| 现代功率谱估计在设备故障诊断应用 |
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| 引用本文： | 李文超.现代功率谱估计在设备故障诊断应用[J].传感器世界,2012,18(2):25-29. |
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| 作者姓名： | 李文超 |
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| 作者单位： | 中北大学信息与通信工程学院仪器科学和动态测量重点实验室 030051 |
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| 摘 要： | 功率谱估计能给出被分析对象的能量随频率的分布情况,是信号处理中一个重要分支.参数模型法将信号看成是一个随机输入序列通过一个线性系统的输出,通过建立模型来估计信号的功率谱,有明显的物理意义,已经成为现代谱估计的重要方法,在对设备进行故障诊断中起了重要的作用.
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| 关 键 词： | 功率谱 参数模型法 信号处理 MatLab |
Application of modern power spectral estimation on malfunction diagnosis of equipments |
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| LI Wen-chao.Application of modern power spectral estimation on malfunction diagnosis of equipments[J].Sensor World,2012,18(2):25-29. |
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| Authors: | LI Wen-chao |
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| Affiliation: | LI Wen-chao (Key Laboratory of Instrumentation Science & Dynamic Measurement, North University of China, Taiyuan 030051, China) |
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| Abstract: | Power spectrum estimation is an important branch of signal processing which can show energy of the object analyzed changing with frequency distribution. Parametric model method treats the signals as the outputs of a linear system with a random sequence input, and establishes the model to estimate the signal power spectrum which has obvious physical meaning. It becomes an important method of modem spectral estimation, and plays an important role on diagnosing the working failures of the equipments. |
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| Keywords: | power spectrum parameter model method signalprocessing MatLab |
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