Metrological characteristics of the torque measurement of electric motors

Abstract

This paper proposes a method of determination of the basic metrological characteristics of measurement means (MM) in order to measure the torque of electric motors (EM), such as sensitivity, nominal conversion functions, and additive and multiplicative errors.The nature of change of metrological characteristics was researched using the Measurand Model derived, in the conversion measuring range studied in this paper.Summarised values for additive and multiplicative errors were established for the MM of torque, under the conditions of deviation in terms of the impact value from its nominal value.In addition, the methodology was analysed to enable recalculation of additive and multiplicative errors related to the standard uncertainty of type B. This was undertaken to establish the quality of measurement according to international standards.The research was founded on Measurand Model obtained for multiplicative and additive components in the errors inherent in torque MM.

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