Co-simulation and rapid prototyping of fuzzy supervised PID controllers based on FPGA-Nexys2 board

In this paper, a new CAD methodology for the Processor-In-the-Loop (PIL) co-simulation and rapid prototyping of fuzzy supervised PID controllers is proposed and successfully implemented using the FPGA-based SPARTAN-3E board and a host PC. The developed software (SW) and hardware (HW) co-design platform is based on the Xilinx System Generator (XSG) interface of MATLAB/Simulink and the Xfuzzy/Xfvhdl tool. The designed fuzzy supervised PID controller, described by its generated VHDL description under Xfvhdl workflow of Xfuzzy software, is implemented as a MATLAB/XSG model. This hardware model will be deployed on the FPGA-based Nexys2 target within a PIL co-simulation framework. The proposed FPGA-based CAD fuzzy supervision approach is applied to a DC motor speed control. All obtained SW/HW co-simulation results are compared and discussed in order to improve the effectiveness of the proposed fuzzy co-design methodology.