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matlab数字滤波器，cic，hb，fir 滤波器 欢迎参考(Matlab digital filters, cic, hb, welcomed the reference filter fir)

采用有限控制体积法解一维热传导方程，程序简洁明了(Finite control volume method for solution of one-dimensional heat conduction equation, the program concise)

这是QAM信号和PSK信号产生程序，可以生成16-QAM,32-QAM,64-QAM和M进制psk信号。(This is PSK and QAM signals a process can generate 16-QAM ,32-QAM. 64-M and 229 QAM signals psk.)

说明：  matlab遗传算法解决车间调度问题程序代码(Shop scheduling genetic algorithms)

这是一本有关MATLAB的参考书，适合于使用MATLAB或正在打算使用MATLAB的读者(This is a reference book on MATLAB, suitable for use MATLAB or readers are going to use MATLAB)

MATLAB与通信仿真，有大量实例，非常有参考价值，文件为pdg格式，需用超星阅览器打开(MATLAB simulation and communications, has a large number of examples, a very valuable reference document for the PDG format, need to open browser Chaoxing)

输入不大于5位的整数，判断位数，并且正序和逆序输出(Enter an integer not more than 5 to determine the median, and the positive sequence and the reverse output)

1D求解麦克斯韦方程组，等离子体密度，电子密度，matlab程序，+作图(1D solving Maxwell' s equations, the plasma density, electron density, matlab program,+ mapping)

自由落体运动观测的三维卡尔曼滤波仿真，编程方式可改进(The 3D Calman filter simulation free fall movement observation, programming can be improved)

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)