航空发动机转静子碰摩振动信号分析  

Vibration Signal Analysis of Aeroengine Rotor and Stator Rub-impact Failure

作　　者：张鹏 沈茂先 范启华 袁鑫 王洪斌 李杰静 田俊 Zhang Peng;Shen Mao-xian;Fan Qi-hua;Yuan Xin;Wang Hong-bin;Li Jie-jing;Tian Jun(AECC GuiYang Engine Design Research Institute,Guizhou Guiyang 550081)

机构地区：[1]中国航发贵阳发动机设计研究所,贵州贵阳550081

出　　处：《内燃机与配件》2025年第1期66-68,共3页Internal Combustion Engine & Parts

摘　　要：在航空发动机发生转静子碰摩时,发动机振动信号会出现频率调制(FM)的现象。频率调制会导致瞬时频率波动,它携带着航空发动机的关键故障信息。本文采用频率选择性滤波器分别对振动信号进行处理,将振动信号分别滤波为两个信号分量,将奇异值分解用于降低每个信号分量的噪声。希尔伯特(Hilbert)变换用于从振动信号中提取振荡瞬时频率。该方法通过数值模拟进行了验证,然后通过具有碰摩故障的航空发动机数据进行了验证,经验证该方法适用于检测航空发动机碰摩故障。The rub-impact fault,which occur in the aero-engine,can cause the frequency modulation(FM)in its vibration signal.Frequency modulation will cause instantaneous frequency fluctuations,which carry key fault information of the aeroengine.In this paper,by using frequency selective filter,vibration signal can be processed into two signal components,then singular value decomposition is used to reduce noise of each signal component.Hilbert transform is used to extract the instantaneous frequency of oscillation from the vibration signal.The method is verified by numerical simulation and then verified by the data of an aeroengine with rub-impact fault,and this method is suitable for detecting aeroengine rub-impact faults.

关 键 词：航空发动机 碰摩 奇异值分解 HILBERT变换 频率调制 

分 类 号：V263.3[航空宇航科学与技术—航空宇航制造工程]