小波包能谱构建综合评估函数的轴承退化评估

中国机械工程 ›› 2015, Vol. 26 ›› Issue (17): 2355-2368.

小波包能谱构建综合评估函数的轴承退化评估

杨帆;汤宝平;尹爱军

重庆大学机械传动国家重点实验室,重庆，400030

出版日期:2015-09-10 发布日期:2015-09-14
基金资助:
国家自然科学基金资助项目(51275546，51375514)；高等学校博士学科点专项基金资助项目(20130191130001)

Early Performance Degradation Assessment of Rolling Bearings Based on Comprehensive Evaluation Function Constructing by Wavelet Packet Energy Spectrum

Yang Fan;Tang Baoping;Yin Aijun

State Key Laboratory of Mechanical Transmission，Chongqing University,Chongqing,400030

Online:2015-09-10 Published:2015-09-14
Supported by:
National Natural Science Foundation of China（No. 51275546，51375514）;Research Fund for the Doctoral Program of Higher Education of China（No. 20130191130001）

摘要/Abstract

摘要：

针对传统的时域、频域特征不能明显地表征滚动轴承的早期退化特征的问题，提出了一种小波包能量谱结合主成分分析构建综合评估函数的滚动轴承早期性能退化评估方法。该方法以采集到的轴承正常工作时的振动信号作为训练样本，对样本进行小波包能量谱计算，得到高维特征向量;再利用主成分分析方法降维并建立综合评估函数对早期性能退化区的数据进行判断。运用实测的滚动轴承全寿命实验数据进行检验，结果表明该方法能实现对滚动轴承早期性能退化的评估。

关键词: 小波包能量谱, 主成分分析, 早期退化评估, 综合评估函数

Abstract:

The traditional time-frequency characteristics was not obvious in the early degradation extraction of the rolling bearings so this paper put forward a method based on wavelet packet energy spectrum in combination with principal component analysis for the early degradation extraction.First using normal signal data the wavelet packet energy spectrum was acquireal, then the principal component analysis was used to achieve dimension reduction for the high dimensional feature vector. Finally through the principal component analysis the comprehensive evaluation function was constructed,which was used to achieve the early degradation extraction of the rolling bearings.

Key words: wavelet packet energy spectrum;principal component analysis;early degradation assessment, comprehensive evaluation function

中图分类号:

TP391
TH132

杨帆, 汤宝平, 尹爱军. 小波包能谱构建综合评估函数的轴承退化评估[J]. 中国机械工程, 2015, 26(17): 2355-2368.

Yang Fan, Tang Baoping, Yin Aijun. Early Performance Degradation Assessment of Rolling Bearings Based on Comprehensive Evaluation Function Constructing by Wavelet Packet Energy Spectrum[J]. China Mechanical Engineering, 2015, 26(17): 2355-2368.

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http://www.cmemo.org.cn/CN/Y2015/V26/I17/2355

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