Modelling and Processing Measurement Uncertainty within the Theory of Evidence

2006 ◽  
Author(s):  
A. Ferrero ◽  
S. Salicone
Keyword(s):  
Measurement Uncertainty ◽  
Processing Measurement ◽  
Theory Of Evidence

Study on Random-Fuzzy Variables Method for ADC Measurement Uncertainty Evaluation

2014 ◽  
Vol 568-570 ◽  
pp. 76-81
Author(s):  
Wei Jiang ◽  
Qi Zhang
Keyword(s):  
Measurement Uncertainty ◽  
Random Effects ◽  
Uncertainty Propagation ◽  
Uncertainty Evaluation ◽  
Fuzzy Variables ◽  
Measurement Result ◽  
Random Fuzzy Variables ◽  
Theory Of Evidence ◽  
Power Measurements ◽  
Measurement Uncertainty Evaluation

The random-fuzzy variables (RFVs) method based on the theory of evidence is studied, for the need of ADC uncertainty evaluation and the limitations of existing approaches. The connotation of RFVs adopted for expression of measurement result together with its associated uncertainty is discussed, and the RFVs mathematics for uncertainty propagation is analyzed. RFVs can naturally separate the contributions to the measurement uncertainty of the systematic and random effects. Taking power measurements as an example, RFVs method is applied to the presentation and propagation of the measurement uncertainty of ADC, and the results are compared with those obtained by GUM, which shows the RFVs method can be effectively employed in evaluating uncertainty of ADC, and is capable of providing the interval of confidence for all possible levels of confidence, within which the measurement result is supposed to lie.

National primary standard machine of Shore D hardness scale for metals and Leeb hardness scales

2020 ◽  
pp. 6-10
Author(s):  
A.E. Aslanyan ◽  
E.G. Aslanyan ◽  
S.M. Gavrilkin ◽  
A.S. Doynikov ◽  
A.N. Shchipunov
Keyword(s):  
Measurement Uncertainty ◽  
Primary Standard ◽  
Metrological Characteristics ◽  
National Primary Standard ◽  
Hardness Scale ◽  
Leeb Hardness

The article presents the results of studies to improve the National primary standard machine for hardness of metals on the shore D scale GET 161-2001, which were performed in FSUE “VNIIFTRI” from 2016 to 2018 in accordance with the technical task of Rosstandart.The improvement was carried out in order to ensure the uniformity of hardness measurements on the Leeb scales. The created new parts of the primary standard machine, which are settings for reproducing hardness numbers on the Leeb scales, are considered. Metrological characteristics of the upgraded and adopted National primary standard machine (GET 161-2019) were investigated, the budget of measurement uncertainty was calculated for reproducing hardness numbers on the Leeb scales.

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