Non-Uniform 3D Antenna Array Optimal Configuration via Extremum Seeking Control

Bibliographic Details
Main Author:	Abdesalam, Mosa Aboabdalla
Language:	English
Published:	University of Dayton / OhioLINK 2016
Subjects:	Electrical Engineering
Online Access:	http://rave.ohiolink.edu/etdc/view?acc_num=dayton1480723557369506

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spelling	ndltd-OhioLink-oai-etd.ohiolink.edu-dayton14807235573695062021-08-03T06:39:22Z Non-Uniform 3D Antenna Array Optimal Configuration via Extremum Seeking Control Abdesalam, Mosa Aboabdalla Electrical Engineering In this work, designing a system that controls a non-uniform antenna array will be attempted. This system will reconfigure the antenna array to find the position and orientation that produce the maximum objective (directivity). To create such a system, we will assume that we have N vehicles carrying antennas. These vehicles will be in 1<b>D</b>, 2<b>D</b>, and 3<b>D</b> spaces (e.g., quad-copters). Each vehicle with its antenna has five degrees of freedom. The five degrees are as follows, three degrees for the position of the vehicle (x, y, z), and two for the orientation of the antenna (θ, φ). The system should be able to test every possible value for these five parameters to dynamically choose the position and orientation that maximize the directivity. By measuring the performance function value online, a sequence, generated by three Extremum Seeking Control (ESC) algorithms that are compared in this work, guides the regulator that drives the state of system to a set point that optimizes the performance function. This approach develops a novel method to achieve reconfigurable antenna arrays, by defining an objective function to be optimized on-line using three different ESC methods: (a) Perturbation-based Extremum Seeking Control (PESC), (b) Numerical Optimization-based Extremum Seeking Control Using Direct Search (NOESC-DS), and (c) Numerical Optimization-based Extremum Seeking Control Using Particle Swarm Optimization (NOESC-PSO). Simulation results are provided for confirming the validity and the effectiveness of the proposed methods. We also studied the sensitivity of PESC and NOESC-PSO to changes in the initial conditions of the antenna array. We have found ESC to be a viable and effective method to achieve reconfigurable antenna arrays, capable of satisfying on the fly a given performance objective, even when the array elements can be moved in 3D space and the orientations of the antenna elements are allowed to vary. This is a challenging scenario, and our results indicate that it could be feasibly solved in practice using the proposed approach. 2016 English text University of Dayton / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=dayton1480723557369506 http://rave.ohiolink.edu/etdc/view?acc_num=dayton1480723557369506 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection	NDLTD
language	English
sources	NDLTD
topic	Electrical Engineering
spellingShingle	Electrical Engineering Abdesalam, Mosa Aboabdalla Non-Uniform 3D Antenna Array Optimal Configuration via Extremum Seeking Control
author	Abdesalam, Mosa Aboabdalla
author_facet	Abdesalam, Mosa Aboabdalla
author_sort	Abdesalam, Mosa Aboabdalla
title	Non-Uniform 3D Antenna Array Optimal Configuration via Extremum Seeking Control
title_short	Non-Uniform 3D Antenna Array Optimal Configuration via Extremum Seeking Control
title_full	Non-Uniform 3D Antenna Array Optimal Configuration via Extremum Seeking Control
title_fullStr	Non-Uniform 3D Antenna Array Optimal Configuration via Extremum Seeking Control
title_full_unstemmed	Non-Uniform 3D Antenna Array Optimal Configuration via Extremum Seeking Control
title_sort	non-uniform 3d antenna array optimal configuration via extremum seeking control
publisher	University of Dayton / OhioLINK
publishDate	2016
url	http://rave.ohiolink.edu/etdc/view?acc_num=dayton1480723557369506
work_keys_str_mv	AT abdesalammosaaboabdalla nonuniform3dantennaarrayoptimalconfigurationviaextremumseekingcontrol
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Non-Uniform 3D Antenna Array Optimal Configuration via Extremum Seeking Control

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