MATLAB_Demystified-[Sality]

QPSK在MATLAB平台上的调制与解调(QPSK modulation and demodulation)

scFIG27 function for wavelet analysis

simulink model of buck, boost, and flyback converters in open and closed loop

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)

复杂网络中，度分布计算，函数，并绘制出度分布的分布图(Complex networks, distributed computing degree, function, and mapping the distribution of out-degree distribution)

初级的水下信号的处理，LFM信号时的速度和方位联合估计，以及阵列信号的方位判断程序。(Underwater signal processing method, position estimation.)

雷达信号的基本检测，雷达信号的基本检测流程matlab仿真(Radar signal detection)

基于遗传算法的解决两点之间最短路径问题（有向权值图最短路径问题）(Based on the shortest path between a genetic algorithm to solve the problem of two (shortest path problem to the weight chart))

说明：  采用离散的方式，实现的永磁同步电机有速度传感器矢量控制，(In a discrete manner, the permanent magnet synchronous motor has a speed sensor vector control,)

从网格划分软件Gambit读取2维网格的Matlab程序，来自《节点间断迦辽金方法》一书(Matlab program read from the meshing software Gambit two-dimensional grid, from the node discontinuous Galerkin method, " a book)