Chapter 2 Linear System Representation
© National Instruments Corporation 2-19 Xmath Control Design Module
Now convert back to the continuous form:
Hc = makecontinuous(Hd_f, {forward});
[num,den] = numden(Hc)
num (a polynomial) =
(s + 0.36)
den (a polynomial) =
2
(s + 0.999998)(s + 1)(s + 0.79s + 0.16)
Although makecontinuous( ) restores the continuous-time poles and
zeros, it cannot match gains precisely.