小波阈值降噪技术在振动信号处理中的应用

Application of Wavelet Threshold De-noising Technique in Vibration Signals Processing

通过对转子不对中故障信号的模拟仿真,用小波阈值降噪法消噪,分析比较几种不同小波函数降噪的效果,对比默认阈值方法与自适应阈值消噪方法的降噪效果,结果表明,自适应阈值比默认阈值更具有可信度。

Employing the signal simulation with the fault of eccentricity of the rotor and the wavelet threshold de-noising technique, the de-noising effects of several wavelet functions were analyzed. The de-noising effects of the default threshold method and the self-adaptive threshold method were compared. The result shows that the serf-adaptive threshold method is more reliable than the default threshold method.