The Data Centric Architecture of a Factory Digital Twin
Figure
5-6 : Equipment T1 contains transitions ( orange bars ) that reduce capacity .
The plot at the bottom of Figure 5-6 shows the inventory of Prod1 . We can see that production closely matches demand due dates so that final product inventory is kept close to a minimum . But every time a campaign of Prod3 is made , the resulting down time on R1 costs capacity . This effect can be ameliorated by running fewer but long campaigns of Prod3 as shown Figure 5-7 .
Figure 5-7 : Campaigning to reduce transitions .
Here we serve the same three demands for Prod3 , but run only a single campaign , early enough for the first demand and large enough to serve all three demands . Of course , this results in
114 February 2025