中文摘要：

滚动轴承故障特征频率计算一直是滚动轴承故障诊断和状态监测领域的重要理论依据。但实验发现,故障特征频率实验测得值与故障特征频率公式计算值并不完全吻合、相同实验条件下两组不同的实验数据得到的故障特征频率也不完全一致、谐波频率与基频并不是严格意义上的倍数关系,即存在间谐波倍频误差等诸多问题。随后深入并全面分析了特征频率实验改变机理以及间谐波倍频误差的根本原因,并以此为据从理论上探讨了误差改进方法,为滚动轴承故障诊断及方法改进提供了理论依据。

英文摘要：

The calculation of characteristic frequency of rolling bearing fault is the important theory basis for rolling bearing fault diagnosis and condition monitoring all the time. Through the experiments,discovering that the experimental results are fail to agree with the theoretical calculation value,the experimental data is not repeatable,the characteristic frequencies aren＇t diploid related to each other,that is exist with the interharmonic frequency doubling error,and so on. Then,the root cause of errors of experiment results change characteristic frequency and interharmonic frequency doubling are analyzed and the methods of improving errors theoretically are discussed under the above basic study,a theoretical basis for rolling bearing fault diagnosis and improving method is provided.