Noel - Chap 2 - Model Integration For DT Flashcards

1
Q

Quel est le schéma dans digital Twin

A

Le vrai espace envoi de la data à l’espace virtuel qui lui va lui renvoyer des informations
Cet espace virtuel dialogue avec une intelligence artificielle deep learning
Il est logé également avec des simulations du big data analyse des Dashboard et de la virtuelle réalité
Il a besoin de l’intégration de plusieurs sources

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2
Q

Quel est le process de déploiement d’un digital Tween

A

En premier on a le cas detude identification

Ensuite l’identification de la de l’infrastructure des simulations et des sources d’information

Ensuite les spécifications donc les investissements en infrastructures l’intégration du frameword

La construction de l’infrastructure

L’implémentation des fonctions duquel étude

Le teste et le déploiement

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3
Q

Quelles sont les problèmes qu’il peut y avoir dans les infrastructures de D.T.

A

We need communication
–> Networking facilities : you must investigate the network
capacity of the company for its business applications. The key
concepts are :
● Bandwith (the number of octet per second)
● Latency (the delay between send and reception events)
● Type of connexion : 3G, 4G, Fiber
● Interruption risks
________________
–> You can be restricted to local saved data (recording black box
with more or less regular connexion)
● A product may get an embedded information storage
● Update information frequency is a key issue

–>Cyber security issues

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4
Q

ou est ce qu’on va foutre l’intelligence dans tout cela : ou sera les systeme et les data

A
● System types:
– Embeded systems
– Distributed agents
– Centralised servers and interaction client
● Data location:
– on a single server
– replica policy
● Main issue: real time definition (1ms, 1s, 1min, 1 day delay, 1 month delay, etc)
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5
Q

Difference between Bandwith and Latency

Différence entre la largeur de bande et la latence

A

En informatique, la latence (ou délai de transit, ou retard) est le délai de transmission dans les communications informatiques (on trouve parfois l’anglicisme lag). Il désigne le temps nécessaire à un paquet de données pour passer de la source à la destination à travers un réseau.

La largeur de bande est la plage de fréquences d’une source de vibration. On peut aussi parler de largeur de spectre. Elle correspond à l’encombrement spectral, c’est-à-dire l’intervalle entre les fréquences basse et haute utilisées par la source de vibration (sonore, radio ou optique).

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6
Q

Quels sont les problèmes d’informations

A

A* is a model of A for O, an observer
If and only if
A* allows O to answer questions about A

Which interaction with
systems ?
Which interconnexion ?
Which model ?
Where should we save information ?
What do we observer ?
How do we act on the system ?
Which expert rules ?
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7
Q

Quels 3D models on peut utiliser et quel level de détail (question ouverte)

A

We have many models : CAD, Manufacturing models, mecanisms, etc

  • kinematics
  • bill of material
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8
Q

DT utilise obligatoirement un model 3D ?

A

NO
We do not always have 3D models
● 3D models not adapted for most production
applications
● Need to evaluate use case for production
● May require scan process the simplification
and idealisation
It can be used to initialise a digital twin
Or to correct a digital twin (nuclear plants)
Or for a single task

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9
Q

Est ce qu’on peut utiliser DT pour production ?

A

OUI
Workfloor simulation flow

pour simuler les flux de productions

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10
Q

Qu’est ce qu’une API ?

A

application programming interface

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11
Q

Quels sont les problèmes rencontré dans les simulations

A
Old mode simulations are based on heavy
preparation to create a dedicated mode
Resolution time is not interactive
● Finite element method
● Production simulation
With new technologies we expect
● realtime simulation
● Natural interaction with simulation
We could expect new type of simulation
which are driven directly by end-users
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12
Q

How Synchronisation of virtual and physical words

A
● Sometimes may be automated
– Usual Supervision
– Grow up sensors
● Often based on operator
actions. If we change the
real world:
– we need to update the
digital twin
– or inform about the
changes and get a back
office to maintain virtual model
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13
Q

Site un exemple d’usine qui utilise un digital twin

A
Definition of a digital chain to produce a DT
Operational tools :
● Supervision : KPIs
● Production Operation management
● Simulation of production
● Connected applications to extend
usage of the DT
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14
Q

Exemple de work station training activity

A

• The workstation model comes from the DT
• Comparison of several devices
– Paper instruction
– Tactile table based dynamic instructions
– Hololens based dynamic instructions

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15
Q

exemple d’utilisation de RA sans digital twin

A
Positionning sensors (GSCOP
proof of concept)
RA support for positionning
sensors
Simplified virtual model
Synchronisation of every
operations
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16
Q

explique l’exemple de la boule avec les capteurs

A
SCOP
proof of concept)
RA support for positionning
sensors
Simplified virtual model
Synchronisation of every
operations

Acoustic emission testing (AE or AT)
ultrasound is emitted and reflected by the
change of medium
by analysing the feedbacks a crack is located.
For a big structure the technique uses a network
of sensors
spread on the structure

–> Le process
At operational level :
- to install sensors on the structure respect the de design office plan
- to connect sensors
- to emit ultrasounds and to record answers
- to compare physical answer with theorical simulations
- to locate cracks on the physical system
- to apply corrections

–> Digitalisation du process

Expected advantages :

  • better communication between design office and operators
  • time saving : about 2 to 3 days
  • keep security : easier work
  • better quality : better positionning of sensors and capacity to check l ocations

–> To improve sensor position
Augmented reality application
• To remove traditional measuring system
• Direct positionning sensors

17
Q

Overall methodology ?

A
  1. Use case analysis (As is)
  2. Roles
  3. Data flows
  4. Hardware and Software available
  5. Complete use case formalisation
  6. Expected added value
  7. Functional analysis (AMDEC)
  8. Lean analysis (waste)
  9. Difficulties
  10. Repetitive tasks
  11. Vision (To be process)
  12. Imagine the usage of new technologies
  13. Think automatisation
  14. Think collaboration
  15. Think expertise added value
  16. Build a new process
  17. Estimate a ROI
  18. Identify expected infrastructures
  19. Data sources
  20. Computer networks
  21. Data exchange
  22. protocoles
  23. models translation
  24. models integration
  25. Analysis key
  26. Decision making
  27. Optimisation
  28. Artificial Intelligence
  29. IOT
  30. RV
  31. RA
  32. Cobotique
  33. BIG DATA
  34. Proof of concept development
  35. Tests
  36. Deployment
18
Q

Individual exercise

A

● Identify a professional situation you experienced (training period). If
not you can model the school activities
● Identify the information expected in this global activity
● Identify the roles (type of actors)
● Identify the tools supporting activities
● What are the relations between tools, information, and activities
● Discuss how digital processes could improve the process.