pwm1

这时一些关于matlab连续小波变换的程序代码，希望对学习matlab的人有用处(At this time about the continuous wavelet transform matlab code, people who want to learn useful matlab)

empirical formula with kaiser clc clear all fs=1000 fc=250 df=50 r=0.001 f=fc/fs dw=2*pi*(df/fs) a=-20*log(r) n=floor(((a-8)/(2.285*dw))+1) if a>50 b=0.1102*(a-8.7) elseif a>=21 && a<=50 b=0.5842*((a-21)^0.4)+0.07886*(a-21) elseif a<21 b=0.0 end w=kaiser(n,b) for i=1:n if i~=(n-1)/2 hd(i)= (2*f*sin((i-((n-1)/2))*2*pi*f))/((i-((n-1)/2))*2*pi*f) elseif i==(n-1)/2 hd(i)=2*f end end for j=1:n h(j)=w(j)*hd(j) end subplot(3,1,1), plot(w) subplot(3,1,2), plot(h) subplot(3,1,3), plot(h,n)

初步学习采样和重建信号。包括源程序和报告书。(Preliminary study of sampling and reconstruction of the signal. Including the source and report.)

Frequency analysis in matlab

说明：  麦克风阵列形成的波束beampattern图形，可调整麦克间距和信号带宽来得到需要的波束图(microphone array beam forming the beampattern graphics, Mike adjustable spacing and the signal bandwidth they need to beam map)

说明：  小世界网络生成,生成20个节点的小世界网络(small world network)

二维 有限元 三角形 插值积分 很不错(Dimensional finite element triangle Quadratures very good)

一个二维静电场，电位函数为φ（x, y），将正方形分成25个正方形网格。有16个内部网格点。假定16个网格点的初值都定为零，试用超松弛法确定16个内部网格点的电位值。(A two dimensional electrostatic field, the potential function for phi (x, y), the square into 25 square grid. There are 16 internal grid point. Assume that 16 mesh point of initial value at zero, trial overrelaxation method to determine the potential value of 16 internal grid point.)

编译好的Simulink-FuzzyPID模糊pid控制规则，通过对模糊规则的定义ki，kp，kd。(Compiled Simulink-FuzzyPID fuzzy PID control rules, through the definition of fuzzy rules Ki, KP, KD.)

载波生成的matlab代码，可以生成通信领域中经常需要的载波(Carrier generated by matlab code, can generate communications carrier often required)