Unable to set/get uisimvartuner's variables (Simulink/Appdesigner)

This is for a GUI used to drive a simulink simulation.

The uisimvartuner widget works as expected: Block parameters from the simulink model appear in the UI.

These parameters' values can be changed before / during the simulation. The simulation clearly uses the updated parameters through the uisimvartuner as soon as these are changed.

To write a simulink data dictionary I want to get the values from all the variables in the uisimvartuner, but cannot find a way of accessing those from the UI code section in appdesigner.

The Block parameters values were defined as variables in the model workspace. If one of the variable gets adjusted in the uisimvartuner widget before/during the simulation, the model workspace is not updated with the new value.

[Hitesh]

Hi Marc,

"uisimvartuner" (Simulink Variable Tuner widget) allows you to interactively tune block parameters during simulation, but these parameter values are managed internally by the simulation engine and are not automatically reflected in the model workspace or accessible as simple variables from MATLAB code running outside the simulation context.

[Marc]

Thanks Hitesh,

Is it possible at all to retrieve the values from "uisimvartuner" (Simulink Variable Tuner widget) or that the simulation is using?

Answer 1

[Govind KM]

Hi Marc,

The block values modified via the "uisimvartuner" component can be accessed from the "Variables" property of the "simulink.Simulation" object. You can add a button which, when clicked, reads the desired values from the "Variables" property and writes them to a file.

More information on the "simulink.Simulation" object can be found in the following documentation page: https://www.mathworks.com/help/releases/R2024b/simulink/slref/simulink.simulation.html#mw_460d5250-0e5e-4ef1-be5f-fe91e9631113