Hey Aylinne,
If you are planning to add disturbance to the existing state space model, augment the matrices B, D in the “State-Space” block as follows:
B= [B E];
D= [D F];
And while giving inputs use a “Mux” to give input and the disturbance.
Here I am attaching the screenshot regarding its implementation in Simulink.
Also, you may refer to this answer which addresses the similar query.
Hope this answer calrifies your query!
