摘要
针对模糊熵在提取滚动轴承性能退化特征时敏感度较低的问题,提出了一种基于类Sigmoid函数的改进模糊熵,并将其用于滚动轴承退化特征提取。针对传统的滚动轴承性能退化评估方法局部化的问题,提出了一种基于灰关系的滚动轴承性能退化评估方法,该方法使用灰关系理论评估提取的滚动轴承退化特征与可靠性之间的关系,从而达到从滚动轴承可靠性演变规律的整体角度评估滚动轴承退化特征的目的。实验结果表明,改进模糊熵可以精准地提取出滚动轴承的性能退化特征,并且基于改进模糊熵提取的滚动轴承退化特征与滚动轴承的保持可靠度具有一致的演变规律,可信水平均达到95%以上。
In light of low sensitivity of fuzzy entropy in extracting degraded features of rolling bearing,an improved fuzzy entropy based on the sigmoid-like function is proposed.Aiming at the localization issues of assessment methods for traditional rolling bearing performance degradation,a novel performance degradation evaluation method based on grey relation is proposed.This method uses grey relation theory to evaluate the relationship between extracted rolling bearing degradation characteristics and reliability,so as to achieve the purpose of evaluating the degradation features of rolling bearing from the overall perspective of rolling bearing reliability evolution.The experimental results show that the improved fuzzy entropy can accurately extract the performance degradation features of rolling bearing,and the rolling bearing degradation features extracted based on the improved fuzzy entropy have a consistent evolution law with the rolling bearing maintaining reliability,with a credibility level above 95%.
作者
程立
马文锁
夏新涛
王良文
Cheng Li;Ma Wensuo;Xia Xintao;Wang Liangwen(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471003,China;Collaborative Innovation Center of Machinery Equipment advanced Manufacturing of Henan Province,Henan University of Science and Technology,Luoyang 471003,China;Henan Provincial Key Laboratory of Intelligent Manufacturing of Mechanical Equipment,School of Mechanical and Electrical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China)
出处
《机械传动》
北大核心
2022年第1期56-64,86,共10页
Journal of Mechanical Transmission
基金
国家自然科学基金(51475144,52075500)。
关键词
滚动轴承
退化特征
模糊熵
可靠性
灰关系
Rolling bearing
Degradation characteristic
Fuzzy entropy
Reliability Grey relation
