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基于小波包样本熵的滚动轴承故障特征提取

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Indexed by:期刊论文

Date of Publication:2011-04-15

Journal:振动、测试与诊断

Included Journals:EI、PKU、CSCD、Scopus

Volume:31

Issue:2

Page Number:162-166

ISSN No.:1004-6801

Key Words:小波包分解;样本熵;滚动轴承;故障诊断

Abstract:将样本熵引入故障诊断领域,讨论了样本熵的性能和计算参数的选择.结合小波包分解和样本熵,提出了一种新的滚动轴承故障特征提取方法.首先对轴承振动信号进行小波包分解;然后对归一化能量最大的子带进行重构,计算重构信号的样本熵;最后通过样本熵评价故障状态.滚动轴承故障诊断实例验证了该方法的有效性.

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