
ISSN1000 3762 CN41 1148/TH
轴承2016年5期 Bearing 2016 , No. 5
双谱分析和支持向量机在转盘轴承故障
诊断中的应用陈捷,孙英平,洪荣晶,封杨
210009
(南京工业大学机械与动力工程学院,南京
5357
摘要:针对转盘轴承故障样本少、信号微弱且不易提取的特点,提出了一种双谱分析和支持向量机相结合的故障诊断方法。首先采用双谱分析提取特征向量,然后利用支持向量机对转盘轴承正常、外图故障、单个螺栓断裂、多个螺栓断裂4种状态进行分类和识别。结果表明:该方法分类结果的总体准确率为86%,基本有效可行,但精度仍需进一步提高。
关键词:转盘轴承;故障诊断;双谱分析;支持向量机
中图分类号:TH133.33;TN911.7
文献标志码:B
文章编号:10003762(2016)05005305
ApplicationofBispectrumAnalysisandSupportVectorMachinein
Fault Diagnosis for Slewing Bearings Chen Jie,Sun Yanping, Hong Rongjing, Feng Yang
( College of Mechanical and Power Engineering, Nanjing Tech University , Nanjing 210009 , China)
Abstract : The slewing bearings are characterized with small fault samples, weak signals and difficult extraction, a fault diagnosis method is proposed based on bispectrum analysis and support vector machine ( SVM ). Firstly , the feature vector is extracted by using bispectrum analysis. Then the normal state, outer ring fault, single bolt fracture and multi-ple bolt fracture of slewing bearings are elassified and identified by using SVM. The results show that the classification result has a total accuracy of 86% . The method is essentially effective and feasible, but the precision still need to im-prove
Key words : slewing bearing; fault diagnosis; bispectrum analysis; support vector machine
转盘轴承是连接两大型相对回转体的关键部
收稿日期:2015-09-11;修回日期:2015-12-13 基金项目:国家自然科学基金项目(51375222)
作者简介:陈捷(1971一),女,教授,研究方向为机械故障诊断,Email:820967156@qq.com。
通信作者:孙炎平(1992一),男,硕士研究生,研究方向为
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