| 采用分布式压电驱动器的翼面热颤振主动抑制 |
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| 引用本文： | 惠俊鹏,杨超,杨勇.采用分布式压电驱动器的翼面热颤振主动抑制[J].宇航学报,2010,31(12). |
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| 作者姓名： | 惠俊鹏 杨超 杨勇 |
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| 作者单位： | 1. 中国运载火箭技术研究院,北京,100076
2. 北京航空航天大学航空科学与工程学院,北京,100191 |
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| 摘 要： | 高超声速气动加热会严重影响飞行器结构的颤振特性,本文开展了采用分布式压电驱动器的热颤振主动抑制方法研究。以某飞行器小展弦比翼面为研究对象,进行了常温和热载荷边界条件下的结构振动和颤振分析。在此基础上,对频域非定常气动力进行有理函数拟合,建立包含压电驱动器的翼面耦合结构系统状态空间形式的运动方程;对典型热载荷边界条件下的被控对象设计颤振主动抑制控制律,分别设计出LQG及PID控制器;对比分析了系统开、闭环颤振特性。结果表明,通过主动控制律的实施,达到了热颤振主动抑制的目的,验证了这种颤振主动抑制方法的有效性。
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| 关 键 词： | 热气动弹性 热颤振 高超声速 颤振主动抑制 压电驱动器 |
Active Flutter Suppression for Wings Using Distributed Piezoelectric Actuators under Thermal Circumstances |
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| HUI Jun-peng,YANG Chao,YANG Yong.Active Flutter Suppression for Wings Using Distributed Piezoelectric Actuators under Thermal Circumstances[J].Journal of Astronautics,2010,31(12). |
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| Authors: | HUI Jun-peng YANG Chao YANG Yong |
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| Institution: | HUI Jun-peng1,YANG Chao2,YANG Yong1(1.China Academy of Launch Vehicle Technology,Beijing 100076,China,2.Aeronautic School of Science and Technology,Beijing University of Aeronautics and Astronautics,Beijing 100191,China) |
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| Abstract: | Flutter characteristics of hypersonic flight vehicles can be severely affected by aerodynamic heating,and an investigation of active flutter suppression for wings using distributed piezoelectric actuators is performed in this paper under thermal circumstances.A finite element model of a low aspect-ratio wing is built and its flutter characteristics as well as natural dynamics characteristics are analyzed under both normal temperature circumstance and thermal circumstance.Rational function approximation of u... |
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| Keywords: | Aerothermoelasticity Thermal flutter Hypersonic Active flutter suppression Piezoelectric actuator |
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