Robust fuzzy decentralized control for nonlinear interconnected descriptor systems

A fuzzy state model for nonlinear interconnected descriptor systems is presented by applying a T-S fuzzy descriptor model. Based on the model, a robust fuzzy decentralized controller design method is given. Then, a sufficient condition is obtained in terms of a LMI. In addition, a less conservative LMI design approach is employed to find a stable fuzzy decentralized feedback controller. The effectiveness and the design procedures of the controller presented are illustrated by an example.