PWM-parameter-tuning

boost switching converter allow the transformation of DC energy to choped energy

说明：  计算香浓信息熵，方便快捷的matlab代码，可以简单直接调用(Calculated Shannon information entropy, convenient matlab code can be simple and direct calls)

comsol mytihpysics最新版4.3a中射频模块中关于微波加热的源码(in the the comsol mytihpysics latest version 4.3a RF module microwave heating source)

Instant Vote Collecton

电力系统节点导纳矩阵的形成，在excel中输入对应的阻抗数据，通过matlab生成对应的阻抗矩阵Y阵(Forming a power system node admittance matrix, the input impedance of the corresponding data in excel, and generate the corresponding impedance matrix Y matrix by matlab)

本程序是matlab写的基于最小交叉熵的图象分割，处理速度快，分割质量好。(This procedure is written in matlab minimum cross-entropy-based image segmentation, processing speed and good quality segmentation.)

现有一个信号：x(n)=1+cos(π*n/4)+ cos(2*π*n/3)设计及各种数字滤波器以达下列目的： 低通滤波器，滤除cos(2*π*n/3) 的成分，即想保留的成分为1+cos(π*n/4) 高通滤波器，滤除1+cos(π*n/4) 的成分，即想保留的成分为cos(2*π*n/3) 带通滤波器，滤除1+cos(2*π*n/3) 的成分，即想保留的成分为cos(π*n/4) 带阻滤波器，滤除cos(π*n/4) 的成分，即想保留的成分为1+cos(2*π*n/3) 1. 用MATLAB命令butterord求除滤波器的阶数,用命令butter设计各滤波器；画出滤波器幅度和相频相应 取各滤波器的系统函数H(z)。 (an existing signal : x (n) = a cos (* n/4) cos (2** n/3) design and digital filter to achieve the following objectives : low-pass filter, filter cos (2** n/3) the ingredients that want to retain an element of a cos (* n/4) high-pass filter, a filter cos (* n/4) components, namely to retain the element of cos (2** n/3) band-pass filter , a filter cos (2** n/3) components, namely to retain the element of cos (* n/4) band stop filter, the filter cos (* n/4) components, namely to retain the ingredients for a cos ( 2** n/3) 1. MATLAB order butterord except for the band Filter, using the order of the filter design butter; paint Filter magnitude and phase frequency of the corresponding filter system function H (z).)

变换编码的matlab实现，主要有DCT编码等(Matlab implementation Transform Coding )

功率谱估计的各种方法的matlab代码 包括AR模型，ESPRIT,周期图谱，MUSIC，PISARENKO等方法(Power spectrum estimation method matlab code, including the method of AR model, ESPRIT, the cycle map, the MUSIC, PISARENKO etc.)

NCO 数字压控振荡器的MATLAB仿真程序 程序包含2中模拟NCO的方法 其中第二种方法使用CORDIC算法产生 基准频率信号(The NCO digital voltage-controlled oscillator, the MATLAB simulation program program contains 2 to simulate the NCO in which the second method uses the CORDIC algorithm to generate the reference frequency signal)