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Too many output arguments. Requested 3 output(s), but only 1 output(s) available.

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function cost_value=cost_func(k,plotfig)
ke=k(1,1);
kce=k(1,2);
ku=k(1,3);
X=k(1,4);
z_a=abs(k(1,5));
v_a=abs(k(1,6));
% negative big
NB=-X;
% negative medium
NM=-X/2;
% positive medium
PM=X/2;
% positive big
PB=X;
Z=0;
% Compute function value
opt = simset('solver','ode23tb','SrcWorkspace','Current');
[tout,xout,yout] = sim('ACO_TS.slx',[0 0.5],opt);
% compute the fitness value
z1=sqrt(mean(rmse)); % rms error
z2=(mean(iae)); % integral absolute error
z3=(mean(itae)); % integral time multiplied absolute error
z4=(mean(ise));
cost_value=z1+z2+z3+z4+mean(thd1);
Error using cost_func
Too many output arguments. Requested 3 output(s), but only 1 output(s) available.
Error in ACO (line 58)
cost(A)=cost_func(tour_selected_param,0); - Show complete stack trace
  5 Comments
Sam Chak
Sam Chak on 7 Jan 2024
Can you count the number of output(s) available in your Simulink model? Perhaps you requested these three outputs (in individual vectored data form) from the Simulink model in the cost_func() function, but it's possible that you consolidated all the data into a single simulation output object named 'out', as pointed out by @Walter Roberson.
If you are unfamiliar with the object-oriented programming (the dot notation stuff), then better configure the Simulink model to log the requested data as tout, xout, yout, rmse (incorrect!), ise, iae, and itae.

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Accepted Answer

madhan ravi
madhan ravi on 7 Jan 2024
You expect three outputs to be returned from sim() whereas only one output can be returned from sim() command
  13 Comments
madhan ravi
madhan ravi on 8 Jan 2024
Sorry my goal was to clear all the errors as stated in your original question. Regarding the correctness of your question , it"s better you post a new question.

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More Answers (1)

Walter Roberson
Walter Roberson on 7 Jan 2024
I suspect that your model has been configured to return a single output;

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