| 陈松,陈立爱.经验模态分解和神经网络在滚动轴承故障诊断中应用研究[J].安徽建筑大学学报,2016,24(4):64-68 |
| 经验模态分解和神经网络在滚动轴承故障诊断中应用研究 |
| Research of Application of Empirical Mode Decomposition and Neural Network into Diagnosis of Rolling Bearing Fault |
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| DOI：10.11921/j.issn.2095-8382.20160414 |
| 中文关键词: 经验模态分解 神经网络 轴承 故障诊断 |
| 英文关键词: Empirical mode decomposition neural network bearing fault diagnosis. |
| 基金项目:安徽建筑大学校青年科研基金专项(2014XQZ02),安徽省博士后科研经费资助项目(2015B075),住房与城乡建设部科学技术计划项目(2014-K7-022),安徽高校自然科学研究重点项目(KJ2016A156) |
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| 中文摘要: |
| 针对滚动轴承故障振动信号的非平稳特征, 提出了一种基于经验模态分解的滚动轴承故障诊断方法，对采集的信号范围进行了筛选。利用经验模态分解将振动信号分解为多个平稳的固有模态函数。选取包含主要故障信息的IMF 分量分析其时域和频域特征。将时域信号特征量和频谱图峰值对应的频率归一化处理,输入Elman神经网络进行工作状态的自动判断。 |
| 英文摘要: |
| According to the non-stationary characteristics of vibration signals of rolling bearing fault, a kind of fault diagnosis method of rolling bearing based on empirical mode decomposition is put forward, and signal range is screened. With the empirical mode decomposition, original signal is decomposed into several smooth intrinsic mode functions. The IMF component containing main fault information is selected, and dominate features of the time domain and frequency are analyzed. The time domain signal characteristics and the corresponding spectrum peak frequency have been handled through normalized processing, and then they have been imported into Elman neural network for automatic judgment of the working state. |
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