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A multi-axis motion numerical control system

A numerical control system, multi-axis motion technology, applied in the direction of digital control, electrical program control, etc., can solve the problems of long development cycle, weak computing and data processing capabilities, system real-time performance, poor reliability, etc., to shorten the development cycle, increase Adaptability and scalability, the effect of improving system reliability

Inactive Publication Date: 2015-08-19
CHINA UNIV OF MINING & TECH
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Problems solved by technology

However, in this invention, the resources on the single-chip microcomputer are limited, especially the calculation and data processing capabilities are relatively weak, which cannot well meet the requirements of high-performance servo control algorithms, system real-time performance and high interpolation speed; RS-232 can only constitute Master-slave structure system, the communication method can only be carried out in the form of master station rotation training, the system has poor real-time performance and reliability, and the development cycle is long

Method used

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  • A multi-axis motion numerical control system
  • A multi-axis motion numerical control system
  • A multi-axis motion numerical control system

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the drawings.

[0022] Such as figure 1 , figure 2 with image 3 As shown, the multi-axis motion numerical control system includes a CAN bus. The CAN bus is connected to a DSP (Digital Signal Processing) chip that communicates with the host computer through PCI, such as TI’s TMS320F2812, and multiple CAN buses drive motors DSP chip, PCI communication interface module, CAN communication module, general I / O interface, photoelectric isolation module, keyboard and display screen.

[0023] The DSP that communicates with the host computer through PCI on the CAN bus is mainly responsible for the interpolation operation of motion control, composes the interpolation result into the message and temporarily stores it in the local buffer, and waits for the CAN transmission interrupt to be generated. When the interrupt occurs, the message Before sending, it is necessary to determine whether the bus is operating n...

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Abstract

The invention discloses a multi-shaft motion numerical control system. The multi-shaft motion numerical control system comprises a CAN bus, a DSP communicated with an upper computer through a PCI on the CAN bus, a plurality of DSPs which are arranged on the CAN bus and used for driving motors, a PCI communication interface module, a CAN communication module, a universal I / O interface and an optoelectronic isolation module. The DSP communicated with the upper computer through the PCI on the CAN bus is mainly responsible for interpolation operation of motion control. The PCI communication interface module is mainly responsible for communication between the DSPs and the upper computer. Compared with the prior art, the multi-shaft motion numerical control system has the advantages that real-time communication is ensured in combination with the characteristics of the CAN bus, the reliability of the system is improved, the development cycle is shortened, the high-speed computing capacity of the DSPs is fully developed so that real-tine interpolation, speed planning and open-loop and closed-loop control can be completed, and consequently the adaptability and expandability of the control system are improved.

Description

Technical field [0001] The invention relates to a numerical control system, in particular to a multi-axis motion numerical control system. Background technique [0002] Multi-axis motion CNC systems are widely used in automation equipment, especially CNC processing equipment, textile machinery, packaging machinery and printing machinery. It is characterized by a large number of control motors, a wide range of equipment distribution, and high synchronization requirements, especially high requirements for real-time performance. For this kind of multi-axis motion control, distributed control technology based on fieldbus is often used to realize multi-axis linkage. [0003] CAN is the abbreviation of Controller Area Network (Controller Area Network), which belongs to the field of fieldbus, and is a serial communication network that effectively supports distributed control or real-time control. Its characteristics are: (1) There is no master-slave in data communication, any node can i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/18
Inventor 刘新华陈小虎郑显华李生鹏王冬冬王利峰
Owner CHINA UNIV OF MINING & TECH
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