Order analysis method based on numerical control machine tool spindle current signals
A technology of spindle current and CNC machine tools, applied in image analysis, testing of mechanical components, testing of machine/structural components, etc., can solve problems such as time domain extraction that cannot obtain orders
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[0038] The present invention will be further described in detail below with reference to the accompanying drawings. The following examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.
[0039] Specifically, such as figure 1 The method flow chart shown. The present invention provides an order analysis method based on the spindle current signal of a numerically controlled machine tool, including the following steps:
[0040] S1, synchronously collect the continuous time domain signals of the spindle current and spindle vibration of the CNC machine tool;
[0041] S2, performing piecewise Fourier series fitting on the spindle current signal obtained in step S1 to obtain a current smoothed time domain signal;
[0042] S3, searching for the zero-crossing time of the current time-domain signal obtained in step S2, and calculating the speed curve;
[0043] S4, using an improved second-generation Kalman filte...
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