PID Control of DC-Motors

Abstract

The objective of this project is to design a discrete PID controller for DC-Motors by using embedded systems techniques. To design a discrete PID controller a microcontroller "ATMEGA 32A" was used accompanied with an electronic circuit. The design tries to achieve technical objectives like small settling time value . A performance evaluation study was done using the "ISIS Professional" simulator and "MATLAB" for the designed discrete PID controller. The discrete PIDcontroller during this study successfully maintained the DC-motor speed at a constant value on the event of mechanical-load changes . The discrete PID controller also correctly responded to the speed changes requests. The discrete PID controller also showed small settling time when controlling medium size DC-motors and it is anticipated to have smaller settling time when controlling small size DC-motors.