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5下载:
经验模态分析(EMD)的MATLAB计算算法,经验模态分析是机械振动分析领域的重要方法-Empirical mode decomposition (EMD) of the MATLAB computing method, empirical mode analysis is an important field of mechanical vibration analysis method
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小波包分析提取振动信号中的分解,系数重构特征频率,以及能量谱分析计算-Wavelet packet analysis to extract the vibration signal decomposition coefficient reconstruction of the characteristic frequency, and calculate the energy spectrum analysis
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对振动信号进行的EMD分解程序,学习振动的同学可以-Of the vibration signal of EMD decomposition process, students can learn a good look at the vibration
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matlab 傅里叶展开 波形分解 振动分析-matlab Fourier decomposition on waveform
Vibration analysis
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用ANSYS对模态分析中的振型进行分解的一个算例-Example an ANSYS modal analysis of vibration mode decomposition
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基于matlab的小波包分解应用于机械振动信号的故障分析-Used in failure analysis of mechanical vibration signals based on the Matlab wavelet packet decomposition
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提出了将信号进行相空间重构后再采用奇异值分解, 对分解后的主成分进行包络分析, 从而提取信号的隐含特
征的方法, 并将该方法应用于齿轮的局部故障振动特征信号的提取中。数值仿真实验结果表明, 该方法能有效提取强背景
信号及噪声中的弱冲击特征信号, 是一种有效的弱信号特征提取方法。采用该方法对齿轮振动信号进行故障特征提取与识
别, 结果与实际情况相符。-Signal implicit characteristic of phase space reconstruction, and th
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y=d2wavelet(x,Fs,level) does the 2nd order Daubechies Wavelet Transform of signal x with a sampling frequency Fs and the DWT is decomposition is done upto a level
It returns the matrix of all decompositions and the final approximations.
Instead
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一个小波包分解重构函数,用于振动信号的故障诊断-A wavelet packet decomposition and reconstruction functions for fault diagnosis of the vibration signal
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matlab程序 EMD分解,经本人测试非常好用,可用于振动信号分解,平稳或非平稳信号都可以。-EMD decomposition matlab program, after I test is very easy to use, can be used for vibration signal decomposition, stationary or non-stationary signal can be.
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小波包分解,重构轴承振动信号,Hilbert包络,FFT进行频谱分析,以获得轴承故障频率。-Wavelet packet decomposition, reconstruction of bearing vibration signal, Hilbert envelope, FFT spectrum analysis to obtain the bearing fault frequencies.
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局部均值分解Local Mean Decomposition 用于振动信号的自适应分解,获得若干分量,非常实用。-Local Mean Decomposition Local Mean Decomposition is used to the adaptive Decomposition of vibration signals, gain some weight, very practical.
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EMD是处理非线性、非平稳性信号的有效的新方法,本程序是振动信号EMD分解程序,可以把振动信号分解成多个IMF分量和一个残余量。-EMD is nonlinear, effective new method of non-stationary signals, this program is the vibration signal EMD decomposition process, the vibration signal can be decomposed into multiple co
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对一段振动信号emd分解后,求每个分量的峭度值,选取峭度最大的分量,求其包络谱,能够明显看出特征频率。-After a period of vibration signal emd decomposition, seeking kurtosis value of each component, the largest component of kurtosis, seeking its envelope spectrum, can obviously see that the characte
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液压泵振动信号的小波包分解以及功率谱分析,仿真信号的Hilbert谱以及边际谱;仿真信号的小波包能量计算-wavelet packet decomposition and power spectrum of vibration signals for piston pump Hilbert spectrum and marginal spectrum of stimulated signals
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希尔伯特振动分解MATLAB代码,hilbert vibration decomposition MATLAB code
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matlab在振动信号处理中的应用。通过matlab编程语言将复杂的振动信号通过算法进行消噪,信号分解与重构。-The application of matlab in vibration signal processing.Through the matlab programming language to deal with the complex vibration signal, by using algorithmde to de-noising, signal decompositi
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特征值分解(B级)
功能要求:
a) 输入一个对称正方矩阵A,从文本文件读入;
b) 对矩阵A进行特征值分解,将分解结果:即U矩阵、S对角矩阵输出至文本文件;
c) 将最小特征值对应的特征向量并输出至文本文件;
d) 验证其分解结果是否正确。
说明:矩阵特征值分解被广泛运用于土木工程问题的数值计算中,如可用于计算结构自振频率与自振周期、结构特征值屈曲问题等-Eigenvalue Decomposition (B grade)
Functional requiremen
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针对信号处理方面,该例子实现了希尔伯特振动分解的,(For signal processing, this example implements the Hilbert vibration decomposition.)
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