Design representation of the multipurpose Fuzzy Logic controller using hardware description language

Abstract

A large numbers of fuzzy control applications with the physical systems require a real-time operation to interface high speed constraints; higher density programmable logic devices such as field programmable gate array (FPGA) can be used to integrate large amounts of logic in a single IC. This paper presents a design representation of the multipurpose fuzzy logic controller using hardware description language, in order to make a comparison between other designs in the physical systems. The controller is (Proportional – integral – derivative Fuzzy Logic controller (PIDFLC)), with programmable fuzzy sets and programmable rule table using VHDL language. The method used to design the fuzzy logic controller is to design it with the aid of conventional PID control to serve wide range of the physical systems efficiently. The design representation is presented using RTL viewer in the ALTERA Quartus II program. Timing test results for the proposed controller was very fast ranging from 20.8 nano second, and the controller has the ability to serve a wide range of the systems.