| Title |
Design of Optimized Interval Type-2 Fuzzy Controller and Its Application |
| Authors |
장한종(Jang, Han-Jong) ; 오성권(Oh, Sung-Kwun) |
| Keywords |
Type-1 Fuzzy Cascade Controller ; Type-2 Fuzzy Cascade Controller ; Genetic Algorithm ; Ball & Beam System |
| Abstract |
In this study, we introduce the design methodology of an optimized Interval Type-2 fuzzy controller. The fixed MF design of type-1 based FLC leads to the difficulty of rule-based control design for representing the linguistically uncertain expression. In the Type-2 FLC as the expanded type of Type-1 FLC, we can effectively improve the control characteristic by using the footprint of uncertainty(FOU) of membership function. Type-2 FLC has a robust characteristic in the unknown system with unspecific noise when compared with Type-1 FLC. Through computer simulation as well as practical experiment, we compare their performance by applying both the optimized Type-1 and Type-2 fuzzy cascade controllers to ball and beam system. To evaluate each controller performance, we consider controller characteristic parameters such as maximum overshoot, delay time, rise time, settling time and steady-state error. |