IIC Journal of Innovation 12th Edition | Page 111

Digital Twin in Industrial Application – Requirements to a Comprehensive Data Model
necessary to possess a framework for deter-
mining the contents of partial models.
C ONCLUSION
To permit the practical application of exist-
ing digital twin models, it is necessary to en-
rich existing models with proposals relating
to their content and structure. If it is possible
to link these content elements with generic
use cases, then this will support the effective
applicability and interoperability of digital
twins, for example between the stakehold-
ers in a supply-chain. In this paper, we have
used example cases to show how such deri-
vations are possible. For implementation,
we recommend the close coupling with PLM
systems and an open protocol in the form of
the Eclipse Ditto project.
Process models in the fields of project man-
agement or quality control, for example, of-
ten permit customizing. For example, the de-
velopment of a variant does not require the
same full-blown development process as is
needed in the case of new products.
Consequently, the framework for model
contents would have to establish a relation
between different use cases in the supply
chain and their related requirements, on the
one hand, and the digital twin data model on
the other. When requesting data from sup-
pliers, it would only be necessary to quote a
use case taken from a standardized set. Sys-
tem models (such as SysML) could also be
created to permit a machine-interpretable
description of use cases.
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November 2019