利用组合广义Harmonic小波设计梳状滤波器

摘要

Because multi-harmonic spectrum feature or multi-sideband modulated spectrum feature is often appeared in mechanical vibration signal processing,comb filer with excellent performance is needed to extract or remove these characteristic frequencies.According to the characteristics of harmonic wavelet, the detailed steps and the applied example of comb filter design are brought forward using combined gen-eralized harmonic wavelet.The result shows that the performance of comb filer can be improved by in-creasing the order of filter and using window function with small side lobe.%在机械振动信号处理中常出现多倍频谐波谱特征或多边带调制谱特征，为更好地提取或去除这些特征频率，需要设计性能优良的梳状滤波器。根据Harmonic小波的特点，给出了利用组合广义Harmonic小波设计梳状滤波器的详细步骤和应用实例。研究结果表明：增大滤波器的阶数和使用旁瓣小的窗函数可以提高梳状滤波器的性能。