Methodology for functional reconfiguration of an on-board equipment complex of an unmanned aircraft vehicle

Аuthors

Orekhovich R. A.

Air force academy named after professor N.E. Zhukovskii and Y.A. Gagarin, Voronezh, Russia

e-mail: orex0212@gmail.com

Abstract

The article deals with the issue of ensuring the fail-safe of the onboard equipment (OBE) complex of an unmanned aerial vehicle (UAV) with a long flight duration. This trend of research is a relevant aspect in the unmanned systems development. The UAVs find wide application in modern armed conflicts and various sectors of the economy. The number of tasks assigned to the unmanned systems increases annually.

Regardless of the scope of application and class of the UAV, the main property that the UAV must possess is its operational reliability. It is being ensured in various ways, such as redundancy, integration and reconfiguration, but the required values of reliability indicators are not being achieved. Creation of the redundant reconfigurable OBE is the only way to achieve maximum possible reliability of these complexes under conditions of both limited components in use reliability and the impact of a wide range of external factors. Modern approaches to the redundancy management are aimed at ensuring the functions performing of the failed components by the other OBE intact components.

The article describes an experimental technique for functional reconfiguration, which allows optimizing the OBE operation, ensuring its maximum efficiency and functionality. It is based on an adaptive method of the OBE functional reconfiguration, which consists in introducing of an adaptation block that generates functional efficiency indicators (FPE) of components, based on the application of the information about operating modes, operator commands and other external information, as well as information about the technical condition of functional modules based on the fuzzy logic approach.

To test the proposed methodology, a functional the OBE mathematical model was developed, which was realized in the MATLAB interactive environment for programming and numerical calculations with special tools for analysis, design and fuzzy logic systems modeling - Fuzzy Logic Toolbox. Operation of the said technique is considered on the example of the one of the OBE computer failure, of which results in the redistribution of tasks between the computers, which increases the probability of the combat mission completion.

The methodology and mathematical model of the adaptive functional reconfiguration of the UAV OBE proposed in the article allows defining the PFE configurations of the OBE components based on a fuzzy logic approach, which in its turn allows completing a combat mission without losing the computational load with the available resources of the UAV OBE components.

Keywords:

control, reliability, unmanned aerial vehicle, functional reconfiguration

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