I need to propose a transfer function from the following graph. The K value (or amplifier gain?) we were given is 2 and it has a step response of 2 as well. When looking at the graph though it looks as if the K value we were given is incorrect if it has an output voltage of around 5v. Can anyone help me propose a transfer function for this? Or point me to some resources that could show me?
A generic, first order transfer function is expected to be of the form
$$
\frac{K}{\tau s + 1}
$$
and I expected K = 5/2
.