Browsing by Author "Sergeyev, Igor"

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    Adaptive high speed measuring converter of average voltage values
    (National Aviation University, 2020-03-24) Sergeyev, Igor; Сергеєв, Ігор Юрійович
    The analysis of the measuring converter of average value voltage using the iteratively integrating method of conversion and its comparison with the analysis the generalized block diagram of the iteratively integrating measuring converter were performed. As a result of comparing the circuit of the measuring converter of average voltage values, which implements the iteratively integrating conversion method, with the generalized structural diagram of the iteratively integrating measuring transducer, the basic equations describing this device are obtained. As a result of the analysis of the generalized structural diagram of the iteratively integrating measuring transducer, an engineering solution is proposed that improves the parameters of the measuring converter of average voltage values by adapting it to the influence of changes in the input voltage frequency. This allows us to improve the dynamic characteristics of the converter of average voltage values when the input voltage frequency changes, which is directly related to the increase in the speed of the converter in the given frequency range of the input voltage or, which is equivalent in this case, to the extension of the frequency range of the input voltage, while maintaining the specified performance. It is proposed to adapt the considered converter of average voltage values to a change in the frequency of the input voltage periodically with a predetermined one, based on a priori information about the nature of the frequency change, periodically or occasionally, as the frequency changes.
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    Analysis of the potentiation digital-to-analog converter with accounting of imperfection its blocks
    (Osvita Ukrainy, Kyiv, 2016-03) Sergeyev, Igor; Сергеєв, Ігор Юрійович
    Potentiation digital-to-analog converter with iterative additive correction of errors is described. Analysis of errors of this converter with accounting of imperfection its blocks was produced. Basic expressions for the calculation of these errors are listed. The obtained equations conversion and carried out error analysis allow to create high-precision potentiation digital-to-analog converter.
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    Analysis of the potentiation digital-to-analog converter without accounting of imperfection its blocks
    (Osvita Ukrainy, 2015-12) Sergeyev, Igor; Сергеєв, Ігор Юрійович
    Potentiation digital-to-analog converter with iterative additive correction of errors is described. Analysis of errors of this converter without accounting of imperfection its blocks was produced. Basic expressions for the calculation of these errors are listed. Author developed the potentiation digital-to-analog converter with iterative additive correction of errors. Test results and operation experience confirmed the correctness of the results of theoretical research.
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    Generalized Structural Scheme of the Measurement Converter Using an Iteratively Integrating Conversion Method
    (Kyiv, “Osvita Ukrainy”, 2016-10) Sergeyev, Igor
    Generalized structural scheme of the measurement converter which uses iteratively integrating conversion method is described. Analysis of its conversion equation and errors was produced. Basic expressions for the calculation are listed. It is shown that the conversion equation for the steady state does not depend on the conversion coefficients of direct circuit blocks, which affect only a dynamic quality of converter that allows you to set low requirements to the said block at high precision converter as a whole.
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    On the Question of Analyzing of the Iteratively Integrating Measurement Converter
    (Kyiv, “Osvita Ukrainy”, 2017-10) Sergeyev, Igor
    Generalized structural scheme of the measurement converter which uses iteratively integrating conversion method is described. Analysis of its conversion equation and errors for the case where the input variable X = X (t) is not a constant, while the input values Z1, Z2 and output value Y are constant, was produced. Basic expressions for the calculation are listed.