qenglun

用MATLAB画一个弯曲的圆柱 思想：把圆柱按轴线分若干段，在每个断面画圆，圆的法线就轴线的切向方向。柱面画若干平行于轴线的线条，其中用到平行单位矢量点积等于1，不平行的结果是[-1，1）。 (MATLAB painting with a cylindrical curved thinking: the cylinder axis by a number of sub-paragraph in each section drawcircle, round on the normal axis of the tangential direction. Painted a number of cylindrical axis parallel to the lines, which use a parallel unit vector point plot equal to 1, the result is not parallel to [-1,1).)

对于matlab初学者来说，想成为matlab编程高手的话，这本书正是你所需要的。(For the matlab beginners, want to become a master matlab programming, then this book is what you need)

利用PLSI算法自动对一个文档集进行聚类，需要调节聚类的维度K值，从而得到最大的likelihood(PLSI automatically using an algorithm for clustering document set needs to be adjusted to the dimension value of K clusters, to obtain the maximum likelihood)

说明：  利用遗传算法对BP神经网络进行了优化，避免陷于局部最优解。直接修改data数据(Genetic algorithm is used to optimize BP neural network to avoid falling into local optimal solution. Modify data data directly)

it is source file containf matlab

该代码是对人脸进行光照处理，先进行gamma变换，然后进行Dog双边滤波，然后进行灰度亮度的均衡。该方法能够有效提高光照变化的情况下的系统识别性能(The code is the human face of light treatment, the first for gamma conversion, and then Dog bilateral filtering, then the brightness of the gray balance. The method can effectively improve the illumination changes in the case of system identification performance)

Brushless motor control

基于粒子群优化算法（PSO）的类间方差估计（Otsu）(Based on Particle Swarm Optimization (PSO) of the between-class variance estimation (Otsu))

a gain calculator about semiconductor optical amplifier gain and ode method

《MATLAB数字信号处理》一书源码， 王彬主编，机械工业出版社。压缩文件包括书的ppt文件，和相关的例子源码("MATLAB digital signal processing," source code book, edited by Wang Bin, Machinery Industry Press. Zip file includes the book ppt files, source code and related examples)