[Scilab-users] [scicos] Fwd: Question about PSPECSCOPE_с in Modnum toolbox

[Nikolay Strelkov]

Thank you for reply, Ramine!

I tried to change parameters as you recommend after your suggestion and
before it.
It does not solve the problem.
FFT figure window is empty, but I expect peak at 1 Hz.

With best regards,
maintainer of Mathieu functions toolbox for Scilab
<http://atoms.scilab.org/toolboxes/Mathieu>,
IEEE member, Ph.D.,
Nikolay Strelkov.



2014-12-26 2:32 GMT+03:00 Ramine Nikoukhah <ramine.nikoukhah at inria.fr>:

> Hi, I am not familiar with this block but the parameters don't seem to be
> correct. The period of sample clock in the model is 1e-3 but the sampling
> period block parameter of this block is not 1e-3. I also note that the size
> of input buffer is 2048 but the simulation stops at 2, i.e., 2000 points. I
> assume no FFT is computed until at least 2048 points are placed in the
> buffer.
> Ramine
>
> ------------------------------
>
> *De: *"Nikolay Strelkov" <n.strelkov at gmail.com>
> *À: *scicos at inria.fr, users at lists.scilab.org, "alan layec" <
> alan.layec at cermics.enpc.fr>
> *Envoyé: *Jeudi 25 Décembre 2014 19:58:20
> *Objet: *[scicos] Fwd: Question about PSPECSCOPE_с in Modnum toolbox
>
>
> Dear ScicosLab and Scilab community!
>
> I have a question about Modnum toolbox, but can't get response from its
> developer.
> Can anybody help me?
>
> With best regards,
> maintainer of Mathieu functions toolbox for Scilab
> <http://atoms.scilab.org/toolboxes/Mathieu>,
> IEEE member, Ph.D.,
> Nikolay Strelkov.
>
>
> ---------- Forwarded message ----------
> From: Nikolay Strelkov <n.strelkov at ieee.org>
> Date: 2014-12-13 1:13 GMT+03:00
> Subject: Question about PSPECSCOPE_с in Modnum toolbox
> To: alan.layec at cermics.enpc.fr
>
>
> Dear Alan!
>
> Thank you for your great Modnum toolbox. I use it from 2009 year for
> modelling of some control system elements.
>
> Today I use Modnum 4.3b with ScicosLab 4.4.1.
> I want to create a simple demo with PSPECSCOPE_с block for calculating and
> plotting FFT spectrum of a simple sine wave.
>
> As a starting point I created small file in Scilab 5.5.1 which plots and
> calculates FFT spectrum. It is in attachment, and it works as I expect.
>
> I created Scicos model file, but I can't understand how to set correct
> options for PSPECSCOPE_с block for getting expected FFT. The model file is
> in attachment.
>
> Could you please help me to set up PSPECSCOPE_с block?
>
> With best regards,
> maintainer of Mathieu functions toolbox for Scilab
> <http://atoms.scilab.org/toolboxes/Mathieu>,
> IEEE member, Ph.D.,
> Nikolay Strelkov.
>
>
>
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