...学报（自然科学版、英文版） 关键字: 多振动信号；信息融合；SVM；故障诊断；齿轮[gap=1072]Key words: multi-vibration signal; information fusion; SVM (support vector machine); fault diagnosis; gear..
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针对不同故障类型下的液压泵振动信号具有不同复杂性的特点，将多尺度熵引入到液压泵故障识别中。
The vibration signals of hydraulic pump with different fault types have different complexity. The multi-scale entropy is introduced into the fault identification of hydraulic pump.
然后，采用信号处理和计算机控制技术，提出了多频振动主动控制规律；
Then using the signal processing and microcomputer control techniques, a phase control law is presented to control the multi-frequence vibrations of rotors actively.
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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