| 基于多点噪声分析的离心泵早期汽蚀故障诊断 |
| |
| 引用本文： | 周云龙 吕远征. 基于多点噪声分析的离心泵早期汽蚀故障诊断[J]. 振动与冲击, 2017, 36(7): 39-44 |
| |
| 作者姓名： | 周云龙 吕远征 |
| |
| 作者单位： | 东北电力大学,吉林省,吉林市,132012 |
| |
| 摘 要： | 提出了一种多点噪声分析法研究汽蚀故障下的离心泵噪声,总结其规律并应用到故障诊断中。将多个单指向性麦克风附着于泵体的不同部位采集信号,通过多种矩阵的奇异值分解提取高品质的水动力噪声,根据Lighthill声学理论,水动力噪声详细的反映着测点处的流场变化。为加快计算速度、降低内存,利用二代小波提取各点噪声能量谱,并将所有测点的敏感频带共同组成特征向量以训练BP神经网络。经诊断测试,多点噪声法快速、稳定且诊断成功率达到93.5%,证明比传统噪声诊断法更适合工业用途。
|
Incipient cavitations fault diagnosis for a centrifugal pump based on multi-position noise analysis |
| |
| ZHOU Yunlong,LV Yuanzheng. Incipient cavitations fault diagnosis for a centrifugal pump based on multi-position noise analysis[J]. Journal of Vibration and Shock, 2017, 36(7): 39-44 |
| |
| Authors: | ZHOU Yunlong LV Yuanzheng |
| |
| Affiliation: | 1.School of Energy Rescource and Mechanical Engineering,Northeast Electric Power University,Jilin 132012,China; 2.School of Automatic Engineering,Northeast Electric Power University,Jilin 132012,China |
| |
| Abstract: | |
| |
| Keywords: | centrifugal pumpcavitationshydrodynamic noisesingular value decomposition (SVD) second generation wavelet |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《振动与冲击》浏览原始摘要信息 |
|
点击此处可从《振动与冲击》下载全文 |
|
