Is anyone aware of Maxima functions to find the z transform of a
function of time? I need to convert some transfer functions from the
Laplace domain to the z domain and include the effect of
sample-and-hold circuitry. One way to do this is to inverse Laplace
the transfer function divided by s and then z transform, and then
multiply by (1-z^-1). I know that Maxima has inverse Laplace, I would
just need to be able to do a z transform to make it all work.
The z transform is an infinite sum, so perhaps this is not a big deal
for maxima:
X(z)=sum x(kT)*z^-k where k goes from 0 to infinity and T is the
sample time to move from continuous time t to discrete time kT.
Thanks,
Ryan