My system is: s^2/s^3+1 My code is:
num=[1 0 0];den=[1 0 0 1];sys=tf(num,den)sysd=c2d(sys,0.3)sys2=d2c(sysd)
Why is the "sys" different from the "sys2"? Why a system like this 1/(s+1) gives correct results?
num=[1];den=[1 1];sys=tf(num,den)sysd=c2d(sys,0.3)sys2=d2c(sysd)
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