Prevention of wing rock motion for lightly damped aircraft in lateral-directional dynamics

作     者：Emad N.Abdulwahab 陈红全 

作者机构：College of Aerospace EngineeringNanjing University of Aeronautics and Astronautics 

出 版 物：《Journal of Harbin Institute of Technology(New Series)》 (哈尔滨工业大学学报（英文版）)

年 卷 期：2008年第15卷第5期

页      面：613-619页

核心收录：

学科分类：0810[工学-信息与通信工程] 080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）] 

主　　题：机翼振动 非线性动态方程 周期运动控制 航空技术 

摘      要：Based on the Ricatti technique, the methodology for preventing the limit cycle accomplished by adding a control function to the original equation of wing rock motion is presented in this paper. To analyze the state variables of the system, the complete set of nonlinear equations of motion including an effective linear control function was solved for A-4D and Mig-21 Aircraft. The roll angle responding to the linear control function for both models was estimated when the systems were tested under different damping ratios. The numerical results show that a linear control function including both the roll attitude and the roll rate is sufficient to suppress the wing rock motion with an acceptable error in desired time. A good agreement between the numerical results and the published work is obtained for the limit cycle oscillation existence at different damping ratios.