| 改进Hilbert-Huang变换及其在转静子碰摩仿真中的应用 |
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| 引用本文： | 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[J].航空动力学报,2007,22(10):1779-1784. |
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| 作者姓名： | 何田 刘献栋 单颖春 李其汉 |
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| 作者单位： | 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 |
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| 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.
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| 关 键 词： | 航空、航天推进系统 改进HHT 碰摩 经验模态分解(EMD) 故障诊断 分析方法改进 小波变换 静子 碰摩故障 仿真试验 应用 application transform 存在 优势 分量 微弱信号 分离 比较 小波分析 检测 结果 航空发动机 双转子 效果 |
| 文章编号： | 1000-8055(2007)10-1779-06 |
| 收稿时间： | 2006/11/20 0:00:00 |
| 修稿时间： | 2006年11月20 |
Improved Hilbert-Huang transform and its application in rotor-stator rub |
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| HE Tian,LIU Xian-dong,SHAN Ying-chun and LI Qi-han.Improved Hilbert-Huang transform and its application in rotor-stator rub[J].Journal of Aerospace Power,2007,22(10):1779-1784. |
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| Authors: | HE Tian LIU Xian-dong SHAN Ying-chun and LI Qi-han |
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| Institution: | School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;Department of Automobile Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;Department of Automobile Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| 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. |
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| Keywords: | aerospace propulsion system improved Hilbert-Huang transform(HHT) rub empirical mode decomposition(EMD) fault diagnose |
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