Controlador difuso parametrizable basado en un núcleo de procesamiento reconfigurable descrito en VHDL

Abstract

The article describes the design of a hardware fuzzy controller. These devices are usually builded for an specific plant difficulting its range of applicability. The presented development is based on a parametizable fuzzy processor, it allows being configurated for use in the control of vary plants without hardware variation. In this case is possible to modify, using Mamdani type rules, the partition of the discourse’s universe for each input variable from 1 to 5 fuzzy sets, with triangular or G-linear membership functions for the input variables and singleton type sets for the output, reducing the calculation complexity of the defuzzyfier. The development was implemented using VHDL and synthesized inside an ALTERA Cyclone Ep1c20f400c7 FPGA device. The proposed design has a capacity for 2 input and 1 output port, using a 10 bits resolution at each one (input and output). The paper shows the results and conclusions about design’s synthesis, as well as a comparison with a traditional PID controller.