压电致动器扑翼结构动力学仿真

采用传统扑动机构的微型扑翼,气动效率低、扑动能耗大。采用压电致动器的微型扑翼通过压电材料进行致动使机翼产生上下扑动,有效地将扑动机构和机翼两个主要系统进行集成,不仅节省重量,同时它具有任务变形自适应能力强、气动效率高和扑动能耗小的特点。通过PCL语言建立采用压电致动器的扑翼有限元模型,结合同尺寸扑翼气动力试验数据,进行采用压电致动器扑翼结构仿真。利用仿真结果研制采用压电致动器扑翼原理样机,研究表明,采用压电致动器后扑翼扑动频率得到明显提高,压电片可有效控制机翼的弯扭变形,有助于提高扑翼的气动效率。

Dynamic Simulation Analysis of Piezoelectrically Driven Flapping Wing

The aerodynamic efficiency is low,the energy consumption is high for flapping to micro flapping wing used traditional mechanism.The bionic flapping wing driven by piezoelectric materials effectively integrates flapping mechanism and the wings.It is not only to save weight but also to be the task of deformation and strong adaptive ability,high aerodynamic efficiency,low energy consumption characteristics of mechanism.It is to establish finite element model of piezoelectric flapping wing by PCL language.The structure simulation of piezoelectrically driven bionic flapping wing is carried out with the size of the aerodynamic force of the experimental data.The piezoelectrically driven bionic flapping wing is developed by using simulation results.The studies show flapping frequency of bionic flapping wing is improved obviously after using piezoelectric actuator.The piezoelectric patches can effectively control wing bending and torsion deformation,and help to improve aerodynamic efficiency of flapping wing.