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ViDiT Project To Ensure Reliability and Trustworthiness of Digital Twins in Metrology

In May 2023, the research project ‘Trustworthy virtual experiments and digital twins’ (ViDiT) commenced. ViDiT is a metrology project funded by the European Union. The consortium of the three-year project consists of 21 institutions: eight National Metrology Institutes, two research centres close to industry, five universities and six companies. The project is coordinated by Physikalisch-Technische Bundesanstalt (PTB).

Virtual experiments and digital twins are key enabling technologies to achieve and realise European strategic policies devoted to digitalisation and sustainability within the complex framework of Industry 4.0. Virtual experiments and digital twins are both simulation models that accurately replicate physical systems and characteristics in a virtual environment. Digital twins further include dynamic updates of the virtual model according to the observed state of its real counterpart. Hence, they consist of two parts, a Physical‑to‑Virtual connection that models the considered system and a Virtual‑to‑Physical connection that implements prevention and control strategies to achieve the target accuracy in the physical system.

The use of virtual experiments and digital twins in metrology applications requires uncertainty evaluation methods, as well as reliable validation procedures, to make them fit, e.g. as substitutes or extensions, to certified measurement devices.

The ViDiT project will develop these methods and procedures to ensure the reliability and trustworthiness of virtual experiments and digital twins in metrology. The four technical work packages and selected applications of the project (coordinate measuring machine, tilted wave interferometer, flow measurement, 3D robotic measurement, nanoindentation, NanoCyl, and electrical measurement) are shown in the figure below. In addition, this will enable the traceability of modern measurement systems and will boost and strengthen the European lead in this field.

To facilitate the uptake of the developed methods, by National Metrology Institutes and industrial stakeholders, three good practice guides will be written, and the applicability of the methods will be demonstrated in twelve case studies covering the aforementioned industrial metrology applications.

Illustration of the four technical work packages of the ViDiT project, as well as the seven different metrological applications considered throughout the project.

The project has received funding from the European Partnership on Metrology, co-financed from the European Union’s Horizon Europe Research and Innovation Programme and by the Participating States.

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