A control method for high-speed and high-precision multi-axis synchronous motion based on dual clocks

Abstract

The invention discloses a control method for a multi-axis synchronous movement with a high speed and a high precision based on a double clock, and the final purpose is to output a pulse sequence and direction signals to a servo drive of each shaft. The method comprises steps of: determining an output time and a direction of a pulse through the calculation; determining a size clock period accordingto the maximum movement speed of each shaft and the input pulse range; converting the time and direction signals into pulse direction numbers, and storing the pulse direction data in a data file in the form of a two-dimensional array; reading and analyzing the pulse direction number of the two-dimensional array format in the data file by a numerical control device; uninterruptedly converting thepulse direction numbers of the two-dimensional array format into pulse and direction signals, by the switch and the timer, and the large-cycle clock is used as the synchronization signal; and inputting the signals to the servo drive, so that the trajectory movement is completed. According to the control method for the multi-axis synchronous movement with the high speed and the high precision basedon the double clock, the method realizes the control of the multi-axis synchronous movement with the high speed and the high precision through the calculation and hardware synchronous output method;improves the processing efficiency by the high speed; and improves the processing quality of the product with the high precision.

Description

technical field

[0001] The invention relates to the technical field of numerical control, in particular to a high-speed and high-precision multi-axis synchronous motion control method based on dual clocks. Background technique

[0002] Numerical control technology is an important part of modern advanced manufacturing technology that uses digital control methods to realize automatic control of physical quantities such as position, angle, and speed, and other switching quantities. The numerical control system generally refers to the computer numerical control system, which is a system that uses a computer to achieve numerical control. The computer numerical control system mainly includes three parts: input and output device, numerical control device and servo drive, which is the core of numerical control technology.

[0003] General computer numerical control systems have interpolators, simple ones include linear interpolation and circular interpolation, and complex ones incl...

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