| 递归图和近似熵在设备故障信号复杂度分析中的应用 |
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| 引用本文： | 吕勇,徐金梧,李友荣.递归图和近似熵在设备故障信号复杂度分析中的应用[J].机械强度,2006,28(3):317-321. |
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| 作者姓名： | 吕勇 徐金梧 李友荣 |
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| 作者单位： | 1. 机械传动与制造工程湖北省重点实验室,武汉,430081
2. 北京科技大学,机械工程学院,北京,100083 |
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| 基金项目： | 高等学校博士学科点专项科研项目;湖北省重点实验室基金;湖北省自然科学基金 |
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| 摘 要： | 将一维时间序列采用相空间重构算法将其扩展到高维相空间中，通过研究时间序列在高维空间中的邻近点分布规律和运动特点，提出采用递归图和近似熵获取原始时间序列的动力学行为的方法。对递归图受噪声的影响，近似熵的数值稳定性进行研究，结果表明两种算法在较短的数据集下就能有效地对信号的复杂度进行描述。同时将近似熵和递归图用于设备振动信号的复杂度描述，对两组不同的信号的递归图和近似熵进行比较，得出的结论与实际相符。
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| 关 键 词： | 递归图 近似熵 相空间重构 故障诊断 |
| 收稿时间： | 2004-08-02 |
| 修稿时间： | 2004-08-022004-11-15 |
APPLICATION OF RECURRENCE PLOT AND APPROXIMATE ENTROPY ON COMPLEXITY ANALYSIS OF MACHINERY FAULT SIGNAL |
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| LU Yong,XU JinWu,LI YouRong.APPLICATION OF RECURRENCE PLOT AND APPROXIMATE ENTROPY ON COMPLEXITY ANALYSIS OF MACHINERY FAULT SIGNAL[J].Journal of Mechanical Strength,2006,28(3):317-321. |
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| Authors: | LU Yong XU JinWu LI YouRong |
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| Affiliation: | 1 .Mechanical Transmission and Manufacture Engineering Key Laboratory of HuBei Province, Wuhan 430081, China;2. College of Mechanical Engineering, University of Science and Technology, Beijing 100083, China |
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| Abstract: | One dimension time series is extended to high dimension phase space by using phase space reconstruction algorithm. By studying the distribution rule and movement characteristic of neighborhood points of time series in high dimension. The method of recurrence plot and approximate entropy used for getting the dynamics behavior of original time series were proposed. The influence of noise on recurrence plot and numerical calculation stability of approximate entropy method are studied. The results show that the two methods can depict the complexity of signal effectively. Approximate entropy and recurrence plot are used for characterizing complexity analysis of machinery fault signal, the approximate entropy and recurrence plot of two different signals are compared, The calculation results are consistent with the fact. |
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| Keywords: | Recurrence plot Approximate entropy Phase space reconstruction Fault diagnosis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
