Active Flutter Suppression of a Two-Dimensional Airfoil Based on Sliding Mode Control Method

摘要：

Flutter, a dynamic instability of aircrafts, may degrade the safety of the structures. Active flutter suppression (AFS) is a considerable solution to this issue. Sliding mode control (SMC) method, a nonlinear control strategy, is applied to AFS of a typical two-dimensional airfoil in this work. The airfoil has a trailing-edge flap utilized for flutter control. The system involves a two-DOF (degree-of-freedom) motion whose equations are constructed by using quasi-steady aerodynamic forces. First, the AFS system is designed by state feedback SMC method to suppress the flutter. Then, a sliding mode observer (SMO) is incorporated for further improvements. Finally, classical Runge-Kutta (RK) algorithm is utilized for simulations. The results indicate that the SMO can estimate the system states fast. Combining with the SMO, the controller could suppress the flutter at 14.8％ above the open-loop flutter boundary.

作者: SONG Chen WU Zhigang YANG Chao

作者单位: School of Aeronautic Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing,100191,P.R.China

会议类型: 国际会议

会议名称: The 3rd International Symposium on Systems and Control in Aeronautics and Astronautics(第三届航空航天系统与控制国际会议 ISSCAA 2010)

会议地点: 哈尔滨

会议语种:英文

页码: 1149-1153

在线出版日期: 2010-01-08（万方平台首次上网日期，不代表论文的发表时间）