Digital Twin Synchronization through DDDAS€¦ · Relationship between the Digital Twin and DDDAS...

Next-Generation Digital Twin

meets DDDAS

Siemens Corporate Technology

Version 5.0

April 2016

Unrestricted © Siemens AG 2016


Corporate Technology

Next-Generation Digital Twin

Digital copy of an object that is created and developed simultaneously with the real object throughout its lifecycle

2016-08-09 DDDAS 2016

• How do we keep the real and digital worlds in sync?

• What new technologies are needed?

• How is it beneficial?

• Are there brand new applications?

• Can we deploy it at scale?

• What’s the connection to DDDAS?



Design of Living Systems

Unconventional Sensing Applications

Digital Twin Interactions

Motivation

Agenda

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Next-Generation Digital Twin meets DDDAS



Motivation

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• Software / Informatics

• Mechanics

• Electrics, Electronics

• Automation, HMI

• Safety, security

• Maintenance

Physical product

Physical production facility

Digital model

• Location, identity…

• Status

• SW version

• Interfaces

• …

Contains all the information on …

+

The digital twin is always up-to-date and is extended over the entire lifecycle

Production Design Production Planning Production

Engineering Production Execution Production Services

Product Design Product Engineering Product Production Product Operation Product Maintenance

*Note: feedback and feedforward loops not visualized



Areas of Interest

Ongoing research in three relevant areas:

• Functional equivalence in Systems-of-

Systems can help us to design, on-the-

fly, alternative system configurations

that accomplish the system goals

• Situational awareness and

identification of new functions and

behaviors through continuous sensing

• Internal interactions: within the Digital

Twin such as its composition and

evolution over the lifecycle

• External interactions: with other Digital

Twins to form Systems-of-Systems and

create new functions

• Ongoing discussion often focused on

“real-to-digital”

• We have identified two interesting

“digital-to-real” applications:

• Cyber-physical security

• As-X synchronization

Digital Twin Interactions Design of Living Systems Unconventional Sensing Applications

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DT DT RT DT DT DT DT

*Definitions:

• DT = Digital Twin

• RT = Real Twin






Motivation

Agenda

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Internal Digital Twin Interactions

Relationship between the Digital Twin and DDDAS

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Reality

Product’s Digital Twin

Experiment/

Field Data

Models CFD

Model

Wind

Tunnel Materials

CAE

Model

Production

Data

CAM

Model

NJ AZ Repair

Perform.

Model

Aging

Model

Sensor data

View 1 View 2 View 4 View 5 View 3

e1 e2 e3 e4

…

Sensor 1 Sensor 2 Sensor N

Dynamic

Feedback

Goal is to enable bidirectional flows of information between data-models and models-models and a dynamic feedback between field data

and models (DDDAS) Product Design

Product Engineering

Product Production

Product Operation

Product Maintenance



External Digital Twin Interactions

Digital Twins and Real Twins interact with each other in space and time forming Systems-of-Systems

Macroscopic view

• Real Twins also generate context information about their

environment, use, and interactions that are impossible, or very

expensive, to model a-priori:

• Emergent behaviors

• Semantic relationships

• Information flows

• Business flows

• These external interactions provide valuable insights that can

be used to optimize the product in the different lifecycle phases

• Next-generation product design

• Prognostics and health maintenance

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Motivation

Agenda

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Acoustic Side Channel Reconstruction from 3D Printers

*In collaboration with UC Irvine (Prof. M. A. Al Faruque)

• Demonstration of digital-to-real information flows

• Cyber-Physical Systems (CPS) leak digital information physically (e.g., sound, heat, electro-magnetic)

• These side-channels can be used to fingerprint CPS

• These fingerprints have implications in cyber-physical security and in automation & control

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*References:

[1] S. Chhetri, et al., "KCAD: Kinetic Cyber Attack Detection Method for Cyber-Physical Additive Manufacturing Systems", ICCAD’16, 2016

[2] M. A. Al Faruque, et al., "Acoustic Side-Channel Attacks on Additive Manufacturing Systems", ICCPS’16, 2016

[3] S. Chhetri, et al., "Poster: Exploiting Acoustic Side-Channel for Attack on Additive Manufacturing Systems", NDSS'16, 2016, *NDSS Distinguished Poster Award*



Digital Twin Updates to Maintain the “As-X” Property

Side-channel data used to maintain the Digital Twins up-to-date and in sync with the real world

Unconventional Manufacturing Sensors

• Side channel data captures process variations that fieldbus

data is unable to capture

• Quantify and propagate process variations that cause

discrepancies between the “As-Designed” information with the

“As-Built”, “As-Serviced”, and “As-Maintained” information

stored in the Digital Twin

• Process variation not only updates the production Digital

Twins, but also can be used to infer the actual state of the

product it is being manufactured

• Side channel feedback control to reduce the process variability

for the next operation or work piece

• Side channel feedforward control to compensate for process

variability introduced by the current machine

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Motivation

Agenda

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Digital Twin for Adaptive Resilience

Functional Modeling

• Existing approaches rely on pre-locating assets (e.g., snow

plows and salt in case of a blizzard)

• A new approach is needed for functional continuity of the

system:

• Functional equivalence identifies alternative function,

behavior, structure configurations to perform effectively the

same function

• Dynamic detection of system needs and priorities is

needed to realize self-awareness

• A scalable approach to composition of a “system of

simulations” with different formalisms and levels of fidelity

to analyze and evaluate potential outcomes

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How can urban infrastructure dynamically reconfigure in case of adverse events?



Thank you!

Contact information

Dr. Arquimedes Canedo

Principal Scientist

Automation and Control

755 College Road East

Princeton, NJ, 08540

E-mail:

[email protected]

Internet

siemens.com/corporate-technology

Intranet

intranet.ct.siemens.com

2016-08-09 DDDAS 2016

mailto:[email protected]

http://siemens.com/corporate-technology



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Digital Twin Synchronization through DDDAS€¦ · Relationship between the Digital Twin and DDDAS...

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