| 信息熵在导航传感器故障诊断中的应用研究 |
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| 引用本文： | 钱华明,朱明,陈亮.信息熵在导航传感器故障诊断中的应用研究[J].系统仿真学报,2010,22(Z1). |
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| 作者姓名： | 钱华明 朱明 陈亮 |
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| 作者单位： | 哈尔滨工程大学自动化学院,哈尔滨,150001 |
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| 摘 要： | 对组合导航系统中占主要地位的惯导系统进行故障诊断研究,给出了一种基于小波包能量熵的神经网络故障诊断方法。利用小波包分析原理对原始故障信号进行3层的小波包分解,并提取小波包能量熵,然后构造信号的小波包特征向量,以此向量作为故障样本对3层BP神经网络进行训练,实现智能化故障诊断。采用惯导系统中关键性器件陀螺仪进行仿真研究,仿真结果表明此方法可有效地检测故障且提高了精度。
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| 关 键 词： | 信息熵 小波包能量熵 神经网络 惯性导航 陀螺仪 故障诊断 |
Information Entropy for Fault Diagnosis of Inertia Navigation |
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| QIAN Hua-ming,ZHU Ming,CHEN Liang.Information Entropy for Fault Diagnosis of Inertia Navigation[J].Journal of System Simulation,2010,22(Z1). |
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| Authors: | QIAN Hua-ming ZHU Ming CHEN Liang |
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| Abstract: | To study the fault diagnosis of inertia navigation system which plays an important role in integrated navigation system, a new method of fault diagnosis based on wavelet packet-energy entropy (WP-EE) and neural network is presented. By using the theory of wavelet packet decomposition and reconstruction, the three layers wavelet packet decomposition of the original fault signal is performed and the wavelet packet-energy entropy is extracted .Then the eigenvector of wavelet packet of the signal is constructed... |
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| Keywords: | information entropy wavelet packet-energy entropy neural network inertia navigation gyro fault diagnosis |
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