Skip to main content

Determining Dynamic Characteristics of Measuring Instruments with a Spectral Method Insensitive to Harmonic Interference

Abstract

Determination of the dynamic characteristics of measuring instruments based on experimental transient characteristics is associated with the problem of consideration of their inherent interferences having various origins. The presence of broadband harmonic interference, especially of a high level, can reduce the accuracy of determining the desired dynamic characteristics of measuring instruments. The purpose of this work was to demonstrate the capabilities of the spectral method for finding individual dynamic characteristics of measuring instruments using transient characteristics containing high-level harmonic interference. It is shown that the imaginary part of the complex spectral density of signal formed according to the proposed rules from the transition characteristic is insensitive to harmonic interference of any level in any frequency range. It is proposed to use this imaginary part to determine the coefficients of the desired dynamic characteristics, for example, using regression analysis. The work is illustrated by examples of spectral characteristics of signals with and without harmonic interference.

This is a preview of subscription content, access via your institution.

Fig. 1
Fig. 2
Fig. 3
Fig. 4

REFERENCES

  1. 1

    Safina, I., Sabitov, A., and Garkushenko, V., Identification of Nominal Dynamic Characteristics Gas Temperature Sensors of Aircraft, Aviakosm. Priborostr., 2017, no. 3, pp. 3–11.

  2. 2

    Sabitov, A. and Safina, I., Method for Determination of Characteristic Curve of the Thermal Inertia of Aircraft Gas Temperature Sensors, Prib. Met. Izmer., 2017, vol. 8, no. 4, pp. 357–364; DOI: 10.21122/2220-9506-2017-8-4-357-364.

    Article  Google Scholar 

  3. 3

    Sabitov, A., Tyurina, M., and Safina, I., Identification of Dynamic Characteristics of Temperature Sensors, J. Eng. Therm., 2020, vol. 29, no. 4, pp. 618–631; DOI: 10.1134/S1810232820040104.

    Article  Google Scholar 

  4. 4

    Sabitov, A. and Safina, I., Implementation of the Spectral Method for Determining of Measuring Instrument Dynamic Characteristics, Prib. Met. Izmer., 2020, vol. 11, no. 2, pp. 155–162; DOI: 10.21122/2220-9506-2020-11-2-155-162.

    Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding authors

Correspondence to A. F. Sabitov or I. A. Safina.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Sabitov, A.F., Safina, I.A. Determining Dynamic Characteristics of Measuring Instruments with a Spectral Method Insensitive to Harmonic Interference. J. Engin. Thermophys. 30, 508–514 (2021). https://doi.org/10.1134/S1810232821030139

Download citation