Delayed feedback control for airfoil flutter

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (18) : 58-61.

Luo Mengxiang, Gao Mingzhou, Cai Guoping

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Abstract

The delayed feedback control for a two-dimensional airfoil flutter was investigated.The dynamic equation for airfoil flutter was established using the Lagrange equation, in which the cubic nonlinearity describing the wing pitching stiffness was taken in account.Then the instantaneous optimal control method was used to design a nonlinear delayed feedback controller.Finally, numerical simulations were carried out to demonstrate the effectiveness of the proposed controller.The simulation results indicate that the delayed feedback controller proposed can effectively suppress the airfoil flutter.

Key words

airfoil / flutter / instantaneous optimal control / time delay

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Luo Mengxiang, Gao Mingzhou, Cai Guoping. Delayed feedback control for airfoil flutter[J]. Journal of Vibration and Shock, 2016, 35(18): 58-61

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