Question

英语翻译在研究了异步电机常见故障类型和诊断方法的基础上,详细分析了电机滚动轴承异常、转子断条、气隙偏心等故障原因,采用基

Answer 1

In the study of asynchronous motor common fault type and diagnosis method, on the basis of the detailed analysis of the motor rolling bearing fault bars, abnormal and rotor air-gap eccentric, etc, the fault reason based on wavelet packet to the vibration of rolling bearings diagnostics, electrical fault diagnosis. Known for existence of motor bearing fault in fault state collected by vibration signal, kurtosis value are calculated and wavelet packet analysis, choose the method of combining the wavelet, db3 as wavelet packet analysis, to contain fault feature frequency information signal reconstruction, obtain bearing fault characteristic frequency characteristic frequency, according to the fault of the numerical and energy, confirmed the bearing fault type.