Fuzzy Controller Designing Based on @-Composite Operator

At present, almost all kinds of fuzzy controllers are designed by using ⊙-composite operator. Particularly, people have already used ⊙-composite operator to design the industrial Boiler Drum Water Level Fuzzy Controller, and we call this designed scheme as Scheme 1 in this article. Here, @-composite operator is used to design the industrial Boiler Drum Water Level Fuzzy Controller and three new schemes are obtained, as Scheme 2, Scheme 3 and Scheme 4. Moreover, the four schemes are all implemented by using Matlab in this article. According to the experimental result analysis, Scheme 2 provides the best control effect, and this shows that @-composite operator is more appropriate for designing fuzzy controllers.