Fault-Tolerant Control for Wing Flutter Under Actuator Faults and Time Delay
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Investigating the design of the controller stabilizing the wing flutter system, which is robust against actuator faults, actuator saturation, time delay, parameter uncertainties and external disturbances.
The model of the wing flutter system that considered the effects of actuator faults and saturation, time delay, parameter uncertainties and external disturbances is constructed by the Lagrange method. Then the finite-time fault-tolerant controller is derived, the stability of which is proved by the Lyapunov function.
The simulation results elucidate that, the proposed fault-tolerant controller can handle the actuator faults effectively, meanwhile the wing flutter of the reentry vehicle can be suppressed instantly. The robustness of the actuator against actuator saturation, time delay, parameter uncertainties and external disturbances is also demonstrated.
KeywordsActive flutter suppression Fault-tolerant control Time delay Actuator fault Observer Actuator saturation
This work was supported by the Natural Science Foundation of China [Grant number 11772187, 11802174], the China Postdoctoral Science Foundation [Grant number 2018M632104], and Shanghai Institute of Technical Physics of the Chinese Academy of Science [Grant number CASIR201702].
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