I need to run the control model from xcos (Scilab) in my application.
So, a control-algorithm engineer can develop her control models and test them in the visual environment of xcos. The developed model could be directly incorporated into the application.
How to load and run a xcos model inside my python application? The documentation is very poor.
Run scicos model
I have not a lot of experience with XCOS. But you could try something as mentioned in scicos_simulate documentation.
Start scilab with script
You could make a Scilab script that runs the model and call Scilab with the script. See also calling-an-external-command-in-python
Calls from Python
There is also a kind of python api for scilab calls, so you might use that.