ajout des fichiers matlab

signal/matlab/scriptDFT.m

@@ -1,31 +1,173 @@
+%%
+%TUTO BAC A SABLE
+figure(1);
+plot(Res.Sinus_Continu);
+hold on;
+plot(Res.Sinus_Echanti,'o');
+grid;
+title('Courbe temporelle du Sinus');
+
+tab = linspace(0,M-1,M);
+tab = tab*(Fe/M);
+r = fft(Res.Sinus_Echanti.data);
+
+figure(2);
+stem(tab,abs(r/M));
+grid;
+title('Module de la TFD en fonction de la fréquence');
+
+
+%%
+%QUESTION 1 ET 2 
 clear all;
 close all;
+clc;
 
-%% Paramètres
+Fe = 320000;
-T = 0.25;               % Fenêtre d'observation
+Te = 1/Fe;
-M=32;                   % Nombre d'échantillons dans la fenêtre
+T = 1/5000;
+M = T/Te;
+Tsim = T-Te;
 
+F1 = 85000;
+F2 = 90000;
+F3 = 95000;
+F4 = 100000;
+F5 = 115000;
+F6 = 120000;
 
-%% Paramètres déduits
+Res = sim('SimuGuns');
-Te = T/M;               % Période d'échantillonnage
+echelle_freq = linspace(0,M-1,M)*(Fe/M);
-Tsim = T-Te;            % Instant final de simulation
+r = fft(Res.Echanti.data);
-Fsin = 4 ;
-%% Calculs préliminaires 
 
+figure(1);
+plot(Res.Continu);
+grid;
 
-%% Lancement de simulink
+figure(2);
-out=sim("simDFT")
+plot(echelle_freq,abs(r/M),'o');
+grid;
+%%
+%QUESTION 3 
+clear all;
+close all;
+clc;
+
+Fe = 320000;
+Te = 1/Fe;
+T = 1/5000;
+M = T/Te;
+Tsim = T-Te;
+
+F1 = 85005.9;
+F2 = 90000;
+F3 = 94846.8;
+F4 = 100000;
+F5 = 115015.9;
+F6 = 120000;
+
+Res = sim('SimuGuns');
+echelle_freq = linspace(0,M-1,M)*(Fe/M);
+r = fft(Res.Echanti.data);
+
+figure(1);
+plot(Res.Continu);
+grid;
 
-%% Visualisations temporelle
-plot(out.sin_continu,'.-');
 hold on;
-plot(out.sin_echanti,'o');
+figure(2);
-grid on;
 
-%% Calcul DFT
+semilogy(echelle_freq,abs(r/M));
+grid;
 
+%%
+%Question 4 
+clear all;
+close all;
+clc;
 
-%% visualisation DFT
+Fe = 320000;
-figure();
+Te = 1/Fe;
+T = 1/5000;
+M = T/Te;
+Tsim = T-Te;
 
+F1 = 85005.9;
+F2 = 90000;
+F3 = 94846.8;
+F4 = 100000;
+F5 = 115015.9;
+F6 = 120000;
 
+Res = sim('SimuGuns');
+for i = 1:32
+    Res.Echanti.data(i) = 0;
+end
+echelle_freq = linspace(0,M-1,M)*(Fe/M);
+r = fft(Res.Echanti.data);
+
+figure(1);
+plot(Res.Continu);
+grid;
+
+hold on;
+figure(2);
+semilogy(echelle_freq,abs(r/M));
+grid;
+
+%%
+%Question 6
+clear all;
+close all;
+clc;
+F1 = 85000;
+Fe = 320000;
+Te = 1/Fe;
+%T = 1/F1;
+%M = T/Te;
+T = 2*10^(-4);
+M=2^6;
+Tsim = T-Te;
+
+Res = sim('SimuGuns');
+echelle_freq = linspace(0,M-1,M)*(Fe/M);
+r = fft(Res.carre1.data);
+
+figure(1);
+plot(Res.carre1);
+grid;
+
+hold on;
+figure(2);
+plot(echelle_freq,log10(abs(r/M)),'o');
+grid;
+%%
+% Question 8 
+clear all;
+close all;
+clc;
+F1 = 85000;
+Fe = 320000;
+Te = 1/Fe;
+%T = 1/F1;
+%M = T/Te;
+T = 2*10^(-4);
+M=2^6;
+Tsim = T-Te;
+p = tf('p');
+Fp = 1/(1.7483e-23*p^4 + 7.6663e-18*p^3 + 1.162e-11*p^2 + 3.0332e-6*p+1);
+
+Res = sim('SimuGuns');
+echelle_freq = linspace(0,M-1,M)*(Fe/M);
+r = fft(Res.carre.data);
+
+figure(1);
+plot(Res.carre);
+grid;
+
+hold on;
+figure(2);
+bode(Fp);
+plot(bode(Fp));
+%plot(echelle_freq,log10(abs(r/M)),'o');
+grid;