Abstract:This paper studied the design method of the LQG selftuning controller to suppress the flutter of a wing. The flexible wing model with a single trailingedge control surface was used in this study. The online identification was used to obtain the timevarying parameters of the system, and the Kalman filter was used to estimate the states of the system. Then, the control law was determined by solving a set of discretetime algebraic Riccati equations. All the developed algorithms were implemented on the Simulink platform. The simulation results show that the developed controller is effective and robust.