ana04.htm

来自「vTools is a toolbox for Matlab 5.3 devel」· HTM 代码 · 共 178 行

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<html xmlns:v="urn:schemas-microsoft-com:vml"
xmlns:o="urn:schemas-microsoft-com:office:office"
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xmlns="http://www.w3.org/TR/REC-html40">

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<body bgcolor=white background="Immagini\sfondo.jpg" lang=EN-GB link=blue
vlink=blue style='tab-interval:36.0pt'>

<div class=Section1>

<p align=center style='text-align:center'><span lang=EN-US><img width=371
height=51 id="_x0000_i1025" src="Immagini\logoana.jpg"></span></p>

<p align=center style='text-align:center'><span lang=EN-US><a
href="HelpDeskmvt.htm" title="MVTOOLS HELP DESK"><b><i>MvTools Help Desk</i></b></a></span></p>

<p align=center style='text-align:center'><span lang=EN-US><img border=0
width=530 height=5 id="_x0000_i1026" src="Immagini\riga.gif"></span></p>

<p align=center style='text-align:center'><span lang=EN-US>Subsection</span><span
lang=EN-US style='font-size:13.5pt'> </span><b><u><span lang=EN-US
style='font-size:13.5pt;color:red'>ROOT LOCUS<o:p></o:p></span></u></b></p>

<p align=center style='text-align:center'><span lang=EN-US><img border=0
width=371 height=249 id="_x0000_i1027" src="Immagini\anaf7.gif"></span></p>

<p style='margin-bottom:0cm;margin-bottom:.0001pt;text-align:justify'><span
lang=EN-US>In this subsection, the user can analyze the transfer functions of
every channel of the current model.</span></p>

<p style='margin-top:0cm;text-align:justify'><span lang=EN-US>The </span><span
lang=EN-US style='color:green'>transfer matrix</span><span lang=EN-US> G of the
model, </span></p>

<p align=center style='text-align:center'><span lang=EN-US style='color:red'>G
= C inv( sI - A ) B +D </span><span lang=EN-US>,</span></p>

<p style='text-align:justify'><span lang=EN-US>is a matrix with as many rows as
the number of outputs and as many columns as the number of inputs, then its
term in position </span><span lang=EN-US style='font-size:10.0pt;mso-bidi-font-size:
12.0pt'>ij</span><span lang=EN-US> represents the transfer function of the
channel from the input </span><span lang=EN-US style='font-size:10.0pt;
mso-bidi-font-size:12.0pt'>j</span><span lang=EN-US> to the output </span><span
lang=EN-US style='font-size:10.0pt;mso-bidi-font-size:12.0pt'>i</span><span
lang=EN-US>. </span></p>

<p style='margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
lang=EN-US>The function associated with the <b>Root Locus</b> command of the
analysis menu or with the pushbuttons <b>&lt;&lt;</b> and <b>&gt;&gt;</b>, in the
window above, evaluates the transfer function of the selected channel, plots
its root locus and computes its poles, transmission zeros and gain, which can
be visualized pressing, respectively, the pushbuttons <b>P</b>, <b>Z</b> and <b>K</b>.</span></p>

<p style='margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
lang=EN-US><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p style='margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
lang=EN-US>The root locus graphic is very useful to analyze the </span><span
lang=EN-US style='color:green'>negative feedback</span><span lang=EN-US> loop</span></p>

<p align=center style='text-align:center'><span lang=EN-US><img border=0
width=294 height=108 id="_x0000_i1028" src="Immagini\Image18.gif"></span></p>

<p style='text-align:justify;page-break-after:avoid'><span lang=EN-US>and shows
the trajectories of the closed-loop poles of the channel when Gain varies from
0 to infinity.</span></p>

<p style='page-break-after:avoid'><span lang=EN-US>&nbsp;</span></p>

<p style='text-align:justify;page-break-after:avoid'><span lang=EN-US>Note:</span><span
lang=EN-US style='font-size:10.0pt'> <i>all the graphics are associated with a </i></span><i><span
lang=EN-US style='font-size:10.0pt;mso-bidi-font-size:12.0pt'><a
href="mod04.htm" title="POPUP MENU help page">popup menu</a></span></i><i><span
lang=EN-US style='font-size:10.0pt'> that can be activated pressing the right
mouse button over them.<o:p></o:p></span></i></p>

<p align=center style='text-align:center'><span lang=EN-US><img border=0
width=536 height=5 id="_x0000_i1029" src="Immagini\riga.gif"></span></p>

<p align=center style='text-align:center'><span lang=EN-US><img border=0
width=536 height=5 id="_x0000_i1030" src="Immagini\riga.gif"></span></p>

</div>

</body>

</html>

ana04.htm - 源码说明

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