A technique for deriving analytical structure of a general class of interval type-2 TS fuzzy controllers

Type-2 (T2) fuzzy controllers have been widely treated as black boxes in that their input-output mathematical relationships (i.e., analytical structures) are unknown. In contrast, any conventional controller´s analytical structure is always known. Revealing the analytical structure is important as it will lay a solid foundation for better understanding, more insightful analysis, and more effective design of T2 fuzzy control systems. In this paper, we developed a technique for deriving the analytical structure of a general class of interval T2 TS fuzzy controllers.