1、订货提前期10个时间单位，每次订购使库存量最大，订货批量为maxstock-storeqty
缺货损失费为每件0.5。库存费为每件0.1。订货固定成本32，变动成本每件3。（单位：元）
2、该系统WITNESS仿真模型界面
3、part元素customer细节设计
type:active
input to model.inter arrival:5
lot size:1
inputto model.to…:push to ship
action on create:
batch = ra (1)
ICON = 87"
对buffer元素storehouse细节设计
Capacity:1000
part元素product细节设计
type:active
input to model.inter arrival:1
lot size:1
PUSH to SERVED
action on create:
ICON = 37 !
storecost = storkqty * 0.1 + storecost
cost = storecost + lostrate + c
对path元素go的设计
Go.Path traverse time:15
Go.Path update interval:0.01
Go.Sourse element:customer
Go.Destination:storehouse
对path元素away的设计
away.Path traverse time:10
away.Path update interval:0.1
away.Sourse element: delivery
away.Destination: ship
对machine元素delivery细节设计
Type:single
Input.from: pull from storehouse
Duration.cycle time:1
Output.to…:push to ship using path
Action on create:
IF storkqty < batch
getqty = storkqty
lostrate = batch - storkqty + lostrate
ELSE
getqty = batch
ENDIF
Storkqty = storkqty – getqty
对conveyor元素road的设计
Length in parts:10
Index time:1
Input(from…):
IF storkqty < minstock AND NENTS (road) < 1
PULL from product out of WORLD
ELSE
Wait
ENDIF
Action on
Join:
c = 32 + (maxstock - storkqty) * 3 + c
front:
storkqty = maxstock
output(to…):
PUSH to ship
对initialize action的设计
storkqty = 30
maxstock = 40
minstock = 20
