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Paper details
Number 3 - September 2025
Volume 35 - 2025
Fault detection based on interval observers and dynamic event-triggered fault-tolerant control for morphing aircraft
Xingjian Fu, Xiaohan Wang
Abstract
In this paper, a fault detection mechanism using interval observers and a robust fault-tolerant control strategy with dynamic
event-triggered mechanism are designed for the switched control problem during the transformation process of a morphing
aircraft. Firstly, an interval observer design method for the nonlinear switched system is given. It is converted by coordinate
transformation into the form of solving Sylvester’s equation in the absence of actuator faults. Secondly, by using the
output of the interval observer, the upper and lower bounds of the system output under the no actuator faults condition
are constructed, and the design of the fault detection mechanism is achieved by monitoring whether the system output
exceeds the bounds. Thirdly, in order to save communication resources, a robust fault-tolerant control strategy based on
dynamic event-triggered mechanism is designed. Based on fault detection results, two different controllers are utilized for
switched control, ensuring the boundedness of the closed-loop system signal, and conditions for the asymptotic stability of
the closed-loop system are offered. Finally, a nonlinear model of morphing aircraft system with variable wing curvature is
used to verify the validity of the designed scheme.
Keywords
morphing aircraft, interval observer, fault detection, dynamic event-triggered, robust fault-tolerant control, switched system