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Air line interpolated method based on commixed realization of time split-run and figure integral method

A digital integration and linear interpolation technology, applied in the direction of digital control, electrical program control, etc., can solve the problems of reduced processing efficiency, acceleration and deceleration, difficulty in dealing with zero distance, uneven feed speed, etc., to improve processing efficiency and eliminate zero. Distance, to achieve the effect of uniform and coordinated transmission

Inactive Publication Date: 2007-05-16
UNIV OF SCI & TECH OF CHINA
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AI Technical Summary

Problems solved by technology

[0004] (1) In the case of discretized representation of processing codes, there will be intractable zero-point distances in the interpolation process, resulting in uneven feed rates;
[0005] (2) Through complex acceleration and deceleration control, the purpose of eliminating zero distance and improving the uniformity of feed speed can be achieved, but it will lead to a decrease in processing efficiency and frequent acceleration and deceleration;
[0006] (3) When the feed amount of each axis corresponding to the straight line segment has a large difference, the interpolation error will increase due to the subdivision of the straight line segment

Method used

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  • Air line interpolated method based on commixed realization of time split-run and figure integral method
  • Air line interpolated method based on commixed realization of time split-run and figure integral method
  • Air line interpolated method based on commixed realization of time split-run and figure integral method

Examples

Experimental program
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Effect test

example 1

[0062] Example 1: Let the starting point Ps of the space straight line be (13.796, -8.973, -1.654), and the end point Ps e is (13.555, -9.214, -1.692), the expected feed rate is 3000mm / min, the default interpolation period is 1ms, and the corresponding zero distance is 0.042mm. The result obtained by adopting the present invention is that the number of times of linear interpolation is 6, the average value of the speed unevenness coefficient is 0.5%, and the average value of the interpolation error is 0.00003mm.

example 2

[0063] Example 2: Let the starting point Ps of the space straight line be (7.375, -2.589, -5.070), the end point Pe be (7.717, -2.247, -5.016), the desired feed speed is 3000mm / min, and the default interpolation period is 1ms, corresponding to The zero-to-head distance is 0.036mm. The result obtained by adopting the present invention is that the number of times of linear interpolation is 9, the average value of the speed unevenness coefficient is 0.5%, and the average value of the interpolation error is 0.00004mm.

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Abstract

This invention relates to one space line insert method based on time division method and maths integral method, which relates to move control space insert control technique and is characterized by the following: on basis of the above method, it adopts controllable insert circle summed impulse times to process rough insert on space line and then adopts digital integral method for accurate insert according to preset division parameters.

Description

technical field [0001] The invention relates to a control technology in motion control, in particular to a space linear interpolation method based on a time division method and a digital integration method of a motion controller. Background technique [0002] In multi-axis continuous trajectory machining, it is an important goal of the motion controller to achieve a smooth feed rate under the condition of meeting the position accuracy requirements, and it is of great significance to improve the smoothness of the machined surface. The usual motion controller uses a time division method based on rough and fine two-level interpolation and a fixed interpolation period for linear interpolation. The small straight line segment corresponding to the feed speed, and then use the hardware for fine interpolation. In the fixed interpolation cycle, the digital integration method is used to send the feed pulse of each axis evenly to the small straight line segment according to the fixed c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/4103
Inventor 丛爽刘宜方凯钱玮
Owner UNIV OF SCI & TECH OF CHINA
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