I believe I attempted to address your other question (about the dynamical model within Nengo) in this forum thread.
I’m not sure if I mentioned it in that other thread, but it would really help to have some example of how you have coded this dynamic system. You don’t have to provide the exact code you are using, a simple version of the controller (even a system that doesn’t do anything, but illustrates how the inputs and outputs are connected and used) will be helpful.