Interval Type-2 Fuzzy Logic Controllers
In the point of view of control types, the fuzzy logic control technology can be divided into two categories: type-1 and type-2. So far, the fuzzy logic control technologies discussed in all previous chapters in this book belong to the type-1 fuzzy logic controls. In type-1 FLC, each membership function has a definite value or a membership degree based on the current input or output value. Also, the control rules have a two-to-one, multi-to-one, or multi-to-multi definite single-value relationship, and the fuzzy inference system output is a crisp single-value output. However, some shortcomings are involved with this kind of fuzzy inference system.
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