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Adaptive feedforward control design for gust loads alleviation and LCO suppression

Adaptive feedforward control design for gust loads alleviation and LCO suppression
Adaptive feedforward control design for gust loads alleviation and LCO suppression
An adaptive feedforward controller is designed for gust loads alleviation and limit cycle oscillations suppression. Two sets of basis functions, based on the finite impulse response and modified finite impulse response approaches, are investigated to design the controller for gust loads alleviation. Limit cycle oscillations suppression is shown by using the modified finite impulse response controller. Worst case gust search is performed by using a nonlinear technique of model reduction to speed up the costs of calculations. Both the “one–minus–cosine” and Von Kármán continuous turbulence gusts of different intensities were generated to examine the performance of controllers. The responses of these two types of gust can be reduced effectively by finite impulse response controller in the whole process, while the modified finite impulse response controller is found to increase the loads during the initial transient response. The above two types of gust induced limit cycle oscillations were used to test the modified finite impulse response controller. Results show that it can suppress limit cycle oscillations to some extent
Wang, Yongzhi
afdf0cf6-37d8-475b-900b-84449e501ae2
Da Ronch, A.
a2f36b97-b881-44e9-8a78-dd76fdf82f1a
Ghandchi-Tehrani, Maryam
c2251e5b-a029-46e2-b585-422120a7bc44
Li, E.
276ed15f-203d-44af-a797-0930952dd85c
Wang, Yongzhi
afdf0cf6-37d8-475b-900b-84449e501ae2
Da Ronch, A.
a2f36b97-b881-44e9-8a78-dd76fdf82f1a
Ghandchi-Tehrani, Maryam
c2251e5b-a029-46e2-b585-422120a7bc44
Li, E.
276ed15f-203d-44af-a797-0930952dd85c

Wang, Yongzhi, Da Ronch, A., Ghandchi-Tehrani, Maryam and Li, E. (2014) Adaptive feedforward control design for gust loads alleviation and LCO suppression. ICAS 2014, 29th Congress of the International Council of the Aeronautical Sciences, Russian Federation, Russian Federation. 07 - 12 Sep 2014. 14 pp . (doi:10.13140/2.1.4464.2566).

Record type: Conference or Workshop Item (Paper)

Abstract

An adaptive feedforward controller is designed for gust loads alleviation and limit cycle oscillations suppression. Two sets of basis functions, based on the finite impulse response and modified finite impulse response approaches, are investigated to design the controller for gust loads alleviation. Limit cycle oscillations suppression is shown by using the modified finite impulse response controller. Worst case gust search is performed by using a nonlinear technique of model reduction to speed up the costs of calculations. Both the “one–minus–cosine” and Von Kármán continuous turbulence gusts of different intensities were generated to examine the performance of controllers. The responses of these two types of gust can be reduced effectively by finite impulse response controller in the whole process, while the modified finite impulse response controller is found to increase the loads during the initial transient response. The above two types of gust induced limit cycle oscillations were used to test the modified finite impulse response controller. Results show that it can suppress limit cycle oscillations to some extent

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Published date: 7 September 2014
Venue - Dates: ICAS 2014, 29th Congress of the International Council of the Aeronautical Sciences, Russian Federation, Russian Federation, 2014-09-07 - 2014-09-12
Organisations: Aerodynamics & Flight Mechanics Group

Identifiers

Local EPrints ID: 369382
URI: http://eprints.soton.ac.uk/id/eprint/369382
PURE UUID: f438e2a3-628a-47a6-9bb3-9c15267c9f0c
ORCID for A. Da Ronch: ORCID iD orcid.org/0000-0001-7428-6935

Catalogue record

Date deposited: 13 Oct 2014 09:00
Last modified: 15 Mar 2024 03:46

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Contributors

Author: Yongzhi Wang
Author: A. Da Ronch ORCID iD
Author: E. Li

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