Minimum about fuzzy logic
Dilute output terms

The shape of transfer characteristic (especially steepness in middle part) is possible to influence by change in distribution of input or output terms. In efficient examples is possible to manipulate along with input terms. But purposeful is just thickening input terms along with dilution output terms by which increase steepness of transfer characteristic in the middle or on the contrary dilution output terms along with thickening output terms in the middle of range in which are lessen steepness of transfer characteristic in the middle part. Compressing or dilution terms in the middle part of range at the same time are senseless, because effects with one another are cancelling by manipulation.

Fig. 6.25: Diluted output terms in the middle
Fig. 6.26: Convert characteristic of one-dimensional system