How to dynamically change Simulink variables from MATLAB App Designer after simulation is initiated

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Daniel Williams
Daniel Williams 2023-6-20
评论： Jon 2023-6-21
I have designed an app using the MATLAB App Designer that has a slider. I would like to assign the value of the slider in the app to a variable in my Simulink model. I have tried using
assignin('base', 'variableName', sliderValue);
in the function SliderValueChanged(), however while I can see that the value of variableName changes in the MATLAB workspace, it does not change in the Simulink model: a constant block set equal to variableName remains at the value of variableName at t=0 s is used for all time). Is there a way to have the Simulink model update variableName after model execution has begun?

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Jon
Jon 2023-6-20
You should be able to use set_param, for this purpose.
So for example:
set_param('mymodel/Gain','Gain',num2str(11))

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