OBSERVER-BASED ADAPTIVE FUZZY CONTROL SCHEME FOR A CLASS OF MIMO UNCERTAIN NONLINEAR SYSTEMS

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SHAHNAZI REZA; PARIZ NASER; VAHIDIAN KAMYAD ALI

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Journal: Journal of Control Year:2010 | Volume:3 | Issue:4 Page(s): 65-75

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Title

OBSERVER-BASED ADAPTIVE FUZZY CONTROL SCHEME FOR A CLASS OF MIMO UNCERTAIN NONLINEAR SYSTEMS

Author(s)

SHAHNAZI REZA | PARIZ NASER | VAHIDIAN KAMYAD ALI | Issue Writer Certificate

Keywords

NONLINEAR CONTROLQ2

FUZZY APPROXIMATORQ3

ADAPTIVE CONTROLQ2

UNCERTAINTYQ1

EXTERNAL DISTURBANCESQ3

Abstract

An output feedback adaptive fuzzy model following controller is proposed for a class of MIMO nonlinear uncertain systems. The unknown nonlinear functions are approximated by fuzzy systems based on universal approximation theorem, where both the premise and the consequent parts of the fuzzy rules are tuned with adaptive schemes. Thus prior knowledge and the number of fuzzy rules for designing fuzzy systems are decreased effectively. In practical situations the states of the nonlinear systems are fully or partially not known, the proposed approach does not need the availability of the states and uses an observer to estimate the states. To cope with fuzzy approximation error and EXTERNAL DISTURBANCES an adaptive discontinuous structure is used to make the controller more robust, while due to adaptive mechanism attenuates chattering effectively. All the adaptive gains are derived via Lyapunov approach thus asymptotic stability of the closed-loop system is guaranteed. The approach is applied to stabilize the Chen's chaotic system with uncertain dynamics and amid significant disturbances. Analysis of simulations reveals the effectiveness of the proposed method in terms of coping well with the uncertainties while maintaining asymptotic convergence.

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APA: Copy

SHAHNAZI, REZA, PARIZ, NASER, & VAHIDIAN KAMYAD, ALI. (2010). OBSERVER-BASED ADAPTIVE FUZZY CONTROL SCHEME FOR A CLASS OF MIMO UNCERTAIN NONLINEAR SYSTEMS. JOURNAL OF CONTROL, 3(4), 65-75. SID. https://sid.ir/paper/120891/en

Vancouver: Copy

SHAHNAZI REZA, PARIZ NASER, VAHIDIAN KAMYAD ALI. OBSERVER-BASED ADAPTIVE FUZZY CONTROL SCHEME FOR A CLASS OF MIMO UNCERTAIN NONLINEAR SYSTEMS. JOURNAL OF CONTROL[Internet]. 2010;3(4):65-75. Available from: https://sid.ir/paper/120891/en

IEEE: Copy

REZA SHAHNAZI, NASER PARIZ, and ALI VAHIDIAN KAMYAD, “OBSERVER-BASED ADAPTIVE FUZZY CONTROL SCHEME FOR A CLASS OF MIMO UNCERTAIN NONLINEAR SYSTEMS,” JOURNAL OF CONTROL, vol. 3, no. 4, pp. 65–75, 2010, [Online]. Available: https://sid.ir/paper/120891/en

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