A novel mixed-signal digital voltage mode CMOS fuzzy logic controller in 0.18μm technology

What is presented in this article is a general purpose fuzzy controller. In comparison with other structures, a novel approach is used in the fuzzifier section that brings about accuracy and speed enhancement. A new Min-Max circuit with the capability of generating minimum, maximum and both of mentioned results (utilizing a decoder) is exploited in inference engine. The defuzzifier is designed in a simple manner according to the center of area (COA) method and it acts like a variable resistor. A controller of two inputs, nine rules and one output simulated with Hspice software with level 49 parameters. The inference speed of the controller is about 18.4 MFLIPS. The controller has two inputs, nine rules and one output.