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[1]尚云飞,陈汉新,孙魁.面向齿轮箱故障诊断的序贯概率比检验理论和方法[J].武汉工程大学学报,2011,(12):65-69.
　SHANG Yun fei,CHEN Han xin,SUN Kui.Theories and methods of gearbox fault diagnosis oriented sequentialprobability ratio test[J].Journal of Wuhan Institute of Technology,2011,(12):65-69.
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面向齿轮箱故障诊断的序贯概率比检验理论和方法(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2011年12期
页码:
65-69
栏目:
机电与信息工程
出版日期:
2011-12-30

文章信息/Info

Title:
Theories and methods of gearbox fault diagnosis oriented sequential
probability ratio test
文章编号:
16742869(2011)12006505
作者:
尚云飞; 陈汉新; 孙魁
武汉工程大学机电工程学院，湖北 武汉，430205
Author(s):
SHANG Yunfei; CHEN Hanxin; SUN Kui
School of Mechanical and Electrical Engineering,Wuhan Institute of Technology,Wuhan,430205,China
关键词:
序贯概率比检验; 齿轮箱; 小波包变换; 故障诊断
Keywords:
Sequential Probability Ratio Test (SPRT); gearbox; wavelet packet transform; fault diagnosis
分类号:
TH165+.3
DOI:
-
文献标志码:
AAdoi:10.3969/j.issn.16742869.2011.12.016
摘要:
提出了一种基于序贯概率比检验的齿轮裂纹故障诊断方法，并选用了无裂纹和有裂纹的齿轮模拟故障模式.实验中提取的振动信号夹杂着噪声等干扰，运用具有良好去噪效果的小波包方法对齿轮箱振动信号进行预处理.采用时域分析法提取预处理后信号的特征值，提取对冲击性振动非常敏感的峭度值作为特征值.将序贯概率比检验算法应用于齿轮箱故障模式的检验和识别.为了验证所提出方法的诊断能力，本文选用均方根误差的方法来计算同种故障之间，以及不同种类故障之间的识别误差，结果表明了所提出的方法是有效且强大的.
Abstract:
A novel method of fault diagnosis of gearbox based on sequential probability ratio test（SPRT） was proposed in this paper.The gear with the crack is used to simulate the gear fault mode.The wavelet packet transform was used to preprocess the signals.The time domain analysis was applied to extract the fault feature values of the vibration signals after preprocessing.The kurtosis value is used as the feature parameter because it is sensitive to impact vibration.The SPRT algorithm was developed to detect the gearbox fault mode.In order to test the diagnostic capability of SPRT,the root mean square error (RMSE) was used to calculate the errors between the same faults and between the different faults.The results show that the presented method was effective and robust.

参考文献/References:

［1］Wald A.Sequential Analysis［M］.New York:Wiley,1947.
［2］Yu Chenggang,Su Bingjing.A nonparametric sequential ranksum probability ratio test method for binary hypothesis testing［J］.Signal Processing,2004(84):12671272.
［3］李炜，朱芸，毛海杰，等.SPRT检验法和小波变换法在管道泄漏检测中的应用［J］.计算机测量与控制，2005(9):903904.
［4］舒苗淼,刘广璞,潘宏侠.基于小波包分解的机械振动信号分析［J］.起重运输机械，2009(9):6164.
［5］鲁艳军,陈汉新，贺文杰,等.基于混合特征提取和WNN的齿轮箱故障诊断［J］.武汉工程大学学报，2011,33(5):8288.
［6］陈汉新，王庆军，陈绪兵,等.基于解调振动信号特征提取齿轮箱的故障诊断［J］.武汉工程大学学报,2010,32(9):6777.
［7］贺文杰,Bajolet Julien,Yoann Plassard,等.基于EMD和FFT的齿轮箱故障诊断［J］.武汉工程大学学报,2011,33(1):6570.
［8］安妮，徐建民.齿轮箱振动的故障诊断与实例分析［J］.武汉工程大学学报，2011，33(12)：7072.
［9］Min Z H,Sun L M.A novel nonparametric sequential probability ratio test method for structural condition assessment［C］∥Health Monitoring of Structural and Biological Systems.Edited by Kundu,Tribikram,Proceedings of the SPIE,2010(7650):19.

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