Journal
IEEE TRANSACTIONS ON FUZZY SYSTEMS
Volume 26, Issue 4, Pages 2301-2310Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TFUZZ.2017.2772879
Keywords
Fault-tolerant control (FTC); fuzzy adaptive control; output feedback; sensor fault; tracking performance
Funding
- Funds of the National Natural Science Foundation of China [61621004, 61420106016]
- Research Fund of State Key Laboratory of Synthetical Automation for Process Industries [2013ZCX01]
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This paper investigates the adaptive fuzzy tracking control problem for a class of uncertain nonlinear strict-feedback systems under sensor faults and unmeasured states. To address the challenges incurred by the partial loss of effectiveness of sensors, a novel observer-based adaptive fault-tolerant controller is designed. Different from the existing state observer design methods, the new state observer contains an adaptive fault compensation mechanism. By employing a cubic absolute-value Lyapunov function, it is proved that the proposed fault-tolerant controller guarantees that all the signals in the closed-loop system are bounded and the tracking performance of the system can he guaranteed even if the sensor fault occurs. Simulation results verify the effectiveness of the proposed method.
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