If you're going to be doing this often it may be profitable to get a
book on system identification. I can't be sure because I haven't had to
do it, but I'm pretty sure that system identification with time delay is
an indirect enough process that there will be multiple ways to do it,
each one being
Dear Mr.Serge,
Thank you for your advise.
I didn't know that step should start from the beginning.
If there is a scilab tool to identify transport delay and continuous time
transfer functions (Fist order delay, scond order delay, integral), it would
be nice.
Thanks.
Y. Noguchi
--
View t
You made a mistake because the response you compute with
rep=flts(u,tf2ss(h)); k=find(rep<>0,1)
is not exactly a step response because the step does not occur at the
first sample
If you use
H=time_id(10,u,rep)
to identify the response you vill got a batter result
An other an probably better so
Dear Mr.Serge,
Thank you for your advise. I tried to use time_ID.
Please look at the following Scinote:
z=poly(0,'z');
h=(0.07/(z-0.934))*(1/z^10)
u=zeros(1,100);
for i=6:1:100
u(1,i)=1;
end
t=1:1:100;
rep=flts(u,tf2ss(h));
plot(t,rep,t,u)
H=time_id(10,'step',rep)
rep=flts(u,tf2ss(H));
Le 10/03/2016 14:42, noguchi a écrit :
Dear Mr.Serge,
Thank you for your information.
It works. Thanks.
May I have your advise on my question No.2 also?
2. Model ID
I would like to identify first or second order transfer function + dead time
from step test data (SISO).
for dead time, it is q
Dear Mr.Serge,
Thank you for your information.
It works. Thanks.
May I have your advise on my question No.2 also?
2. Model ID
I would like to identify first or second order transfer function + dead time
from step test data (SISO).
Can we use subid and ss2tf?
I tf2ss command doesn't work fo
Give a look to the io delay atoms module it may correspond to your whish.
Serge Steer
Le 09/03/2016 16:12, noguchi a écrit :
Hello,
May I ask your help?
1. How can I specify time delay for my transfer function in scilab. I found
it in matlab, but I failed to find it in SCilab.
2. Model ID
I
Hello,
May I ask your help?
1. How can I specify time delay for my transfer function in scilab. I found
it in matlab, but I failed to find it in SCilab.
2. Model ID
I would like to identify first or second order transfer function + dead time
from step test data (SISO).
If it is required to ide
