基于小波包分析的数字信号处理

Digital signal processing based on wavelet packet theory

小波包分析具有优良的时频特性,可以有效地用于数字信号的消噪处理和对信号进行特征提取。小波包分析可以对电机振动故障进行诊断,以便随时排除故障。同时,给出并分析了试验结果。

The wavelet packet theory has the good hour-frequency characteristic, it can be availably used for the noise suppression processing of the digital signal and withdrawing the signal characteristic. The wavelet packet theory is used for fault diagnosis of vibration in electrical machine to expel the breakdown in the time. Experiment rsult is given and analyzed.