摘要
针对滚动轴承前期故障特征信息微弱且易受噪声影响,导致轴承故障损伤程度难以判断的问题,提出一种基于三阶累积量对角切片谱和灰色关联理论的新方法,来获取轴承故障部位以及损伤直径大小。利用三阶累积量对角切片谱抑制高斯噪声以及能够识别二次相位耦合信号等特性,判断出轴承故障部位信息;利用灰色关联理论对三阶累积量对角切片数据进行峭度指标、脉冲指标以及裕度指标分析,得到轴承前期故障损伤程度曲线图。通过该方法对实际信号进行分析,非常清楚的得到轴承故障部位以及损伤直径大小,表明了该方法的可行性以及实用性。
Aiming at the problem that the fault information of rolling bearing was weak and susceptible to noise,which was difficult to judge the damage degree of bearing failure,a new method was proposed.Bearing fault location and damage diameter size could be obtained using the method based on third-order cumulant diagonal slice spectrum and gray correlation theory.Bearing fault location information could be determined using the characteristics of third-order cumulant diagonal slice spectrum to suppress the Gaussian noise and to identify the secondary phase coupling signal.And gray relational theory was used to analyze the kurtosis index,the pulse index and the margin index of the third-order cumulant diagonal section data to obtain the curve of the damage degree.Finally,actual signal is analyzed to obtain the bearing fault location and the damage diameter,which indicates the feasibility and practicability of the method.
作者
蒋章雷
吴雅朋
王吉芳
徐小力
JIANG ZhangLei;WU YaPeng;WANG JiFang;XU XiaoLi(Beijing Information Science and Technology University,The Ministry of Education Key Laboratory of Modern Measurement and Control Technology,Beijing 100192)
出处
《机械强度》
CAS
CSCD
北大核心
2019年第4期763-769,共7页
Journal of Mechanical Strength
基金
国家高技术研究发展计划(863计划)(2015AA043702)
北京市教委科研计划项目(KM201611232020)
北京市优秀人才培养计划(2017000020124G019)
北京信息科技大学“勤信人才”培育计划(QXTCP C201713)资助~~
关键词
滚动轴承
损伤程度评价
对角切片谱
灰色关联度
Rolling bearing
Damage degree assessment
Diagonal slice spectrum
Grey incidence grade
