基于EEMD能量矩和改进量子粒子群神经网络的滚动轴承故障诊断
PDF下载 (502)闵文君,李国平,韩同鹏,项四通,赖文锋.基于EEMD能量矩和改进量子粒子群神经网络的滚动轴承故障诊断[J].宁波大学学报(理工版),2020,33(3):33-39.DOI:
Min Wenjun,Li Guoping,Han Tongpeng,Xiang Sitong,Lai Wenfeng.Rolling bearing fault diagnosis based on EEMD energy moment and improved quantum particle swarm optimization neural network[J].Journal of Ningbo University(Natural Science & Engineering Edition),2020,33(3):33-39.DOI:
| Title: | Rolling bearing fault diagnosis based on EEMD energy moment and improved quantum particle swarm optimization neural network |
| 作者: | 闵文君, 李国平, 韩同鹏, 项四通, 赖文锋 |
| Author(s): | Min Wenjun, Li Guoping, Han Tongpeng, Xiang Sitong, Lai Wenfeng |
| 关键词: | 滚动轴承; 故障诊断; 集合经验模态分解; 能量矩; 改进量子粒子群 |
| Keywords: | rolling bearing; fault diagnosis; ensemble empirical mode decomposition; energy moment; improved quantum particle swarm |
| 分类号: | TH133.3 |
| 文献标识码: | A |
| 摘要: | 针对滚动轴承故障振动信号的非线性和周期性冲击特征, 提出一种基于集合经验模态分解(Ensemble Empirical Mode Decomposition, EEMD)能量矩和改进量子粒子群神经网络的特征提取方法. 基于小波去噪对滚动轴承原始信号进行预处理, 对重构的故障信号进行EEMD并得到多个本征模态函数分量. 利用能量矩方法计算出所需分量的能量矩并归一化, 将归一化后的能量特征参数作为量子粒子群BP神经网络的参数输入, 根据加速度传感器信号实现滚动轴承故障诊断. 分别在不同转速(载荷)下采集驱动端轴承的振动信号, 获取200个训练样本和80个测试样本, 并建立故障诊断模型. 基于文中模型对实际滚动轴承数据进行诊断, 实验结果表明, 不同转速(载荷)下测试的80个样本故障诊断准确率达到100%. |
| Abstract: | In light of the nonlinear and periodic shock characteristics of rolling bearing fault vibration signals, a feature extraction method based on ensemble empirical mode decomposition (EEMD) energy moment and improved quantum particle swarm neural network is proposed. Based on wavelet denoising, the original signal of the rolling bearing is preprocessed, and the reconstructed fault signal is decomposed by EEMD to obtain multiple eigenmode function components. The energy moment of the required component is calculated by the energy moment method and is normalized. The normalized energy characteristic parameter is used as the parameter input of the quantum particle group BP neural network, and the rolling bearing fault diagnosis is accomplished with the acceleration sensor signal. The vibration signals of the drive end bearings are collected at different speeds (loads), 200 training samples and 80 test samples are acquired, and a fault diagnosis model is established. With this model, the actual rolling bearing data is diagnosed for case study. The experimental results show that the accuracy of 80 samples tested under different speeds (loads) may reach 100%. |
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| 备注/Memo: | 收稿日期:2019-12-05.宁波大学学报（理工版）网址:http://journallg.nbu.edu.cn/ 基金项目:国家自然科学基金（51705262）. 第一作者:闵文君（1995－）,男,安徽宣城人,在读硕士研究生,主要研究方向:机械振动控制、信号处理.E-mail:minwenjun51@163.com *通信作者:李国平（1967－）,男,湖北武穴人,教授,主要研究方向:精密加工、机械振动控制.E-mail:liguoping@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
