A Novel VLSI Architecture of a Weighted Average Method based Defuzzifier Unit

Abstract—In fuzzy control systems, fuzzification and defuzzification are two important procedures. Defuzzification plays an important part in the implementation of a fuzzy system, since the fuzzy data is not suitable for real time applications; it needs to be converted into crisp data. This paper proposes a novel VLSI architecture of a weighted average method (WAM) defuzzification method. The WAM of defuzzification is simple and is being generally used in comparison to more complex centre of gravity defuzzification method. The proposed architecture is modeled in very high speed hardware description language (VHDL) and implemented in Vertex-4 field programmable gate array (FPGA). The functional analysis has revealed that the proposed architecture is implementing WAM