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对切削过程中发出的四种AE信号从时域、频域和时频域进行了分析 ,说明时频分析对提取刀具破损特征量十分有效 ,并给出了特征量提取的方法。
The four AE signals emitted during cutting process are analyzed from the time domain, the frequency domain and the time-frequency domain. It shows that the time-frequency analysis is very effective in extracting the tool damage features and the method of feature extraction is given.