Iterative Learning Control of a Nonlinear Aeroelastic System despite Gust Load

作者：Xu, Xing-zhi^*; Gao, Ya-kui; Zhang, Wei-guo

来源：International Journal of Aerospace Engineering, 2015, 2015: 237804.

DOI：10.1155/2015/237804

• UNCERTAINTY QUANTIFICATION
• WING SECTION
• AIRFOIL

The development of a control strategy appropriate for the suppression of aeroelastic vibration of a two-dimensional nonlinear wing section based on iterative learning control (ILC) theory is described. Structural stiffness in pitch degree of freedom is represented by nonlinear polynomials. The uncontrolled aeroelastic model exhibits limit cycle oscillations beyond a critical value of the free-stream velocity. Using a single trailing-edge control surface as the control input, a ILC law under alignment condition is developed to ensure convergence of state tracking error. A novel Barrier Lyapunov BLF) is incorporated in the proposed Barrier Composite Energy BCEF) approach. Numerical simulation results clearly demonstrate the effectiveness of the control strategy toward suppressing aeroelastic vibration in the presence of parameter uncertainties and triangular, sinusoidal, and graded gust loads.

• 出版日期2015
• 单位西北工业大学