Adaptive Fuzzy Output Feedback Fault-Tolerant Compensation for Uncertain Nonlinear Systems With Infinite Number of Time-Varying Actuator Failures and Full-State Constraints

This paper focuses on the observer-based fuzzy adaptive fault-tolerant tracking control problem for uncertain nonlinear systems subject to unmeasured states and unmatched external disturbances. By designing a high gain state observer and a disturbance observer, unmeasured states and unmatched extern...

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Veröffentlicht in:IEEE transactions on cybernetics Jg. 51; H. 2; S. 568 - 578
Hauptverfasser: Jing, Yan-Hui, Yang, Guang-Hong
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States IEEE 01.02.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Actuators
Adaptive control
Adaptive systems
Backstepping
Disturbance observers
Fault tolerance
Fault tolerant systems
fault-tolerant control (FTC)
full-state constraints
fuzzy adaptive
Fuzzy control
Fuzzy logic
High gain
high gain observer
Liapunov functions
Nonlinear control
Nonlinear systems
Output feedback
State observers
Tracking control
Tracking errors
ISSN:2168-2267, 2168-2275, 2168-2275
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Zusammenfassung:This paper focuses on the observer-based fuzzy adaptive fault-tolerant tracking control problem for uncertain nonlinear systems subject to unmeasured states and unmatched external disturbances. By designing a high gain state observer and a disturbance observer, unmeasured states and unmatched external disturbances are estimated and robust tracking performance is improved. Moreover, the barrier-type functions are introduced to the backstepping design procedure to address the problem that all states do not violate their constraint bounds. Finally, a novel fault-tolerant control scheme for output feedback is proposed by combining with the projection technique. By designing appropriate Lyapunov functions, it is concluded that all signals of the plant are bounded and the desired tracking error can be regulated to a small neighborhood around the origin. The simulation results show the effectiveness of the designed control scheme.
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ISSN:2168-2267
2168-2275
2168-2275
DOI:10.1109/TCYB.2019.2904768