Hi Shymaa,
To apply the “stepinfo” function correctly using your Simulink array data, you can extract the time and output data from the simulation, then adjust for any initial conditions before the step input (starting at 1 second in your case).
After cropping the data from the point where the step input begins, you can use “stepinfo” to measure key parameters like settling time, overshoot, and rise time. Here’s a small code snippet for the same:
% Assuming out stores Simulink data
time = out.tout; % Time array
output = out.sim_output; % Response array
% Crop the data starting from the step input time
step_start_time = 1;
cropped_time = time(time >= step_start_time);
cropped_output = output(time >= step_start_time);
S = stepinfo(cropped_output, cropped_time);
fprintf('Rise Time: %.2f seconds\n', S.RiseTime);
fprintf('Settling Time: %.2f seconds\n', S.SettlingTime);
fprintf('Overshoot: %.2f%%\n', S.Overshoot);
fprintf('Peak Time: %.2f seconds\n', S.PeakTime);
To know more about “stepinfo” function, you can refer to the following documentation link:
