managing informal aspects of decision processes for improving reactivity of industrial systems aline...

Managing informal aspects of decision processes for improving reactivity of industrial systems

Aline CAUVIN, Riad MEGARTSIDIAM-IMS

Domaine Universitaire de St-JérômeAvenue Escadrille Normandie-Niemen

13397 MARSEILLE CEDEX 20FRANCE

Control system of the firm

Production process Idea of product

Process modelsProduct models

Raw material

Finished product

Controlling enterprise processes

Objectives & constraintsQuality, cost, time

Objectives & constraintsQuality, cost, time

Objectives & constraintsQuality, cost, time Design

controlsystem

Productioncontrolsystem

Design process

Problematics ( 2 ) Proposals ( 6 ) Implementation ( 5 )

Defining enterprise processes

• Modelling enterprise processes • Elaborating common representation Defining mechanisms

to process disturbances• Analysing disturbances• Modelling reaction processes • Modelling communication networks between

actors

Designing a support to aid enterprise processes control

An approach in disturbed context


Analysing processes in usual context

InputCode

Verb

Human resources

Technical resources

Type (S, I, E)

Performance Indicators

quality

cost

time

required effective

Output


Detectingdisturbance

Reaction process to disturbances

Actor

Reacting

Characterizing

Classifying

Identifying

Storing

Tool for analysing disturbances

Disturbance classification

Actor relay

Representation ofdecision making processes


Disturbance classification : an example


Criteria Categories

Frequency

Importance

Causality

Control

Low : disturbance seldom occurs

Medium : disturbance occurs from time to time

High : disturbance often occurs

Low : consequences of disturbance are not important for production system or its control

Medium : production plans may be modified

High : consequences of disturbance are important or sometimes catastrophic for production

First : causes of disturbance are identified

Second : causes are consequences of previous disturbances. It is necessary to identify initial causes

Total : disturbance is completely controlled

Partial : disturbance is not completely controlled but reaction rules are available and usable

No control : there are no algorithms, rules or methods to face disturbance

Disturbance

Representation of actor relay

Project managerProductionmanager

Dialogue relationship

Operator Quality managerFormal

communication

Informal communication

Order

(1)

(4)

(3)

(2)

(0)


Dialogue relationship

Order

Formal communication

Informal communication

Identified

Disturbance

Modelling reaction processes

Normalfunctioning

Normalfunctioning

Disturbedfunctioning

Process Flow /

Defining involved

actors

Processed

Rejectedsolution

Selectedsolution

Process Flow /

Selectingsolutions


Resolveddisturbance

Process Flow /

Performing solutions

disturbance

Actor involved

Control aided support


Informing Deciding Storing

Functions

Updating Solving

Solving rules

Database Consulting

Identifying

ConsultingDisturbance

database

New disturbance Classifying

Implementing our approach : an example

Mechanical engineering

Electronic engineering

Computer engineeringPrototype

Conceptual elaboration

Virtual/physical modelling

Evaluation of Concepts

Definition of technical specifications

Detailed design

Prototyping

EE

ME

Coordination

information exchanges

Decision making

Conceptual elaboration

Virtual/physical modelling

Evaluation of Concepts

Definition of technical specifications

Detailed design

Prototyping


disturbances

Assem bl yi ng E & S

4. 1

Val i dat i ng pr ot ot ype

18. 1

Assem bl yi ng pr ot ot ype

5. 1

&J 2

Desi gni ng package

2. 1

&J 1

&J 4

Desi gni ng har dwar e

1. 1

Des i gni ng sof t

3. 1

L1 L7L3 L18L9

L6L24

L23L22

Test i ng i nt egr at i on

9. 1

I nt egr at i ng sof t & chi p

8. 1

Per f or m i ng sof t

7. 1

L11L10

Test i ng car d

13. 1

Cabl i ng & wel di ng

12. 1

Per f or m i ng pr i nt ed ci r cui t

10. 1

L14L15

Test i ng package

17. 1

Assem bl yi ng

15. 1

Manuf act ur i ng com ponent s

14. 1

L17L16

P I P I P I

P I P I P I

P IP IP I

P I

P IP I

P I

P I

P I

Assem bl yi ng E & S

4. 1

Val i dat i ng pr ot ot ype

18. 1

Assem bl yi ng pr ot ot ype

5. 1

&J 2

Desi gni ng package

2. 1

&J 1

&J 4

Desi gni ng har dwar e

1. 1

Des i gni ng sof t

3. 1

L1 L7L3 L18L9

L6L24

L23L22

Test i ng i nt egr at i on

9. 1

I nt egr at i ng sof t & chi p

8. 1

Per f or m i ng sof t

7. 1

L11L10

Test i ng car d

13. 1

Cabl i ng & wel di ng

12. 1

Per f or m i ng pr i nt ed ci r cui t

10. 1

L14L15

Test i ng package

17. 1

Assem bl yi ng

15. 1

Manuf act ur i ng com ponent s

14. 1

L17L16

P IP I P IP I P IP I

P IP I P IP I P IP I

P IP IP IP IP IP I

P IP I

P IP IP IP I

P IP I

P IP I

P IP I


Design process


Actor relay

Project manager

Customer

Supplier

Technician

0 1

Manager ofelectronics Dpt

Manager ofmechanics Dpt

Purchasing officer Sales executive

25

89 9

9 94

10

11

External Environment

Internal

Environment

Computer manager

Disturbance

6

7

3


Reaction process

Integration

performed

Integration

validated

Process Flow/Testing

intégration

Integration

non validated

Soft

re-programmed

Process Flow/

Selecting solution

Goto /

Designing Soft

Assemblying E&S

Goto/

Goto /

IntegratingChanged chip

Not available Ordered Received/

Process Flow/Selecting supplier

Process Flow /Requesting component

Available

Goto

Integrating


Proposal for improving actor relay

Project manager

Customer

Supplier

Technician

0 1

Manager ofelectronics Dpt

Manager ofmechanics Dpt

Purchasing officer Sales executive

2

42 2

22

6

7

Computer manager

Disturbance

3

5

Management of reactions to disturbances

Analyzing and characterizing disturbances to evolve reactions

Capitalizing decision processes in order to reuse them for future

reactions

To conclude : interests of the approach

Improving structure and functioning of industrial organizations

Improving knowledge management

Improving communication between actors

managing informal aspects of decision processes for improving reactivity of industrial systems aline...

Documents