Administratie | Alimentatie | Arta cultura | Asistenta sociala | Astronomie |
Biologie | Chimie | Comunicare | Constructii | Cosmetica |
Desen | Diverse | Drept | Economie | Engleza |
Filozofie | Fizica | Franceza | Geografie | Germana |
Informatica | Istorie | Latina | Management | Marketing |
Matematica | Mecanica | Medicina | Pedagogie | Psihologie |
Romana | Stiinte politice | Transporturi | Turism |
Functia de transfer
Se considera o linie de transmisie bifilara de lungime 2 Km avand urmatorii parametrii :
C=50 nF/km
L=635,119 mH/km
R=279,173 W/km
Ri=50 MW/km
Se cere sa se determine functia de transfer pentru tronsonul de linie considerata si corelatia intre intrare si iesire.
Z1 Z1
Iin I1 I out
I2 I3
U1 U3
Uin U2 Z2 Z2 Z0Uout
1 km 1 kmsarcina
Calcularea functiei de transfer:
H(s) = functia de transfer.
Functia de transfer se calculeaza cu ajutorul unui program in Matlab.
Impedanta caracteristica si viteza de propagare sunt :
Programul pentru calculul functiei de transfer:
R=279.173;
r=1e+7;
L=635.119*1e-3;
C=5*1e-8;
Z=3.564*1e+3;
B=r^2*Z;
S3=C*L^2*r+C^2*L*R*r^2;
S2=3*Z*L*r^2+2*C*L*R*Z*r^2+C^2*r^2*R*Z+L^2*r+2*C*L*R*r;
S1=3*r^2*Z*R*C+5*L*Z*r+2*L*r^2+2*C*r*R*Z+C*R^2*r^2+R*L;
TL=3*r*R*Z+3*r^2*R+Z*R+r^2*Z;
In urma rularii acestui program s-a determinat urmatoarea functie de transfer:
Programul pentru aflarea corelatiei intre intrarea (u) si iesirea (y) este:
t=0:0.0001:0.09;
u=cos(100*t); %intrare armonica.
num=[0.8096];
den=[10.11e-017 1.54 0.32e-003 1];
y=lsim(num,den,u,t);
% afisarea corelatiei intre intrare si iesire
[c1,lags] = xcorr(u,y);
c1 = mat2str(c1,2), lags
subplot(211);
plot(t,u);
grid;
subplot(212);
plot(t,y);
grid;
Se va afisa:
c1 =
[0.0001 0.0002 0.0003 0.0004 0.0005 0.0006 0.0007 0.0008 0.00089 0.00099 0.0011 0.0012 0.0013 0.0014 0.0015 0.0016 0.0017 0.0018 0.0019 0.0019 0.002 0.0021 0.0022 0.0023 0.0024 0.0025 0.0026 0.0027 0.0028 0.0029 0.0029 0.003 0.0031 0.0032 0.0033 0.0034 0.0035 0.0035 0.0036 0.0037 0.0038 0.0039 0.0039 0.004 0.0041 0.0042 0.0042 0.0043 0.0044 0.0045 0.0045 0.0046 0.0047 0.0048 0.0048 0.0049 0.005 0.005 0.0051 0.0052 0.0052 0.0053 0.0053 0.0054 0.0055 0.0055 0.0056 0.0056 0.0057 0.0057 0.0058 0.0058 .................]
lags =
Columns 1 through 23
-900 -899 -898 -897 -896 -895 -894 -893 -892 -891 -890 -889 -888 -887 -886 -885 -884 -883 -882 -881 -880 -879 -878
Columns 24 through 46
-877 -876 -875 -874 -873 -872 -871 -870 -869 -868 -867 -866 -865 -864 -863 -862 -861 -860 -859 -858 -857 -856 -855
Columns 47 through 69
-854 -853 -852 -851 -850 -849 -848 -847 -846 -845 -844 -843 -842 -841 -840 -839 -838 -837 -836 -835 -834 -833 -832
Columns 70 through 92
-831 -830 -829 -828 -827 -826 -825 -824 -823 -822 -821 -820 -819 -818 -817 -816 -815 -814 -813 -812 -811 -810 -809..........................
Acest document nu se poate descarca
E posibil sa te intereseze alte documente despre:
|
Copyright © 2024 - Toate drepturile rezervate QReferat.com | Folositi documentele afisate ca sursa de inspiratie. Va recomandam sa nu copiati textul, ci sa compuneti propriul document pe baza informatiilor de pe site. { Home } { Contact } { Termeni si conditii } |
Documente similare:
|
ComentariiCaracterizari
|
Cauta document |