ch4_fit

数学建模的题目解析，胡乱拿来给大家分享，希望能对大家有帮助(The subject of mathematical modeling analysis, to be used indiscriminately to share, I hope you can help)

说明：  Smith原图 可以根据你输入的数据画出相应的Smith图(Smith Original data can be drawn based on your input corresponding Smith chart)

通过Matlab编程，经过提取特征参数与模板对比，可以识别0-9十个数字。(By Matlab programming, after extracting characteristic parameters compared with the template, you can identify 0-9 ten numbers.)

基于模糊集的图像增强算法研究。单层次图像模糊增强，matlab源码，已通过测试。(Image enhancement algorithm based on fuzzy sets in. Single-level image fuzzy enhancement, matlab source code, has been tested.)

通过对输入ISBN进行演算.从而得出其真伪信息(Input to calculations by ISBN. To arrive at the authenticity of the information)

说明：  求瞬时频率必不可少，MATLAB系统不自带的，下载后放在MATLAB到toolbox，然后在EMD文件夹下，更新MATLAB路径即可。运行emd即可出现频谱分析图。(It is necessary to find the instantaneous frequency. The MATLAB system does not come with it. After downloading, it is placed in the MATLAB to toolbox. Then, under the EMD folder, the MATLAB path can be updated. The spectrum analysis diagram can appear when EMD is run.)

load flow newton rapson

基于simulink的三相PLL锁相环仿真,可以直接使用(Three phase PLL phase lock simuliation，it can be used directly)

INDUCTION MOTOR and Inverter fed Voltrag with MLI commande MAX STEP SIZE : 0.00001

数值计算中的拟合方法 MATLAB程序 附带注释 亲测可用(linear method)