Abstract
This thesis mainly realize is the basis of the micro control dc motor system. In the modern electronic products, automatic control system, electronic equipment, home appliances, electronic toys, etc.), dc motors have been widely used. The overall design including paper PWN wave speed, two plan with thyristor speed. Units are mainly on module design H bridge driving circuit design, hardware circuit design, system speed, speed control design, design LED display five modules. System debugging is divided into software debugging, dc motor commissioning, motor speed measurement and display. From the start, overall design scheme for each project establishment module, then analyzes each module design, complete with software and hardware circuit diagram, after the commissioning, do a complete finally completed the dc motor speed control system.
Key words: Dc motor; Module design; PWM wave speed
