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首页> 外文会议>Conference on Active and passive smart structures and integrated systems; 20090309-12; San Diego, CA(US) >Dynamic Behavior of LIPCA and Modification of a Four-bar Linkage for Mimicking Insect Flapping Frequency
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Dynamic Behavior of LIPCA and Modification of a Four-bar Linkage for Mimicking Insect Flapping Frequency

机译：LIPCA的动态行为和模仿昆虫拍打频率的四连杆机构的修改

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摘要

This paper describes an approach to increase the flapping frequency of a previously developed flapper actuated by Lightweight Piezo-Composite Actuator (LIPCA) to mimic the flapping frequency of Allomyrina Dichotoma of which flapping frequency is typically 30Hz. To achieve this purpose, the dynamic characteristics of the LIPCA and modification of a four-bar linkage have been studied. The parametric study showed that an appropriate combination of linkage lengths can provide a better moment transmission for a given flapping angle amplification, thus the flapping frequency could be increased. A newly designed four-bar linkage system was fabricated based on the parametric study and then tested to verify the possibility. The test results showed that the optimal flapping frequency of the modified flapper was measured to be about 15 Hz, which is about 50% increases compared to that of the previous flapper. The modified flapper could also produce 3.02 gram force in vertical direction with 97 degree of flapping angle at the optimal frequency.
机译：本文介绍了一种增加先前开发的轻型压电复合驱动器（LIPCA）的拍击器拍打频率的方法，该拍击器模仿拍打频率通常为30Hz的拟南芥（Allomyrina Dichotoma）的拍击频率。为了达到这个目的，已经研究了LIPCA的动态特性和四连杆机构的改进。参数研究表明，对于给定的拍打角度放大，合适的连杆长度组合可以提供更好的力矩传递，因此可以提高拍打频率。根据参数研究制造了新设计的四连杆系统，然后进行了测试以验证可能性。测试结果表明，改进型挡板的最佳拍击频率约为15 Hz，与之前的挡板相比增加了约50％。修改后的襟翼在最佳频率下还可以在垂直方向上产生3.02克的力，并具有97度的拍角。

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