Keywords

Target encirclement, Lyapunov theory, Autonomous vehicles, cooperative control

Abstract

This paper presents theoretically justified controllers that use relative range and bearing measurements to steer a team of autonomous vehicles, operating without inertial position information, to circular trajectories around a constant-acceleration, constant-velocity, or stationary target. An extended Kalman filter is used to improve the noisy relative measurements and estimate the velocity of the moving target. These estimated values are used in the control laws to encircle constant-velocity moving targets. Lyapunov techniques are utilized to show that the vehicle will converge to the desired circular formations. Additionally, cooperating vehicles are shown to converge to a circular formation with equal temporal spacing using each vehicle's estimate of the target's velocity to define a common reference frame. Numerical simulations validate the efficacy of these control laws.

Document Type

Peer-Reviewed Article

Publication Date

2021-08-21

Language

English

College

Ira A. Fulton College of Engineering and Technology

Department

Electrical and Computer Engineering

University Standing at Time of Publication

Assistant Professor

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