Open Access
Nichtlineare adaptive Regelung eines unbemannten Fluggerätes
TLDR
In this paper, a nichtlinearer dynamischer Inversion beruhendes adaptives Regelungskonzept is proposed, e.g., for the autonome Durchfuhrung of a geplanten Flugmission, which erlaubt die volle Ausnutzung der Flugleistungen der Konfiguration.Abstract:
Eine zentrale Anforderung an unbemannte Fluggerate ist die autonome Durchfuhrung der geplanten Flugmission. Zur Erreichung dieses Zieles muss das Regelungssystem des Flugzeuges ein hohes Mas an Robustheit gegenuber Modell- und Parameterunsicherheiten sowie die Anpassungsfahigkeit aufweisen, um Stor- und Ausfallsituationen meistern zu konnen. Ferner muss die Einhaltung von Betriebsgrenzen gewahrleistet sein. Es wird ein auf nichtlinearer dynamischer Inversion beruhendes adaptives Regelungskonzept vorgestellt, das die genannten Anspruche erfullt und das den Flug auf komplexen, dreidimensionalen Bahnen mit hoher Bandbreite und groser Fuhrungsgenauigkeit ermoglicht. Das System erlaubt die volle Ausnutzung der Flugleistungen der Konfiguration und berucksichtigt insbesondere auch Sattigungen in Ruderausschlagen und -stellraten. Der Nachweis der Funktionsfahigkeit erfolgt anhand nichtlinearer Simulationen unter Verwendung eines komplexen Simulationsmodells.read more
Citations
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Proceedings ArticleDOI
Dynamic Inversion based Full Envelope Flight Control for an eVTOL Vehicle using a Unified Framework
Thomas Lombaerts,John Kaneshige,Stefan Schuet,Bimal L. Aponso,Kimberlee H. Shish,Gordon H. Hardy +5 more
TL;DR: By using Incremental Nonlinear Dynamic Inversion, it was found that the overall controller becomes significantly less dependent on accurate aircraft model properties, especially with respect to the aerodynamic derivatives, of which one can expect limited knowledge for this kind of UAM vehicles.
Proceedings ArticleDOI
Pseudo Control Hedging and its Application for Safe Flight Envelope Protection
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References
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Book
Neural Networks: A Comprehensive Foundation
TL;DR: Thorough, well-organized, and completely up to date, this book examines all the important aspects of this emerging technology, including the learning process, back-propagation learning, radial-basis function networks, self-organizing systems, modular networks, temporal processing and neurodynamics, and VLSI implementation of neural networks.
Journal ArticleDOI
Multilayer feedforward networks are universal approximators
TL;DR: It is rigorously established that standard multilayer feedforward networks with as few as one hidden layer using arbitrary squashing functions are capable of approximating any Borel measurable function from one finite dimensional space to another to any desired degree of accuracy, provided sufficiently many hidden units are available.
Book
Applied Nonlinear Control
TL;DR: Covers in a progressive fashion a number of analysis tools and design techniques directly applicable to nonlinear control problems in high performance systems (in aerospace, robotics and automotive areas).
Journal ArticleDOI
Multilayer feedforward networks are universal approximators
HornikK.,StinchcombeM.,WhiteH. +2 more
Book
Nonlinear Control Systems
Alberto Isidori,M. Thoma,Eduardo D. Sontag,B. W. Dickinson,A. Fettweis,J. L. Massey,J. W. Modestino +6 more
TL;DR: In this paper, a systematic feedback design theory for solving the problems of asymptotic tracking and disturbance rejection for linear distributed parameter systems is presented, which is intended to support the development of flight controllers for increasing the high angle of attack or high agility capabilities of existing and future generations of aircraft.