Journal
IEEE TRANSACTIONS ON FUZZY SYSTEMS
Volume 25, Issue 3, Pages 642-652Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TFUZZ.2016.2567457
Keywords
Adaptive fuzzy control; backstepping design technique; input delay; output constraint
Funding
- National Natural Science Foundation of China [61573070, 61622302, 61673072, 61333012]
- Program for New Century Excellent Talents in University [NCET-13-0696]
- Natural Science Foundation of Liaoning Province [2015020049]
- Special Chinese National Postdoctoral Science Foundation [2015T80262]
- Chinese National Postdoctoral Science Foundation [2014M551111]
- Key Laboratory of Integrated Automation for the Process Industry, Northeast University
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This paper investigates the problem of adaptive fuzzy tracking control for nonlinear strict-feedback systems with input delay and output constraint. Input delay is handled based on the information of Pade approximation and output constraint problem is solved by barrier Lypaunov function. Some adaptive parameters of the controller need to be updated online through considering the norm of membership function vector instead of all sub-vectors. A novel adaptive fuzzy tracking control scheme is developed to guarantee all variables of the closed-loop systems are semiglobally uniformly ultimately bounded, and the tracking error can be adjusted around the origin with a small neighborhood. The stability of the closed-loop systems is proved and simulation results are given to demonstrate the effectiveness of the proposed control approach.
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