因此，在对轴承振动信号进行故障诊断的研究中，对信号进行频谱分析，判断轴承缺陷的类型是一种重要方法。
Therefore, it is an important way to analysis the signal spectrum and determine the type of bearing defects in the study of bearing vibration signals for fault diagnosis.
通过对新测取的噪声信号样本进行检验，证明该方法能有效地判断待检样本的类型，诊断连杆轴承故障。
Case research proved it's effective to recognize new data of fault model and diagnose the faults of connecting rod bearing .
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