A Digital Twin Needs a Defined Job on the Shop Floor

A detailed three-dimensional model can help people visualise a production system, but appearance alone does not establish its usefulness as a digital twin. The practical question is which decision the digital representation will support and how it remains connected to the physical process.

That purpose determines the necessary detail. A model used to examine material flow may need different information from one intended to investigate machine behaviour. Adding detail without a clear use can increase maintenance work while doing little to improve the answer.

The relationship with real observations needs checking. A model can become less representative when equipment, operating conditions or product specifications change. Comparing its outputs with measurements helps establish where it is useful and where its assumptions need revision. The comparison should remain understandable to the people expected to act on the result.

Introducing a digital twin is therefore an operational project as well as a software project. Someone must own the data, the updates and the evaluation of its performance. A modest model that answers a defined question consistently can be more valuable than an elaborate representation whose connection to the production floor is difficult to verify.