| 小波变换的齿轮泵故障分析 |
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| 引用本文： | 杨明轩.小波变换的齿轮泵故障分析[J].电子科技大学学报（自然科学版）,2007,36(4):805-808. |
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| 作者姓名： | 杨明轩 |
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| 作者单位： | 1.电子科技大学电子工程学院 成都 610054; |
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| 摘 要： | 通过对齿轮油泵结构、性能的分析,以泵在正常运行和不同的故障状态下输出压力为信号,提出了基于小波变换的方法来提取和分离输出压力信号,并利用小波分解的方法诊断输出压力信号中包含的故障信息。以此对常用齿轮泵作仿真和试验,所呈现的压力信号三层小波分解系数均不相同,而第三层小波分解系数的差异尤其明显。因此,可利用第三层小波分解系数有效地诊断或甄别齿轮泵运行的状态和隐匿的故障,有利于掌握诊断的主动性,具有较强的实用性。
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| 关 键 词： | 故障分析 齿轮泵 信号处理 小波变换 |
| 收稿时间： | 2006-04-19 |
| 修稿时间： | 2006-04-19 |
A Wavelet-Based Method of Fault Analysis for Gear Pump |
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| YANG Ming-xuan.A Wavelet-Based Method of Fault Analysis for Gear Pump[J].Journal of University of Electronic Science and Technology of China,2007,36(4):805-808. |
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| Authors: | YANG Ming-xuan |
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| Affiliation: | 1.School of Electronic Engineering,University of Electronic Science and Technology of China Chengdu 610054;2.Depantment of Electronic Engineering,Nan Chong Vocational Technical College Nanchong Sichuan 637000 |
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| Abstract: | Based on the analysis of gear pump structure and capability, the wavelet transform method is proposed to detect the fault information in the pressure signal from the outlet port of the pump. According to simulation, the third level wavelet coefficients decomposed from the pressure signal in fault state are significantly different from those in normal state and can be used to effectively diagnose whether the working state of gear pump is normal or not. The results show that the wavelet transform is a practical method for fault analysis of gear pump. |
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| Keywords: | fault analysis gear pump wavelet coefficient wavelet transform |
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