An Enhanced Supervisory Control Strategy for Periodicity Mutual Exclusions in Discrete Event Systems Based on Petri Nets

Figure 7

The firing sequences of (a) six T-Process and three T-Process , (b) three T-Process and six T-Process , (c) five T-Process and four T-Process , and (d) four T-Process and five T-Process .

(a)

(b)

(c)

(d)