A mixed analog-digital fuzzy logic inference processor chip, designed in a 0.35-μmCMOS technology, is presented. The analog fuzzy engine is based on a novel current-mode CMOS circuit used for the implementation of fuzzy partition membership functions. The architecture consists of a 3 inputs-1 output analog fuzzy engine, internal digital registers to store the parameters of the fuzzy controller, and a digital subsystem that allows the programmability of the fuzzy controller via an I2C interface. The architecture, circuits, and some Cadence Spectre simulations are presented.
A mixed signal fuzzy controller using current mode circuits / Orcioni, Simone; Biagetti, Giorgio; Conti, Massimo. - In: ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING. - ISSN 0925-1030. - STAMPA. - 38:2-3(2004), pp. 215-231. [10.1023/B:ALOG.0000011169.98696.87]