滚动轴承故障特征频率实验改变与间谐波倍频误差机理研究
发布时间：2019-04-27 02:13
【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。
[Abstract]:The calculation of fault characteristic frequency of rolling bearing has always been an important theoretical basis in the field of fault diagnosis and condition monitoring of rolling bearing. However, it is found that the measured value of fault characteristic frequency is not completely consistent with the calculated value of fault characteristic frequency formula, and the fault characteristic frequency of two groups of different experimental data under the same experimental conditions is not exactly the same. The relationship between harmonic frequency and fundamental frequency is not strictly multiple, that is, there are many problems such as inter-harmonic frequency doubling error. Then, the mechanism of experimental change of characteristic frequency and the fundamental cause of inter-harmonic frequency doubling error are thoroughly analyzed. Based on this, the error improvement method is discussed theoretically, which provides the theoretical basis for fault diagnosis and improvement of rolling bearing.
【作者单位】： 青岛理工大学机械工程学院;
【基金】：国家自然科学基金(51075220) 山东省高等学校科技计划(J13LB11) 高等学校博士学科点专项科研基金(20123721110001) 青岛市科技计划基础研究项目(12-1-4-4-(3)-JCH)
【分类号】：TH133.33
本文编号：2466601
[Abstract]:The calculation of fault characteristic frequency of rolling bearing has always been an important theoretical basis in the field of fault diagnosis and condition monitoring of rolling bearing. However, it is found that the measured value of fault characteristic frequency is not completely consistent with the calculated value of fault characteristic frequency formula, and the fault characteristic frequency of two groups of different experimental data under the same experimental conditions is not exactly the same. The relationship between harmonic frequency and fundamental frequency is not strictly multiple, that is, there are many problems such as inter-harmonic frequency doubling error. Then, the mechanism of experimental change of characteristic frequency and the fundamental cause of inter-harmonic frequency doubling error are thoroughly analyzed. Based on this, the error improvement method is discussed theoretically, which provides the theoretical basis for fault diagnosis and improvement of rolling bearing.
【作者单位】： 青岛理工大学机械工程学院;
【基金】：国家自然科学基金(51075220) 山东省高等学校科技计划(J13LB11) 高等学校博士学科点专项科研基金(20123721110001) 青岛市科技计划基础研究项目(12-1-4-4-(3)-JCH)
【分类号】：TH133.33
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