On 27.07.2012, at 21:28, Tony Olivo <[email protected]> wrote:
> Hello,
>
> I was playing around learning the control toolbox today, and found
> that I couldn't properly set up a feedback system where sys1 had 2
> inputs and 1 output, and sys2 had 1 input and 2 outputs. I would get
> the error message:
>> error: feedback: range of feedout indices exceeds dimensions of sys1
>> error: called from:
>> error:
>> C:\octave\3.6.2\share\octave\packages\control-2.3.52\@lti\feedback.m at line
>> 131, column 5
>> error: C:\...\ssTest.m at line 15, column 6
>
> I dug in a bit and found that feedback.m at line 130 does this--
>> if (any (feedin > p1 | feedin < 1))
>> error ("feedback: range of feedout indices exceeds dimensions of sys1");
>> endif
> -- checking 'feedin>p1' and 'feedin<1' for the feedout condition. I
> changed both instances of feedin on line 130 to feedout, restarted
> Octave and am able to run my script successfully. You should be able
> to confirm with this script. http://pastebin.com/KDLsYgDy
>
> Thanks,
> -Tony
Hi Tony,
Thank you very much for your useful bug report. I committed the fix:
http://octave.svn.sourceforge.net/viewvc/octave?view=revision&revision=10779
Best regards,
Lukas
BTW: Did you know that instead of
load = ss([],[],[],[0; -1/Ro])
it is sufficient to write
load = ss([0; -1/Ro])
or even
load = [0; -1/Ro]
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