Design of longitudinal controller for miniature unmanned air vehicle based on L_1 adaptive

According to the uncertainty of the Miniature Unmanned Air Vehicle(MUAV) model and the disadvantage of poor transient performance of the traditional Model Reference Adaptive Control method,a new method called L1Adaptive Control is used to design the longitudinal pitch controller of the MUAV.Firstly,the basic mathematics theory of the L1Adaptive Control is introduced and its theory is applied to the common uncertain system;then apply it to design the longitudinal pitch controller of the MUAV that has some uncertain factors;the simulation results show that the designed controller can guarantee the asymptotic convergence of tracking errors and also can guarantee the transient performance.