Wire feeder control method, controller and storage medium

Abstract

The embodiment of the invention discloses a wire feeder control method, a controller and a storage medium. The method comprises: a controller outputting a high-frequency driving signal at intervals, and the frequency of the high-frequency driving signal being larger than 20 KHz; the controller sampling back electromotive force of the motor during the period of not outputting the high-frequency driving signal; and the controller adjusting the high-frequency driving signal according to the back electromotive force. According to the embodiment of the invention, the high-frequency driving signal is output through the gap, the driving frequency of the motor is improved, and the motor is prevented from generating noise. The back electromotive force of the motor is collected within the interval time when the high-frequency driving signal is not output, and the interval time is adjustable, so that the turn-off peak time can be avoided, and a stable counter electromotive force signal is obtained. Meanwhile, the driving signal with higher frequency is adopted, so that the speed of adjusting the driving signal of the next period based on the driving signal of the previous period is more timely, namely, the updating speed of the driving signal of the motor is improved, and the dynamic response performance of the motor is improved.

Description

technical field [0001] The embodiments of the present invention relate to the field of welding power sources, and in particular to a wire feeder control method, a controller and a storage medium. Background technique [0002] With the popularization of digitalization of welding power supply, the performance of welding power supply has been greatly improved, and the requirements for wire feeder are getting higher and higher. The existing wire feeder back EMF feedback method to control the wire feeder uses the driving dead time to sample the back EMF. In order to obtain a stable and reliable back EMF voltage, the driving frequency of the wire feeder control power tube should not be too high. High, this brings two problems. On the one hand, the drive frequency is low, and the wire feeder will generate noise when it is working. On the other hand, the drive frequency is low, and the adjustment speed of the wire feeder will be slow, resulting in the dynamic response just slow. ...

AI Technical Summary

Problems solved by technology

The existing wire feeder back EMF feedback method to control the wire feeder uses the driving dead time to sample the back EMF. In order to obtain a stable and reliable back EMF voltage, the driving frequency of the wire feeder control power tube should not be too high. High, this brings two problems. On the one hand, the drive frequency is low, and the wire feeder will generate noise when it is working. On the other hand, the drive frequency is low, and the adjustment speed of the wire feeder will be slow, resulting in the dynamic response just slow

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