Схемотехнічні методи зменшення імпульсних завад у бортових електронних системах безпілотних літальних апаратів

T.G. Benko

doi:10.15330/itee.2024.1.02

Authors

T.G. Benko Vasyl Stefanyk Precarpathian National University https://orcid.org/0000-0002-6310-8743

DOI:

https://doi.org/10.15330/itee.2024.1.02

Keywords:

unmanned aerial vehicles, onboard electronics, impulsive interference, circuit-level methods, noise suppression, interference filtering, real-time systems

Abstract

In the onboard electronic systems of unmanned aerial vehicles, pulsed electromagnetic interference is one of the main factors limiting the reliability and accuracy of the operation of navigation, sensor and control subsystems. The sources of such interference are power electronic converters, electric motors, pulsed voltage regulators and switching processes in the on-board power supply network. Pulsed interference can lead to signal distortion, a decrease in the signal-to-noise ratio and a violation of the stability of the operation of electronic modules, especially in real-time conditions.

This paper considers circuit engineering methods for reducing pulsed interference in the onboard electronic systems of unmanned aerial vehicles. An approach to modeling the main sources of pulsed interference and their propagation in electronic circuits is proposed, taking into account the real parameters of the components. The effectiveness of passive and active interference suppression schemes, in particular RC and LC filters, active filters on operational amplifiers, as well as local resolution and power stabilization schemes, is analyzed.

The study was performed using circuit modeling, which allowed us to assess the influence of circuit parameters on the level of impulse interference, spectral characteristics of noise and stability of electronic systems. The results obtained demonstrate the possibility of significantly reducing the amplitude of impulse interference and improving the noise characteristics of UAV onboard electronics without increasing delays and computational complexity. The proposed methods can be used in the design of reliable and low-noise electronic systems of unmanned aerial vehicles.

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