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This paper focuses on the fault tolerant control (FTC) approach using model reference adaptive control (MRAC). The fault in flight control system will lead to destructive accident. Firstly a new general post-fault system model of both additive and multiplicative actuator faults was presented. The new strange of MRAC will overcome the disadvantages of the previous ones, that is, the fault information...
Asymmetric structure damage such as loss of wing tip can cause unknown changes to the aircraft mass, center of gravity and aerodynamic characteristics, which will make the whole system becomes difficult to control. Aiming at this problem, this paper presents a robust fault-tolerant control strategy based on nonlinear extended state observer and gain preset PID (Proportion Integration Differentiation)...
Because of the high failure rate of the agricultural fixed-wing aircraft due to the terrible working environment, this paper mainly discusses applying robust fault-tolerant control algorithm and Reaction Control System (RCS) actuator to the flight control system when the multi-actuator aircraft is with actuator failures. Firstly, the self-repairing flight control system structure based on dynamic-inversion...
This paper focuses on the control problem of the aircraft with asymmetric structure damage. The contribution of this study is to present a new robust fault-tolerant control strategy based on nonlinear extended state observer and nonlinear dynamic inverse, which well balances the system performance and the tolerance of damage. Firstly, the dynamic model of the aircraft with asymmetric structure damage...
This paper studies the fault-tolerant time-varying formation control problems for second-order multi-agent systems with directed topologies. Both bias and loss of effectiveness fault modes are considered. Firstly, a totally distributed fault-tolerant formation control protocol is presented using the adaptive updating gain. The proposed protocol is independent of any global information about the interaction...
In order to meet the requirement of high reliability and fault tolerance of the aircraft, air data assisted INS/GPS fault-tolerant integrated navigation system design is proposed, to achieve optimal estimation of navigation position error, speed error and attitude error of the aircraft. The design is for the problems that inertial and integrated GPS navigation systems has poor adaptability and is...
A robust fault-tolerant controller integrating fault detection and compensation for flight control surfaces failures is discussed, a method is proposed using the extended state observer compensating the faults. The complete system comprises of two controllers. The main controller is designed for high performance of the original faultless system. The compensating controller is based on a nonlinear...
A new scheme of incorporating the fault tolerance and disturbance rejection in an existing flight control system is proposed. Method to design a standalone compensator is suggested which is added to the original system in order to guarantee the system stability and performance in the presence of fault or disturbances. Thus the controller, which is designed separately considering all the design parameters...
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