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Wind Sensing and Rejection for Agile Fixed-Wing Unmanned Aerial Vehicles.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Wind Sensing and Rejection for Agile Fixed-Wing Unmanned Aerial Vehicles./
Author:	Empey, Jackson.
Description:	1 online resource (129 pages)
Notes:	Source: Masters Abstracts International, Volume: 84-10.
Contained By:	Masters Abstracts International84-10.
Subject:	Unmanned aerial vehicles. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30347364click for full text (PQDT)
ISBN:	9798377677680

Wind Sensing and Rejection for Agile Fixed-Wing Unmanned Aerial Vehicles.
Empey, Jackson.

Wind Sensing and Rejection for Agile Fixed-Wing Unmanned Aerial Vehicles. - 1 online resource (129 pages)

Source: Masters Abstracts International, Volume: 84-10.

Thesis (M.S.)--McGill University (Canada), 2022.

Includes bibliographical references

Agile fixed-wing unmanned aerial vehicles (UAVs) are an emerging class of autonomous aircraft that combine the efficient distance flight of conventional fixed-wings with the maneuverability, and ability to hover, of multi-rotor platforms. These characteristics make agile fixed-wings compelling candidates for a wide variety of missions from search and rescue to surveillance. The remarkable maneuverability of these platforms is largely due to their low weight, and powerful thrusters, which drive reliable and fast slipstream airflow over the control surfaces, keeping them effective during low-speed flight.While their low weight is critical to the agility of this class of UAV, it also makes them highly susceptible to wind and can present challenges for precision flight outdoors.The objective of this thesis is to reject wind disturbances on agile fixed-wing platforms while minimizing any reductions to the performance of the agile fixed-wing.To achieve this objective, a modular, feedforward, wind rejection controller, relying on a wind estimate, was developed to improve the performance of existing agile fixed-wing controllers in outdoor environments. To provide a wind estimate to this controller while maintaining the platform's agility, only one additional sensor, an airspeed sensor placed near the platform's body is required. Since this sensor location is impacted by propeller slipstream, a model-based approach to removing slipstream flow from airspeed measurements is used as part of a larger wind estimation architecture. Simulations and experimental flights were conducted to validate both the feedforward controller and model-based slipstream removal.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798377677680Subjects--Topical Terms:

3560267
Unmanned aerial vehicles.
Index Terms--Genre/Form:

542853
Electronic books.

Wind Sensing and Rejection for Agile Fixed-Wing Unmanned Aerial Vehicles.
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245 1 0 $a Wind Sensing and Rejection for Agile Fixed-Wing Unmanned Aerial Vehicles.
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500 $a Source: Masters Abstracts International, Volume: 84-10.
500 $a Advisor: Nahon, Meyer.
502 $a Thesis (M.S.)--McGill University (Canada), 2022.
504 $a Includes bibliographical references
520 $a Agile fixed-wing unmanned aerial vehicles (UAVs) are an emerging class of autonomous aircraft that combine the efficient distance flight of conventional fixed-wings with the maneuverability, and ability to hover, of multi-rotor platforms. These characteristics make agile fixed-wings compelling candidates for a wide variety of missions from search and rescue to surveillance. The remarkable maneuverability of these platforms is largely due to their low weight, and powerful thrusters, which drive reliable and fast slipstream airflow over the control surfaces, keeping them effective during low-speed flight.While their low weight is critical to the agility of this class of UAV, it also makes them highly susceptible to wind and can present challenges for precision flight outdoors.The objective of this thesis is to reject wind disturbances on agile fixed-wing platforms while minimizing any reductions to the performance of the agile fixed-wing.To achieve this objective, a modular, feedforward, wind rejection controller, relying on a wind estimate, was developed to improve the performance of existing agile fixed-wing controllers in outdoor environments. To provide a wind estimate to this controller while maintaining the platform's agility, only one additional sensor, an airspeed sensor placed near the platform's body is required. Since this sensor location is impacted by propeller slipstream, a model-based approach to removing slipstream flow from airspeed measurements is used as part of a larger wind estimation architecture. Simulations and experimental flights were conducted to validate both the feedforward controller and model-based slipstream removal.
520 $a Les vehicules a ´ eriens sans pilote (UAV) ´ a voilure fixe agiles sont une classe ` emergente ´ d'avions autonomes qui combinent le vol d'avancement efficace des voilures fixes conventionnelles avec la maniabilite et la capacit ´ e de vol stationnaire des plates-formes mul- ´ tirotor. Ces caracteristiques font des voilures fixes agiles des candidats convaincants pour ´ une grande variet´ e de missions, tels le sauvetage et la surveillance. La maniabilit ´ e re- ´ marquable de ces plates-formes est en grande partie due a leur faible poids et ` a leurs ` propulseurs puissants, qui entraˆinent un flux d'air en sillage fiable et rapide sur les surfaces de commande, les gardant efficaces pendant le vol a basse vitesse. Malgr ` e que leur ´ faible poids soit essentiel a l'agilit ` e de cette classe d'UAV, cela les rend ´ egalement tr ´ es` sensibles au vent et peut presenter un d ´ efi pour un vol de pr ´ ecision ´ a l'ext ` erieur.´ L'objectif de cette these est de rejeter les perturbations du vent sur ces plates-formes ` tout en minimisant la reduction en performance de vol. Pour atteindre cet objectif, un ´ precompensateur modulaire de rejet du vent, reposant sur une estimation du vent, a ´ et´ e´ developp ´ e pour am ´ eliorer la performances des correcteurs agiles pour les avions ´ a voilure ` fixe en environnement exterieur. Pour fournir une estimation du vent ´ a ce contr ` oleur tout ˆ en conservant l'agilite de la plate-forme, un seul capteur suppl ´ ementaire, un an ´ emom ´ etre ` place pr ´ es du corps de la plate-forme, est n ` ecessaire. ´ Etant donn ´ e que le placement de ce ´ capteur est influence par le sillage de l'h ´ elice, une approche bas ´ ee sur un mod ´ ele du flux ` de sillage est utilisee dans le cadre d'une architecture d'estimation du vent pour sup- ´ primer les effets sur les mesures de vitesse anemom ´ etrique. Des simulations et des vols ´ experimentaux ont ´ et´ e effectu ´ es pour valider ´ a la fois le contr ` oleur pr ˆ edictif et l'estimation ´ du vent basee sur le mod ´ ele de sillage de l'h ` elice.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
650 4 $a Unmanned aerial vehicles. $3 3560267
650 4 $a Racetracks. $3 3695525
650 4 $a Flow velocity. $3 3564851
650 4 $a Feedback. $3 677181
650 4 $a Calibration. $3 2068745
650 4 $a Sensors. $3 3549539
650 4 $a Aerospace engineering. $3 1002622
650 4 $a Engineering. $3 586835
650 4 $a Fluid mechanics. $3 528155
650 4 $a Mechanics. $3 525881
650 4 $a Robotics. $3 519753
650 4 $a Transportation. $3 555912
655 7 $a Electronic books. $2 lcsh $3 542853
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690 $a 0537
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690 $a 0346
690 $a 0771
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710 2 $a ProQuest Information and Learning Co. $3 783688
710 2 $a McGill University (Canada). $3 1018122
773 0 $t Masters Abstracts International $g 84-10.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30347364 $z click for full text (PQDT)