Positioning control method, device and system based on frequency converter and storage medium

The invention discloses a positioning control method, device and system based on a frequency converter and a storage medium, and relates to the technical field of frequency conversion control, proximity switches are arranged at the two ends of a guide rail where a target device moves back and forth, and the method comprises the steps of obtaining a target frequency and a preset frequency; controlling the frequency converter to drive the target device to move at the target frequency to obtain the running distance of the target device in real time; judging whether a deceleration triggering condition is met or not according to the running distance; if yes, controlling a frequency converter to drive a target device to move at a preset frequency; when the target device touches the proximity switch, the frequency converter is controlled to stop outputting frequency, so that the target device stops moving. The problem that in the prior art, field operation is complex, and consequently the complexity and cost of a po