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Raspberry Pi 的代码
chap10_6s.m
function [sys,x0,str,ts] = spacemodel(t,x,u,flag)
switch flag,
case 0,
[sys,x0,str,ts]=mdlInitializeSizes;
case 1,
sys=mdlDerivatives(t,x,u);
case 3,
sys=mdlOutputs(t,x,u);
case
chap10_1s.m
function [sys,x0,str,ts] = spacemodel(t,x,u,flag)
switch flag,
case 0,
[sys,x0,str,ts]=mdlInitializeSizes;
case 3,
sys=mdlOutputs(t,x,u);
case {2,4,9}
sys=[];
otherwise
erro
chap10_5s.m
function [sys,x0,str,ts] = spacemodel(t,x,u,flag)
switch flag,
case 0,
[sys,x0,str,ts]=mdlInitializeSizes;
case 3,
sys=mdlOutputs(t,x,u);
case {2,4,9}
sys=[];
otherwise
erro
chap3_10plot.m
clear all;
close all;
L1=-pi/6;
L2=pi/6;
L=L2-L1;
T=L*1/1000;
x=L1:T:L2;
figure(1);
for i=1:1:3
gs=-[(x+pi/6-(i-1)*pi/6)/(pi/12)].^2;
u=exp(gs);
hold on;
plot(x,u);
end
xlab
gausamp.m
function[g1,g2]=gausamp(m,sgma)
if nargin==0,
m=0;sgma=1;
elseif nargin==1,
sgma=m;m=0;
end;
u=rand;
z=sgma*(sqrt(2*log(1/(1-u))));
u=rand;
g1=m+z*cos(2*pi*u);
g2=m+z*sin(2*pi*u);
gausamp.m
function[g1,g2]=gausamp(m,sgma)
if nargin==0,
m=0;sgma=1;
elseif nargin==1,
sgma=m;m=0;
end;
u=rand;
z=sgma*(sqrt(2*log(1/(1-u))));
u=rand;
g1=m+z*cos(2*pi*u);
g2=m+z*sin(2*pi*u);
cw1.m
%discrete-time forier trasnform computation
%read in the desired lenght dtft
k = 255
%seat in numerator and denumerator coefficiencs
num =[0.0518 -0.1553 0.1553 0.0518]
den =[1 1.282 1.0388 0.34
a_filter_design.m
% Design filter by specifying delay in units and
% looking at mag and phase response
% Good default values for fft_size = 128 and num_carriers = 32
delay_1 = 6; % 6
attenuation_1 = 0.35; %
sns_fur_ser.m
%periodic signal
t=[-8 -8 -6 -6 0 0 2 2 8 8 10 10];
x=[0 1 1 0 0 1 1 0 0 1 1 0];
% figure(1);
subplot(2,1,1),plot (t,x);
axis ([-10 12 -1.5 1.5]);
xlabel('timt (t) -t');
ylabel('x(t)');
titl
chap3_10plot.m
clear all;
close all;
L1=-pi/6;
L2=pi/6;
L=L2-L1;
T=L*1/1000;
x=L1:T:L2;
figure(1);
for i=1:1:3
gs=-[(x+pi/6-(i-1)*pi/6)/(pi/12)].^2;
u=exp(gs);
hold on;
plot(x,u);
end
xlab