Robust decentralized control for fuzzy large-scale systems using dynamic output-feedback

This paper presents a robust decentralized controller design problem for guaranteed cost stabilization of a class of fuzzy large-scale systems using dynamic output-feedback scheme. A Takagi-Sugeno fuzzy model is adopted for the large-scale system, which has norm-bounded uncertainties and unknown interconnection satisfying the quadratic inequality. Sufficient conditions are derived for both robust asymptotic stabilization and minimization of a given cost function and formulated in terms of linear matrix inequalities. Finally, a numerical example is provided to verify the effectiveness of the proposed technique.