| 经验模式分解在汽轮机局部碰摩故障信号分析中的应用 |
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| 引用本文： | 王翔,朱波,王金平.经验模式分解在汽轮机局部碰摩故障信号分析中的应用[J].南京工程学院学报(自然科学版),2009,7(2):19-24. |
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| 作者姓名： | 王翔 朱波 王金平 |
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| 作者单位： | 1. 南京工程学院能源与动力工程学院,江苏,南京,211167
2. 中电国际芜湖发电厂,安徽,芜湖,241009 |
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| 基金项目： | 南京工程学院科研基金 |
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| 摘 要： | 采用经验模式分解（Empirical Mode Decomposition，简称EMD）方法对汽轮机转子局部碰摩振动信号进行分解，实现碰摩、噪声和背景信号的分离，从而提取局部碰摩振动信号的故障特征．分析结果表明，对具有局部碰摩故障的汽轮机振动信号进行EMD分解得到的内蕴模态函数（IMF）具有明显的碰摩特性．EMD方法可以有效地应用于汽轮机转子局部碰摩故障诊断中．
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| 关 键 词： | EMD 汽轮机组 局部碰摩 故障诊断 |
Application of Empirical Mode Decomposition to Local Rub-impact Fault Diagnosis in Turbine Unit |
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| WANG Xiang,ZHU Bo,WANG Jin-ping.Application of Empirical Mode Decomposition to Local Rub-impact Fault Diagnosis in Turbine Unit[J].Journal of Nanjing Institute of Technology :Natural Science Edition,2009,7(2):19-24. |
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| Authors: | WANG Xiang ZHU Bo WANG Jin-ping |
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| Institution: | 1.School of Energy and Engineering;Nanjing Institute of Technology;Nanjing 211167;China 2.China Power International Wuhu Power Plant;Wuhu 241009;China |
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| Abstract: | Empirical Mode Decomposition(EMD) was applied to local-impact fault diagnosis for turbine unit rotor system and to the separation of rub-impact vibration signals so as to separate rub-impact,noise and background signals.And the fault feature of vibration signal of a rotor system with local rub-impact fault was extracted.The results show that the intrinsic mode functions of the vibration signal of turbine unit with local rub-impact fault separated by EMD are characterized as rubbing.Therefore,EMD method can ... |
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| Keywords: | EMD |
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