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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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psnr_ssim_ergas
本代码主要用于处理后的图像质量评价，其评价指标综合为一个程序中，其中评价指标有SSIM,PSNR,ERGAS。程序使用matlab编程，根据自己的应用习惯做微调即可(This code mainly for image quality uation after treatment, the uation of a comprehensive program, including uation indicators SSIM, PSNR, ERGAS. Program using matlab programming, according to their own habits application can do fine tuning)
- 2016-04-07 17:21:50下载
- 积分：1
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LDA
一个LDA的算法，可以实现对实现基于LDA的人脸识别(An LDA algorithm, can achieve the realization of Face Recognition Based on LDA)
- 2010-07-02 09:47:34下载
- 积分：1
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PLL_simple
PLL simulator on MATLAB
- 2010-11-04 12:04:58下载
- 积分：1
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huise
gm.11一个简洁的初级学习小程序，希望大家指正，向大家学习(Gm.11a simple primary study of small procedures, we hope that the correction, to everybody study)
- 2012-06-16 12:32:28下载
- 积分：1
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bwlabel
用C语言编写MATLAB 函数， 主要用于DSP芯片， 后期可参考转化为汇编， 提高速度(Use the programming language C to write the MATLAB function, bwlabel )
- 2014-12-17 12:28:39下载
- 积分：1
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inandoutofmatlab
matlab文件输入输出命令,对输入输出命令的详细描述(in and out description of matlab)
- 2011-05-24 20:07:32下载
- 积分：1
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Home1
My Assignment It will help a lot so please DOwnload 08-0501.
- 2012-08-11 17:26:02下载
- 积分：1
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7
说明： 区域生长
区域生长的一个关键是选择合适的生长或相似准则， 大部分区域生长准则使用图像的局部性质。(A key growth region growing area is to select the appropriate growth or similar criteria, the local nature of most of the regional growth guidelines for using the image.)
- 2013-04-12 16:51:42下载
- 积分：1
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ica
ica工具包，包含基于峭度的ica算法，基于最大信噪比的ica算法等(failed to translate)
- 2013-05-04 15:59:10下载
- 积分：1
