Capacitance calibration effect evaluation method and system

Abstract

The embodiment of the invention belongs to the technical field of laser cutting control, and relates to a capacitance calibration effect evaluation method and system. According to the technical schemeprovided by the invention, the method comprises the following steps: sampling a calibration point to obtain sampling data of the distance and frequency of the calibration point; processing the sampling data to obtain an evaluation value of the sampling stability; constructing a calibration point distance and frequency curve, and obtaining an evaluation value of curve smoothness; and outputting acalibration effect according to the evaluation value of the sampling stability and the evaluation value of the curve smoothness. The calibration effect is output according to the evaluation value of the sampling stability and the evaluation value of the curve smoothness, feedback of the calibration effect output in the capacitor calibration process is provided for an operator, and the calibrationeffect can be visually displayed. Whether wiring needs to be calibrated again or checked and the electromagnetic interference condition of the machine tool needs to be checked can be determined according to the finally output calibration effect, and subsequent decision and operation are facilitated.

Description

technical field [0001] The present application relates to the technical field of laser cutting control, and more specifically, to a method and system for evaluating the effect of capacitance calibration. Background technique [0002] In laser cutting CNC machine tools, capacitive sensors are usually used to detect the distance from the cutting nozzle to the plate workpiece. An important step in using capacitive sensors is to perform capacitance calibration, that is, to record a series of capacitance values ​​corresponding to the distance. Traditional After the capacitance calibration is completed, only the signal of whether the calibration is completed is given. However, there may be interference during the calibration process, such as the movement of the plate, poor grounding, and large electromagnetic interference of the machine tool, which will cause abnormalities in the capacitance calibration. If the Z-axis is turned on at this time Follow-up control, it is easy to caus...

AI Technical Summary

Problems solved by technology

[0002] In laser cutting CNC machine tools, capacitive sensors are usually used to detect the distance from the cutting nozzle to the plate workpiece. An important step in using capacitive sensors is to perform capacitance calibration, that is, to record a series of capacitance values ​​corresponding to the distance. Traditional After the capacitance calibration is completed, only the signal of whether the calibration is completed is given. However, there may be interference during the calibration process, such as the movement of the plate, poor grounding, and large electromagnetic interference of the machine tool, which will cause abnormalities in the capacitance calibration. If the Z-axis is turned on at this time follow-up control, it is easy to cause abnormal movement

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