (BWPB)adoping shannon cntropy, a new method based on BWPB is presented to denoise and detect the faulted motor signal.

Based on the best wavelet packet basis,a new method of gyro signal denoising algorithm which adopts shannon-Weaker entropy is presented in this paper.

The best complex wavelet packet basis is determined by using logarithm entropy cost function in high frequency directional sub-images.

Algorithm of design of optimal wavelet processing;

As to the known shapes of the PD (partial discharge) pulses, the PD pulse buried in excessive noise can be extracted successfully by multi-resolution signal decomposition that based on the optimal wavelet, and then reconstructed via a proper threshold.

In this paper,algorithms of constructing wavelet filters based on genetic algorithm are studied with emphasis on how to construct the optimal wavelet filters used to compress a given image.

The basic principle of optimal wavelet package decomposition based on entropy criterion was introduced.