Observer based robust H _∞ fuzzy tracking control: application to an activated sludge process.

ABSTRACT: The design of an observer-based robust tracking controller is investigated and successfully applied to control an Activated Sludge Process (ASP) in this study. To this end, the Takagi-Sugeno (TS) fuzzy modeling is used to describe the dynamics of a nonlinear system with disturbance. Since the states of the system are not fully available, a fuzzy observer is designed. Based on the observed states and a reference state model, a reduced fuzzy controller for trajectory tracking purposes is then proposed. While the controller and the observer are developed, the design goal is to achieve the convergence and a guaranteed H _∞ performance. By using Lyapunov and H _∞ theories, sufficient conditions for synthesis of a fuzzy observer and a fuzzy controller for TS fuz

SUBMITTER: Khallouq A 

PROVIDER: S-EPMC8053019 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature