Mechanical design and dynamics system identification of two-section Flapping Wing Aircraft

2019 International Conference on Advanced Electronic Materials, Computers and Materials Engineering

无线电电子学;计算机科学;材料科学

Liao, Wei^1 ; Ye, Zhixian^1 ; Song, Guanghua^1 ; Yang, Bowei^1

School of Aeronautics and Astronautics, Zhejiang University, Hangzhou

310000, China^1

关键词: Complex problems;    Flight efficiency;    Gradient Descent method;    Linear system model;    Loss functions;    Mechanical design;    System modeling;    Wing structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/563/3/032010/pdf
DOI  :  10.1088/1757-899X/563/3/032010

来源: IOP

【 摘 要 】

The mechanical design and system identification of the Flapping Wing Aircraft (FWA) has always been a problem. In this paper, we design a two-section FWA through the study of bird flight, where the wing structure is divided into the inner wing and outer wing, which can imitate the flight of birds. When flapping upward, the wings can be folded to reduce resistance, and when flapping downward, the wings can be expanded to increase lift. This flying method can improve the flight efficiency. The aircraft we designed has achieved flexible flight under human operation. Aiming at the complex problem of dynamic modeling of FWA, this paper proposes a linear system model by analyzing the force of the aircraft.We use the collected flight data to train the system model. The training of the model uses the gradient descent method to minimize the loss function, and the accuracy of the model is verified with the test data. The experimental results show that the system model can accurately calculate the acceleration, velocity, angle velocity and orientation of the aircraft based on the current control input.