MATLAB: Hi can you teach me how to plot teh below response with simulink

simulink step

i want to plot the picture below but i don't know how

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You can use the "signal builder" block which is found in "sources" of simulink library. Just double click on it and start creating your signal as you wish.

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In the 'To Workspace' block select 'Array' as the output type instead of 'Timeseries'

MATLAB: Finding teh intersection between 2 curves.

I took a different approach:

Ra=3.32; % [ohm]
Ke=1120; % [rpm/V]
Ke=(1120*2*pi/60)^-1; %[Vs/rad]
k = 1.38*(10^-23);
w = 50; % [rad/s]
Isc = 0.28;
T = 294;
q = 1.6*(10^-19);
Ur = (k*T)/q;
Is = 10^-8;
e = 2.71828;
N = 16;
m = 1.3286;
E=Ke*w;
U = [0, 0.39, 2.11, 3.18, 4.79, 6.29, 7.57, 8.36, 8.66, 8.76, 8.81, 8.86, 8.88, 8.92, 8.93, 8.96, 9.15];
I = [0.28, 0.28, 0.27, 0.27, 0.27, 0.26, 0.26, 0.26, 0.24, 0.23, 0.21, 0.19, 0.18, 0.16, 0.15, 0.14, 0];
Ia = Isc - (Is*(e.^(U/(m*Ur*N))-1)); %[A]
Ua=Ra*Ia+E;
Imatch = interp1(U, I, Ua);                             % Find Matching ‘I’ Values For ‘Ua’
dI = I - Imatch;                                        % Subtract To Get Zero Crossing
Ucross = interp1(dI, Ua, 0);                            % Calculate ‘Ua’ At Zero-Crossing
Icross = interp1(Ua, I, Ucross);                        % Calculate Corresponding ‘I’
figure(1)
plot(Ua,Ia,U,I)
hold on
plot(Ucross, Icross, 'pg', 'MarkerFaceColor','g')
hold off
axis([0 10 0 0.4])
xlabel('U(V)')
ylabel('I(A)')
title('voltage and current')
text(Ucross, Icross*1.05, sprintf('(%.3f, %.3f)', Ucross, Icross), 'HorizontalAlignment','center', 'VerticalAlignment','bottom')

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Related Solutions

MATLAB: How to send result from block (Simulink) to the Workplace (not array)

MATLAB: Finding teh intersection between 2 curves.

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