FFt

说明：  这是一部不错的MATLAB教程，拿出啦与大家分享了(This is a good tutorial of MATLAB。)

Normalized Cuts and Image Segmentation xp下的32位的绝对可以运行(Normalized Cuts and Image Segmentation xp under can run 32-bit absolute)

MATLAB中一些经典的算法汇总。聚类算法、概率算法、神经网络、模拟退火等算法(Some classic algorithms in MATLAB are aggregated. Clustering algorithm, probabilistic algorithm, neural network, simulated annealing algorithm and so on.)

Test MCC very powerfull!

对之前求取细通道内气泡长度和频率的程序进行修改，使之运算速度加快，(Before passage of fine bubbles strike length and frequency of the procedure to be modified, so that the operation speed,)

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)

《MATLAB 7[1].0编程基础基础》一书中的所有源程序。(" MATLAB 7 [1] .0 programming based on the basis of" one book, all the source code.)

非常方便的读写固定列宽的时间日期数据，读文件与存文件都是文本格式(Very convenient to read and write fixed column width of the time and date data, read the file and save files are text format)

bpsk 16 qam误码率分析,通过高斯白噪声，终端接收，通过分析了解16 am调制解调原理(this file is adout" bpsk 16 qam ",through the codes yuwill finish your duty)

用于仿真MM!排队模型，计算平均等待时间和到来的人数，并对每个人的等待时间绘图(Used to simulate the MM! Queuing model to calculate the average waiting time and the number of people coming, and everyone' s waiting time in drawing)