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Passive dynamics and maneuverability...

University of California, Santa Barbara., Electrical & Computer Engineering.

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Passive dynamics and maneuverability in flapping-wing robots.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Passive dynamics and maneuverability in flapping-wing robots./
Author:	Mahjoubi, Hosein.
Description:	132 p.
Notes:	Source: Dissertation Abstracts International, Volume: 75-03(E), Section: B.
Contained By:	Dissertation Abstracts International75-03B(E).
Subject:	Engineering, Robotics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3602146
ISBN:	9781303539572

Passive dynamics and maneuverability in flapping-wing robots.
Mahjoubi, Hosein.

Passive dynamics and maneuverability in flapping-wing robots. - 132 p.

Source: Dissertation Abstracts International, Volume: 75-03(E), Section: B.

Thesis (Ph.D.)--University of California, Santa Barbara, 2013.

Research on flapping-wing micro-aerial vehicles (MAV) has grown steadily in the past decade, aiming to address unique challenges in morphological construction, power requirements, force production, and control strategy. In particular, vehicles inspired by hummingbird or insect flight have been remarkably successful in generation of adequate lift force for levitation and vertical acceleration; however, finding effective methods for motion control still remains an open problem. Here, to address this problem we introduce and analyze a bio-inspired approach that guarantees stable and agile flight maneuvers. Analysis of flight muscles in insects/hummingbirds suggests that mechanical impedance of the wing joint could be the key to flight control mechanisms employed by these creatures. Through developing a quasi-steady-state aerodynamic model for insect flight, we were able to show that presence of a similar structure - e.g. a torsional spring - at the base of each wing can result in its passive rotation during a stroke cycle. It has been observed that manipulating the stiffness of this structure affects lift production via limiting the extent of wing rotation. Furthermore, changing the equilibrium point of the passive element introduces asymmetries in the drag profile which can generate considerable amounts of mean thrust while avoiding significant disturbances on lift production. Flight simulations using a control strategy based on these observations - a.k.a. the Mechanical Impedance Manipulation (MIM) technique - demonstrate a high degree of maneuverability and agile flight capabilities. Correlation analysis suggests that by limiting the changes in mechanical impedance properties to frequencies well below that of stroke, the coupling between lift and thrust production is reduced even further, enabling us to design and employ simple controllers without degrading flight performance. Unlike conventional control approaches that often rely on manipulation of stroke profile, our bio-inspired method is able to operate with constant stroke magnitudes and flapping frequencies. This feature combined with low bandwidth requirements for mechanical impedance manipulation result in very low power requirements, a feature that is of great importance in development of practical flapping-wing MAVs.

ISBN: 9781303539572Subjects--Topical Terms:

1018454
Engineering, Robotics.

Passive dynamics and maneuverability in flapping-wing robots.
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100 1 $a Mahjoubi, Hosein. $3 2096304
245 1 0 $a Passive dynamics and maneuverability in flapping-wing robots.
300 $a 132 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-03(E), Section: B.
500 $a Adviser: Katie Byl.
502 $a Thesis (Ph.D.)--University of California, Santa Barbara, 2013.
520 $a Research on flapping-wing micro-aerial vehicles (MAV) has grown steadily in the past decade, aiming to address unique challenges in morphological construction, power requirements, force production, and control strategy. In particular, vehicles inspired by hummingbird or insect flight have been remarkably successful in generation of adequate lift force for levitation and vertical acceleration; however, finding effective methods for motion control still remains an open problem. Here, to address this problem we introduce and analyze a bio-inspired approach that guarantees stable and agile flight maneuvers. Analysis of flight muscles in insects/hummingbirds suggests that mechanical impedance of the wing joint could be the key to flight control mechanisms employed by these creatures. Through developing a quasi-steady-state aerodynamic model for insect flight, we were able to show that presence of a similar structure - e.g. a torsional spring - at the base of each wing can result in its passive rotation during a stroke cycle. It has been observed that manipulating the stiffness of this structure affects lift production via limiting the extent of wing rotation. Furthermore, changing the equilibrium point of the passive element introduces asymmetries in the drag profile which can generate considerable amounts of mean thrust while avoiding significant disturbances on lift production. Flight simulations using a control strategy based on these observations - a.k.a. the Mechanical Impedance Manipulation (MIM) technique - demonstrate a high degree of maneuverability and agile flight capabilities. Correlation analysis suggests that by limiting the changes in mechanical impedance properties to frequencies well below that of stroke, the coupling between lift and thrust production is reduced even further, enabling us to design and employ simple controllers without degrading flight performance. Unlike conventional control approaches that often rely on manipulation of stroke profile, our bio-inspired method is able to operate with constant stroke magnitudes and flapping frequencies. This feature combined with low bandwidth requirements for mechanical impedance manipulation result in very low power requirements, a feature that is of great importance in development of practical flapping-wing MAVs.
590 $a School code: 0035.
650 4 $a Engineering, Robotics. $3 1018454
650 4 $a Biophysics, Biomechanics. $3 1035342
650 4 $a Engineering, Electronics and Electrical. $3 626636
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710 2 $a University of California, Santa Barbara. $b Electrical & Computer Engineering. $3 1020566
773 0 $t Dissertation Abstracts International $g 75-03B(E).
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791 $a Ph.D.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3602146