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, . , , . 3.10, 3.11.

 

3.10 - -

 

Uo = 1; Um = 2; T = 1e-3;

Un = 1; Fn = 4e4;

Mf=500;

t=(0:1e-3:0.3)*1e-3;

Umod=cosinobn1(t,Um,T,Uo);

Psi=2*pi*Fn*t+Mf*1e-3*cumsum(Umod)';

Uf=Un*cos(Psi);

figure(1)

plot(t,Uf,t,Umod)

 

 

3.11 - -

 

, . 1024 ( 3.12).

 

K=1024; t=linspace(0,4*T,K);

df=1/(4*T);

Umod=cosinobn1(t,Um,T,Uo);

Psi=2*pi*Fn*t+Mf*cumsum(Umod)';

Ufh=Un*cos(Psi);

Sfh=fft(Ufh)/K;

figure(2)

plot(df*(1:512),abs(Sfh(1:512)))

 

3.12 -

. . 0.95 104 , 0.05 23.3 . 5% 95% , , .

 





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