Review of designs and flight control techniques of hybrid and convertible VTOL UAVs

GJJ Ducard, M Allenspach - Aerospace Science and Technology, 2021 - Elsevier
This paper provides a broad perspective and analysis of the work done in control of hybrid
and convertible unmanned aerial vehicles (UAVs) for the main existing designs. These flying …

Command filtered adaptive backstepping

W Dong, JA Farrell, MM Polycarpou… - … on Control Systems …, 2011 - ieeexplore.ieee.org
Implementation of adaptive backstepping controllers requires analytic calculation of the
partial derivatives of certain stabilizing functions. It is well documented that, as the order of a …

[图书][B] 1 Adaptive Control Theory: Guaranteed Robustness with Fast Adaptation

N Hovakimyan, C Cao - 2010 - SIAM
This book gives a comprehensive overview of the recently developed ℒ1 adaptive control
theory with detailed proofs of the fundamental results. The key feature of ℒ1 adaptive control …

Design and analysis of a novel L1 adaptive controller, Part II: Guaranteed transient performance

C Cao, N Hovakimyan - 2006 American Control Conference, 2006 - ieeexplore.ieee.org
In this paper, we present a novel adaptive control architecture that ensures that the input and
output of an uncertain linear system track the input and output of a desired linear system …

L1 adaptive control design for NASA AirSTAR flight test vehicle

I Gregory, C Cao, E Xargay, N Hovakimyan… - … , navigation, and control …, 2009 - arc.aiaa.org
In this paper we present an extension of the L1 adaptive control architecture to nonlinear
systems in the presence of significant uncertain cross-coupling. To evaluate the L1 adaptive …

Certification considerations for adaptive systems

S Bhattacharyya, D Cofer, D Musliner… - 2015 International …, 2015 - ieeexplore.ieee.org
Advanced capabilities planned for the next generation of unmanned aircraft will be based on
complex new algorithms and non-traditional software elements. These aircraft will …

[HTML][HTML] Transition control of a tail-sitter unmanned aerial vehicle with L1 neural network adaptive control

J Zhong, W Chen, H Zhang - Chinese Journal of Aeronautics, 2023 - Elsevier
The main task of this work is to design a control system for a small tail-sitter Unmanned
Aerial Vehicle (UAV) during the transition process. Although reasonable control …

L1 adaptive pitch angle controller of wind energy conversion systems

Q Yang, X Jiao, Q Luo, Q Chen, Y Sun - ISA transactions, 2020 - Elsevier
In conditions of above rated wind speed, the power output of a wind turbine should be
maintained at rated power to prevent overheating of generators and power electronics …

Guaranteed transient performance with L1 adaptive controller for systems with unknown time-varying parameters and bounded disturbances: Part I

C Cao, N Hovakimyan - 2007 American Control Conference, 2007 - ieeexplore.ieee.org
This paper presents a novel adaptive control methodology for uncertain systems with time-
varying unknown parameters and time-varying bounded disturbances. The adaptive …

Development and application of controller for transition flight of tail-sitter UAV

Y Jung, DH Shim - Journal of Intelligent & Robotic Systems, 2012 - Springer
There is renewed interest in tail-sitter airplanes on account of their vertical takeoff and
landing capability as well as their efficient horizontal flight capabilities. The transition from a …