A digital anti-out-of-step stepping motor speed controller and control method

Abstract

The invention discloses a digital anti-out-of-step stepping motor speed controller and a control method, wherein the controller includes: a high-frequency oscillator, a frequency divider, a reversible counter, a digital comparator, a dial switch, a control Gate and low-frequency oscillator; the high-frequency oscillator is connected to the frequency divider, the output terminal of the reversible counter is connected to the preset terminal of the frequency divider, and the output terminal of the reversible counter is also connected to the frequency divider One set of input ends of the comparator is connected, another set of input ends of the comparator is connected with the dial switch, the output of the comparator is connected with the control gate, and the output of the control gate is connected with the reversible The counter is connected, and the input of the control gate is connected with the low frequency oscillator. The controller overcomes the problems in the prior art that the stepping motor is out of step in the process of frequent start-stop and sudden change in frequency, resulting in abnormal operation and even locked-rotor phenomenon.

Description

technical field [0001] The invention relates to the technical field of stepping motor speed controllers, in particular to a digital out-of-step preventing stepping motor speed controller and a control method. Background technique [0002] A stepper motor is an actuator that converts a pulse signal into an angular displacement. The speed of the motor is proportional to the pulse frequency, and the speed of the motor can be adjusted by changing the pulse frequency. [0003] However, the existing stepping motors often suffer from out-of-step phenomenon, which causes the stepping motors to fail to operate normally. The main reason for this phenomenon is that the actual torque-frequency characteristic of the stepping motor is when the frequency of the driving pulse is low, the torque of the stepping motor is relatively large. The highest frequency has a limit value. When the stepper motor is running, if the speed is raised or lowered to a given value at one time, because the ac...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned technical problems, the purpose of the present invention is to overcome the stepper motor in the prior art in the process of frequent start-stop and frequency mutation, resulting in out-of-step, resulting in abnormal operation, and even stalling phenomenon, providing A digital anti-out-of-step stepping motor speed controller and control method

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