Nonlinear-equations-NL

三层平板光波导，计算有效折射率，求解波导色散,(Three planar waveguides, calculate the effective refractive index of the waveguide dispersion solution,)

更具已知数据，来实现预测环境污染，准确度很高(Prediction of environmental pollution)

卡尔曼滤波matlab代码，适合初学者，注释详细( Kalman filter matlab code)

学习并找到降噪方法，对语音信号背景噪声做处理，使得声音更清晰。(The background noise is the most common factor degrading the quality and intelligibility of speech in recordings. Spectral subtraction can lower the noise level without affecting the speech signal quality. In this paper, we have studied and implemented to reduce the background noise of the voice signal, and to make improvements to reduce the background noise of the experiment. Not only with the spectral subtraction of the noisy signal of the transformation, we improve the traditional spectral subtraction based on the introduction of the parameters, by adjusting the parameters(α、β、γ) to achieve better enhancement.)

边缘预测提出了一种基于预测的、有一定自适应性的边缘检测方法。介绍了其原理和算法实现过程。通过计算两个相邻像素的灰度值的均值、均方差和梯度来预测下一个像素的灰度值,比较预测值和真实值来判断下一个像素是否是边界点。通过与现有同类算法的比较,证明了该算法的优越性(A predictive and adaptive edge detection method is proposed. The principle and implementation process of the algorithm are introduced. The gray value of the next pixel is predicted by calculating the mean, mean square deviation and gradient of the gray value of the two adjacent pixels. The prediction value and the real value are compared to determine whether the next pixel is a boundary point. The superiority of this algorithm is proved by comparing with the existing similar algorithms.)

说明：  网络化控制系统的切换系统的非稳定性与稳定性的仿真分析(switched system stability)

说明：  MATLAB缺陷检测系统 该课题为基于形态学的缺陷检测，素材采用的是光伏板缺陷。通过灰度，二值化，边缘检测，形态学，开闭运算，去除小面积干扰等方法，判断出缺陷所在，定位，并且框出，且计算出各个块面积。配有一个人机交互界面，把缺陷个数，面积等分别显示到GUI界面上。(Matlab defect detection system This topic is based on the morphological defect detection, the material is photovoltaic board defect. Through gray level, binarization, edge detection, morphology, opening and closing operation, small area interference removal and other methods, the defects are identified, located, framed, and the area of each block is calculated. Equipped with a personal computer interface, the number of defects, area, etc. are displayed on the GUI interface.)

TransfoSat3limb_BH2Sat.m ,功率电子领域matlab仿真文件，已经验证过，程序运行正常(TransfoSat3limb_BH2Sat.m, power electronics matlab simulation files have been verified, the program runs correctly)

maze solution. it is a solution for maze problem with matlab code. in this solution I used very simple functions and it is easy for everyone.

一本介绍MATLAB数组操作的技巧和窍门的经典图书，里面很多技巧和窍门都很实用，编写matlab代码的时候的工具书(the title of the book "MATLAB array manipulation tips and tricks")