feat: Replace images with custom ones generated using MATLAB

images/Immagini.m

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+%% Rete lead
+clear
+clf
+s = tf('s');
+
+figure(1)
+for m_d = 3:16
+    Rz = (1+s)/(1+s/m_d);
+    bode(Rz)
+    grid on
+    hold on
+end
+title("Lead network")
+saveas(gcf,'retelead.png')
+
+%% Rete lag
+clear
+clf
+s = tf('s');
+
+figure(2)
+for m_d = 3:16
+    Rz = (1+s/m_d)/(1+s);
+    bode(Rz)
+    grid on
+    hold on
+end
+title("Lag network")
+saveas(gcf,'retelag.png')
+
+%% Rete zero
+clear
+clf
+s = tf('s');
+
+figure(3)
+Rz = (1+s);
+bode(Rz)
+grid on
+
+title("Zero network")
+saveas(gcf,'retezero.png')
+
+%% Plots riguardo ad un generico sistema ad anello
+clear
+clf
+omega_c = 690;
+s = tf('s');
+L = (1.498e14*s^2 + 8.615e16*s + 1.189e19)/(79350*s^5 + 3.468e08*s^4 + 2.732e11*s^3 + 7.539e13*s^2 + 6.611e15*s)
+T = L/(1+L);
+S = 1/(1+L);
+
+figure(1)
+bodemag(T)
+hold on
+grid on
+[mag,~,wout] = bode(T,omega_c);
+text(wout,mag2db(mag),'Tp','Color','red','FontSize',14, 'VerticalAlignment','bottom')
+title("T(j \omega)")
+xline(omega_c, '--b', "\omega_c", 'LabelOrientation','horizontal','LabelVerticalAlignment','bottom','FontSize',14)
+saveas(gcf,'bodeT.png')
+
+
+figure(2)
+bodemag(S);
+hold on
+grid on
+[mag,~,wout] = bode(S,omega_c);
+text(wout,mag2db(mag),'Sp','Color','red','FontSize',14, 'VerticalAlignment','bottom')
+xline(omega_c, '--b', "\omega_c", 'LabelOrientation','horizontal','LabelVerticalAlignment','bottom','FontSize',14)
+title("S(j \omega)")
+saveas(gcf,'bodeS.png')
+
+figure(3)
+bodemag(L)
+hold on
+grid on
+bodemag(S)
+bodemag(T)
+xline(omega_c, '--b', "\omega_c", 'LabelOrientation','horizontal','LabelVerticalAlignment','bottom','FontSize',14)
+legend
+saveas(gcf,'lts.png')
+
+figure(4)
+bode(L)
+hold on
+xline(omega_c, '--b', "\omega_c", 'LabelOrientation','horizontal','LabelVerticalAlignment','bottom','FontSize',14)
+title("L(j \omega)")
+grid on
+saveas(gcf,'plotljw.png')
+
+%% Step response
+clear
+clf
+s = tf('s');
+T = 6.9846e09*s*(s+3450)*(s+2760)*(s+400)*(s+345)*(s+230)*(s+175)/(s*(s+4410)*(s+3450)*(s+2760)*(s+400)*(s+175)*(s^2 + 557.1*s + 7.863e04)*(s^2 + 1818*s + 1.598e06));
+figure(1)
+step(T)
+hold on
+grid on
+xline(0.00292, '--b', "t_r", 'LabelOrientation','horizontal','LabelVerticalAlignment','bottom','FontSize',14)
+yline(1, '--b', "y_\infty", 'LabelOrientation','horizontal','LabelVerticalAlignment','bottom','FontSize',14)
+yline(1.05, '--b', "y_{max}", 'LabelOrientation','horizontal','LabelVerticalAlignment','top','FontSize',14)
+saveas(gcf,'transitorio.png')
+
+%% Step response second order system
+clear
+clf
+s = tf('s');
+t = linspace(0,20,1000);
+figure(1)
+for xi = 0:0.1:1
+    Rz = 1/(1+2*xi*s+s^2);
+    step(Rz,t)
+    hold on
+    grid on
+end
+title("Step response of prototype second order system")
+saveas(gcf,'rispostasecondoordine.png')