RE: rlocus Step Size Change

[dastew]

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Date: Tue, 10 Nov 2009 17:31:38 -0700
Subject: Re: rlocus Step Size Change
From: address@hidden
To: address@hidden

Doug,

That didn't work, it pulled my locus off the real plane for some reason (which shouldn't happen as I have one zero at +infiniti and my single pole is real). I also just tried adding the step size:

rlocus(sys, stepsize);

which resulted in the same effect as your suggestion. Any other thoughts?

Thanks for your help!

-Dustin B

On Tue, Nov 10, 2009 at 10:01 AM, <address@hidden> wrote:

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Date: Tue, 10 Nov 2009 09:11:10 -0700
Subject: rlocus Step Size Change
From: address@hidden
To: address@hidden

Octave Gurus,

I am trying to change the step size and range of the "gain" of my system while using rlocus and cannot seem to get it to function properly.

I have the following packages installed (control and signal), and am using qtoctave as a GUI front-end.

According to your documentation, I should be able to change the step size following the syntax:

rlocus(sys, [step,min,max]);

Yet, I am getting errors. Is this possible another way, utilizing a k-vector and multiplying into the system transfer function prior to using rlocus? Or am I using this wrong (very likely :])?

Any help you can give me would be great!

Thanks.

Dustin Brothers
MSCD Engineering

try

rlocus(sys, step,min,max);


no [] brackets
Doug


Please send me your sys   or your code.

Doug