一种平行曲柄连杆扑翼机构的设计、优化与实现

提出了一种来自于昆虫结构启发的平 行曲柄连杆的扑翼机构. 该机构依靠两组平行布置的曲 柄连杆和连杆间的翼面控制机构实现, 既能够保证扑翼运动左右翼面的对称性, 又能够实现挥拍 攻角的调节和控制, 采用MATLAB的非线性优化工具对该扑翼机构进行了运动参数的 优化, 并设计制作了大比例的实物扑翼模型进行测力分析. 结果验证了这种扑 翼机构能够给出非定常高升力.

DESIGN,OPTIMIZATION AND IMPLEMENTATION OF A PARALLEL CRANK-ROCKER FLAPPING MECHANISM

crank-rocker flapping mechanism inspired by insects is proposed based on the analysis of the normal flapping mechanism. The parallel crank-rocker is a kind of spatial linkage mechanism, in which due to the two parallel crank-rockers and the wing control mechanism between them, the flapping mechanism can not only keep the symmetry of the left and right wings during the motion, but also provide an accurate control of stroke angle and angle of attack simulation. MATLAB nonlinear optimization toolbox is employed to achieve the motion optimization. A scaled model is developed based the optimization and the reference motion of the model is a hovering flight Hawkmoth. The force measurement results reveal that the flapping mechanism can provide a high unsteady lift force, and the flapping mechanism is shown to be one of a practicable and novel design in flapping Micro Aero Vehicle research.