Improved wavelet analysis for induction motors mixed-fault diagnosis

作     者：ZHANG Hanlei ZHOU Jiemin LI Gang 

作者机构：College of Aerospace EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016China 

出 版 物：《Frontiers of Electrical and Electronic Engineering in China》 (中国电气与电子工程前沿（英文版）)

年 卷 期：2007年第2卷第3期

页      面：355-360页

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

主　　题：induction motor eccentricity rub fault mixed-fault CWT frequency aliasing 

摘      要：Eccentricity is one of the frequent faults of induction motors,and it may cause rub between the rotor and the *** detection of significant rub from pure eccentricity can prolong the lifespan of induction *** paper is devoted to such mixed-fault diagnosis:eccentricity plus rub *** continuous wavelet transform(CWT)is employed to analyze vibration signals obtained from the motor *** improved continuous wavelet transform was proposed to alleviate the frequency *** results show that the proposed method can effectively distinguish two types of faults,single-fault of eccentricity and mixed-fault of eccentricity plus rub.