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Vol. 114, Issue 3, March 2010, pp. 170-183




Implementation of FPGA based PID Controller for DC Motor Speed Control System


*Savita SONOLI ,** Nagabhushan Raju KONDURU

*Professor and Head Department of Instrumentation Technology

Proudhadevaraya Institute of Technology, Hospet-583225, Karnataka, India

Tel.: 91-9343553487

**Associate Professor and Head, Department of Instrumentation

Sri Krishnadevaraya University, Anantapur-515 003, Andhra Pradesh, India

Tel.: 91-9866590987

E-mail: savitachitriki@gmail.com, knrbhushan@yahoo.com



Received: 9 February 2010   /Accepted: 22 March 2010   /Published: 29 March 2010


Abstract: In this paper, the implementation of software module using VHDL for Xilinx FPGA (XC3S400) based PID controller for DC motor speed control system is presented. The tools used for building and testing the software modules are Xilinx ISE 9.2i and ModelSim XE III 6.3c. Before verifying the design on FPGA the complete design is simulated using Modelsim Simulation tool. A test bench is written where the set speed can be changed for the motor. It is observed that the motor speed gradually changes to the set speed and locks to the set speed.


Keywords: Field programmable gate array (FPGA), Proportional-integral-derivative (PID) controller, Very high speed integrated circuit hardware description language (VHDL), Pulse width modulation (PWM)


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