Description

“PID” is an acronym for Proportional Integral Derivative. As the name suggests, these terms describe three basic mathematical functions applied to the error (error = SetVal - SensorVal, where SetVal is the target value and SensorVal is the present input value obtained from the sensor ). Main task of the PID controller is to minimize the error of whatever we are controlling. It takes in input, calculates the deviation from the intended behavior and accordingly adjusts the output so that deviation from the intended behavior is minimized and greater accuracy obtained. P-Proportional ,I-Integral ,D-Derivative. And here we are going use qtr8rc polulu sensor .this sensor contains 8 ir proximate sensors .this is the best sensor to make a PID controller robot .the qtr8rc sensor cost around 1500 rupees