李宏坤   

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Language:English

Paper Publications

Title of Paper:基于EEMD的柴油机缸套磨损故障诊断

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Date of Publication:2013-01-15

Journal:大连理工大学学报

Included Journals:PKU、ISTIC、CSCD、Scopus

Volume:53

Issue:1

Page Number:71-75

ISSN No.:1000-8608

Key Words:总体经验模态分解;柴油机;气缸套;磨损;故障诊断

Abstract:针对柴油机缸套磨损故障诊断问题,在实车上测试了柴油机机体振动信号,应用经验模态分解(EMD)对不同磨损状态下的柴油机机体振动信号进行了分析,然而,EMD存在的模态混叠问题使其难以获得准确的基本模式分量(IMF).为此引入基于总体经验模态分解(EEMD)的改进的局域波分析方法,利用EEMD获取无模式混淆的IMF,通过Hilbert边际谱分析信号能量随瞬时频率的变化特征.工程实测分析结果验证了应用该方法进行柴油机缸套磨损故障诊断的有效性.

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