WOLFRAM SYSTEM MODELER

InventoryForresterStep

Inventory simulation with sinusoidal orders

Diagram

Wolfram Language

In[1]:=
SystemModel["SystemDynamics.IndustrialDynamics.Inventory.InventoryForresterStep"]
Out[1]:=

Information

Customer Demand Step

The fourth simulation involves a step in the incoming orders:

RRR(t) = RRRini + if time > 10 then RRRoffset else 0;


Simulate the model across 90 weeks, and plot on one graph the incoming orders and the production flow in the factory and on a second graph the levels of goods in retail, distribution, and the factory as functions of time:


Parameters (3)

RRRiniTop

Value: 1000

Type: Real (1/wk)

Description: Inital value of customer requests at retail

RRDiniTop

Value: RRRiniTop

Type: Real (1/wk)

Description: Inital value of requisitions received at distribution

RRFiniTop

Value: RRRiniTop

Type: Real (1/wk)

Description: Inital value of requisitions received at factory

Outputs (5)

orders

Type: Real (1/wk)

Description: Sinusoidal orders

factoryFlow

Type: Real (1/wk)

Description: Manufacturing flow at factory

retailStock

Type: Real

Description: Stock of goods in retail

distributionStock

Type: Real

Description: Stock of goods in distribution

factoryStock

Type: Real

Description: Stock of goods in factory

Components (4)

Factory1

Type: Factory

Description: Factory model

Distribution1

Type: Distribution

Description: Distribution model

Retail1

Type: Retail

Description: Retail model

Orders

Type: Step

Description: Generate step signal of type Real