(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I'm trying to analyze the root locus of this transfer function in Matlab to control a DC motor:

mysys=tf([0.022],[0.00000000007 0.0000000626 0.000493])

3. The attempt at a solution

Using:

%[Kp,P]=rlocfind(mysys)

%rltool(mysys)

rlocus(mysys)

I get a root locus that looks somewhat odd and I'm not really sure how to interpret it. It doesn't appear to be stable at all gains. Although, it does look a bit better when I add a zero inrltoolto the right of that gap and then it seems stable at all gains.

Help? I'm lost.

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# Homework Help: Matlab Root Locus Analysis

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