ii34ptimedpetrinets.htm
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<title>II.3.4. P-timed Petri Nets</title>
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<p class=heading-2>II.3.4. P-timed Petri Nets</p>
<p class=heading-2-p> </p>
<p align="justify" class=normal>For <i>place-timed</i> PNs (P-timed PNs), time durations
can be assigned to the places; tokens are meant to spend that time as reserved
in the corresponding places, immediately after their arrival. In simulation,
all the transitions that can fire due to the current marking, fire at the same
time. A transition can fire several times, in accordance with the marking of
its input places and, from the theoretical point of view, an infinitesimal delay
is considered to separate any two successive firings.</p>
<p align="justify" class=normal> </p>
<p align="justify" class=normal> For the time durations assigned to the places,
appropriate functions can be used to generate random sequences corresponding
to probability distributions with positive support. During the simulation, the
places that contain reserved tokens get the white color (default) or a color
selected by using the option <a href="i25simulationmenu.htm#Pref"><b><i>Simulation/Preferences</i></b></b></a>.</p>
<p align="justify" class=normal> </p>
<p align="justify" class=normal>The <a href="ii37diary.htm"><b><i>Diary</i></b></b></a>
facility opens a new window that displays (dynamically) the instant(s) when
the next fireable transition(s) is (are) to fire.</p>
<p align="justify" class=normal> </p>
<p align="justify" class=normal>The <b><i><a href="ii38scope.htm">Scope</a></i></b>
facility opens a new figure window that displays (dynamically) the evolution
of the selected performance indices. The final value of the global index shown
by the Scope is identical to that displayed on request, at the end of simulation,
when the user explores the <b><i><a href="i26performancemenu.htm">Performance</a></i></b>
menu.</p><hr>
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