Hello, Mr. Stefan,
Thanks.
plot (X,Y);
cafix = gca();
cafix.tight_limits="on";
cafix.auto_scale="off";
cafix.data_bounds = [-0.5,-2;0.5,2];
set(gca(),"data_bounds", cafix.data_bounds);
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Hello, Mr. Stefan,
Thanks.
Should we put following codes before each plot command?
cafix = gca();
cafix.tight_limits="on";
cafix.auto_scale="off";
cafix.data_bounds = [-0.5,-2;0.5,2];
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Hello, Mr. Stefan,
Thanks. Could you please tell me how to se it?
I tried the following code. My intention is to define X: from -0.5 to +0,5
and Y from -2 to +2.
However, plot command didn't work as I expected. Any idea?
cafix.data_bounds = [-0.5,-2;0.5,2];
cafix.tight_limits="on";
cafix.auto_sc
Hello,
I would like to define the Y Range of plot. Could you tell me the Scilibe
code to realize this.
If I use the plot command, Y range is automatically set by Scilab.
I would like to set the Y range, e.g. min -10 to Max 20.
Thanks for your advise
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Hello,
I would like to define the Y Range of plot. Could you tell me the Scilibe
code to realize this.
If I use the plot command, Y range is automatically set by Scilab.
I would like to set the Y range, e.g. min -10 to Max 20.
Thanks for your advise
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blem?
In addition to that I am not familiar with fft.
Best Regards,
- 元のメッセージ -
差出人: "Tim Wescott [via Scilab / Xcos - Mailing Lists Archives]"
宛先: "Fukashiimo"
送信済み: 2016年9月28日(水曜日) 01:32:24
件名: Re: System Identification for First order delay and dead time
Fi
- 元のメッセージ -
差出人: "Tim Wescott [via Scilab / Xcos - Mailing Lists Archives]"
宛先: "Fukashiimo"
送信済み: 2016年9月26日(月曜日) 04:07:52
件名: Re: System Identification for First order delay and dead time
Heh. I just realized a better way to do this:
I assume that you've sampled
ert the
discreate transfer function to continuous transfer function.
May I ask your further advise on these issues?
Thanks.
- 元のメッセージ -
差出人: "Clément David-2 [via Scilab / Xcos - Mailing Lists Archives]"
宛先: "Fukashiimo"
送信済み: 2016年9月25日(日曜日) 04:15:09
件名: Re: System Id
delay time constant
Td is th constant, dead time
Such case How we can get these constant values from datafit?
Could you please advise?
Thanks.
- 元のメッセージ -
差出人: "Denis Crété [via Scilab / Xcos - Mailing Lists Archives]"
宛先: "Fukashiimo"
送信済み: 2016年9月25日(日曜日) 06:23:27
件名:
gt;
> The cost function should generate a vector for ymodel with K = 1, then
> find the best fit for K with
>
> K = y / ymodel;
>
> then return a cost
>
> cost = norm(y - K * ymodel);
>
> wrap that all up in NDCost and then optim, and away you'll go.
>
> On
Yes. I have data of y and u. s is the Laplaceoperator, no data is available.
for s.
"Samuel GOUGEON [via Scilab / Xcos - Mailing Lists Archives]"
:
>Le 25/09/2016 01:02, Fukashiimo a écrit :
>
>Thank you for your advice. y and u have some correration. X in your equati
Thank you for your advice. Is it possible to obtain Td also?
I am going to use it.
"Clément David-2 [via Scilab / Xcos - Mailing Lists Archives]"
:
>Hello,
>
>I suggest you to take a look at the `time_id` function [1]. AFAIK this will
>give you a first idea of the parameters. If you need more,
not too close to 0),
>it seems better to adjust z= ymodel/u = f(s).
>
>I frequently use “datafit” for this purpose. Here f(x)=
>(K/(Tau*x+1))*exp(-Td*x).
>
>HTH,
>
>Denis
>
>
>
>[@@ THALES GROUP INTERNAL @@]
>
>
>
>De : users [mailto:[hidden email]] D
s is the Laplace operator, u is the process input vatiable, y is the
process output variable,
2016/09/24 23:44 "Samuel GOUGEON [via Scilab / Xcos - Mailing Lists
Archives]" :
> Le 24/09/2016 15:59, Fukashiimo a écrit :
>
> > Hello,
> >
> > I am looking for a S
Hello,
I am looking for a Scilab software which is similar to Matlab System ID tool
box.
I would like to obtain values of parameters, Tau, K and Td for following
first order delay + Dead time model from time series data.
ymodel = (K/(Tau*s+1))*exp(-Td*s)*u
ymodel: process output, u: process input
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