扑翼微型飞行器飞行姿态模型研究

扑翼微型飞行器飞行质量主要取决于能否对其飞行姿态进行有效控制,而建立准确的飞行姿态模型尤为重要.通过对鸟和昆虫的飞行机理尤其是其飞行过程中翅膀的运动规律进行研究,并考虑机械设计方面的因素,对扑翼微型飞行器的飞行姿态建立了较为完整的动力学模型和数学模型.由分析可知机身所受外力为空气动力、重力和机翼作用于机身的驱动力,而采用扑动与扭转两个自由度飞行的机翼所产生的驱动力是由瞬时平移力和扭转循环力合成的瞬时空气动力.数值仿真证实了动力学模型的正确性.

A study on flight attitude model of flapping wing micro air vehicle

The flight quality of Flapping Wing Micro Aerial Vehicle(FWMAV) depends much upon efficient control of flight attitude.So, an accurate model of flight attitude is of utmost importance.The fly mechanism of birds and big insects,especially the motion rule of wings were investigated,and the factors on mechanical design were also considered to establish a complete dynamic model and mathematical model of flight attitude of FWMAV.It is learnt that the airframe is subjected to aerodynamic force,gravity,and propulsion from airfoils.For airfoil motion with two degrees of freedom-flapping and rotation,the propulsion is an instantaneous aerodynamic force combined from instantaneous translational force and rotational force.The numerical simulation also demonstrates the validity of the dynamic model.