[Octave-bug-tracker] [bug #48138] Impulse function of the Control Package

[Doug Stewart]

Follow-up Comment #1, bug #48138 (project octave):

Yes there is a problem.
The C2D function does not have an impulse invariant
method, so the program for the impulse response
uses the ZOH method, which is wrong.

I started making an impulse invariant method for the C2D but got bogged down
on the multiple repeated roots part. I will now prod
myself and get working on it.

I would be easy to do if the control pkg would allow complex numerators and
denominators but it doesn't. So I am writing 
a lot of code to handle these repeated roots.

After the C2D is upgraded then it will be easy to get the impulse function
working.
Doug

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