| UAV has a lot of advantages such as easy production, low cost, simple operation and so on. So since UAV was born, it has showed huge advantages gradually in the investigation areas, monitoring areas, agriculture areas. In recent years, with the development of microelectronics technology, there are great developments in UAV control technology.Firstly, the basic principle and components of UAV flight control system are analyzed.Six-dof mathematical model is established by comparing with manned aircraft. According to inherent physical characteristics of the UAV and UAV parameters that are obtained by AVL software and using Vortex lattice method, vertical and linear mathematical are established at last. Secondly, longitudinal and transverse lateral fight control law is designed by the method of LQG with simplex and do the simulation. Thirdly, in order to simulate and analyze,designed control law is substituted into the control system. Then we can verify the control performance by analyzing the results of simulation. Finally, hardware platform based on STM32 is designed according to the structure of UAV flight control system. PC is designed by using LabVIEW after applying control law into the designed platform. So control system can be verified. |
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