Design Overview of a Resonant Wing Actuation Mechanism for Application in Flapping Wing MAVs
Design Overview of a Resonant Wing Actuation Mechanism for Application in Flapping Wing MAVs
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DOI：
10.1260/175682909790291500
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发表时间：
2009-12-01
影响因子：
1.4
通讯作者：
van Keulen, F.
中科院分区：
文献类型：
--
作者：
Bolsman, C. T.;Goosen, J. F. L.;van Keulen, F.
本文对四翼扑翼微型飞行器的驱动机构进行了设计和分析。该设计旨在利用飞虫所表现出的谐振特性，以减少能量消耗并提供振幅放大。为了实现共振，必须在设计中加入一个非常灵活的结构。微型飞行器机体采用的弹性结构为环形结构。环通过柔性放大机构耦合到机翼上，该机构将环的偏转转换和放大为机翼根部的大旋转。初始尺寸确定后，对结构进行有限元分析（特征值分析和瞬态分析）。在初步分析的基础上，实现了结构的后续测试。首先对机翼进行独立分析，以便调整机翼铰链刚度以有效地产生升力，利用被动机翼俯仰。机翼采用准稳态气动模型进行调整。对调整后的机翼进行了测试，以判断制造的机翼是否反映了预期的性能。将环形胸腔结构与机翼组合，测试组合结构的共振性能。建立了一个测试装置来量化举升产量。通过将原型悬吊在柔性梁上并测量模型被驱动时挠度的变化来测试升力。使用目前的原型机可以产生显著的升力。在共振驱动过程中存在的运动模式显示了正确的机翼旋转时间。
This paper shows the design and analysis of the actuation mechanism for a four winged flapping wing MAV. The design is set up to exploit resonant properties, as exhibited by flying insects, to reduce the energy expenditure and to provide amplitude amplification. In order to achieve resonance a significantly flexible structure has to be incorporated into the design. The elastic structure used for the body of the MAV is a ring type structure. The ring is coupled to the wings by a compliant amplification mechanism which transforms and amplifies the ring deflection into the large wing root rotation. After initial sizing, the structures are analyzed by finite elements (eigenvalue and transient analysis). Based on the initial analysis, the structures are realized to be tested later.The wings are first analyzed independent of the structure in order to tune wing hinge stiffness to efficiently generate lift, exploiting passive wing pitching. The wings are tuned by using a quasi-steady aerodynamic model. The tuned wings are tested to judge if manufactured wings reflect the predicted performance.The ring-shaped thorax structure is combined with the wings to test resonant performance of the assembled structure. A test setup is built to quantify lift production. Lift is tested by suspending the prototype on a flexible beam and measuring changes in deflection when the model is actuated. Significant lift is produced using the current prototype. Kinematic patterns present during resonant actuation show correct timing of wing rotation.