Programming a Computer and a Microcontrollerudto Control the Speed and Direction of DC Motors

摘要

Direct current (DC) motor has already become an important machine used in many applications across a wide range ofudpowers and speeds. The ease of control and excellent performance of the DC motors will ensure that their applications will continue toudgrow in the future. This work is mainly concerned with DC motor speed, direction and active state (either start or stop) control by usingudmicrocontroller PIC18F452 via Pulse Width Modulation (PWM) technique, where its signal is generated in microcontroller. The PWMudsignal will request the motor driver to vary the voltage supply across the motor to maintain its speed. A program written in Visual Basicud6.0 is developed to provide a graphic user interface (GUI) to enable the control of the DC motor from a computer.