机械科学与技术2018，Vol.37Issue(3)：386-390,5.DOI:10.13433/j.cnki.1003-8728.2018.0309
改进ITD和切片双谱的曳引机减速器故障特征提取
Extracting Fault Features of Tractor Reducer with Improved ITD Method and Slice Bispectrum
傅其凤 1宋子博 1李松1
作者信息
- 1. 河北科技大学机械工程学院,河北石家庄050018
- 折叠
摘要
Abstract
To effectively identify the fault features of a tractor reducer,a fault diagnosis method based on the improved inherent time-scale decomposition (ITD) and slice bispectrum is proposed.The improved ITD method adopted the segmented cubic Hermit interpolation to obtain the envelope of the signal,and is used to decompose the reducer fault signal into several inherent components,the correlation component is selected and the slice bispectrum is obtained.Based on the nonlinear characteristics of the secondary phase coupling,the frequency of fault feature is found by comparing the spectral spectrum with the slice bispectrum.The simulation results show that the improved ITD method and slice bispectrum can eliminate the information on non-quadratic phase coupling and extract fault features accurately.关键词
减速器/分段三次Hermit差值/切片双谱/二次相位耦合/特征提取Key words
inherent time-scale decomposition (ITD)/diagnosis/feature extraction/frequency/phase/tractor reducer/slice bispecturm分类
机械制造引用本文复制引用
傅其凤,宋子博,李松..改进ITD和切片双谱的曳引机减速器故障特征提取[J].机械科学与技术,2018,37(3):386-390,5.
