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Re: Define delay in a continuous system?
From: |
Joaquín Reyes González |
Subject: |
Re: Define delay in a continuous system? |
Date: |
Tue, 14 Dec 2004 13:20:14 +0100 |
I'm sorry, but I don't mean... I've read this mail yet (I forget write
so) but I'm trying define the delay whitout Pade aproximation, by exact
form. Is it possible? There is any way to define the delay like the
comand of Matlab, "ImputDelay"? I'm looking for a rigorus frecuency
response...
In this mail is wrote that:
A pure transport delay P(s) =3D e^{-s*T) is an infinite
dimensional
function, and so you either need to implement it with a deadbeat FIR
filter P(z) =3D 1/(z^N) for some large N (and appropriately fast
sampling time Ts =3D T/N) or, =if=20
you prefer, use a Pade approximation of P(s)
Is "=3D" any special character?
THAK YOU SO MUCH.
El mar, 14-12-2004 a las 12:06, Geraint Paul Bevan escribió:
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> Joaquín Reyes González wrote:
> | Hi to all:
> |
> | I'm trying to define a continuous system (thought transfer function)
> | with octave 2.1 (running by Debian Sarge), seems that:
> |
> | Tf = e^(-10*s) / (1+20*s)
> |
> | So, how could I define the delay?
> |
> | THANK YOU SO MUCH.
> |
>
> There was an answer to a similar question previously:
> http://www.octave.org/octave-lists/archive/help-octave.2002/msg00080.html
>
> If you choose to use the Pade approximation, the formulae for the
> exponential function are given at:
> http://mathworld.wolfram.com/PadeApproximant.html
>
> - --
> Geraint Bevan
> http://www.mech.gla.ac.uk/~gbevan
>
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>
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--
Salu2, Joaquín (d"_"b)
Linux Is Not UniX (but is wonderful too)
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