Research On Flight Simulation And Intelligent Control For Unmanned Aerial Vehicle

The unmanned aircraft is a kind of Unmanned Aerial Vehicle (UAV for short). It is widely used both in civil and military realms, and also it has been the hotspot to be studied and developed in the world. The study on UAV simulation is great helpful for the development of UAV and the training of the operator.The simulation based on computer system is an important way and technique to study the action of system and to investigate dynamic process and running orders of system. It is one of most widely used practical techniques. The flight simulation regards the running of the aircraft as the research object and faces to the simulation of the complicated system. The real-time flight simulation system is not only used for the research of flight performance, manipulating characteristic, flight control, guide and navigation, but also to be the basis of the flight simulator. In the thesis, the six-degree-of-freedom model based on "Beaver DHC-2" is established according to aircraft kinematics, aerodynamics and flight control theory in etc., and then the study of of the simulation analysis and intelligent control algorithm is completed by means of above model.Another important content of the thesis is the simulation research of the automatic landing of UAV. It includes as follow: (1) the track layout of automatic landing of UAV by referencing the approach and landing process under Instrument Landing System(ILS); (2) The design of control laws of altitude adjusting, head adjusting, glide slope and flare control.This thesis investigates the fuzzy adaptive PID controller and the integrated control combining cerebella model articulation controller with PID algorithm applying to UAV heading hold mode and altitude hold mode separately. By the comparison of computed results we can conclude that the presented method is better than the conventional PID control. Simulation results are helpful in practical engineering to UAV research on theoptimizing automatic landing in the wind.The thesis is useful for flight simulation and automatic landing research of UAV.