Field programmable gate array (FPGA) based fuzzy logic controller for boost converter

Abstract

This project presents the application of the Single Input Fuzzy Logic Controllers (SIFLC) to regulate the output voltage of a Boost (step-up) DC to DC power converter. The SIFLC is derived from the Signed Distance Method which reduces the multi-input Fuzzy Logic Controller (FLC) with Toeplitz rule table structure to a sinngle input FLC. Effectively, it allows for the rule table to be approximated to a one dimensional piecewise liner control surface. To validate the effectiveness of the SIFLC compared to the Conventional FLC, simulation and experimental works are carried out. The results show that the Boost converter performance is exactly identical when subjected to both controllers. However SIFLC requires nearly an order of magnitudeless time to execute its algorithm.