Research On Structure Design And Processing Technology Of Micro Flapping Wing Air Vehicle

Micro flapping-wing air vehicle has significant advantages such as small size,strong concealment,large thrust-to-weight ratio,and high flexibility.It has vast application potential in enemy infiltration operations,concealed reconnaissance,and post-disaster search and rescue.In recent years,it has attracted many research institutions’ interests.The characteristic size of the flapping-wing miniature air vehicle is at the micron level,and the overall size is only a few centimeters.Therefore,the traditional mechanical transmission mechanism,driving method,and manufacturing method are no longer applicable.New driving-transmission methods and micro-nano manufacturing methods are required.Nano-manufacturing methods are used to process and manufacture miniature flapping-wing air vehicle with low efficiency,high processing costs,and complex operations.In this paper,the structure design and processing technology of the aircraft are researched,aerodynamic analysis and calculations are carried out.A split-actuator micro air vehicle driven miniature flapping-wing air vehicle was designed,and proposed a rigid-flexible composite three-dimensional process to complete the air vehicle prototype.Finally,the influence of the driving signal amplitude and driving frequency on the amplitude and power of the driver is analyzed.The main research work is as follows:1.The movement of the wing was studied,its parameterized model was established,the aircraft system was modeled,and the appropriate flapping wing structure parameters and motion parameters were determined.2.Designed a miniature flapping-wing air vehicle with an overall size of30mm×15mm×3mm,which genuinely realizes the miniaturization of the air vehicle on the scale.The structure,size parameters,and performance indicators of the drive mechanism,transmission mechanism,and wings of the air vehicle are carried out.Based on analysis and calculation,a flexible spherical four-bar transmission mechanism was designed to avoid contact friction during movement and enable the mechanism to move flexibly at a micro-scale with low energy loss.3.A rigid-flexible composite three-dimensional process based on ultra-fast laser cutting was proposed.A set of ideal process parameters was obtained through experimental optimization,and the air vehicle prototype was manufactured.The flapping-wing air vehicle carried out an integrated design,reduced processing errors,improved processing efficiency,and researched overcoming thermal stress in the integrated processing process.Finally,in the 80mm×80mm sheet processing range,22 air vehicle bodies were obtained at one time.The structure realizes the mass production of prototypes.4.The piezoelectric drive test platform was built;the laws of the piezoelectric drive’s drive amplitude,frequency and system power were analyzed.Finally,the decoupling flapping motion of the air vehicle prototype was realized.