摘要
利用大展弦比机翼后缘不同位置上的操纵面进行颤振主动控制,通过将大展弦比机翼简化为包含弯曲和扭转两种模态的悬臂梁结构,根据片条理论,建立包含操纵面运动规律的大展弦比机翼气动弹性方程.由于简化的数值模型与实际模型之间存在一定的误差,通常模型的运动方程包含有不确定参量用来表示建模误差.鲁棒控制方法能够得到一个有效控制器,控制这种带有模型不确定参量的运动方程.文中论述利用鲁棒μ控制方法,研究有两个操纵面大展弦比机翼的鲁棒控制问题.仿真结果表明鲁棒μ控制可以有效地抑制大展弦比机翼的受扰振动,提高颤振临界速度,且两个操纵面共同控制效果比单操纵面显著.
The flutter suppression for a high-aspect-ratio（HAR） wing with two control surfaces was presented.The flexible wing was modeled as a cantilever beam,including bending-torsional deformation.The aeroelastic equations in state space of HAR wing were established by using strip theory.The modeling error was considered by introducting some uncertain parameters in the aeroelastic equations of motion.Base on robust μ control method,the flutter suppression of the HAR wing was studied.Numerical simulation results show that μ controller can quickly stabilize the vibration of the HAR wing,and two control surfaces work better than a single control surface.
出处
《动力学与控制学报》
2011年第1期79-85,共7页
Journal of Dynamics and Control
关键词
大展弦比机翼
颤振主动控制
μ控制
多操纵面
high-aspect-ratio wing
flutter active control
μ controller
multiple control surface
