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<html><head><title>PID Control Panel :: Getting started with AutotunerPID Toolkit (AutotunerPID Toolkit)</title>
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<td valign=baseline bgcolor="#ffe4b0"><b>AutotunerPID Toolkit</b></td>
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<a name="process_identification"></a><!-- H1 -->
<p><font size=+2 color="#990000"><b>PID Control Panel</b></font><br>
<p>The <em>PID Control Panel</em> is designed to closer resemble
the layout of a typical real industrial autotuner (at least in the control
options).</p>
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<td align="center"><strong>Linux</strong></td>
<td align="center"><strong>Windows</strong></td>
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<tr><td align="center"><img src="images/ControlPanelLinux.png"></td>
<td align="center"><img src="images/ControlPanelWindows.png"></td>
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<p>In the following we will briefly summarize the characteristics of this
interface, which is mainly split in four areas.</p>
<p><ul><table border=1 cellspacing=0 cellpadding=5 width="90%"><tr>
<td bgcolor="#ffe4b0"><b>Note </b> The GUIs control the value of the <em>set-point</em>, <em>load
disturbance</em> and
<em>measurement noise</em> through a reference to the name of the corresponding blocks. It is suggested
that you DON'T change the name of this block. If you do this, you must also change the reference
in the masks of the block "PID Control Panel" and
"Environment Panel"</a></td>
</tr></table></ul></p>
<a name="parameters_area"></a><!-- H2 --><a name="t1"></a>
<p><font size=+1 color="#990000"><b>Process Controls</b></font><br>
<p>The upper part of the GUI is used to interact with the control system:
<ul>
<li><strong>Changing the set-point value (SP)</strong> through the <em>SP slider</em> or the <em>SP text field</em>.
The value of the set-point is also shown graphically by the yellow triangle on the PV axis;</li>
<li><strong>Reading the process value (PV)</strong> through the <em>PV axis</em> or the <em>PV text field</em>;</li>
<li><strong>Reading the value of the control variable (CV)</strong> through the <em>CV axis</em> or the <em>CV text field</em>
when the regulator is in <em>Auto</em> mode or <strong>changing the CV</strong> through the <em>CV-MAN slider</em>
or the <em>CV text field</em> when the regulator is in <em>Manual</em> mode.
</ul></p>
<a name="parameters_area"></a><!-- H2 --><a name="t2"></a>
<p><font size=+1 color="#990000"><b>Parameters</b></font><br>
<p>It shows the current values of the six ISA-PID parameters (<font face="Courier New, Courier, mono">K</font>,
<font face="Courier New, Courier, mono">Ti</font>, <font face="Courier New, Courier, mono">Td</font>,
<font face="Courier New, Courier, mono">N</font>, <font face="Courier New, Courier, mono">b</font>,
<font face="Courier New, Courier, mono">c</font>). All the parameters are editable
except the weight of the derivative action that is constant (<font face="Courier New, Courier, mono">c=0</font>).
The changes affect the system immediately.</p>
<a name="operating_mode_area"></a><!-- H2 --><a name="t3"></a>
<p><font size=+1 color="#990000"><b>Operating Mode</b></font><br>
<p>It allows to controls the running mode of the PID regulator system. In <em>Auto</em> mode,
the value of the control variable is computed by the PID regulator, and the
CV-MAN slider and the CV edit area are both disabled. In <em>Manual</em>
mode the CV is defined manually by the user with either the CV-MAN slider
or the CV edit area.</p>
<p>Autotuning can be performed either in Manual or in Auto mode. In the first case, however, the PID regulator does not
commute automatically to Auto mode after the completion of the autotuning process.</p>
<a name="operating_mode_area"></a><!-- H2 --><a name="t4"></a>
<p><font size=+1 color="#990000"><b>Autotuner</b></font><br>
<p>It manages the autotuning process, through the following settings:</p>
<ul>
<li><strong>Identification method</strong>:
a pop-up menu that allows the selection of the desired Identification Method (<a href="autopid_in3.html#t1">Areas</a>,
<a href="autopid_in3.html#t2">Relay</a>);</li>
<li><strong>Tuning method</strong>:
a pop-up menu that allows the selection of the desired Tuning Method (<a href="autopid_in4.html#t3">IMC</a>, <a href="autopid_in4.html#t2">KT</a>,
<a href="autopid_in4.html#t1">ZN(OL)</a>, <a href="autopid_in4.html#t4">ZN(CL)</a>). If the IMC method
is selected, the <font face="Courier New, Courier, mono">lambda</font> parameter must be chosen. If
the KT method is selected the
<font face="Courier New, Courier, mono">M<sub>s</sub></font> parameters must be chosen between two
values (1.4 or 2.0);</li>
<li><strong>Structure</strong>:
a pop-up menu that allows the selection of the regulator structure: PI, PID or auto (the tool automatically chooses
the "best" one);</li>
<li><strong>Autotune button</strong>:
used to start the autotuning process (including the identification experiment and the synthesis of the parameters).
The PID parameters are updated at the end of the autotuning process. During the autotuning process the interface is
"frozen" to prevent changes in the PID parameters or in the operating conditions.</li>
</ul>
<br>
<p><table bgcolor="#ffe4b0" border=0 width="100%" cellpadding=0 cellspacing=0><tr valign=top><td align=left width=20><a href="autopid_si2.html"><img src="b_prev.gif" alt="Previous page" border=0 align=bottom></a> </td><td align=left> Setting up the Simulation</td><td> </td><td align=right>Environment Panel </td><td align=right width=20><a href="autopid_si4.html"><img src="b_next.gif" alt="Next page" border=0 align=bottom></a></td></tr></table>
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