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In contrast to traditional digital models, digital twins can connect with the physical ‘twin’ they model, changing alongside the physical system via real-time sensors and actuators.

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02: Overview of Package 'twin' and notations
03: Focus BDD for the DigitalTwin block
Webel Twin Pattern: A PotentialPhysicalAsset is «digital», not «physical». It is used to acquire (an existing) or create (build, manifest, make) an «physical» ActualPhysicalAsset, which is a special case of «physical» PhysicalEntity.
Webel Twin Pattern: A «digital» DigitalEntity (a.k.a. @Entity) is NOT a representation! It is a digital encapsulation (it can only be perceived at the level of "bits and bytes"). It HAS many representations (such as views)!
Webel Twin Pattern: The primary aim of the digitalEntity:@Entity of a DigitalTwin is to replicate its physical:PhysicalEntity as closely as possible (not to explore variants).
Webel Twin Pattern: A DigitalTwin may use one or more variantEntity:@Entity[0..*] to explore the impact of changes (optimisation studies, trade off studies) and then use them to drive the PhysicalEntity into a desired state (via its ControlSystem).
07: BDD of twin control loop Blocks
08: IBD of basic twin control loop
09: IBD of DigitalTwin
10: Process overview
11: Example: Twinning a construction Pipe
12: Overview of 'pipe' package
13: PipeDigitalTwin instances
14: IBD for PipeDigitalTwin flow control
01: Digital twin «snippet» text extracts from ANZLIC 2019
16: Overview of 'building' package
17: Staging BDD for working environment temperature vs building energy consumption control loop
18: IBD for working environment temperature vs building energy consumption control loop
Source
ANZLIC 2019 - Principles for Spatially Enabled Digital Twins of the Built and Natural Environment in Australia
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Creative Commons Attribution 4.0 International
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In contrast to traditional digital models, digital twins can connect with the physical ‘twin’ they model, changing alongside the physical system via real-time sensors and actuators.
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Digital twins are dynamic, data driven, multi-dimensional digital replicas of a physical entity.
They encompass potential or actual physical assets, processes, people, places, systems, devices and the natural environment.
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Traditionally, industry has created digital twins by retrospectively mapping, scanning, surveying, digitising or developing a digital copy of a real world object.
Today this process can occur in reverse, with the digital model developed first followed by the physical asset.
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