二元翼段间隙非线性颤振的模糊控制  

Airfoil control surface LCO suppression with Fuzzy logic control

作　　者：张军红[1] 韩景龙[1] 

机构地区：[1]南京航空航天大学振动工程研究所,南京210016

出　　处：《振动与冲击》2012年第6期58-61,82,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金(10872089)

摘　　要：根据模糊控制不依赖于被控对象的精确模型,对参数变化不敏感,具有很强鲁棒性的特点,提出一种模糊逻辑控制器,对包含间隙的二元机翼极限环振荡进行控制,并对其响应机理进行探讨和研究。数值仿真结果表明,模糊控制器能够有效抑制非线性极限环振动,使系统迅速达到稳定,提高系统颤振速度。A method using fuzzy logic-based control to suppress limit cycle oscillation（LCO） of an airfoil with control panel freeplay was studied.As fuzzy logic control was not dependent on the accurate model of a controlled object and not sensitive to varying of its parameters,a fuzzy logic controller was proposed to control LCO of an airfoil with control panel freeplay.The response mechanism of the airfoil system was explored.The system state-space function was built in MATLAB/SIMULINK environment.The simulation results showed that such a controller can suppress the non-linear LCO of the airfoil system effectively,quickly stabilize the system and improve the system flutter speed.

关 键 词：气动伺服弹性 间隙 颤振 模糊控制 

分 类 号：V215.3[航空宇航科学与技术—航空宇航推进理论与工程]