Re: control problem: lsim

[Doug Stewart]

On Sun, Feb 24, 2013 at 5:17 PM, Rudolf Widmer-Schnidrig <address@hidden> wrote:

Dear Lukas, dear List,

What is the best way to evaluate the quality of a LTI model
which I have obtained like this

octave> dat = iddata(yout,xin);      % yout is observed output to input xin
octave> sys = arx (dat,'NA',2,'NB',1')

>From the control manual I expected that I could run

octave> lsim(sys,xin)

to predict the output for input xin given the system sys.

but I get the error: lsim: input vector u must have 2 columns

what am  missing?

       many thanks in advance,             -Ruedi

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              Rudolf Widmer-Schnidrig
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this is just guess

does sys have two inputs??? if it does then you would need an input vector for each input

--

DAS

https://linuxcounter.net/user/206392.html