How to get variable from Simulink model workspace for use with Multiple Simulations?

I am using a slightly modified copy of the Fuel Cell / EV Reference model. ('autoblkFCEvStart')

I would like to use the Multiple Simulations function with this model, to vary some of the input parameters. For example, Fuel Cell area is in the model workspace as 'stack_area'.

Looking at the Multiple Simulations panel, it looks like I would create a new study, and then add a variable to the design study. Variable name is 'stack_area', but what do I use for "Workspace"? Or is there some other setup needed?

From the Matlab command line, I can access this variable by:

hws = get_param('FCElectricPlant','ModelWorkspace')

area = hws.getVariable('stack_area')

I'm not sure how to translate that into how to configure the design study inputs.

Thanks!

Answer 1

[Fangjun Jiang]

I think you are looking for model parameter argument. Follow this Q&A.

https://www.mathworks.com/matlabcentral/answers/2101666-programmatic-setting-of-argument-attribute-for-parameter-in-simulink-model-workspace

[Mark]

Hi, My question is mainly on how to do this with the Multiple Simulations panel:

Thanks!

[Fangjun Jiang]

See this.

https://www.mathworks.com/help/releases/R2023b/simulink/ug/multiple-simulations-panel-example.html

[Fangjun Jiang]

You can specify the workspace as global-workspace or as you did, the model name, which means the model workspace. You need to add the square bracket to the values, [294, 308, 322, 336, 350].

global-workspace is most likely the base workspace.

At the model, press Ctrl+H to open the Model Explorer, navigate to find the Model Workspace.