کنفرانس مهندسی برق ایران

صفحه اصلی / سی امین کنفرانس بین المللی مهندسی برق

H_∞ Robust Constrained Control of Fuzzy-based Continuous-Time Nonlinear Systems

نویسندگان :

Mohsen Farbood¹ Mokhtar Shasadeghi² Taher Niknam³ Behrouz Safarinejadian⁴

1- دانشگاه صنعتی شیراز 2- دانشگاه صنعتی شیراز 3- دانشگاه صنعتی شیراز 4- دانشگاه صنعتی شیراز

کلمات کلیدی :

H_∞ robust control،T-S fuzzy model،constrained fuzzy control،parameter uncertainties،external disturbance.

چکیده :

This article presents an H_∞-based fuzzy constrained control of continuous-time nonlinear systems affected by uncertainties and disturbances. To achieve constrained performance, the fuzzy model of the nonlinear actuator saturation is used. That is, without the online computation or the limitation on the initial condition of the system states, the physical limitations of the control amplitude are considered in the design process. Moreover, the uniformly ultimate bounded (UUB) stability of the fuzzy-based nonlinear system is ensured due to the Lyapunov theory. More precisely, a new one-step offline LMI problem is provided to guarantee the closed-loop stability and to reach robust and constrained performance. A mass-spring-damper is employed to show the superiority of the proposed robust controller.

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