Metrological performance of integrated waveguide-based SPR refractometer: eigenmode expansion perspective

A fuzzy evaluation method of road vehicle automatic weighing instrument in dynamic force metrological performance

International Journal of Applied Electromagnetics and Mechanics ◽

10.3233/jae-209455 ◽

2020 ◽

Vol 64 (1-4) ◽

pp. 1365-1372

Author(s):

Xiaohui Mao ◽

Liping Fei ◽

Xianping Shang ◽

Jie Chen ◽

Zhihao Zhao

Keyword(s):

Evaluation Method ◽

Comprehensive Evaluation ◽

Evaluation Model ◽

Dynamic Performance ◽

Dynamic Force ◽

Fuzzy Evaluation ◽

Road Vehicle ◽

Evaluation Standard ◽

The Road ◽

Metrological Performance

The measurement performance of road vehicle automatic weighing instrument installed on highways is directly related to the safety of roads and bridges. The fuzzy number indicates that the uncertain quantization problem has obvious advantages. By analyzing the factors affecting the metrological performance of the road vehicle automatic weighing instrument, combined with the fuzzy mathematics theory, the weight evaluation model of the dynamic performance evaluation of the road vehicle automatic weighing instrument is proposed. The factors of measurement performance are summarized and calculated, and the comprehensive evaluation standard of the metering performance of the weighing equipment is obtained, so as to realize the quantifiable analysis and evaluation of the metering performance of the dynamic road vehicle automatic weighing instrument in use, and provide data reference for adopting a more scientific measurement supervision method.

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The method of determining the metrological performance of unit reference standards of reflection coefficient in waveguides at millimeter waves

Izmeritel`naya Tekhnika ◽

10.32446/0368-1025it.2020-1-59-63 ◽

2020 ◽

pp. 59-63

Author(s):

A.S. Bondarenko ◽

A.S. Borovkov ◽

I.M. Malay ◽

V.A. Semyonov

Keyword(s):

Reflection Coefficient ◽

Millimeter Waves ◽

Primary Standard ◽

Reference Standards ◽

Measurement Scale ◽

Current State ◽

Coefficient Measurement ◽

Mathematical Equations ◽

Electrodynamic Modeling ◽

Metrological Performance

The analysis of the current state of the reflection coefficient measurements in waveguides at millimeter waves is carried out. An approach for solving the problem of reproducing the reflection coefficient measurement scale is proposed. Mathematical equations, which are the basis of the reflection coefficient measurement equation are obtained. The method of determining the metrological performance of reflection coefficient unit’s reference standards is developed. The results of electrodynamic modeling and analytical calculations by the developed method are compared. It is shown that this method can be used for reproducing the reflection coefficient unit in the development of the State primary standard.

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