Design And Realization Of Multi - Spiral Wing UAV Flight Control System

With the development of technology and modernization of many businesses, more Multi-rotor UAVs increasingly integrated into people’s lives.The Multi-rotor UAV have played a significant role in which makes a great difference in monitoring coal factories, preventing forest fire and so on. Multi-rotor UAV bring us much convenience with its low price, security and efficiency. It’s necessary to design a good flight control system.In this paper, UAV flight control system of autonomous design, including the formation of four rotor unmanned aerial vehicle, the flight control system design and realization of flight control system.In terms of the formation of four rotor unmanned, this passage mainly introduced the unmanned aerial vehicle flight principle, mechanical structure and the chip selection of corresponding detection unit, chip selection of mainly introduce the function and the corresponding hardware circuit diagram and circuit principle diagram.Flight control system design firstly make a whole analysis of four rotor unmanned aerial vehicle flight control system, and then carry on the design of each step, including the filter, gesture control and the design of cascade PID, give a specific chart on each part of the control system.On implementation flight control system, it is mainly for the realization of the design part, mainly including implementation of filter, the realization of the gesture control and the realization of the cascade PID.This paper adjust motor correspondingly by using the principle of aerodynamics to get the original data of four rotor unmanned aerial vehicle flight control. The realization of the filter is to collect the raw data and then use the IIR to do some filter corresponding filter processing. However, filtering processing uses mainly the data filter, this method is easy to cause a large error. And the realization of the attitude control is put the processed data into quaternion and euler Angle, get the four rotor unmanned aerial vehicle deflection angle.The realization of the cascade PID is to adjust to four rotor unmanned aerial vehicle gesture angle, to maintain the stability of the unmanned aerial vehicle flight.Finally, the four-rotor UAV flight control systems are tested prior to each module of the system test, and then test the entire system. Analysis of the corresponding data and making field test. Field test results show four-rotor UAV flight control system has good stability.