Bi-number signal processor control system of submerged arc welding machine

A digital signal, submerged arc welding machine technology, applied in arc welding equipment, manufacturing tools, welding equipment, etc.

Inactive Publication Date: 2005-06-29
SHANGHAI JIAO TONG UNIV +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

The control principle of the wire feeding motor and the trolley motor is the same as the control principle of the external characteristics of the power supply, that is, the control system combining analog control and digital control is still used, and there are still some shortcomings of using the analog control system in this system

Method used

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  • Bi-number signal processor control system of submerged arc welding machine

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Embodiment Construction

[0013] Such as figure 1 As shown, the present invention includes: a power supply external characteristic control module, a wire feeding and trolley control module and an auxiliary function module. The first digital signal processor DSP is connected with the main circuit of the submerged arc welding machine, the transformer, the first voltage sensor and the current sensor to form a control module for external characteristics of the power supply, wherein the transformer and the main circuit of the submerged arc welding machine are respectively connected to the main circuit of the submerged arc welding machine through an optocoupler isolator. The three-way capture unit of the first digital signal processor DSP is connected to the three-way TPWM unit; the first voltage sensor and the current sensor are directly connected to the digital-to-analog conversion unit in the first digital signal processor DSP through a filtering link; the second digital The signal processor DSP is connec...

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Abstract

The invention is a submerged arc welding machine dual digital signal processor control system. The power source external characteristic module consists of primary digital signal processor DSP and submerged arc welding machine main circuit, primary voltage sensor and current sensor. Feeding and buggy control module consists of secondary digital signal processor DSP and secondary voltage sensor, feeding motor, buggy motor which linked together. Aiding functions module consists of single piece processor and micro printer, keyboard and LCD. Single piece processor serial port links with the serial ports of primary and secondary digital signal processor. The two DSP each finishes the power source external characteristic closed ring control and the buggy moving motor and feeding motor closed ring control. The single piece processor is mainly in charge of man-machine port, communication, printing, real-time displaying the welding status parameter. The whole system is controlled by software which is namely the all digital control of submerged are welding machine.

Description

technical field [0001] The invention relates to a control system of a submerged arc welding machine, in particular to a double digital signal processor control system of the submerged arc welding machine. It belongs to the technical field of electric welding machines. Background technique [0002] Submerged arc automatic welding has the characteristics of high efficiency and high quality, and plays an irreplaceable role in the production industries such as pressure vessels, petroleum machinery, shipbuilding, and steel structural parts. However, at present, the submerged arc welding machine control system widely used in the industrial field in China mostly uses analog control circuits. Its biggest disadvantages are limited ability to perform complex processing, many discrete components, complex structure, difficult debugging, and poor stability of parameters. Both performance consistency and reliability have great deficiencies, it is not easy to optimize control, and it is e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/095B23K9/10B23K9/18
Inventor 宋政华学明徐鸣徐国祥刘伟赵楠李芳
Owner SHANGHAI JIAO TONG UNIV
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