GRAFCET and Petri Nets Outline Introduction GRAFCET - EPFL
GRAFCET and Petri Nets Outline Introduction GRAFCET - EPFL
GRAFCET and Petri Nets Outline Introduction GRAFCET - EPFL
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Evolution rules<br />
p 1 p 2 p 3<br />
2<br />
Exercise - syntax<br />
For each of the graphs below, answer the following questions:<br />
1. Is it a PN ? 2. What are the validated transitions ?<br />
3. What will be the marking after firing ? 4. What are the validated transitions<br />
t 1<br />
t 2<br />
2<br />
p 4 p 5<br />
p 1 p 2 p 3<br />
p 1 p 2 p 3<br />
A B C D E<br />
2<br />
2<br />
t 1<br />
t 2<br />
t 1<br />
t 2<br />
2<br />
2<br />
p 4 p 5<br />
p 4 p 5<br />
F G H I<br />
Real-Time Programming <strong>GRAFCET</strong> <strong>and</strong> <strong>Petri</strong> nets 73<br />
© J.-D. Decotignie, 2007<br />
Real-Time Programming <strong>GRAFCET</strong> <strong>and</strong> <strong>Petri</strong> nets 74<br />
© J.-D. Decotignie, 2007<br />
Exercise – syntax (2)<br />
PN types<br />
For each of the graphs below, answer the following questions:<br />
1. Is it a PN ? 2. What are the validated transitions ?<br />
3. What will be the marking after firing ? 4. What are the validated transitions<br />
Generalized PNs<br />
There a weight on each arc<br />
Can be transformed into ordinary PN<br />
PNs with predicates<br />
Cannot be transformed into ordinary PN<br />
J K L<br />
Marc<br />
X<br />
Y father of X t 1<br />
Y<br />
X<br />
t 1<br />
Y<br />
Luc<br />
Real-Time Programming <strong>GRAFCET</strong> <strong>and</strong> <strong>Petri</strong> nets 75<br />
© J.-D. Decotignie, 2007<br />
Real-Time Programming <strong>GRAFCET</strong> <strong>and</strong> <strong>Petri</strong> nets 76<br />
© J.-D. Decotignie, 2007
Change language