经过小波变换得到的各个频带内信号特征会有较大的变化因此可以将频带能量作为特征信息用来构造特征向量从而区分故障模式。频带能量和故障模型之间具有一定的映射关系。改写
After performing wavelet transform, the signal characteristics in each frequency band undergo significant changes. Therefore, the energy in each frequency band can be used as feature information to construct a feature vector for distinguishing fault patterns. There exists a certain mapping relationship between the frequency band energy and the fault models.
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