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同步抽取变换与复小波结构相似性指数的滚动轴承性能退化评估

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振动与冲击 ›› 2020, Vol. 39 ›› Issue (6) : 205-209.

论文

#br# 同步抽取变换与复小波结构相似性指数的滚动轴承性能退化评估

尹爱军，张智禹，李海珠

作者信息 +

Rolling bearing performance degradation assessment based on the synchroextracting transform and complex wavelet structural similarity index

YIN Aijun,ZHANG Zhiyu,LI Haizhu

Author information +

文章历史 +

摘要

为更早地检出滚动轴承异常并量化其性能退化程度，该研究提出同步抽取变换与复小波结构相似性(SET-CWSS)指数的滚动轴承性能退化评估新方法。利用同步抽取变换(SET)对当前时刻的振动信号进行时频分析，以获得能量更加集中的时频图，将SET后得到的时频图与刚投入运行时无故障振动信号的SET时频图进行复小波结构相似性(CWSS)评价，得到当前时刻滚动轴承性能退化评估SET-CWSS指数。通过疲劳试验验证及与其他性能退化评估方法对比，结果表明：SET-CWSS指数能有效的刻画出滚动轴承性能退化过程、量化评估其性能退化程度且对滚动轴承早期异常更加敏感。

Abstract

In order to detect rolling bearing abnormities earlier and quantify the degree of performance degradation, a new evaluating method was proposed based on the synchroextracting transform and complex wavelet similarity (SET-CWSS) index.The time-frequency analysis of a vibration signal at current moment was performed by the synchroextracting transform (SET) to get a more concentrated time-frequency graph.The time-frequency graph obtained after SET and the SET time-frequency graph of the fault-free vibration signal when the bearing was just put into operation were compared on the basis of complex wavelet structural similarity (CWSS).And then, the SET-CWSS index for the assessment of rolling bearing performance degradation at current moment was achieved.Through the fatigue test verification and comparisons with other performance degradation assessment methods, the results show that the SET-CWSS index can effectively describe the performance degradation process of rolling bearings, quantify the degree of performance degradation and is more sensitive to the early abnormities of rolling bearings.

导出引用

尹爱军，张智禹，李海珠. #br# 同步抽取变换与复小波结构相似性指数的滚动轴承性能退化评估[J]. 振动与冲击, 2020, 39(6): 205-209

YIN Aijun,ZHANG Zhiyu,LI Haizhu. Rolling bearing performance degradation assessment based on the synchroextracting transform and complex wavelet structural similarity index[J]. Journal of Vibration and Shock, 2020, 39(6): 205-209

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