simulatuation

相关器可以主要对不同的信号做相关检测，可以用于信号的提取，以及时间延迟的计算(Correlator can be mainly related to do different signal detection, can be used for signal extraction, as well as the time delay calculation)

clear all I=imread( lena.bmp ) figure imshow(I) I2=imrotate(I,-4, bilinear ) 逆时针旋转4度 figure imshow(I2) I3=fliplr(I) 垂直镜像 figure imshow(I3) I4=imresize(I,0.5, bilinear ) 缩小为原图的1/2 figure imshow(I4) A=double(I) 转换为double类型 计算7个不变矩 [nc,nr]=size(A) [x,y]=meshgrid(1:nr,1:nc) 得到网格 x=x(:) y=y(:) A=A(:) m.m00=sum(A) if m.m00==0 m.m00=eps end m.m10=sum(x.*A) m.m01=sum(y.*A) 计算均值 xmean=m.m10/m.m00 ymean=m.m01/m.m00 计算中心矩(li9_23.rar cm.cm00=m.m00 cm.cm02=(sum((y-ymean).^2.*A))/(m.m00^2) cm.cm03=(sum((y-ymean).^3.*A))/(m.m00^2.5) cm.cm11=(sum((x-xmean).*(y-ymean).*A))/(m.m00^2) cm.cm12=(sum((x-xmean).*(y-ymean).^2.*A))/(m.m00^2.5) cm.cm20=(sum((x-xmean).^2.*A))/(m.m00^2) cm.cm21=(sum((x-xmean).^2.*(y-ymean).*A))/(m.m00^2.5) cm.cm30=(sum((x-xmean).^3.*A))/(m.m00^2.5) im(1)=cm.cm20+cm.cm02 im(2)=(cm.cm20-cm.cm02)^2+4*cm.cm11^2 im(3)=(cm.cm30-3*cm.cm12)^2+(3*cm.cm21-cm.cm03)^2 im(4)=(cm.cm30+cm.cm12)^2+(cm.cm21+cm.cm03)^2 im(5)=(cm.cm30-3*cm.cm12)*(cm.cm30+cm.cm12)... *((cm.cm30+cm.cm12)^2-3*(cm.cm21+cm.cm03)^2)... +(3*cm.cm21-cm.cm03)*(cm.cm21+cm.cm03)... +(3*(cm.cm30+cm.cm12)^2-(cm.cm21+cm.cm03)^2) im(6)=(cm.cm20-cm.cm02)*((cm.cm30+cm.cm12)^2-(cm.cm21+cm.cm03)^2)... +4*cm.cm11*(cm.cm30+cm.cm12)*(cm.cm21+cm.cm03) im(7)=(3*cm.cm21-cm.cm03)*(cm.cm30+cm.cm12)... *((cm.cm30+cm.cm12)^2-3*(cm.cm21+cm.cm03)^2)... +(3*cm.cm12-cm.cm30)*(cm.cm21+cm.cm03)... *()

说明：  多项式拟合用于处理实验数据的一种有效方法，简单实用。并且举了一个例子三次拟合(Polynomial fitting of experimental data for processing is an effective method of simple and practical. And cited an example of three fitting)

simulation matlab machine synchrone a aimant permanent

本程序，对三维重建的结果调试已通过，得到很好的实验结果，方便大家学习。(This procedure, the results of three-dimensional reconstruction of debugging has passed, get a good result, we facilitate learning.)

神经网络控制器的matlab实现，已经上传，希望能给需要的同志一些帮助(The neural network controller matlab realize, has been uploaded, I hope to give comrades need some help)

Sayood K. Learning Programming Using MATLAB

optimal placement digial antenna

指数平滑法，一种数学建模的实用方法，对你的比赛，和应用很有帮助(Exponential smoothing，A good mathematical modeling tool, It is very helpful to your study MATLAB)

根据轮式机器人速度稳定控制系统，建立速度、电流双闭环控制系统。轮式机器人的速度与电流双闭环控制系统。(According to the speed stabilization control system of wheeled robot, the speed and current double closed-loop control system is established. Double Closed Loop Control System of Speed and Current for Wheeled Robot)