The Data Centric Architecture of a Factory Digital Twin
Figure 5-2 : The predictions of the FDT can be published in the VirtECS / Symphony web-based environment . ( Source : www . combination . com )
5.2 EXAMPLE APPLICATIONS OF AN FDT
To illustrate the discussion above , the next three sections provide specific example FDTs . The first two examples consider two case studies involving two-stage processes that make two products . Prod1 and Prod2 are made in a continuous process on equipment R1 . The tasks making Prod1 and Prod2 require precursor materials Prec1 and Prec2 respectively , which are made on equipment T1 . There are no transitions between Prod1 and Prod2 , but switching tasks on T1 requires a 4-hour transition . There is somewhat regular demand for both products . The third example is for a more complex cell culture-based process . The data provided in Table 5-2 and Table 5-3 is the information needed to create the RTN for the first two examples . The third larger example is drawn from biologics drug substance manufacture , which summarizes a case study of an industry partner .
5.2.1 FDT ANALYSIS EXAMPLE 1
Figure 5-3 shows a two-month schedule satisfying the demand pattern . Because all tasks are continuous and the precursor materials must be available before starting the final tasks , there is an offset between the two production stages .
110 February 2025