Hi, friends:
Now I have a design project about discerete time and continuous time system. I have to design two paramaters in this system. Now I get the closed transfer function with above two paramaters in z-domain. I use Jury stability to get the region of paramaters to stabilize the system. Further, I use final value rule to check steady state, I also get the equivelent transfer function with unit feed-back, when I compute steady-state error through equivelent transfer function, I got zero result. In my thought, this result should be relative to above two paramaters. So based on my understanding, zero result hint whatever the vaule of two paramaters are, the steady-state error would be zero, however, Jury stability told me another result-----only some values of two paramaters can make system stable. I am not sure my understanding is right ? and this siutation can be explainedable? Thank you very much!