李宏坤   

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Language:English

Paper Publications

Title of Paper:基于经验模式分解的全息谱故障识别方法

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Date of Publication:2011-02-15

Journal:振动、测试与诊断

Included Journals:EI、PKU、CSCD、Scopus

Volume:31

Issue:1

Page Number:20-22

ISSN No.:1004-6801

Key Words:经验模式分解 信号滤波 转子 全息谱 故障识别

Abstract:由于实测信号中的一些噪声干扰会影响全息谱对信号分析的准确性,采用经验模式分解(emprical mode decomposition,简称EMD)方法进行信号滤波以提高识别的可靠性.应用EMD对信号分解,并结合互相关系数对内蕴模式分量(intrinsic mode function,简称IMF)进行滤波,在此基础上对信号进行重构,以降低噪声干扰,并对实际测试信号进行有效提纯.最后,对滤波后的转子信号进行全息谱分析,并通过分析实际转子碰摩信号来验证该方法的有效性.

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