Title :
Integrated adaptive feed-forward control of atmospheric turbulence excited rigid body motions and structural vibrations on a large transport aircraft
Author :
Wildschek, Andreas ; Maier, Rudolf
Author_Institution :
EADS Innovation Works Germany, Munich
Abstract :
An adaptive feed-forward controller for simultaneous compensation of atmospheric turbulence excited rigid body motions and structural vibrations is designed. Proposed feed-forward control is intended as an add-on to current gust load alleviation systems. The objectives thereby are increased passenger comfort and handling qualities, as well as a more efficient reduction of dynamic wing loads. A steepest descent algorithm is applied in order to increase the robustness of the performance of the feed-forward control system against modeling errors and variations of wing tanks configuration and Mach number. The proposed algorithm is tested in numeric simulations with the state space model of a conventional four-engine transport aircraft. The simulation results illustrate the proposed control system´s high potential for simultaneous compensation of atmospheric turbulence excited pitch and wing bending accelerations.
Keywords :
adaptive control; aircraft control; atmospheric turbulence; control system synthesis; feedforward; vibration control; Mach number; atmospheric turbulence; excited rigid body motions; gust load alleviation systems; integrated adaptive feed-forward control; large transport aircraft; state space model; steepest descent algorithm; structural vibrations; wing tanks configuration; Adaptive control; Aerospace control; Aircraft; Atmospheric modeling; Control system synthesis; Control systems; Feedforward systems; Motion control; Programmable control; Vibration control; Multi-objective control; adaptive feed-forward control; atmospheric disturbance compensation; control of flexible aircraft; gust load alleviation;
Conference_Titel :
American Control Conference, 2008
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-2078-0
Electronic_ISBN :
0743-1619
DOI :
10.1109/ACC.2008.4586998