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FILTROS-DIGITAIS
Digitals filters. Passby filters, lowpass and highpass filters.
- 2013-11-03 08:00:31下载
- 积分：1
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MATLAB-function-inquiry-handbook
matlab函数速查手册 全面覆盖MATLAB的各类应用；查询方便：提供功能索引和字母索引；实例丰富：每个函数均配有实例讲解。(MATLAB function inquiry handbook)
- 2011-12-12 10:59:03下载
- 积分：1
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newtonmethod
用matlab编写的牛顿迭代方法求解非线性方程组：数值分析中很经典的代码(a matlab code of newton method solve system of nonlinear equations)
- 2014-01-29 20:24:22下载
- 积分：1
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chengxu
小波变换进行变速箱故障诊断
首先将s1和s2信号时域谱（s1代表维修前的振动信号，s2代表维修后的振动信号），画出来进行对比，会发现s1信号的振动幅值会比较高；然后对s1和s2分别进行小波分解并画出各层的时域谱，只对比s1和s2分后的最高时域谱，s2更加的具有周期性，且幅值较小，s2周期性不够明显，且振动过于密集。分析完时域谱后开始分析频谱，首先对原信号s1和s2fft转换，得到频谱图，如图，然后再对小波分析后高频部分进行fft转换，做出频谱图。对比后我们发现，在f 2375HZ出（也就是齿轮的啮合频率），s1信号频谱幅值会有急剧的升高，然后，其谐波的幅值也会增大。所以可以推断出该维修前的增速箱的齿轮可能出现问题。(Gearbox fault diagnosis based on wavelet transform s1 and s2 first time domain signal spectrum (s1 behalf of the vibration signal before maintenance, vibration signal s2 representative of repaired), drawn comparison, you will find a signal s1 vibration amplitude will be higher then s1 and s2 respectively wavelet decomposition and draw the layers of time-domain spectrum to only a maximum time domain spectroscopy s1 and s2 points after, s2 is more cyclical and smaller magnitude, s2 cyclical enough obviously, and the vibration is too dense. End domain spectral analysis after the beginning of the spectrum analysis, the first of the original signal s1 and s2fft conversion to give the spectrum, as shown, and then after the high frequency part of wavelet analysis fft transformation to make spectrum. We found that after the comparison, at f 2375HZ out (i.e. the gear mesh frequency), there will be a sharp increase in the amplitude spectrum of the signal s1, and then, the amplitude of the ha)
- 2017-01-17 19:18:02下载
- 积分：1
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DOA_music
采用N=11的标准线阵，进行DOA估计，要求有两个信号。采用MUSIC算法(Standard linear array with N = 11, DOA estimation, requires two signals. Using the MUSIC algorithm)
- 2012-05-06 12:39:48下载
- 积分：1
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Basic_Concepts_in_Matlab
basics of matlab concepts
- 2010-07-12 00:17:03下载
- 积分：1
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Fourier
Matlab中关于实现傅里叶变换的书籍（英文版的）(Matlab Fourier transform on the realization of the books (in English))
- 2010-07-22 09:09:19下载
- 积分：1
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watermark
说明： 基于小波变换的数字图像水印算法的研究与实现论文(Wavelet-based Digital Image Watermarking Algorithm and Implementation Papers)
- 2010-04-06 18:11:25下载
- 积分：1
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tftb2002
matlab时频联合分析工具箱，包括平滑伪维格那-维利分布SPWVD等很多时频工具(matlabtfr)
- 2010-05-27 14:19:11下载
- 积分：1
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xiaobo
小波与熵的matlab代码，运行例程，需要的自己改一下(Wavelet and entropy)
- 2013-11-07 15:24:04下载
- 积分：1
