Script does not work automatically

Hello. This Script allows me to simulate a PI control system but it should do it automatically, it is not doing it, I have to go to the Simulink diagram and change the PI values. In this Matlab script what do I have wrong? It doesn't change the PI values automatically. Thanks.

tg = xpc;
tg_P = getparamid(tg, 'PI Controller', 'P')
tg_I = getparamid(tg, 'PI Controller', 'I')
y = []; s = []; e = []; flag = 0; p=[1,0.5,0.1]; i=[0.01,0.05,0.1];
for k = 1 : 1 : 3
  P=p(k); 
  setparam(tg,tg_P,P);       % Set damping factor (Gain1/Gain)
for j = 1 : 1 : 3                % Loop over damping factor z
  I=i(j);
  setparam(tg,tg_I,I);       % Set damping factor (Gain1/Gain)
  start(tg);                            % Start model execution
  pause(1.1*tg.StopTime);
  outp = tg.OutputLog;                  % Upload output and
  y    = [y, outp(:, 1)];               % store in a matrix
  s    = [s, outp(:, 2)];
  e    = [e, outp(:, 3)];
  t    = tg.time;                       % Upload time vector
  consigna=outp(:, 1);
  posicion=outp(:, 2);
  error=outp(:, 3);
  SumErr=sum(abs(error));
  save (['Control PI_',num2str(P),'_',num2str(I),'.mat'],'consigna','posicion','error','P','I','SumErr');
  plot(t, outp(:, 1),'b',t, outp(:,2),'r');                  % Plot data for current run
  set(gca, 'XLim', [t(1), t(end)], 'YLim', [-50, 400]);
  title(['DC Motor: Proportional Gain = ', num2str(P),'    Integral Gain  =',num2str(I)]);
  xlabel('Time'); ylabel('Output');
  drawnow;
  saveas(gcf, ['P=', num2str(P),'_I=',num2str(I),'.fig'], 'fig')    % Guarda las figuras
end
end
save Total.mat

[Walter Roberson]

Doesn't setparam require that you set to character vectors, not numeric values?

Answer 1

[Ruben Dario Ramirez Serna]

I'm sorry but I don't understand your question, you ask me if Setparam is ok?

[Walter Roberson]

I was getting confused between two functions with similar names.

You are using xpc which is Simulink Real-Time. For that product, using setparam is the correct way to set tunable parameters.

I was thinking about Simulink models not being used for real-time. When xpc is not being used, then set_param is the function used, and that function requires text values instead of numeric values. Very similar function name, different calling sequence.

[Ruben Dario Ramirez Serna]

I work in the control of a DC motor in real time by Simulink Real Time (Host-Target), the Script that I propose must make the automatic change of the PI control: P=1,I=0.01 after P=1,P=0.05 until P=0.1,I=0.1 but it is not doing it

[Walter Roberson]

Unfortunately, I do not have experience with Simulink Real-Time.