DC MOTOR WITH PWM SPEED CONTROL IN ALL FOUR QUADRANTS USING MICROCONTROLLER

In this paper, a four-quadrant speed system for DC motors has been designed, constructed, and tested. the foremost advantage of employing a DC motor is that the Speed-Torque relationship is varied to almost any useful form. to appreciate the speed control, an electronic technique called Pulse Width Modulation is employed which generates High and Low pulses. These pulses vary the speed within the motor. For the generation of those pulses, a microcontroller is employed. As a microcontroller is employed setting the speed ranges as per the need is straightforward which is completed by changing the duty cycles period of its slow within the program. Different speed grades and directions rely upon different buttons. Experiments have proved that this method is of upper performance.