<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kottenstette, Nicholas</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Constructive Non-Linear Control Design With Applications to Quad-Rotor and Fixed-Wing Aircraft</style></title><secondary-title><style face="normal" font="default" size="100%">Technical Report</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2010</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">https://archive.isis.vanderbilt.edu/sites/default/files/fixed_wing_Nov_08_2010_03_45_PM.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Institute for Software Integrated Systems, Vanderbilt University</style></publisher><pub-location><style face="normal" font="default" size="100%">Nashville, TN</style></pub-location><abstract><style face="normal" font="default" size="100%">This paper recalls a non-linear constructive
method, based on controlling cascades of conic-systems as it
applies to the control of quad-rotor aircraft. Such a method
relied on the physical model of the system to construct high performance,
modest sampling period (Ts = .02 s) and low complexity
digital-controllers. The control of fixed-wing aircraft,
however is not nearly a straight forward task in extending
results related to the control of quad-rotor aircraft. Although
fixed-wing aircraft and quad-rotor aircraft ultimately share
the same kinematic equations of motion, fixed-wing aircraft
are intimately dependent on their relationship to the wind
reference frame. This additional coupling leads to additional
equations of motion including those related to the angle-of attack,
slide-slip-angle, and bank angle. As a result a more
advanced non-linear control method known as back-stepping is
required to compensate for non-passive non-linearity's. These
back-stepping controllers are recursive in nature and can even
address actuator magnitude and rate limitations and even
include adaptability to unknown lift and drag coefficients. This
paper presents a non-adaptive back-stepping controller which
is aimed to verify a fixed-wing aircraft model not subject to
actuator limitations (in order to simplify discussion). The back-stepping
controller proposed is less complex then previously
proposed controllers, exhibits similar response characteristics
while being robust to both steady head wind shear and discrete-time
wind gust disturbances.</style></abstract></record></records></xml>