A Methodology to Design FPGA-based PID Controllers

Lima, JoãoMenotti, RicardoCardoso, João M. P.Marques, Eduardo2012-05-122012-05-122006AUT: JLI00543;http://hdl.handle.net/10400.1/1153This paper presents a methodology to implement PID (Proportional, Integral, Derivative) controllers in FPGAs (Field-Programmable Gate Arrays) using fixed-point numerical representation. The Matlab/Simulink environment is used for modeling, simulation and evaluation the performance provided by different fixed-point representations using a given control process. A static bit-width analyzer is used to give a specialized fixed-point representation for each operand/operator in the controller system. After bit-width analysis, a VHDL represen-tation of the system is generated. Results show that the proposed methodology leads to shorten design cycles achieving important resource savings by employing specialized fixed-point repre-sentations.engPID (ProportionalFPGAs (Field-Programmable Gate Arrays)Bit-width analyzerDerivative) controllersIntegralA Methodology to Design FPGA-based PID Controllersjournal article