Читать книгу Control Theory Applications for Dynamic Production Systems - Neil A. Duffie - Страница 34
Example 2.10 Production System Lead Time when WIP and Capacity are Variable
ОглавлениеIn the case where the production work system illustrated in Figure 2.15 has variable work in progress (WIP) w(t) hours and variable production capacity r(t) hours/day, the lead time is
For work in progress operating point wo and capacity operating point ro, an approximating linear function for lead time in the vicinity of operating point wo,ro, can be obtained using Equations 2.5 and 2.6:
where
