kongjianpinghua

说明：  （1）应用9×9的窗口对上述图象进行随机抽样，共抽样200块子图象； （2）将所有子图象按列相接变成一个81维的行向量； （3）对所有200个行向量进行KL变换，求出其对应的协方差矩阵的特征向量和特征值，按降序排列特征值以及所对应的特征向量； （4）选择前40个最大特征值所对应的特征向量作为主元，将原图象块向这40个特征向量上投影，所获得的投影系数就是这个子块的特征向量。 （5）求出所有子块的特征向量。 ((1) the application of 9 × 9 window of these images at random, a total sample of 200 sub-image (2) all sub-images according to out-phase into a 81-dimensional row vector (3) all 200 lines for KL transform vector, derived its corresponding covariance matrix of eigenvectors and eigenvalues, in descending order by eigenvalue and the corresponding eigenvector (4) a choice to 40 corresponding to the largest eigenvalue eigenvector as the PCA, the original image block to the 40 feature vectors on the projection, the projection coefficients obtained by this sub-block eigenvector. (5) calculated for all sub-block eigenvector.)

Inverted pendulum examples, matlab program

应用ansoft hfss模拟微带传输线经典例题 (Simulation of microstrip transmission line classic example)

in this folder contains the import the picture and how to find the effects. how to read the image and how to show the images.

功率控制在CDMA移动通信系统中的作用 (The role of power control in a CDMA mobile communication system)

循环谱估计，能画出２维图，也能在某特定循环频率下画出１维图(Cyclic spectrum estimation, can draw 2 d figure, also can draw slices under a cyclic frequency)

describe the Photovoltaic system with PI controller

一种用Newton-Rapson Method来计算能量的Matlab code(Newton-Rapson Method to determine the slack bus power( 3 buses)/)

Costas环是用来解调双边带抑制载波信号的,也是二相或四相移相键控信号解调的专用环路(Costas loop for demodulating the double sideband suppressed carrier signal, two-phase or four-phase shift keying signal demodulation dedicated loop)

直流伺服电机用MATLAB实现的源代码，伺服系统由具有位置反馈、速度反馈和电流反馈的三闭环结构组成本控制系统采用模糊和PID复合控制，在小偏差时转化为P ID控制，这样就获得了比纯模糊控制更高的稳态精度，有比P ID控制更快的动态响应、更小的超调量。(DC servo motor to achieve with the MATLAB source code, by a position feedback servo system, the speed feedback and current feedback loop structure composed of three of the control system using fuzzy and PID compound control, in a small deviation into the P ID control, so that access to higher than the pure fuzzy control steady-state accuracy, faster than P ID control the dynamic response, smaller overshoot.)