I want to display the changes of the curves in the Simulink model in real-time in the APP designer.

I want to display the changes of the curves in the Simulink model in real-time in the APP designer. In other words, I want to see the process of curve changes, but now I can only see the final result of the curve.

First，I display the result with codes below,but i want to show the process of changes real-time.

simInp = Simulink.SimulationInput('PC_Muti_Volume_platform_PB1_PB2');
simOut = sim(simInp);
load P_real.mat;
load P_set.mat;
plot(app.UIAxes_6,P_real.time,P_real.data,P_set.time,P_set.data);

The result is like this , how can I make it show the changes.

Answer 1

[Rahul]

Hi @警泽,

As I understand you wish to demonstrate the output of your Simulink model in App Designer in real-time. You can consider using Simulink real-time components. MATLAB R2022a has som Simulink real-time components availble in the Component Library of App Designer. In order to use more Simulink real-time components, consider upgrading to recent MATLAB releases.

Refer to the following MathWorks documentations to know more about Simulink real-time components:

https://www.mathworks.com/help/slrealtime/ug/basic-app-designer-app-for-real-time-app-interface.html

https://www.mathworks.com/help/slrealtime/ug/create-app-designer-instrument-panels-by-using-simulink-real-time-components.html

Another approach can be to use Simulink real-time App generator. This has capabilities to create an App Designer app, which would work with specified Simulink model and can be accessed from the Simulink editor from the Real-time tab.

Refer to the following documentations to know more about this:

https://www.mathworks.com/help/slrealtime/index.html

https://www.mathworks.com/help/slrealtime/ref/simulinkrealtime-app.html

The following MATLAB Answers mention another approach where the InitFcn and StartFcn of the Simulink model can be changed. A callback for updating the GUI of the app can be called.

https://www.mathworks.com/matlabcentral/answers/446302-how-do-i-update-a-gui-designed-in-app-designer-with-data-from-a-running-simulink-model

https://www.mathworks.com/matlabcentral/answers/854825-how-to-plot-a-simulink-desktop-real-time-model-output-in-an-app-designer-app

Hope this helps! Thanks.