The Long Life Dc Motor factory tells you the speed control method of DC motor governor
Control method of speed of DC motor governor:
The MCS-51 series microcontroller is used to control PWM signal to control the speed of DC motor governor. It's something we 've been trying to study for a long time. The effect of single chip is becoming more and more obvious.
PWM waves can be generated by programming a single chip with PWM output, or they can be implemented using PWM dedicated chips. When the frequency of the PWM wave is too high, it requires too much power tube driven by the DC motor governor. When its frequency is too low, the electromagnetic noise generated is relatively large. In practical applications, when the PWM wave frequency is about 18KHz, It works best.
The hardware circuit is designed according to the circuit principle. The measuring device can measure the speed range of DC motor governor. Through each rotation of the motor, the speed measurement circuit of the infrared pair tube will be accumulated, and finally the specific size of the different speed levels can be known by passing the different values within 1S time. The number of turns turned in a fixed time is different, and the space occupancy ratio is different. The size of the obtained infrared pair speed measuring circuit is different. Finally, the specific value of the speed can be displayed in digital Guanshang through software programming.
The use of photoelectric sensors for DC motor governor speed measurement is the most ideal method, but resources are limited, so we need to continue to innovate and improve this technology.
