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Shock and Vibration
Volume 2016 (2016), Article ID 2150493, 20 pages
http://dx.doi.org/10.1155/2016/2150493
Research Article

Observer Based Optimal Vibration Control of a Full Aircraft System Having Active Landing Gears and Biodynamic Pilot Model

1Department of Mechanical Engineering, Yildiz Technical University, Istanbul, Turkey
2Department of Mechatronics Engineering, Yildiz Technical University, Istanbul, Turkey

Received 28 March 2016; Revised 9 August 2016; Accepted 7 September 2016

Academic Editor: Mickaël Lallart

Copyright © 2016 Hakan Yazici and Mert Sever. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper deals with the design of an observed based optimal state feedback controller having pole location constraints for an active vibration mitigation problem of an aircraft system. An eleven-degree-of-freedom detailed full aircraft mathematical model having active landing gears and a seated pilot body is developed to control and analyze aircraft vibrations caused by runway excitation, when the aircraft is taxiing. Ground induced vibration can contribute to the reduction of pilot’s capability to control the aircraft and cause the safety problem before take-off and after landing. Since the state variables of the pilot body are not available for measurement in practice, an observed based optimal controller is designed via Linear Matrix Inequalities (LMIs) approach. In addition, classical LQR controller is designed to investigate effectiveness of the proposed controller. The system is then simulated against the bump and random runway excitation. The simulation results demonstrate that the proposed controller provides significant improvements in reducing vibration amplitudes of aircraft fuselage and pilot’s head and maintains the safety requirements in terms of suspension stroke and tire deflection.