首页 | 本学科首页   官方微博 | 高级检索  
     

基于小波变换和曲线拟合法的柴油机故障诊断
引用本文:周玉丰. 基于小波变换和曲线拟合法的柴油机故障诊断[J]. 价值工程, 2011, 30(19): 41-43
作者姓名:周玉丰
作者单位:四川信息职业技术学院,广元,628017
摘    要:为了对柴油机故障类型进行准确诊断,对柴油机缸盖振动信号进行特征提取,所测取的信号通过小波变换提取时域、频域特征参数,得到相应的拟合曲线并计算多项式系数。设定两种常见故障,通过比较其小波变换拟合多项式系数与标准模式间的距离,从而判断出故障类型。经过验证,所判断出的故障类型正好为所设定的故障,由此表明该方法具有很大的优越性。

关 键 词:故障诊断  测试系统  振动信号  小波变换  曲线拟合

Fault Diagnosis for Diesel Engines Based on Wavelet Transform and Curve Fitting Method
Zhou Yufeng. Fault Diagnosis for Diesel Engines Based on Wavelet Transform and Curve Fitting Method[J]. Value Engineering, 2011, 30(19): 41-43
Authors:Zhou Yufeng
Affiliation:Zhou Yufeng(Sichuan College of Information Technology,Guangyuan 628017,China)
Abstract:In order to diagnose the fault types of diesel engines accurately,the cylinder head vibration signal was measured and its features were extracted.The feature parameters are measured on time domain and on frequency after wavelet transformation.The fit curves and the fit multinomial coefficient are obtained. The two generic faults are established.It is easily found which fault it is by comparing the distance between its fit multinomial coefficient and the standard models.It is proved that the method had more ...
Keywords:fault diagnosis  testing system  vibration signal  wavelet transform  curve fitting  
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号