| 基于声发射信号信息距的滚动轴承故障诊断 |
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| 引用本文： | 田晶,艾延廷,赵明,王志,关焦月.基于声发射信号信息距的滚动轴承故障诊断[J].航空动力学报,2017,32(1):148-154. |
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| 作者姓名： | 田晶 艾延廷 赵明 王志 关焦月 |
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| 作者单位： | 1.西北工业大学 动力与能源学院,西安 710072 |
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| 基金项目： | 国家自然科学基金（51505300）;中航工业产学研专项项目（cxy2012sh17） |
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| 摘 要： | 在信息熵理论基础上,提出了一种融合小波能谱与马氏距离的信息距滚动轴承故障诊断方法.利用双转子试验台对滚动轴承内圈故障、外圈故障、滚动体故障、内圈 滚动体故障和内圈 外圈故障进行模拟,并采集其声发射信号.利用提出的信息距方法对获取的声发射信号进行分析,成功实现滚动轴承单一故障和耦合故障诊断.结果表明该方法信息利用率高于信息熵方法,能够清晰和准确地诊断出滚动轴承早期故障,效果明显优于信息熵距的诊断方法.
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| 关 键 词： | 信息距 声发射 马氏距离 滚动轴承 故障诊断 |
| 收稿时间： | 2016/3/23 0:00:00 |
Fault diagnosis for rolling element bearings based on information exergy distance of acoustic emission signal |
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| TIAN Jing,AI Yan-ting,ZHAO Ming,WANG Zhi,GUAN Jiao-yue.Fault diagnosis for rolling element bearings based on information exergy distance of acoustic emission signal[J].Journal of Aerospace Power,2017,32(1):148-154. |
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| Authors: | TIAN Jing AI Yan-ting ZHAO Ming WANG Zhi GUAN Jiao-yue |
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| Abstract: | Based on the information entropy theory, a fault diagnosis methodology for rolling element bearings was proposed. It is a fusion of wavelet energy spectrum exergy and Mahalanobis distance. Inner ring fault, outer ring fault, rolling element fault, inner ring rolling element fault and inner ring outer ring fault of rolling element bearing were simulated on a twin spool rotor test rig. The acoustic emission signals of each fault were collected. Single fault and coupling faults of rolling element bearings were successfully diagnosed using the information exergy distance method for acoustic emission signals. The diagnosis results show that the method has higher information utilization ratio than the information entropy method. It can diagnose early faults in rolling element bearing clearly and accurately, which is proved more effective than the information entropy distance method. |
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| Keywords: | information exergy distance acoustic emission Mahalanobis distance rolling element bearing fault diagnosis |
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