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首页> 外文期刊>Journal of aerospace engineering >Robust Flutter Suppression and Wind-Tunnel Tests of a Three-Dimensional Wing
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Robust Flutter Suppression and Wind-Tunnel Tests of a Three-Dimensional Wing

机译：三维机翼的鲁棒颤振抑制和风洞试验

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In this study, a novel reduced-order scheme is proposed to model the airspeed and the air density uncertainties of an aeroelastic system. Based on the present reduced-order scheme, the dimensions of uncertainties could be significantly reduced through separating the quadratic term of airspeed into the linear terms. Based on the proposed scheme, two robust controllers, i.e.,a single-input/single-output controller and a multi-input/multioutput controller, were designed to suppress the flutter instability of the aeroelastic system. To illustrate the performance of the designed robust controllers, a three-dimensional multiple-actuated wing was chosen as the test case. The numerical results show that the flutter instability can be effectively suppressed. Besides the numerical investigations, the wind-tunnel tests for active flutter suppression were also implemented to further verify the performance of the robust controllers. The experimental results showed that the present robust controllers could effectively suppress the flutter instability and expand the flutter boundary of the multiple-actuated wing.
机译：在这项研究中，提出了一种新颖的降阶方案来对空气弹性系统的空速和空气密度不确定性进行建模。根据目前的降阶方案，可以通过将空速的二次项分解为线性项来显着降低不确定性的大小。基于提出的方案，设计了两个鲁棒的控制器，即单输入/单输出控制器和多输入/多输出控制器，以抑制气动弹性系统的颤动不稳定性。为了说明设计的鲁棒控制器的性能，选择了三维多动翼作为测试案例。数值结果表明，颤振不稳定性可以得到有效抑制。除了数值研究之外，还进行了用于主动颤振抑制的风洞测试，以进一步验证鲁棒控制器的性能。实验结果表明，该鲁棒控制器能够有效抑制扑动不稳，并扩展了多翼机翼的扑动边界。

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