| 基于FFT的航空发动机整机振动分量实时跟踪监视 |
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| 引用本文： | 李国鸿,赵述元,陈钊.基于FFT的航空发动机整机振动分量实时跟踪监视[J].燃气涡轮试验与研究,2011,24(1):51-53,58. |
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| 作者姓名： | 李国鸿 赵述元 陈钊 |
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| 作者单位： | 中国飞行试验研究院,西安,710089 |
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| 摘 要： | 依据DFF(离散傅立叶变换),FFT(快速傅立叶变换)、加窗等数字信号处理理论,以及复指数函数的相关性质,并结合目前国内航空发动机整机振动信号处理现状,提出了基于FFr的航空发动机整机振动分量跟踪监视方法.该方法首先将时域加速度振动信号分解为多个简谐振动合成结果,然后根据系统输人的转子转速信号,跟踪计算转子基频激起的简...
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| 关 键 词： | 航空发动机 振动 振动总量 振动分量 谐波分解 快速傅立叶变换 |
Tracing and Monitoring for Aero-engine Harmonic Vibration Based on Fast Fourier Transform |
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| LI Guo-hong,ZHAO Shu-yuan,CHEN Zhao.Tracing and Monitoring for Aero-engine Harmonic Vibration Based on Fast Fourier Transform[J].Gas Turbine Experiment and Research,2011,24(1):51-53,58. |
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| Authors: | LI Guo-hong ZHAO Shu-yuan CHEN Zhao |
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| Institution: | LI Guo-hong,ZHAO Shu-yuan,CHEN Zhao(Chinese Flight Test Establishment,Xi'an 710089,China) |
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| Abstract: | According to Discrete Fourier Transform(DFT),Fast Fourier Transform(FFT),window digital signal processing algorithms and complex exponent characteristics,a method of tracing and monitoring for aero-engine harmonic vibration is presented based on FFT.After having decomposed the acceleration vibration signal as sum of several harmonic vibration,this method traces the amplitude of single-frequency vibration spurred by a rotor to implement the aim of tracing and monitoring aero-engine vibration.System error of ... |
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| Keywords: | aero-engine vibration multiple-frequency vibration single-frequency vibration harmonic decomposition Fast Fourier Transform |
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