I'm modeling the simple DC motor system in Maple.
The equations describing the system;
First, I create the system using DiffEquation:
And now I have problem. The input var is V(t) (input voltage) and the output var is theta(t) (position of the rotor).
But I wont to have in output var not position of the rotor but speed of the fotor - diff(theta(t),t)
How to set output var for diff(theta(t),t) (the speed of the motor)?