| 液压泵的轴承特征信号提取及故障诊断 |
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| 引用本文： | 诸葛起,季行健,路甬祥.液压泵的轴承特征信号提取及故障诊断[J].浙江大学学报(自然科学版 ),1990(2). |
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| 作者姓名： | 诸葛起 季行健 路甬祥 |
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| 作者单位： | 浙江大学流体传动及控制研究所
(诸葛起，季行健)，浙江大学流体传动及控制研究所(路甬祥) |
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| 基金项目： | 教委博士点基金，浙江大学流体传动及控制开放实验室基金 |
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| 摘 要： | 本文利用细化FFT分析和包络检测原理,检测蕴含于振动响应中的液压泵轴承故障特征。与传统的轴承故障检测技木相比,其优越性在于可以提取振动信号的高频能量中的低频调制信号,从而大大提高了故障特征信号的信噪比。关于轴承滚子点蚀故障的对比实验表明,包络分析是提取微弱低频调制信号的有效方法,尤其适于液压泵一类存在强烈动力噪声和其它振源干扰的场合。
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| 关 键 词： | 故障诊断 轴承 功率谱 |
Bearing Signature Extraction for Hydraulic Pump Diagnostics |
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| Zhuge Qi Ji Xingjiang Lu Yongxiang.Bearing Signature Extraction for Hydraulic Pump Diagnostics[J].Journal of Zhejiang University(Engineering Science),1990(2). |
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| Authors: | Zhuge Qi Ji Xingjiang Lu Yongxiang |
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| Affiliation: | Institute for Fluid Power Transmission and Control |
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| Abstract: | Envelope Analysis based on ZOOM-FFT is investigated in detail for extracting weak frequency information of the bearing so as to develop an applicable algorithm of bearing fault diagnostics. Compared with traditional bearing fault diagnosis method, the approach proposed in this paper can detect the low frequency modulated components from high frequency band. Signal-noise ratio is greatly increased. The experimental work on the fault of bearing rolling element detection proved that the Envelope Analysis is a powerful method for bearing diagnostics, especially suitable to the mechanical system(?) with strong vibration contamination, such as piston pump and vane pump. |
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| Keywords: | Fault diagnostics Bearing Power spectrum |
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