Noel - Chap 2 - Model Integration For DT Flashcards
Quel est le schéma dans digital Twin
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
Quel est le process de déploiement d’un digital Tween
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
Quelles sont les problèmes qu’il peut y avoir dans les infrastructures de D.T.
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
ou est ce qu’on va foutre l’intelligence dans tout cela : ou sera les systeme et les data
● 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)
Difference between Bandwith and Latency
Différence entre la largeur de bande et la latence
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).
Quels sont les problèmes d’informations
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 ?
Quels 3D models on peut utiliser et quel level de détail (question ouverte)
We have many models : CAD, Manufacturing models, mecanisms, etc
- kinematics
- bill of material
DT utilise obligatoirement un model 3D ?
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
Est ce qu’on peut utiliser DT pour production ?
OUI
Workfloor simulation flow
pour simuler les flux de productions
Qu’est ce qu’une API ?
application programming interface
Quels sont les problèmes rencontré dans les simulations
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
How Synchronisation of virtual and physical words
● 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
Site un exemple d’usine qui utilise un digital twin
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
Exemple de work station training activity
• The workstation model comes from the DT
• Comparison of several devices
– Paper instruction
– Tactile table based dynamic instructions
– Hololens based dynamic instructions
exemple d’utilisation de RA sans digital twin
Positionning sensors (GSCOP proof of concept) RA support for positionning sensors Simplified virtual model Synchronisation of every operations
explique l’exemple de la boule avec les capteurs
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
Overall methodology ?
- Use case analysis (As is)
- Roles
- Data flows
- Hardware and Software available
- Complete use case formalisation
- Expected added value
- Functional analysis (AMDEC)
- Lean analysis (waste)
- Difficulties
- Repetitive tasks
- Vision (To be process)
- Imagine the usage of new technologies
- Think automatisation
- Think collaboration
- Think expertise added value
- Build a new process
- Estimate a ROI
- Identify expected infrastructures
- Data sources
- Computer networks
- Data exchange
- protocoles
- models translation
- models integration
- Analysis key
- Decision making
- Optimisation
- Artificial Intelligence
- IOT
- RV
- RA
- Cobotique
- BIG DATA
- Proof of concept development
- Tests
- Deployment
Individual exercise
● 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.
