I've implemented a model of a ball-on-plate plant and am controlling it over a network. Below is the open loop output when excited by successive sinusoidal inputs with increasing frequencies. I know that the plant is open loop unstable, and it is cool that this figure so nicely captures the instability.
What I'd like to know is if there is other information that I can glean about the plant from the relationship between the input and the output state.
(The state is clipped at 3.1 units.)