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Multi-channel laser galvanometer motion control system with multiple connection modes

A motion control system, laser galvanometer technology, applied in general control systems, control/adjustment systems, program control, etc., can solve the problems of limited working range of galvanometer processing equipment, inconvenient switching of motion modes, etc., to simplify system design and The effect of the machining process

Active Publication Date: 2020-08-07
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to provide a multi-channel laser galvanometer motion control system with multiple connection modes to solve the problems of limited working range and inconvenient switching of motion modes in current galvanometer processing equipment

Method used

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  • Multi-channel laser galvanometer motion control system with multiple connection modes
  • Multi-channel laser galvanometer motion control system with multiple connection modes
  • Multi-channel laser galvanometer motion control system with multiple connection modes

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Such as figure 2 As shown, a dual-channel motion control scheme of a multi-channel laser galvanometer motion control system with multiple connection modes includes a host computer control module 1, a synchronization control module 2 and a servo drive module 3. Synchronous control module 2 can be divided into MCU control module 4 and FPGA control module 5; the servo drive module is now XY galvanometer module 6, including galvanometer XY dual-axis channels. The host computer control module 1 sends trajectory commands and receives feedback signals to the MCU control module 4 in the synchronization control module 2 through the ETH Ethernet communication interface; the MCU control module 4 exchanges servo control input and output signals with the FPGA control module 5 through the SPI interface; The FPGA control module 5 implements closed-loop control through a custom control algorithm, and communicates with the servo drive module through a D / A interface.

[0020] The host comp...

Embodiment 2

[0026] Such as figure 2 As shown, a three-channel motion control scheme of a multi-channel laser galvanometer motion control system with multiple connection modes includes a host computer control module 1, a synchronization control module 2 and a servo drive module 3. Synchronous control module 2 can be divided into MCU control module 4 and FPGA control module 5; the servo drive module is now XY galvanometer module 6 and Z-axis dynamic focus module 7, including galvanometer XY dual-axis channels and Z-axis channels. The host computer control module 1 sends trajectory commands and receives feedback signals to the MCU control module 4 in the synchronization control module 2 through the ETH Ethernet communication interface; the MCU control module 4 exchanges servo control input and output signals with the FPGA control module 5 through the SPI interface; FPGA control module 5 realizes closed-loop control through a custom control algorithm, and communicates with the servo drive modu...

Embodiment 3

[0033] Such as image 3 As shown, a four-channel motion control scheme of a multi-channel laser galvanometer motion control system with multiple connection modes includes a host computer control module 1, a synchronization control module 2 and a servo drive module 3. Synchronous control module 2 can be divided into MCU control module 4 and FPGA control module 5; the servo drive module is now XY galvanometer module 6 and XY motion platform 8, including galvanometer XY dual-axis channels and motion platform XY dual-axis channels. The host computer control module 1 sends trajectory commands and receives feedback signals to the MCU control module 4 in the synchronization control module 2 through the ETH Ethernet communication interface; the MCU control module 4 exchanges servo control input and output signals with the FPGA control module 5 through the SPI interface; FPGA control module 5 realizes closed-loop control through a custom control algorithm, and communicates with the servo...

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Abstract

The invention discloses a multi-channel laser galvanometer motion control system with multiple connection modes. The multi-channel laser galvanometer motion control system comprises an upper computercontrol module, a synchronous control module and a servo driving module. The synchronous control module can be divided into an MCU control module and an FPGA control module, and the servo driving module can be divided into an XY galvanometer module, a Z-axis dynamic focusing module and an XY motion platform, wherein the XY galvanometer module and the XY motion platform respectively comprise an XYdouble-axis channel, and the Z-axis dynamic focusing module comprises a single Z-axis channel. The FPGA control module realizes the closed-loop control of the galvanometer system through a self-defined control algorithm, and realizes the data interaction and synchronous control between different servo driving modules through XY2-100 or other self-defined protocols. Each synchronous control moduleforms a synchronous control board card, and various galvanometer scanning modes can be achieved by using the single board card or connecting two board cards and switching the control channels. The multi-channel laser galvanometer motion control system can be suitable for different working conditions.

Description

Technical field [0001] The invention relates to a multi-channel laser galvanometer motion control system with multiple connection modes. Background technique [0002] Due to its fast speed and high precision, the laser galvanometer processing technology has been widely used in laser cutting, polishing, light curing processing and other fields. [0003] The current galvanometer movement system is mainly based on the XY plane galvanometer, but the general plane galvanometer scan movement [0004] The system is limited in the scope of processing. In order to expand the processing range, there are two traditional methods: [0005] One is to increase the range of the field lens, but this method will cause nonlinear imaging at the edge of the field lens; the other is to use a galvanometer array, but due to the high price of the galvanometer, the overall cost will increase significantly. In recent years, two emerging methods have been developed and applied: one is a dynamic focusing system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/24215
Inventor 张震李毅拓曹越
Owner TSINGHUA UNIV
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