4.7 Article

Building a right digital twin with model engineering

Journal

JOURNAL OF MANUFACTURING SYSTEMS
Volume 59, Issue -, Pages 151-164

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.jmsy.2021.02.009

Keywords

Digital twin; Model engineering; Modeling and simulation; Complex system

Funding

  1. National Key RAMP
  2. D Program of China [2018YFB1701600]

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The concept of digital twin is gaining more attention, but there is no consensus on the definition of a right digital twin. This paper introduces some basic principles and metrics for a right digital twin, and proposes an evolutionary concurrent modeling method to guide the modeling process.
In recent years, the concept of digital twin (DT) is attracting more and more attention from researchers and engineers. But there is still no consensus on what a right DT is. On one hand, some common models are renamed as DTs. On the other hand, some DTs extremely pursue 'the same' as physical objects, which bring unnecessary complexities to them. In this paper, we try to answer two questions from the point of view of model engineering: how to define a right digital twin, and how to build a right digital twin. The concept and related technologies of model engineering are introduced. Some basic principles and a set of metrics for a right DT are given. An evolutionary concurrent modeling method for DT (ECoM4DT) is proposed not only inheriting the theory from classic M&S methods but also highlighting the characteristics of DT compared with traditional models to systemically guide the DT modeling process.

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