Title: FAULT DIAGNOSIS RESEARCH OF ROTOR-CASE SYSTEM BASED ON LYAPUNOV EXPONENT ENERGY SPECTRUM ENTROPY
Abstract: A new method for fault diagnosis of aero engine rotor-case system is proposed based on the Lyapunov exponent energy spectrum entropy.The energy spectrum entropy is defined for Lyapunov exponent spectrum first,which is an overall description about the distribution of energy spectrum.Then,based on various measured time series from classified experimental data for different kings of fault mode of an aero engine the Lyapunov exponent spectra and their energy spectrum entropy are calculated.The results reveal that the Lyapunov exponent energy spectrum entropy is different,depending on different fault modes of the aero engine rotor-case system,which is helpful for fault diagnosis.Hence,the proposed method might serve as a new means for aero engine's fault diagnosis,in case the Lyapunov exponent energy spectrum entropy is different and separable for different types of mono-mode fault.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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Cited By Count: 1
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