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Re: Converting from S to Z domain
From: |
Doug Stewart |
Subject: |
Re: Converting from S to Z domain |
Date: |
Mon, 21 Feb 2011 10:39:03 -0500 |
On Mon, Feb 21, 2011 at 7:49 AM, Jez Green
<address@hidden> wrote:
Hi,
I'm trying to convert
s
-------------------
s^2 + 4
into the Z domain.
Thus far I have written
octave:1> num = [1 0];
octave:2> den = [1 0 4];
octave:3> sys = tf(num, den, 1);
octave:4> z_sys = c2d(sys, 1);
Is this right so far?
How do I pull the final Z transform eqn from z_sys?
Thanks Jez
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First of all, there are many ways to go from s to z
Impulse invariant
step invariant
matched pole zero
bilinear
prewarped bilinear
ZOH
FOH
etc.
Are you doing a filter, or a plant?
Did you look at help c2d?
I will help you, so just tell me more.
Doug