| 二元机翼颤振抑制的次最优控制 |
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| 引用本文： | 许进林,姜长生. 二元机翼颤振抑制的次最优控制[J]. 航空兵器, 2009, 0(6): 17-21 |
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| 作者姓名： | 许进林 姜长生 |
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| 作者单位： | 南京航空航天大学,南京,210016;南京航空航天大学,南京,210016 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 非刚性机翼的颤振是其从气流中吸收能量引起的一种自激振荡。颤振的后果往往是灾难性的。本文采用超声电机作为作动器来实现含控制舵面的二元机翼的颤振主动抑制。首先设计了带有控制面的二元机翼颤振模型,建立了超声电机作动器的传递函数模型。在此基础上推导出机翼-控制面的三自由度气动弹性状态空间方程,并根据输出反馈设计了次最优控制律。数值仿真结果表明,次最优控制可以有效地提高颤振速度并抑制颤振的发生。
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| 关 键 词： | 超声电机 二元机翼 颤振主动抑制 次最优控制 数值仿真 |
Flutter Suppression of a Two-dimensional Airfoil Based on Suboptimal Control |
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| XU Jin-lin,JIANG Chang-sheng. Flutter Suppression of a Two-dimensional Airfoil Based on Suboptimal Control[J]. Aero Weaponry, 2009, 0(6): 17-21 |
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| Authors: | XU Jin-lin JIANG Chang-sheng |
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| Affiliation: | XU Jin-lin,JIANG Chang-sheng(Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China) |
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| Abstract: | Flutter is a vibration caused by energy absorbed by a non-rigid wing from the airstream.This results of flutter are always disastrous.This paper studies the active flutter suppression of the two-dimensional airfoil with control surface by using ultrasonic motor as the actuator.Firstly,the paper designs the flutter model of the two-dimensional airfoil with control surface,then sets up the transfer function model of the ultrasonic motor's actuator.Based on this,it infers the three-degree-of-freedom aeroelasti... |
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| Keywords: | ultrasonic motor two-dimensional airfoil active flutter suppression suboptimal control simulation |
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