| 采用符号序列Shannon熵的机器信息提取方法 |
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| 引用本文： | 赵建华,张雨.采用符号序列Shannon熵的机器信息提取方法[J].武汉理工大学学报(交通科学与工程版),2009,33(2). |
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| 作者姓名： | 赵建华 张雨 |
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| 作者单位： | 南京工程学院车辆工程系,南京,211167 |
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| 摘 要： | 讨论了将时间序列转化为符号序列,即信号粗粒化问题,给出二进制符号化和角区间符号化2种规则,得到了二进制符号化规则下的符号序列Shannon熵计算方法.对于汽油机瞬态排放信号、柴油机机身振动信号、转子轴振动信号,采用Shannon熵提取了信号特征,结果表明描述符号序列总体特征的SHannon熵能够便捷地反映机器的运行状况.
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| 关 键 词： | 符号序列分析 Shannon熵 机器 特征提取 |
Extracting Machine Information by Shannon Entropy of Symbolic Series |
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| Zhao Jianhua,Zhang Yu.Extracting Machine Information by Shannon Entropy of Symbolic Series[J].journal of wuhan university of technology(transportation science&engineering),2009,33(2). |
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| Authors: | Zhao Jianhua Zhang Yu |
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| Institution: | Department of Mechanical Engineering;Nanjing Institute of Technology;Nanjing 211167 |
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| Abstract: | The problem of how to translate a time series into symbolic series,which means signal coarse-grained,is discussed.The symbolizing regulations of binary and angle section are given.The method of calculating symbolic series Shannon entropy under binary symbolizing regulation is also introduced.The signal characteristics,which are in the gasoline-engine transient emission,diesel-engine block vibration and rotor shaft vibration,are extracted base on the Shannon entropy.The results indicate that the Shannon entr... |
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| Keywords: | symbolic series analysis Shannon entropy machine characteristic extracting |
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