Gust load alleviation using nonlinear feedforward control
Gust load alleviation using nonlinear feedforward control
A strategy based on feedforward control for gust loads alleviation of a nonlinear aeroelastic model is considered. The model is representative of a typical wing section with a trailing-edge flap and with a polynomial nonlinearity in the structural model. The aerodynamics is given by thin aerofoil theory. First, the effects of structural nonlinearity in the dynamic response of the open-loop system are evaluated. Then, it is shown that the performance of the controller is greatly affected by the approximations made in the internal model of the controlled plant. To suppress gust-induced vibrations of an intrinsically nonlinear plant, the control performance is degraded when using a linear representation for the internal model. The control strategy performs well when including all nonlinearities in the model
978-972-752-165-4
Ghandchi Tehrani, M.
c2251e5b-a029-46e2-b585-422120a7bc44
Da Ronch, A.
a2f36b97-b881-44e9-8a78-dd76fdf82f1a
30 June 2014
Ghandchi Tehrani, M.
c2251e5b-a029-46e2-b585-422120a7bc44
Da Ronch, A.
a2f36b97-b881-44e9-8a78-dd76fdf82f1a
Ghandchi Tehrani, M. and Da Ronch, A.
(2014)
Gust load alleviation using nonlinear feedforward control.
IX International Conference on Structural Dynamics, EURODYN 2014, Porto, Portugal.
30 Jun - 02 Jul 2014.
6 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
A strategy based on feedforward control for gust loads alleviation of a nonlinear aeroelastic model is considered. The model is representative of a typical wing section with a trailing-edge flap and with a polynomial nonlinearity in the structural model. The aerodynamics is given by thin aerofoil theory. First, the effects of structural nonlinearity in the dynamic response of the open-loop system are evaluated. Then, it is shown that the performance of the controller is greatly affected by the approximations made in the internal model of the controlled plant. To suppress gust-induced vibrations of an intrinsically nonlinear plant, the control performance is degraded when using a linear representation for the internal model. The control strategy performs well when including all nonlinearities in the model
Text
Eurodyn2014-paper-MGT_ADR_3.pdf
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Published date: 30 June 2014
Venue - Dates:
IX International Conference on Structural Dynamics, EURODYN 2014, Porto, Portugal, 2014-06-30 - 2014-07-02
Organisations:
Aerodynamics & Flight Mechanics Group
Identifiers
Local EPrints ID: 367288
URI: http://eprints.soton.ac.uk/id/eprint/367288
ISBN: 978-972-752-165-4
PURE UUID: f611f6d6-0641-4adb-ab1e-d2ac009fcd23
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Date deposited: 28 Jul 2014 08:43
Last modified: 15 Mar 2024 03:46
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