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Optimum design of a PID controller for the adaptive torsion wing

Optimum design of a PID controller for the adaptive torsion wing
Optimum design of a PID controller for the adaptive torsion wing
This paper presents the optimum design of a PID controller for the Adaptive Torsion Wing (ATW) using the genetic algorithm (GA) optimiser. The ATW is a thin-wall, two-spar wingbox whose torsional stiffness can be adjusted by translating the spar webs in the chordwise direction inward and towards each. The reduction in torsional stiffness allows external aerodynamic loads to deform the wing and maintain its shape. The ATW is integrated within the wing of a representative UAV to replace conventional ailerons and provide roll control. The ATW is modelled as a two-dimensional equivalent aerofoil using bending and torsion shape functions to express the equations of motion in terms of the twist angle and plunge displacement at the wingtip. The full equations of motion for the ATW equivalent aerofoil were derived using Lagrangian mechanics. The aerodynamic lift and moment acting on the aerofoil were modelled using Theodorsen’s unsteady aerodynamic theory. The equations of motion are then linearised around an equilibrium position and the GA is employed to design a PID controller for the linearised system to minimise the actuation power require. Finally, the sizing and selection of a suitable actuator is performed
0001-9240
871-889
Bourchak, M.
a78efa81-d3c5-47e1-bcd3-0200333da605
Ajaj, R.
ff8ce68d-2ba5-449e-83da-f2be54e6d409
Saavedra Flores, E.I.
51c7dfba-2289-4e4d-bfb8-17b10bb56458
Khalid, M.
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Juhany, K.
3d10b487-4034-4d7a-8c50-1b194e692bcc
Bourchak, M.
a78efa81-d3c5-47e1-bcd3-0200333da605
Ajaj, R.
ff8ce68d-2ba5-449e-83da-f2be54e6d409
Saavedra Flores, E.I.
51c7dfba-2289-4e4d-bfb8-17b10bb56458
Khalid, M.
a7300864-79d9-4223-9f6d-f03bd23d7f78
Juhany, K.
3d10b487-4034-4d7a-8c50-1b194e692bcc

Bourchak, M., Ajaj, R., Saavedra Flores, E.I., Khalid, M. and Juhany, K. (2015) Optimum design of a PID controller for the adaptive torsion wing. Aeronautical Journal, 119 (1217), 871-889.

Record type: Article

Abstract

This paper presents the optimum design of a PID controller for the Adaptive Torsion Wing (ATW) using the genetic algorithm (GA) optimiser. The ATW is a thin-wall, two-spar wingbox whose torsional stiffness can be adjusted by translating the spar webs in the chordwise direction inward and towards each. The reduction in torsional stiffness allows external aerodynamic loads to deform the wing and maintain its shape. The ATW is integrated within the wing of a representative UAV to replace conventional ailerons and provide roll control. The ATW is modelled as a two-dimensional equivalent aerofoil using bending and torsion shape functions to express the equations of motion in terms of the twist angle and plunge displacement at the wingtip. The full equations of motion for the ATW equivalent aerofoil were derived using Lagrangian mechanics. The aerodynamic lift and moment acting on the aerofoil were modelled using Theodorsen’s unsteady aerodynamic theory. The equations of motion are then linearised around an equilibrium position and the GA is employed to design a PID controller for the linearised system to minimise the actuation power require. Finally, the sizing and selection of a suitable actuator is performed

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Published date: July 2015
Organisations: Aerodynamics & Flight Mechanics Group

Identifiers

Local EPrints ID: 381531
URI: http://eprints.soton.ac.uk/id/eprint/381531
ISSN: 0001-9240
PURE UUID: 0cdd95c7-e6c6-4a46-99c4-f173ba9c0508

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Date deposited: 09 Oct 2015 08:32
Last modified: 19 Jul 2019 20:33

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Contributors

Author: M. Bourchak
Author: R. Ajaj
Author: E.I. Saavedra Flores
Author: M. Khalid
Author: K. Juhany

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