principle
The tachometer will read the received digital pulse signal (sent by the sensor) directly into the counting port of the cpu after processing, calculate the speed and the corresponding position of the pointer through the software, and then through the control port of the cpu, drive the stepping motor after amplification Rotate in positive and negative directions, indicating the corresponding speed value (the pointer is directly mounted on the rotating shaft of the stepper motor), and the stepper motor takes only 1/3 of a step.
use
is often used in the manufacturing of motors, electric fans, paper, plastics, chemical fibers, washing machines, automobiles, airplanes, ships, etc. Most commonly used is a handheld centrifugal tachometer. Tachometer measurement is indispensable in all areas of the national economy.
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