MIT Libraries logoDSpace@MIT

MIT
View Item 
  • DSpace@MIT Home
  • MIT Open Access Articles
  • MIT Open Access Articles
  • View Item
  • DSpace@MIT Home
  • MIT Open Access Articles
  • MIT Open Access Articles
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Gain-Scheduled Higher Harmonic Control for Full Flight Envelope Vibration Reduction

Author(s)
Fan, Frank H.; Hall, Steven
Thumbnail
DownloadAHSF2014_8.pdf (1.379Mb)
OPEN_ACCESS_POLICY

Open Access Policy

Creative Commons Attribution-Noncommercial-Share Alike

Terms of use
Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/
Metadata
Show full item record
Abstract
This paper investigates the dynamics of the SMART rotor, and presents a method to design a gain-scheduled controller to reduce the harmonic vibration throughout the flight envelope. The dynamics of the SMART rotor was examined at various flight conditions through nonlinear simulation. The simulation results showed that the dynamics is strongly dependent on the advance ratio, but only weakly dependent on the blade loading and the rotor shaft angle. To reduce the higher harmonic vibration throughout the flight envelope, a controller gain-scheduled on the advance ratio is presented. Output from linear time-invariant higher harmonic controllers designed for different flight conditions are blended to form the gain-scheduled controller. Closed-loop simulations of the helicopter rotor undergoing transitional flight with increasing advance ratio were conducted. The results from the closed-loop simulations show that the 5 per rev normal vibration was reduced by over 97% at the rotor hub.
Date issued
2014-05
URI
http://hdl.handle.net/1721.1/97544
Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Journal
Proceedings of the American Helicopter Society 70th Annual Forum
Publisher
American Helicopter Society International, Inc.
Citation
Fan, Frank H., and Steven R. Hall. "Gain-Scheduled Higher Harmonic Control for Full Flight Envelope Vibration Reduction." American Helicopter Society 70th Annual Forum (May 2014).
Version: Author's final manuscript

Collections
  • MIT Open Access Articles

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

OA StatisticsStatistics by CountryStatistics by Department
MIT Libraries
PrivacyPermissionsAccessibilityContact us
MIT
Content created by the MIT Libraries, CC BY-NC unless otherwise noted. Notify us about copyright concerns.