Design And Implementation Of Fuzzy Controller Based On FPGA

Fuzzy control is the important part of the intelligent control and it can control the object which can not be described with accurate maths model effectually . In recent years, FPGA and EDA technology are developed very fast. This thesis has used the two advanced technologies. It has implemented a dual-input and single-output fuzzy controller on a chip of FPGA and integrated ADC and DAC ,thus, the system design is simplified.Firstly, expounding the theoretical basis of fuzzy control and the dual-input and single-output fuzzy control algorithm is introduced with emphasis; Then, on the base of simple introduction of the FPGA and HDL, by top-bottom design method, designing each module of fuzzy controller by main EDA tools and simulating each module. At last, link each modules into an integrated fuzzy logic controller and simulate it and download the program into the FPGA chip, and then a experiment of temperature control validate the function of fuzzy control which can be suit for general use.This paper is a try of digital system design technology based on VHDL and FPGA in intelligent control. It extends the implementation method of fuzzy controller. Compared with the fuzy controller based on singlechip, it enhance the simplity,real-time and economy of system. So it is a worthy technique.Because of the simplification of algorithm, it loses some precision. In the future, we can perfect the algorithm and design the fuzzy controller with high precision.