The A/D transformation function of PC sound card is used to gather noise signal. wavelet packet filtering algorithm is used to eliminate the noise that is independent of the frequency of rotating and pick up the real vibration.
The A/D transformation function of PC sound card is used to gather noise signal. wavelet packet filtering algorithm is used to eliminate the noise that is independent of the frequency of rotating and pick up the real vibration.
利用计算机声卡的A/D转换功能来采集电动机的噪声信号，应用小波包滤波方法消除与回转频率无关的噪声干扰，提取与转速直接相关的振动信号。