ietcta_MoralesTurner_final.pdf (1.12 MB)
Download file

Force control of semi-active valve lag dampers for vibration reduction in helicopters

Download (1.12 MB)
journal contribution
posted on 05.04.2016, 11:04 by Rafael Mauricio Morales, M. C. Turner, P. Court, R. Hilditch, I. Postlethwaite
This study considers the design of a closed-loop force-tracking system for a semi-active damper, designed to be used to reduce in-plane vibrations caused by helicopter rotor blades during steady-state forward flight conditions. The study describes the development of the control law and includes details of (i) how the initial mathematical model of the system is adapted for controller design; (ii) how a non-linear dynamic inversion (NDI) control law is modified into a form suitable for implementation; and (iii) how the free parameters in the NDI controller can be optimised for various different operational modes. The success of the approach is demonstrated through both force-tracking simulations and also more comprehensive tests in which the controller is incorporated into a large-scale vibration simulation of the AgustaWestland 101 helicopter. The results show that the NDI-based controller can provide a satisfactory level of performance and hence greatly assist in the reduction of unwanted vibrations.

History

Citation

IET Control Theory and Applications, 2014, 8 (6), pp. 409-419 (11)

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Engineering

Version

AM (Accepted Manuscript)

Published in

IET Control Theory and Applications

Publisher

Institution of Engineering and Technology (IET)

issn

1751-8644

eissn

1751-8652

Acceptance date

10/06/2013

Copyright date

2014

Available date

05/04/2016

Publisher version

http://digital-library.theiet.org/content/journals/10.1049/iet-cta.2012.0397 http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6780900

Language

en