WOLFRAM SYSTEMMODELER

Factory

Factory model

Diagram

Wolfram Language

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Click for copyable input
SystemModel["SystemDynamics.IndustrialDynamics.Inventory.Factory"]
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Information

This model describes the factory floor. Goods under production are represented by the mass-flow model in the lower part of the graph, whereas incoming orders for these goods are represented by the mass-flow model in the upper-right part of the graph. The signal-flow model represents the control of the production of new items based on the information obtained from the incoming orders.

Public Parameters (12)

AIF

Value: 4

Type: Real

Description: Gain factor for inventory in factory

ALF

Value: 1000000.0

Type: Real (¹/wk)

Description: Manufacturing capacity limit at factory

DCF

Value: 1

Type: Real (wk)

Description: Delay clerical

DHF

Value: 1

Type: Real (wk)

Description: Delay in handling

DIF

Value: 4

Type: Real (wk)

Description: Delay in inventory (and pipeline) adjustment

DPF

Value: 6

Type: Real (wk)

Description: Delay in production lead time at factory

DRF

Value: 8

Type: Real (wk)

Description: Delay in smoothing requisitions

DUF

Value: 1

Type: Real (wk)

Description: Delay due to unfillable orders

RRFini

Value: 1000

Type: Real (¹/wk)

Description: initial requests at retail

RSFini

Value: RRFini

Type: Real

IAFini

Value: AIF * RSFini

Type: Real

UOFini

Value: RSFini * (DHF + DUF)

Type: Real

Connectors (4)

ssf

Type: MassOutPort

Description: Manufactured goods leaving factory

rrf

Type: MassInPort

Description: New order demands

uof

Type: MassOutPort

Description: Unfilled orders

dff

Type: MassOutPort

Description: Desired delay in filling orders

Components (20)

Source1

Type: Source

MDF

Type: Rate_1

Description: New orders arriving

MDF_d

Type: MDF_d

Description: Manufacturing rate at factory

IAF

Type: Level

Description: Produced goods in factory

SSF

Type: Rate_1

Description: Goods leaving factory

SSF_d

Type: SSF_d

Description: Delivery rate at factory

UOF

Type: Level

Description: Unfilled orders

OFD

Type: Rate_1

Description: Orders filled due to delivery

Sink1

Type: Sink

MWF

Type: MWF

Description: Manufacturing demand at factory

MWF1

Type: MWF1

Description: Partial manufacturing adjustment for factory

UNF

Type: Gain

Description: Desired unfilled orders

IDF

Type: Gain

Description: Desired produced goods in factory

LAF

Type: Add

Description: Actual delays in order processing

LDF

Type: Gain

Description: Desired delays in order processing

DFF

Type: DFF

Description: Desired delay in filling orders

STF

Type: Division

Description: Desired order filling rate

SRF_delayed

Type: DELAY1

Description: Delayed new orders

Order_Delay

Type: DELAY3

Description: Delay of processing order due to capacity constraints in factory

Production_Delay

Type: DELAY3

Description: Delay in processing order due to time needed for production

Used in Examples (4)

InventoryForresterStep

SystemDynamics.IndustrialDynamics.Inventory

Inventory simulation with sinusoidal orders

InventoryForresterSinOneYearCapacity

SystemDynamics.IndustrialDynamics.Inventory

Inventory simulation with sinusoidal orders

InventoryForresterSinOneYear

SystemDynamics.IndustrialDynamics.Inventory

Inventory simulation with sinusoidal orders

InventoryForresterNormalNoise

SystemDynamics.IndustrialDynamics.Inventory

Inventory simulation with random orders