| Authors |
Chernetsov Alexey Vladimirovich, candidate of economic sciences, associate professor, sub-department of applied and business informatics, K. G. Razumovsky Moscow State University of technologies and management (First Cossack University) (6 Volodarsky Street, Penza, Russia), chernav@yandex.ru
Chernetsov Vladimir Ivanovich, doctor of technical sciences, professor, sub-department of applied and business informatics,
K. G. Razumovsky Moscow State University of technologies and management (First Cossack University) (6 Volodarsky Street, Penza, Russia), chvi.fortuna@mail.ru
Chernetsov Mikhail Vladimirovich, candidate of technical sciences, associate professor, head of sub-department of technical quality management, Penza State Technology University (1a/11 Baydukova avenue/Gagarin street, Penza, Russia), kafedratuk@yandex.ru
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| Abstract |
Background. The object of the study is the means of measurement for parametric sensors represented by the equivalent circuit in the form of a two-pole electrical circuit, the real-ing method and the algorithm of invariant transformation of the sensor's informative
parameter regardless of the uninformative ones. It is important to develop the algorithm and measurement scheme based on the method of intermediate transformation of the sensor parameters into time intervals for which there are simple and high-precision measures of time, which are focused on the use of modern computational tools. The aim of this work is the development and study of the basic metrological characteristics of simple to implement of the transmitter parameters of the sensors with improved technical parameters; the dissemination of the conditions of the invariant transformation to the sensors of the described multi-element equivalent circuits.
Materials and methods. The methods of analytical analysis and mathematical modeling used in the work comply with the requirements of the theory of electrical circuits analysis, automatic control and mathematical modeling. The analysis of the influence of the main sources of errors and possible ways to reduce their impact on the measurement result.
Results. Structural diagram of the transmitter and measuring the sensor parameters in General, the mathematical models describing the algorithms and invariant transformations, and mathematical models of influence of major errors on the measuring result. It is shown that in the measuring instruments with intermediate pre-formation in time intervals, the zero trend error is partially compensated and it is possible to reduce the measurement cycle to one half-period of oscillations generated by the measuring transducer in comparison with the known measuring instruments based on the transducers of the sensor parameters in the frequency (period). Shows use-dependence developed method for measuring parameters of the sensors, we present the multielement electrical equivalent circuit.
Conclusions. The proposed solutions for the construction of sensors parameters meters allow to improve accuracy by reducing the number of analog operations to ensure the Inva-riance of the result and their performance by computing means, as well as by the conversion algorithm that reduces the impact of errors of the most typical for this class of meters and the possibility of using high-precision time measures for measuring the durations of intermediate unified signals. The analysis of the proposed example of the measuring instrument scheme confirms the obtained results and recommendations. .
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| Key words |
invariant transformation, parametric sensor, replacement circuit, measuring circuit, measuring transducer
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