| The flight control system is one of the most important part of the aircraft,which directly affect-ts performance,safety and reliability of aircraft other.However,the flight control system is a very comp-lex controlsystem.With the development of science and technology,hunman's demands on the aircraft-t performance,safety and reliability have become more and more higher.At the same time it is also prone to happen various faults,such as sensor fault,actuator faults,system fault.If the fault occurs in the flight control system during the fight,it will bring a catastrophic accident.Therefore,the flight control system must have a certain ability to tolerate fault,making the flight control system fly normally in the event of fault to prevent disaster accident from occurring.The third chapter analyzes the possible fault type of flight control system,and the mathematical models of fault types are given.The fourth chapter is to design tracking optimal controller based onm LMI technique,which satisfies be-low two performance index:the closed-loop system is stable,flight control system output signal tracks th-e given reference signal,steady-state error is zero;liner quadratic optimal.The effectiveness of th-e controller's design will be verified through Matlab/Simulink simulation.The fifth chapter is to design fault-tolerant controller based on adaptive control technique,which satisfies below the performance index:in the event of actuator drift fault,the closed-loop control system is stable,flight control system output signal still tracks the given reference signal,the steady-state error is still zero,ensuring that the flight control system can automatically compensate fault effect on the flight control system and can still track the given reference input signal in the event of actuator drift fault.The effectiveness of the controller's design will be verified through Matlab/Simulink simulation.The sixth chapter summarizes the whole paper,and the further research work is introduced. |
PDF Full Text Request