Through characteristic analysis of gear long and short period fault, it is constructed a BP neural network to diagnose the fault from the extracting fault characters in this thesis.
通过对典型大、小周期故障样本进行特征分析，构建了一个BP神经网络对提取的故障特征进行诊断。
The VFD model can be used not only in short time vibration analysis but also in long period storage relaxation calculation so long as different parameters are adopted.
因此采用不同的参数，VFD模型既可以用于短时间内的振动响应分析，也可以用于长时间的储存应力分析。
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