| 运用小波包变换与能量算子的气阀故障特征提取 |
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| 引用本文： | 魏中青,马 波,么子云.运用小波包变换与能量算子的气阀故障特征提取[J].振动．测试与诊断,2011,31(1):50-54. |
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| 作者姓名： | 魏中青 马 波 么子云 |
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| 作者单位： | 1. 北京化工大学诊断与自愈工程研究中心北京,100029
2. 中石油北京天然气管道有限公司北京,100101 |
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| 基金项目： | 国家高技术研究发展计划("八六三"计划)资助项目 |
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| 摘 要： | 针对目前往复压缩机气阀故障诊断中存在的问题,提出了基于小波包变换与能量算子相结合的包络解调技术对其振动信号进行包络分析,解决了对信号包络解调前需要人为确定载波带对信号进行带通滤波的问题.并将其用于往复压缩机气阀的故障诊断,实例数据的分析表明,把包络信号的歪度值和峭度值作为特征指标较好地区分了气阀的不同故障,并且表现出抑噪特性.
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| 关 键 词： | 故障诊断 小波包 能量算子 包络 往复压缩机 |
| 收稿时间： | 2009/3/9 0:00:00 |
| 修稿时间： | 2009/5/21 0:00:00 |
Feature Extraction of Gas Valve Fault Using Wavelet Packet Transform and Energy Operator |
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| Wei Zhongqing,Ma Bo,Yao Ziyun,Li Xing,Jiang Zhinong.Feature Extraction of Gas Valve Fault Using Wavelet Packet Transform and Energy Operator[J].Journal of Vibration,Measurement & Diagnosis,2011,31(1):50-54. |
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| Authors: | Wei Zhongqing Ma Bo Yao Ziyun Li Xing Jiang Zhinong |
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| Affiliation: | Wei Zhongqing1,Ma Bo1,Yao Ziyun2,Li Xing1,Jiang Zhinong1 (1Diagnosis & Self-Recovery Engineering Research Center,Beijing Universityof Chemical Technology Beijing,100029,China)(2Petro China Natural Gas & Pipeline Company Beijing,100101,China) |
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| Abstract: | Aimed at the current reciprocating compressor valve fault diagnosis,an envelope demodulation method by using wavelet packet transform and energy operator was proposed.The method was applied to the fault diagnosis of gas valves of a reciprocating compressor and the skewness value and kurtosis value of envelope signal were used as the feature indicators.The results show the method is satisfactory. |
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| Keywords: | fault diagnosis wavelet packets energy operator envelopment reciprocating compressor |
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