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Dr. mohamed salem :: Publications:

A Robust Nonlinear Controller for Autonomous Helicopter Landing
Authors: 1. M. Hasan; A. Abouelsoud; H. Abdelkader
Year: 2007
Keywords: Helicopter model- Nonlinear systems- Rotors dynamics- Saturated controls
Journal: Scientific Bulletin, Faculty of Engineering, Ain Shams University
Volume: 42
Issue: 3
Pages: Not Available
Publisher: Not Available
Local/International: International
Paper Link: Not Available
Full paper mohamed salem_A ROBUST NONLINEAR CONTROLLER FOR.pdf
Supplementary materials Not Available

We consider the problem of controlling the vertical motion of a nonlinear model of a helicopter during landing, while stabilizing the lateral and longitudinal position and maintaining a constant attitude. The dynamics of the helicopter main and tail rotors are often neglected to simplify the control design, but this reduction has the disadvantage of an unreal choice of the control inputs. We have solved this contradiction by choosing the main controller required for performing the secure autonomous landing by neglecting the complex rotors dynamics, and then we have included these important dynamics in a closed loop model having real controls determined from an auxiliary controller. Simulation results show the effectiveness of the method to cope with uncertainties on the plant and actuator model.

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