Open AccessResearch on Vibration Suppression for AGARD Wing Based on State Space Model
Author(s) -
Xiaoyan Liu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/816/1/012001
Subject(s) - aeroelasticity , flutter , linear quadratic regulator , control theory (sociology) , aerodynamics , wing , observer (physics) , vibration , aerodynamic force , reduction (mathematics) , state space representation , state space , computer science , engineering , optimal control , mathematics , control (management) , physics , aerospace engineering , mathematical optimization , statistics , geometry , algorithm , quantum mechanics , artificial intelligence
Based on the Observer method, the unsteady aerodynamic reduced order model is established. The aerodynamic, structural and control parts are in the form of state space equations. The state feedback control law is designed by linear quadratic regulator (LQR) method, and the active flutter suppression of aeroelastic system is realized. The three-dimensional AGARD elastic wing is selected as an example. The simulation results show that the active control law designed by the model reduction technique can effectively stabilize the response of the system, and the critical speed of closed-loop flutter increases greatly.