CMOS implementation of a current-mode fully programmable interval type-2 fuzzifier
Alireza Mesri, Mahmoud Mahdipour, Abdollah Khoei, Khayrollah Hadidi · Journal of Intelligent & Fuzzy Systems · 2015
Abstract In this article, a new current-mode, accurate, and fully programmable Interval Type-2 (IT2) membership function generator (MFG) in 0.18 μ m CMOS technology is presented. This IT2 fuzzifier is based on a Type-1(T1) fuzzifier that uses a new method for slope tuning. The proposed slope tuning method, leads to smaller active area and also significantly smaller total die area by reducing the number of required pins in comparison with previous methods. Small area, low power consumption, and especially suitable programming method, makes the proposed IT2 MFG suitable for fuzzifier block of general-purpose Fuzzy Logic Controllers (FLCs). The proposed IT2 MFG has an average power consumption of 570 μ W and has an area of 0.0183 mm 2 . Simulation results using HSPICE in a typical 0.18 μ m CMOS technology are presented to analyze the behavior of designed circuits.