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Motion control system and position control method thereof

A motion control system and controller technology, applied in digital control, electrical program control, etc., can solve problems such as expensive real-time communication tasks, save real-time computing resources, improve reliability, and facilitate maintenance and debugging.

Inactive Publication Date: 2012-02-15
数驱技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] 2. Time lag problem
For this reason, the existing motion control system must consume a large amount of real-time computing resources to process real-time communication tasks under the control of the communication cycle
[0026] 3. Standardization issues
As a result, the interpolation cycle and communication cycle become insurmountable obstacles restricting the standardization of existing motion control systems

Method used

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  • Motion control system and position control method thereof
  • Motion control system and position control method thereof
  • Motion control system and position control method thereof

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Embodiment Construction

[0083] As we all know, in the digital control process of the mechanical system, the so-called real-time process is to control the linkage of related coordinate axes to synthesize the tool path curve (Tool Path). The so-called digital control is to discretize the tool path curve into the discrete position information required by the coordinate axis and send it to the servo drive device at a certain time interval to control the synthetic displacement of the coordinate axis.

[0084] In general, the coordinate axes of the linkage are five axes such as X, y, Z, A, and B, and the tool path curve is a function of five variables such as X, y, Z, A, and B. The coordinate value increments received by the five servo drives such as X, y, Z, A, and B are listed in Table 1 in time series.

[0085] Table 1

[0086]

[0087] In Table 1, the time T is discretely divided into n intervals: Δt 1 ,...,Δt n , 5 variables such as X, y, Z, A, B, etc. are in Δt i The increment of the coordinat...

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Abstract

The invention provides a fully-open standardized motion control system and a position control method thereof for an open numerical control system. In the invention, a communication cycle is not required to be set, and a real-time communication interface is extremely simple, therefore, huge amounts of real-time computing resources are saved, operations of maintenance and debugging are simple and convenient, and the reliability of the motion control system is remarkably increased. Through using a linkage interface and a shaft linkage table file in the invention, real-time computing resources are significantly saved, therefore, the defects such as long sampling period and complex algorithm and the like in a feed-forward link are overcome, and favorable conditions for researching and developing new algorithms are created. For dynamic lags and position errors generated by the certainty changes of loads, a current feed-forward control is set in a current loop of the invention, thereby providing a new technical means for controlling dynamic lags.

Description

technical field [0001] The invention belongs to the field of advanced control, and in particular relates to a motion control system, one of the basic technologies of high-speed and high-precision machining. Based on data flow correlation control, the invention provides a high-performance motion control system and a position control method for an open numerical control system. technical background [0002] Open CNC system, high-performance motion control system, and high-precision sensors are the basic technologies for high-speed and high-precision machining. [0003] In the digital control of machine tools, the motion control system is mainly used to control the speed and rotation angle of the servo motor. The so-called speed control is also called speed mode, that is, speed control, which is used to control the speed of the spindle; the so-called rotation angle control is also called position mode, that is, position control, which is used to control the displacement of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/18
Inventor 江俊逢
Owner 数驱技术有限公司
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