Research and Analysis on Flight Stability Improvement of the Quadcopter

In recent years, with the rapid development of the UAV manufacturing technology, great progress has also been made in the Quadcopter. Usually, the small Quadcopter is flexible and easy to be operated. The stability is one of the most important evaluation indexes for the flight quality of the Quadcopter. However, external environmental impacts(such as the wind power) or internal design problems often cause the Quadcopter to deviate to one side during the flight. Therefore, in order to solve this problem, this paper adopts the method of physical weight gain and low-cost design. Then, we did experiments in the windless condition indoors and in the windy condition outdoors. We test and analyze how weight gain affects the Quadcopter's flight stability. By comparing the test group and control group, we find that test group is more stable and faster than the control group. Also, the experiments show that when the weight of the Quadcopter increases, with the help of the low-cost design and the mathematic model, the flight offset can be reduced to 20% at most. Thus, the flight stability of the Quadcopter is improved as well. In addition, our stability design is not affected by the environment. Also, this design doesn't need to change the internal structure of the Quadcopter.