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Control Package Changes May Cause VLFamp Example to Fail


From: Thomas D. Dean
Subject: Control Package Changes May Cause VLFamp Example to Fail
Date: Mon, 9 Oct 2017 22:54:55 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0

The VLFamp example fails for control 3.0.0

The problem is at line 217 of VLFamp.m

octave:47> TFnorm

Transfer function 'TFnorm' from input 'u1' to output ...

             2.326e-07 s + 1
 y1:  -----------------------------
      1.818e-08 s^2 + 0.01818 s + 1

Continuous-time model.
octave:48> step(TFnorm,'b')
out of memory or dimension too large for Octave's index type
error: called from
    __sys2tf__ at line 35 column 16
    tf at line 193 column 16
    tfdata at line 62 column 9
    __c2d__ at line 71 column 18
    c2d at line 82 column 7
    __time_response__ at line 116 column 7
    step at line 74 column 10

Tom Dean



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