Application of a Physico-Mathematical Model of the Torque Measurement Process for Formulating Technical Requirements for the Design of a Reference Installation

Order of the Federal Agency for Technical Regulation and Metrology (Rosstandart) № 2152 of September 6, 2024 «On approval of the State verification scheme for measuring instruments of torque» regulates the transfer of the unit without using standards borrowed from other verification schemes only in the range up to 20 kN · m. However, the current reference base in the Russian Federation has not yet ensured the reproduction of the unit of torque in the range exceeding 20 kN · m.
There is a clear demand from science and industry to expand the capabilities of ensuring the uniformity of measurements in the field of large values of the unit of torque, which requires the creation of an evidence base for formulating requirements for the design of a reference installation for reproducing the unit of torque in the range of large values.
The aim of the study presented in this article is to justify to the professional community the possibilities of applying a physico-mathematical model of the torque measurement process for formulating technical requirements for the design of a reference installation.
Using computer modelling, an analysis of the influence of the components was carried out, and the limiting values of the uncertainty of their determination ensuring the target accuracy indicators of the reference installation were established. An uncertainty analysis of torque reproduction by the reference installation was performed using a physico-mathematical model of the static torque measurement process.
As a result, the uncertainty components were ranked according to their degree of influence on the measurement result. Components requiring the application of special technical solutions were identified. Technical requirements for the design of the reference installation were determined.
The obtained results can be used in the design of components of the reference installation, namely, for determining the requirements for the manufacture of parts, the selection of materials, and the formulation of the measurement equation of the reference installation.

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