Single chip technology in DC motor speed control system of application
Abstract: DC motor is made put coil in magnetic field under the action of produce a electromagnetic force, electromagnetic force produced a role in the armature torque, namely electromagnetic torque motor rotation, making. Motor rotation speed and motor applied voltage is proportional to the ends, the output torque is proportional to its current on-and-off broken rate corresponding to the required speed. According to the topic request, the system can be divided into the control part and speed detection parts. The system USES AT89S52 SCM as core controller, through infrared to tube composed of homemade sensors to motor speed measuring, microcontroller sampling, through the PID control algorithm produces PWM (pulse width modulation) control motor driver circuit driver for dc complete dc motor speed control of steering and. Then by eight digital tube to display the single-chip microcomputer control with measurement results.
Key word: AT89S52 DC motor PID PWM motor driver circuit
