PMSM DRIVE EXAMPLE: where are the model's variables located?

Hello,

I'm playing with R2025b demo license and I'm trying to understand PMSM Drive Example in simscape electrical.

The .m file reports just a command line:

set_param(find_system('PMSMDrive','FindAll', 'on','type','annotation','Tag','ModelFeatures'),'Interpreter','off')

One time I run the model it works and in the workspace a list of variables appear.

But where those variables are located? I don't see any configuration files or similar. I'm trying to see if a configuration Musk is present for each block, but nothing.

Thanks in advanced for the support

Stefano

Answer 1

[Chuguang Pan]

@Stefano. The variables appearing in the base workspace is calculated from the PreloadFcn callback function in the PMSM model. You can use get_param function to obtain the content of PreloadFcn.

openExample('simscapeelectrical/PMSMDriveExample')
get_param(bdroot,"PreloadFcn")

[Stefano]

Thanks @Chuguang Pan, but how can I set/modify these parameter in PreloadFcn?

I mean, if I create a model from scratch generally I created also an associated .m file in which define the parameters. I'm expecting a mask or something similar directly in the blocks or somewhere in the model.

Could you suggest me something to read/see that explain how to dwell with PreloadFcn callback function?

Thanks in advanced for your support

Stefano

[Chuguang Pan]

@Stefano. If you want to load associated parameters of model before opening the model, you can write a .m file which includes parameter initialization setting statements. Then , you can call this .m file from the PreloadFcn property of model. In addition, you can organize your code files as a MATLAB Project for better management, and set the matlab.project.Project.StartupFiles of your project as the parameters initialization file. The StartupFiles will run first before loading model.