Adaptive feedforward control for gust-induced aeroelastic vibrations
Adaptive feedforward control for gust-induced aeroelastic vibrations
This paper demonstrates the implementation of an adaptive feedforward controller to reduce structural vibrations on a wing typical section. The aeroelastic model includes a structural nonlinearity, which is modelled in a polynomial form. Aeroelastic vibrations are excited induced by several gusts and atmospheric turbulence, including the discrete “one-minus-cosine” and a notably good approximation in the time-domain to the von Kármán spectrum. The control strategy based on the adaptive feedforward controller has several advantages compared to the standard feedback controller. The controller gains, which are updated in real-time during the gust encounter, are found solving a minimization problem using the finite impulse responses as basisc functions. To make progress with the application in aeroelasticity, a single-input single-output controller is designed measuring the wing torsional deformation. For both deterministic and random atmospheric shapes, the controller was found successful in alleviating the aeroelastic vibrations. The impact of the control action on the unmeasured structural modes was found minimal.
adaptive feedforward control, structural vibrations, gust loads alleviation, nonlinear aeroelasticity
Wang, Yongzhi
afdf0cf6-37d8-475b-900b-84449e501ae2
Da Ronch, Andrea
a2f36b97-b881-44e9-8a78-dd76fdf82f1a
Ghandchi Tehrani, Maryam
c2251e5b-a029-46e2-b585-422120a7bc44
Wang, Yongzhi
afdf0cf6-37d8-475b-900b-84449e501ae2
Da Ronch, Andrea
a2f36b97-b881-44e9-8a78-dd76fdf82f1a
Ghandchi Tehrani, Maryam
c2251e5b-a029-46e2-b585-422120a7bc44
Wang, Yongzhi, Da Ronch, Andrea and Ghandchi Tehrani, Maryam
(2018)
Adaptive feedforward control for gust-induced aeroelastic vibrations.
Aerospace, 5 (3), [86].
(doi:10.3390/aerospace5030086).
Abstract
This paper demonstrates the implementation of an adaptive feedforward controller to reduce structural vibrations on a wing typical section. The aeroelastic model includes a structural nonlinearity, which is modelled in a polynomial form. Aeroelastic vibrations are excited induced by several gusts and atmospheric turbulence, including the discrete “one-minus-cosine” and a notably good approximation in the time-domain to the von Kármán spectrum. The control strategy based on the adaptive feedforward controller has several advantages compared to the standard feedback controller. The controller gains, which are updated in real-time during the gust encounter, are found solving a minimization problem using the finite impulse responses as basisc functions. To make progress with the application in aeroelasticity, a single-input single-output controller is designed measuring the wing torsional deformation. For both deterministic and random atmospheric shapes, the controller was found successful in alleviating the aeroelastic vibrations. The impact of the control action on the unmeasured structural modes was found minimal.
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manuscript.v6_yw
- Accepted Manuscript
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Accepted/In Press date: 3 August 2018
e-pub ahead of print date: 10 August 2018
Keywords:
adaptive feedforward control, structural vibrations, gust loads alleviation, nonlinear aeroelasticity
Identifiers
Local EPrints ID: 422936
URI: http://eprints.soton.ac.uk/id/eprint/422936
ISSN: 2226-4310
PURE UUID: fff62623-9c5d-4765-9ea3-0d5c45be0644
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Date deposited: 08 Aug 2018 16:30
Last modified: 16 Mar 2024 06:58
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Author:
Yongzhi Wang
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