改进Hilbert-Huang变换及其在转静子碰摩仿真中的应用

何田; 刘献栋; 单颖春; 李其汉

改进Hilbert-Huang变换及其在转静子碰摩仿真中的应用

1.
北京航空航天大学能源与动力工程学院, 北京 100083
2.
北京航空航天大学汽车工程系, 北京 100083

基金项目: 航空科学基金(03I51037)

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- 被引次数: 0
出版历程
- 收稿日期: 2006-11-20
- 修回日期: 2007-01-31
- 刊出日期: 2007-10-28

Improved Hilbert-Huang transform and its application in rotor-stator rub

1.
School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2.
Department of Automobile Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 针对Hilbert-Huang变换(HHT)的不足,应用时间序列重构矩阵奇异值分解的能量分析方法改进了HHT,并提出了用来识别伪固有模态函数(IMF)的方法.利用仿真信号检验了改进HHT的效果.将改进后的HHT应用到某双转子航空发动机轻碰摩故障仿真试验结果的检测中,并与改进前HHT和小波分析的结果进行了比较,得出了改进后的HHT具有有效分离出微弱信号分量等优势,且能比小波变换更好地确定碰摩的存在.
- 航空、航天推进系统 /
- 改进HHT /
- 碰摩 /
- 经验模态分解(EMD) /
- 故障诊断
Abstract: In order to overcome the shortages of Hilbert-Huang transform(HHT), an improved HHT was proposed by the energy analysis method based on the singularity value decomposition of the track matrix reconstructed by time series, and a method for judging the pseudo-IMFs by empirical mode decomposition(EMD) was also presented.The advantages of improved HHT were verified from simulation signals.Then, the improved HHT was applied to detect the slight rubbing simulation of dual-rotor aero engine.The simulation results were compared with previous HHT and wavelet transform, respectively, showing that the improved HHT has the advantage of separating efficiently the weak component of signals from other strong components, and also confirming the slight rubbing more easily.The analytical results provide a useful reference for diagnosing the fault of rubbing.
- aerospace propulsion system /
- improved Hilbert-Huang transform(HHT) /
- rub /
- empirical mode decomposition(EMD) /
- fault diagnose

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参考文献(7)

[1]	Peng Z K,Chu F L,He Y Y.Vibration signal analysis and feature extraction based on reassigned wavelet scalogram[J].Journal of Sound and Vibration,2002,253(5):1087-1100.
[2]	Peng Z K,Peter W T,Chu F L.A comparison study of improved Hilbert-Huang transform and wavelet transform:Application to fault diagnosis for rolling bearing[J].Mechanical Systems and Signal Processing,2005,19:974-988.
[3]	Huang N E,Shen Z,Long S R.The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis[J].Proc R Soc Lond A,1998,454:903-995.
[4]	胡劲松,杨世锡,吴昭同,等.基于EMD和HT的旋转机械振动信号时频分析[J].振动、测试与诊断,2004,24(2):106-110.HU Jingsong,YANG Shixi,WU Zhaotong,et al.Time-frequency analysis of vibration signals in rotating machinery[J].Journal of Vibration,Measurement & Diagnosis,2004,24(2):106-110.
[5]	Peng Z K,Peter W T,Chu F L.An improved Hilbert-Huang transform and its application in vibration signal analysis[J].Journal of Sound and Vibration,2005,286:187-205.
[6]	沈国际,陶利民,陈仲生.多频信号经验模态分解的理论研究及应用[J].振动工程学报,2005,18(1):97-94.SHEN Guoji,TAO Limin,CHEN Zhongsheng.Theoretical research on empirical mode decomposition of multi-frequency signal and its application[J].Journal of Vibration Engineering,2005,18(1):97-94.
[7]	单颖春,刘献栋,何田,等.双转子系统碰摩有限元接触分析模型及故障诊断[J].航空动力学报,2005,20(5):789-794.SHAN Yingchun,LIU Xiandong,HE Tian,et al.Research on the finite element impact-contact analytical model of dual-rotor system and its diagnosis method[J].Journal of Aerospace Power,2005,20(5):789-794.