Closed-loop vibration control simulation of a helicopter active rotor with trailing-edge flaps based on the weighted-least-squares-error identification method

Affiliation of Author(s):航空学院

Journal:J Vib Shock

Abstract:An active rotor is effective active vibration control for helicopters. Focusing on closed-loop vibration control of an active rotor with active controlled flap (ACF), a coupled aero-elastic model with ACF was developed. Open-loop control simulation for the ACF was conducted through amplitude sweep, frequency sweep, and phase sweep, and their influence on rotor vibratory loads was studied. The higher harmonic control algorithm was employed in the closed-loop control simulation, while the weighted-least-squares-error (WLSE) method was used to identify the transfer matrix of the active rotor system. Actuator saturation was also taken into account using the auto-weighting method. The controller demonstrates satisfying control performance, and the vertical vibratory load of passing frequency is reduced by up to 87%. The simulation results will be useful to direct the engineering implementation of the closed-loop control system for the active rotor. © 2019, Editorial Office of Journal of Vibration and Shock. All right reserved.

ISSN No.:1000-3835

Translation or Not:no

Date of Publication:2019-02-28

Co-author:Zhou, Jinlong,ywd,Liu, Shiming

Correspondence Author:Dong Linghua

Date of Publication:2019-02-28