ROBUST CONTROLLER FOR SUPERSONIC UNMANNED AERIAL VEHICLE

Vitalii Burnashev,Aleksandr Zbrutsky

doi:10.3846/aviation.2019.10300

Abstract

The article is devoted to the synthesis of robust controllers of supersonic unmanned aerial vehicle motion parameters. During the flight, the velocity and altitude of the aircraft varies rapidly within wide limits. Therefore, the required quality of control on each trajectory is provided by a set of dynamic controllers with constant coefficients. The article substantiates the number of such controllers, researches the range of their efficiency. The obtained restrictions on the amplitude-frequency characteristics and weight functions are given. Transients are shown

Highlights

The flight parameters of jet unmanned aerial vehicles (UAVs) in a short time can vary within very wide limits
The use of adaptive controllers implies a large amount of computation, which reduces the reliability of the control system, and imposes strict requirements on the characteristics of the onboard computer (Zavalnaya & Burnashev, 2015)
It was determined that for a fixed flight trajectory of the investigated supersonic UAV, it is necessary to synthesize a robust controller in 4–8 points

Summary

Introduction

The flight parameters of jet unmanned aerial vehicles (UAVs) in a short time can vary within very wide limits Each channel of translational motion automatic control of the considered UAV consists of the internal loop of the angular motion oscillations damping and the external loop of the linear acceleration control (Figure 1). The same parameters of the control object transfer functions Wa , Wω may take values that differ many times depending on the choice of the trajectory Since the first few seconds of flight, the UAV has back centering

Synthesis of the controller at a given point of the flight trajectory

Synthesis of controllers in the entire range of altitudes and flight speeds

Findings

Conclusions