数字孪生MIT ppt课件.ppt

Are physical products and models of product two separate things?
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© 2017 Donna H. Rhodes
Business portfolio
model
product
“ghost in the machine” – Ryle (1949) used the term to denote the view (with which he disagreed) of the human mind as being completely separate from and independent of the physical body.
Product+ Digital Twin
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© 2017 Donna H. Rhodes
What is a Digital Twin?
A digital replica of a product or system, maintained as
a virtual equivalent throughout the lifespan of the physical product.
Image credit: GE Power & Water
A dynamic software model that uses sensors and other data to analyze its state, respond to changes, and improve operations.
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© 2017 Donna H. Rhodes
NASA – Pairing digital and physical
Pairing of digital objects and physical objects pioneered by NASA in early days of space exploration.
Motivated by challenge of designing things that travel beyond ability to immediately see, monitor or modify them.
Objective was a complete digital model that can be used to operate, simulate and analyze an underlying system governed by physics.
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© 2017 Donna H. Rhodes
Mirrored Spaces (Grieves, 2002)
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© 2017 Donna H. Rhodes
Digital Twin Definitions (Grieves)
Digital Twin Prototype: information necessary to describe and produce a physical version that duplicates the virtual version
Digital Twin Instance: describes a specific corresponding physical product, remaining linked to it throughout its lifespan
Digital Twin Aggregate: aggregation of all DTIs for a set of products
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© 2017 Donna H. Rhodes
Purposes of the Digital Twin
Descriptive
Interrogative
Analytic
Diagnostic
Predictive
Anticipatory
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© 2017 Donna H. Rhodes
Digital thread
digital thread refers to the communication framework that allows a connected data flow and integrated view of the asset’s data throughout its