Tailless Aircraft Control Law Design And Control The Allocation Of Technology Research

The design of modern UAV involving aerodynamic configuration and control system becomes more and more complicated task to improve the performance of manoeuvrability and reliability. The advanced aerodynamic configuration tailless UAV with multi-effectors is an important character for next generation UAV.This thesis is finished by focusing on the Simulink model in the simulation platform of Matlab/Simulink aiming at one tailless UAV with the advanced aerodynamic configuration of multi-effectors. Including modeling of the nature tailless UAV, trimming and linearizing the nature tailless UAV, the analysis of the stability of the tailless UAV, the design of control scheme and control law, the application and research of control allocation.1. Nonlinear equations with six degrees of freedom including kinematics equations and dynamics equations was established according to the data of the cruise status, and modeling of the engine and helm for a certain UAV;2. Trim and linearize the nature tailless UAV using two methods. One is based on the simulink model, using the trim and linearize function which are provided in the simulation platform of Matlab/Simulink. The other is to trim and linearize the nature tailless UAV based on calculating the big-small derivatives. Simultaneously the stability of the nature tailless UAV is studied in detail;3. Based on the analysis of the stability of the nature tailless UAV, The control system of the tailless UAV is designed by using the classical control method and a time-based method is used that can tune up control law parameters automatically by virtue of optimizing. The simulation results show that the design results of the control law satisfy the time-requirement and frequency-requirement.4. The problem of control allocation is studied according to using multi-effectors in modern UAV. This thesis focuses on the application and research of control allocation methods to the longitudinal control system of the UAV. By the nonlinear simulation under the assumption that all control surfaces are well or some control surfaces fail, shows that using control allocation method is satisfactory in four respects: (1) the simplification of the parameters of the control law, (2) the optimization of control...