分析了电路波形及实验数据、对实验研究过程中的多频率峰值、谐波干扰和幅值干扰等进行了分析和处理。
A detailed analysis about the circuit waveform and experimental data is also given the multi-frequency peak value and the frequency interference during the experiment are all analysed and processed.
因此，根据现有实验条件和其他客观因素，我们进行了多频率超声波发生器的自主研制工作，为我们后面的实验创造实验了条件。
Therefore, according to existing experiment conditions and other objective factors, we carried on an independence research and manufacture work of multi-frequencies ultrasonic device.
利用多传感器对切削力和振动信号进行监测，通过频率变换提取切削力特征量，采用小波包分解技术提取振动信号特征量。
Signals of cutting force and vibration are measured with multi-sensor and features in frequency domain and time-frequency domain are extracted by using wavelet package decomposition.
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