[SI-LIST] Re: laplace errors
- From: Luca Giacotto <lgiacott@xxxxxxxxx>
- To: SI-list <si-list@xxxxxxxxxxxxx>, alicor@xxxxxxxxxxxxxxx
- Date: Thu, 27 Mar 2003 17:37:30 -0800
Alicia,
you are likely to have a function in the Laplace-domain with poles in
the right-half of the complex plane. You should eliminate them, in order
to make your system stable and causal.
NB: I supposed that the system you describe with the Laplace element is
LTI (linear and time-invariant) and passive.
Hope it helps,
Luca
On Thu, 27 Mar 2003 09:48:13 -0500
"Ingraham, Andrew" <Andrew.Ingraham@xxxxxx> wrote:
> "Non-causal" means the output starts appearing before the input is
> applied. Apparently the functions or data that describe your laplace
> element have a response that does this.
>
> To make it "causal," you would need to add some delay to the element.
> But that doesn't necessarily fix the problem.
>
> (Note: I haven't used laplace elements.)
>
> Regards,
> Andy
>
>
> > I use ORCAD-PSpice 9.2, Can any body help me? I don't know the meaning
> > os this messages:
> >
> >
> > 49.901 percent of X_signo_ABM.E_LAPLACE1 impulse response is
> > non-causal.
> >
> > 49.901 percent of X_signo_ABM.E_LAPLACE1 impulse response is
> > non-causal.
> >
> > It should be delayed by at least 7.84424e-005 sec.
> >
> > Thanyou for your help.
> >
> >
> >
>
> ------------------------------------------------------------------
> To unsubscribe from si-list:
> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>
> or to administer your membership from a web page, go to:
> //www.freelists.org/webpage/si-list
>
> For help:
> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>
> List archives are viewable at:
> //www.freelists.org/archives/si-list
> or at our remote archives:
> http://groups.yahoo.com/group/si-list/messages
> Old (prior to June 6, 2001) list archives are viewable at:
> http://www.qsl.net/wb6tpu
>
--
Luca Giacotto <lgiacott@xxxxxxxxx>
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
