系统仿真学报 ›› 2020, Vol. 32 ›› Issue (3): 525-532.doi: 10.16182/j.issn1004731x.joss.18-0216

• 国家安全仿真 • 上一篇    下一篇

航空发动机振动信号分析

皮骏1, 常佳泽2, 刘光才1   

  1. 1. 中国民航大学 通航学院,天津 300300;
    2. 中国民航大学 中欧航空工程师学院,天津 300300
  • 收稿日期:2018-04-15 修回日期:2018-11-08 出版日期:2020-03-18 发布日期:2020-03-25
  • 作者简介:皮骏(1973-),男,内蒙古包头,博士,副教授,研究方向为航空推进系统;常佳泽(1993-),男,河北秦皇岛,硕士生,研究方向为发动机噪音分析。刘光才(1966-),男,湖北,硕士,教授,研究方向为通航规划。

Analysis of Aeroengine Vibration Signal

Pi Jun1, Chang Jiaze2, Liu Guangcai1   

  1. 1. College of General Aviation, Civil Aviation University of China, Tianjin 300300, China;
    2. Sino-European Institute of Aviation Engineering, Civil Aviation University of China, Tianjin 300300, China
  • Received:2018-04-15 Revised:2018-11-08 Online:2020-03-18 Published:2020-03-25

摘要: 针对航空发动机转子振动特性,提出基于累积量改进的独立分量分析盲源分离算法。运用新方法对转子振动信号进行分离,识别转子中的故障类型。通过航空发动机转子振动仿真实验验证了该算法的有效性。结合仿真实验,对比基于二阶累积量和高阶累积量的已有算法,该新方法在性能指数和信号相似系数方面均有提高。应用该算法对发动机转子平台采集的振动信号进行分离,转子故障设置为外环故障。实测振动信号经该算法处理后有更高的辨识性,可以判断出转子振动的故障类型。

关键词: 航空发动机, 盲源分离, 转子振动, 累积量

Abstract: Aiming at the analysis of the vibration characteristics of aeroengine rotor, an improved blind source separation algorithm based on cumulant independent component analysis (ICA) is proposed. The new algorithm is used to separate the rotor vibration signal and identify the rotor fault types. The effectiveness of this algorithm is verified by the aeroengine rotor vibration signal simulation. Comparing with the existing algorithms based on second-order cumulants and high-order cumulants, the new method improves the performance index and the signal similarity coefficient. This algorithm is used to separate the vibration signal collected by the engine rotor platform and the rotor fault is set as the outer ring fault. The vibration signal measured by this algorithm has a higher recognition, and the fault types of rotor vibration can be identified.

Key words: aeroengine, blind source separation, rotor vibration, cumulant

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