Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/37144
Title: Actuator constraints handling in higher harmonic control algorithms for vibration reduction
Authors: Morales, Rafael Mauricio
Turner, M. C.
Court, P.
Hutchint, C.
First Published: 2014
Presented at: 40th European Rotorcraft Forum 2014, 2 September 2014-5 September 2014, Southampton, UK
Publisher: Royal Aeronautical Society
Citation: 40th European Rotorcraft Forum 2014, 2014, 2, pp. 1094-1101
Abstract: This paper discuses the advantages of using quadratic-programming-based higher harmonic control (HHC) algorithms for vibration reduction applications. Their benefits when dealing with actuator constraints in comparison with scaling, truncation and weight manipulation of the control efforts have been exposed in previous works. The main contribution of this work is the discussion in more detail of important implementation aspects of the quadratic programming in the context of Higher Harmonic Control. Equivalent translations of flapping constraints via constraints of the Fourier coefficients are not always possible in a quadratic-programming framework and approximations of the feasible region are required. Such approximations should be taken into consideration carefully to avoid significant loss of optimal performance. The benefits of incorporating quadratic programming algorithms in the HHC design problem are shown for a linearised representation of a five-blade coupled rotor-fuselage model augmented with active trailing edge flaps.
ISBN: 9781510802568
Links: http://www.erf2014.com/
http://aerosociety.com/
http://hdl.handle.net/2381/37144
Version: Post-print
Status: Peer-reviewed
Type: Conference Paper
Rights: Copyright © the authors, 2014. Deposited in accordance with Copyright Statement contained in the attached file.
Appears in Collections:Conference Papers & Presentations, Dept. of Engineering

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