| 盲分离与Hilbert-Huang结合应用于航空发动机振动信号分析 |
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| 引用本文： | 马建仓,张国强,曾媛.盲分离与Hilbert-Huang结合应用于航空发动机振动信号分析[J].机械科学与技术(西安),2010(5). |
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| 作者姓名： | 马建仓 张国强 曾媛 |
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| 作者单位： | 西北工业大学电子信息学院; |
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| 基金项目： | 国家自然科学基金项目(60612184)资助 |
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| 摘 要： | 在航空发动机故障诊断中,首要任务是分析故障信号提取故障特征。针对航空发动机非平稳振动信号,提出了利用盲分离(BSS)获得发动机的振源信号,结合Hilbert-Huang变换(HHT)对振源信号进行时频分析提取故障特征的方法。首先利用仿真信号验证了此方法的有效性,然后分析了某航空涡扇发动机空中停车故障并与直接应用HHT分析的结果进行比较,证实了盲分离与HHT的结合能更准确地提取航空发动机非平稳故障特征。
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| 关 键 词： | 航空发动机 故障特征提取 希尔伯特黄变换 盲分离 |
Application of Blind Source Separation and Hilbert-Huang Transform to Analysis of Aero-engine Vibration Signals |
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| Ma Jiancang,Zhang Guoqiang,Zeng Yuan.Application of Blind Source Separation and Hilbert-Huang Transform to Analysis of Aero-engine Vibration Signals[J].Mechanical Science and Technology,2010(5). |
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| Authors: | Ma Jiancang Zhang Guoqiang Zeng Yuan |
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| Affiliation: | Ma Jiancang,Zhang Guoqiang,Zeng Yuan |
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| Abstract: | In aero-engine fault diagnosis,analysis of fault signal and fault feature extraction are the most important tasks.For non-stationary vibration signals of an aero-engine,a method that combines blind source separation(BSS) with Hilbert-Huang transform(HHT) was proposed.First,we obtain the vibration source signals of the aero-engine using blind source separation,and then we extract the fault features of the aero-engine by analyzing the vibration source signal using Hilbert-Huang transform.The efficiency of the... |
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| Keywords: | aero-engine fault feature extraction Hilbert-Huang transform blind source separation |
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