The areas of signal processing and feedback control systems go hand in hand.
Are control system questions within the intended scope of this site?
If not, I'm surprised... and where should they go?
I would add to the point on @Jason's point :
Just ask what the question is about - if you are asking for theoretical perspective in other words - why certain things works the way they are, it is best fit here. If you find that your primary goal is to make the circuit work - and what are the practical titbits to be able to get there fast - essentially how to make it work - it better be at electronics.SE