This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Spencer, M. G. Articles by Chopra, I. Search for Related Content Social Bookmarking                         What's this?

Adaptive Neurocontrol of Simulated Rotor Vibrations Using Trailing Edge Flaps

Robert M. Sanner

Inderjit Chopra

Alfred Gessow Rotorcraft Center, Department of Aerospace Engineering, University of Maryland, College Park, MD 20742

Smart structure activated trailing edge flaps are capable of actively altering the aerodynamic loads on rotor blades. Coupled with a suitable feedback control law, such actuators could potentially be used to counter the vibrations induced by periodic aerodynamic loading on the blades, without the bandwidth constraints and with a potential of lower weight penalties incurred by servo actuation methods. This paper explores new, robust individual blade control (IBC) methodologies for vibration suppression using a piezoactuated trailing edge flap. The controllers employ a single hidden layer neural network, learning in real time, to adaptively cancel the effects of periodic aerodynamic loads on the blades, greatly attenuating the resulting vibrations. Both collocated and noncollocated sensor/actuator pairs are considered. Proofs of the stability and convergence of the proposed neurocontrol strategies are provided, and numerical simulation results for a one-eighth Froude scale blade model are given which demonstrate that the controller can nearly eliminate the blade vibration arising from a wide variety of unknown, periodic disturbance sources.

Journal of Intelligent Material Systems and Structures, Vol. 10, No. 11, 855-871 (1999)
DOI: 10.1106/RXOW-UJ7M-QEL9-E58P


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?

This article has been cited by other articles:

				S.R. Viswamurthy and R. Ganguli Using the Complete Authority of Multiple Active Trailing-edge Flaps for Helicopter Vibration Control Journal of Vibration and Control, August 1, 2008; 14(8): 1175 - 1199. [Abstract] [PDF]

				V. Giurgiutiu Review of Smart-Materials Actuation Solutions for Aeroelastic and Vibration Control Journal of Intelligent Material Systems and Structures, July 1, 2000; 11(7): 525 - 544. [Abstract] [PDF]