Analog gates for a VLSI fuzzy processor

In this paper we present proposals of some basic synchronous fuzzy circuits which are of help in the design of fuzzy processors. Our proposal is a compromise between a digital and an analog solution. We discretize the degrees of membership and make each elementary operator regenerate the valid levels We thus obtain circuits which virtually make no mistakes, regardless of the number of cascading stages and retroactions. So these circuits exhibit high noise immunity. This means that these "fuzzy-gates" are robust. As the fuzzy-gates proposed use a CMOS technology similar to that of the digital approach, they share the performance of the latter as far as dissipated power is concerned.