|Subject:||c2d output Interpretation|
|Date:||Mon, 20 Feb 2017 12:00:22 -0500|
|User-agent:||Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0|
I am trying to design a digital phase lead compensator using the c2d function in the Octave 4.0.0 control package.
The output of the b & a coefficients I fed in looks like this:
I noticed a couple things about this output:
1) The powers of the 'a' coefficients start positive. Does that not make this system non-causal?
2) Why is this discrete time LTI model represented as "y1" and not "H(z)"? I fed in the coefficients of H(s) by running c2d this way:
comp_tf = tf(gain*numc,denc); %create the s domain LTI
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