噪声与振动控制2015，Vol.35Issue(6)：87-90,94,5.DOI:10.3969/j.issn.1006-1335.2015.06.019
EMD-PCA与相关分析在航空发动机弹支动应力信号中的应用
Application of EMD-PCA and Correlation Analysis in Dynamic Stress Signal Analysis of the Aero-engine Elastic Supporters
摘要
Abstract
A new method for fault diagnose of the rotor systems in small and medium size aero-engines was proposed. In this method, strain gages were attached to the strips of the elastic supporter to obtain the dynamic stress signals of the elastic supporter of the rotor system during aero-engine operating. Then, the dynamic stress signals of the elastic supporter were decomposed by EMD, and the IMFs principal components were obtained by PCA. The noise assessment criterion was established by correlation coefficients to remove the principal components of disturbance. Finally, the denoised signals were obtained by reconstruction of the remaining principal components. Practical application shows that this method can effectively recognize the rotor system faults.关键词
振动与波/航空发动机/弹性支承器/EMD/PCA/相关系数Key words
vibration and wave/aero-engine/elastic supporter/EMD/PCA/correlation coefficient分类
信息技术与安全科学引用本文复制引用
杨伟新,王平,雷沫枝,陈运西..EMD-PCA与相关分析在航空发动机弹支动应力信号中的应用[J].噪声与振动控制,2015,35(6):87-90,94,5.基金项目
中航工业技术创新基金(2012B60804R) （2012B60804R）
