I need to identify two systems. Those are their Unit Step responses:
I don't know, what order of the system that is. It could be second order system with zero in 0. Lecturer told me it was third order system, but then told me to solve it as second order system, so I'm a bit confused. More over we don't have materials for those systems, which would show us how to idnetify them. Lecturer told me to search it on the internet.
So I wonder whether anyone could give me some hint or better, if anyone could explain how to solve this or what kind of system those systems are.
I would welcome some good materials for this task.