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旋转矩阵和四原数之间的转换 用于坐标系之间的相互转换(Rotation matrix and the number of conversions between the original four)

matlab必备函数 初级入门，想学MATLAB的快来下载吧(essential function matlab primary entry, want to learn MATLAB' s Come download it)

频谱估计Automatic Spectral Analysis-Matlab code(Accurate estimates of the autocorrelation or power spectrum can be obtained with a parametric model (AR, MA or ARMA). With automatic inference, not only the model parameters but also the model structure are determined from the data. It is assumed that the ARMASA toolbox is present.)

说明：  基于直流潮流法的IEEE-30节点潮流计算(Power Flow Calculation of IEEE-30 Nodes Based on DC Power Flow Method)

vc 和 matlab 混合编程例程，已通过测试(vc and matlab mixed programming routines, has been tested)

说明：  BPPID程序 刘金坤 先进pid控制matlab仿真(BPPID pid control procedures Liu Jinkun advanced simulation matlab)

此matlab程序可用来计算mie散射各项参数，计算时需首先输入几个参数，大家可看看程序，然后就懂了(The matlab calculation mie scattering is used to the parameters)

matlab 可视化 微分方程 算法 超越方程 科学计算(matlab algorithm visualization differential equations beyond scientific computing)

声子晶体的源程序：圆柱形散射体呈正三角排列的Ｚ模程序(Phononic crystal source: cylindrical scattering takes the shape of the Z mode is triangular arrangement of the program)

数字信号处理中的时域抽样定理，作为初学者自己编写的，绝对正确，有详细的推导(Digital signal processing in the time domain sampling theorem, as a beginner I have written, absolutely right, there is a detailed derivation)