Adaptive nonlinear control without overparametrization
Systems & Control Letters
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Systems & Control Letters
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Systems & Control Letters
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Systems & Control Letters
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Systems & Control Letters
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Automatica (Journal of IFAC)
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Automatica (Journal of IFAC)
Analysis and design for a class of complex control systems part II: fuzzy controller design
Automatica (Journal of IFAC)
Nonlinear and Adaptive Control Design
Nonlinear and Adaptive Control Design
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SIAM Journal on Control and Optimization
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Information Sciences—Informatics and Computer Science: An International Journal - Special issue: Intelligent information systems and applications
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IEEE Transactions on Fuzzy Systems
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Automatica (Journal of IFAC)
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Information Sciences: an International Journal
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Information Sciences: an International Journal
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Information Sciences: an International Journal
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Fuzzy Sets and Systems
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Information Sciences: an International Journal
Information Sciences: an International Journal
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IEEE Transactions on Fuzzy Systems
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IEEE Transactions on Fuzzy Systems
Information Sciences: an International Journal
Information Sciences: an International Journal
Fuzzy-approximation-based adaptive control of strict- feedback nonlinear systems with time delays
IEEE Transactions on Fuzzy Systems
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Information Sciences: an International Journal
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International Journal of Applied Mathematics and Computer Science
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Information Sciences: an International Journal
Design of a unified adaptive fuzzy observer for uncertain nonlinear systems
Information Sciences: an International Journal
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This paper presents a novel robust adaptive fuzzy tracking controller (RAFTC) for a wide class of perturbed strict-feedback nonlinear systems with both unknown system and virtual control gain nonlinearities. For unknown system nonlinearities, two types for them are included: one naturally satisfies the "triangularity condition" and may possess a class of unstructured uncertain functions which are not linearly parameterized, while the other is partially known and consists of parametric uncertainties and known "bounding functions". The Takagi-Sugeno type fuzzy logic systems are used to approximate unknown system nonlinearities and a systematic design procedure is developed for synthesis of RAFTC by combining the backstepping technique and generalized small-gain approach. The algorithm proposed is highlighted by three advantages: (i) the semi-global uniform ultimate bound of RAFTC in the presence of perturbed uncertainties and unknown virtual control gain nonlinearities can be guaranteed, (ii) the adaptive mechanism with minimal learning parameterizations is obtained and (iii) the possible controller singularity problem in some of the existing adaptive control schemes with feedback linearization techniques can be removed. Performance and limitations of proposed method are discussed and illustrated with simulation results.