power-electronics-and-systems

Fourier transform and DFT (Fourier transform)

说明：  基于SVM和混沌理论的关于水质预测的matlab仿真的程序，程序里面有详细的说明。是我的毕业设计，希望大家有用。(Based on SVM and Chaos Theory on the water quality prediction matlab simulation program, the program which are described in detail. Is my graduation project I hope you useful.)

a. 熟悉MATLAB软件的用户环境，掌握其一般目的命令和MATLAB数组操作与运算函数(a. familiar with the MATLAB software, user environment, control its general purpose command and MATLAB array manipulation and calculation functions)

天波超视距雷达系统仿真(多波束形成)，代码在paper中，而且给出了详细的说明，能够更好理解田博超市距雷达的工作原理(Horizon radar system simulation (multi-beam forming), the code in the paper, but also gives a detailed description, to better understand the field Bo supermarket works from the radar)

用matlab实现在midi音频中的隐写过程(Matlab achieve midi audio steganography)

无网格法(mlpg),matlab代码，悬臂梁可用(The meshless method (MLPG), the matlab code, the cantilever beam can be used)

Kalman滤波小程序，可对kalman滤波进行简单的演示说明。(Kalman filtering of small procedures, can be simple kalman filtering demo description.)

用增广最小二乘法进行单输入单输出系统的参数辨识，输入采用幅度为1的4阶伪随机序列(Extended least squares method parameters identification of single-input single-output system, enter using the amplitude of a 4-order pseudo-random sequence)

如上图所示，定向耦合器由完全相同的直波导与弯曲波导构成，波 导芯为宽高比相同（均为 a） 的正方形， 其工作波长，波导材料 对 TE 模式的折射率，及圆弧形弯曲波导的半径 r 等参数如图所 示，若波长为 1550 nm， 归一化光功率为 1 的光波从直波导输 入，请选择适当的满足单模工作的波导宽度 a， 然后给出从圆形弯 曲波导输出的归一化光功率 P4与两波导边缘的间距 d(Directional coupler by the same straight and curved waveguides constituting the waveguide, waves Conducting core is the same aspect ratio (are a) square, its operating wavelength, the waveguide material The refractive index of the TE mode and the arc-shaped curved waveguide of radius r and other parameters as shown Shown, if the wavelength of 1550 nm, normalized optical power a light straight waveguide input In, the appropriate work to meet the single-mode waveguide width a, and then is given a circular bend Curved waveguide output normalized optical power P4 and two edges of the waveguide spacing d)

Matlab code with GUI for identification of VGC signals (FAX, Voice, VFT etc.)