Simulation principle of DC motor speed regulation and speed measurement based on 5 1 single chip microcomputer

The simulation principle of DC motor speed regulation and speed measurement based on 5 1 single chip microcomputer is that STC90C52RC single chip microcomputer is used as the main control chip, and the principle of PWM is used to adjust the speed of DC motor through buttons to realize forward and reverse rotation; Hall sensor is used to count the number of revolutions of DC motor, and the collected count value is converted into the current speed value of DC motor through the main control chip; The calculated value is displayed in real time by LCD 1602 display module.