Design of a current-mode fully programmable Interval Type-2 fuzzifier for general-purpose applications

This paper presents a new current-mode accurate and fully programmable Interval Type-2 (IT2) membership function generator (MFG) in 0.18-μm CMOS technology. This IT2 MFG is based on a Type-1(T1) MFG 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 800μW and occupies 0.0032mm². Simulation results using HSPICE for TSMC 0.18μm CMOS technology are presented to analyze the behavior of designed circuits.