CN1631599A - Bi-number signal processor control system of submerged arc welding machine - Google Patents
Bi-number signal processor control system of submerged arc welding machine Download PDFInfo
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- CN1631599A CN1631599A CN 200410093414 CN200410093414A CN1631599A CN 1631599 A CN1631599 A CN 1631599A CN 200410093414 CN200410093414 CN 200410093414 CN 200410093414 A CN200410093414 A CN 200410093414A CN 1631599 A CN1631599 A CN 1631599A
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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
The present invention relates to the double digital signal processor control system of a kind of control system of submerged arc welding machine, particularly a kind of submerged arc welding machine.Belong to the electric welding machine technical field.
Background technology
Efficient, high-quality characteristics that Lincoln weld has are being brought into play irreplaceable effect at production industries such as pressure vessel, petroleum machinery, shipbuilding, steel construction pieces.Yet, domestic submerged arc welding machine control system in the industrial circle extensive use adopts analog control circuit more at present, its maximum shortcoming is carry out complex process limited in one's ability, discrete component is many, complex structure, debug difficulties, the poor stability of parameter, consistency of performance and reliability all have very big deficiency, be difficult for optimal control, more difficultly carry out informationization and handle.
At present, had Single-chip Controlling has been introduced submerged arc welding machine, the control system that adopts simulation to combine with numeral.Wherein, single-chip microcomputer is mainly finished the given function of control signal, the welding process demonstration of amount in real time and the management function of program.Though digitlization has been realized in the given and display part at signal, but be subjected to the restriction of single-chip machine information disposal ability and operational capability, the external characteristics of power supply adopts analog circuit to realize the PID closed-loop control, wire feeding circuit and carriage walking circuit also still adopt analog circuit control, the control that is whole welder system also is not the Digital Control of complete meaning, still has some shortcomings of analog control system.
Find through literature search prior art, " the monolithic processor controlled IGBT inversion submerged arc welding machine design " that Li Heqi delivers in October, 2004 the 10th phase at " electric welding machine " the 34th volume, this article adopts the 80C196KC single-chip microcomputer as main control chip, finishes the control of control of submerged arc welding electric power external characteristics and wire feeding motor and trolley walking motor.The 80C196KC single-chip microcomputer welds given parameter and feedback parameter by real-time sampling, according to its deviate through the PI computing, export target control parameter, this control parameter changes voltage signal into through the D/A conversion chip, it is sent into pulse width modulator SG3525, its output signal amplify to drive through the EXB841 chip power, and then finishes the opening and turn-offing of IGBT of main circuit, thereby realizes the control of characteristic of welding power source.The control of wire feeding motor and vehicle motor is identical with the control principle of generator characteristic, promptly still adopts simulation control and the digital control control system that combines, and still has some shortcomings of employing analog control system in this system.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of double digital signal processor control system of submerged arc welding machine is proposed, making it adopt two high speed digital signal processors is that master, single-chip microcomputer are auxilliary, all control strategies of system are realized by the mode of software, have been realized the full-digital control of submerged arc welding machine.The submerged arc welding expert system is embedded in the single-chip microcomputer internal program memory, makes weld procedure specification have intelligent expert normative choice function.Simultaneously, the external mini-printer of single-chip microcomputer can be called the required welding parameter of printer prints in real time in welding process.
The present invention is achieved by the following technical solutions, the present invention includes: generator characteristic control module, wire feed and dolly control module and miscellaneous function module.
First digital signal processor DSP and submerged arc welding machine main circuit, transformer, first voltage sensor and current sensor are connected to form the generator characteristic control module, wherein, transformer links to each other with three road TPWM unit with three road capturing units of first digital signal processor DSP respectively by optical coupling isolator with the submerged arc welding machine main circuit, isolates purpose to reach electricity; First voltage sensor and the current sensor directly D/A conversion unit in the filtering link and first digital signal processor DSP are communicated with.
Second digital signal processor DSP and second voltage sensor, wire feeding motor, welding machine walking dolly motor connect and compose wire feed and dolly control module, wherein, second voltage sensor of submerged arc welding machine, electric loop of wire feeding motor and electric loop of welding machine walking dolly motor are communicated with through the D/A conversion unit of filtering link with second digital signal processor DSP; Another electric loop of wire feeding motor and another electric loop of welding machine walking dolly motor be respectively by separately the drive circuit T1PWM through the light-coupled isolation element and second digital signal processor DSP, OUT1, and T2PWM, OUT2 is communicated with, and isolates purpose to reach electricity.
Single-chip microcomputer and mini-printer, keyboard and LCD constitute the miscellaneous function module.The serial port of single-chip microcomputer is communicated with the serial port of first digital signal processor DSP and the serial-port communication of second digital signal processor DSP respectively by 485 chips, reach the full communication purpose of The whole control system, promptly whole welding overall process is to communicate by letter with first, second digital signal processor DSP by single-chip microcomputer with coordinating to finish; Single-chip microcomputer can also with statistics with the PC connection of communicating by letter, and then finish the system evaluation of welding process stability.
It is main two DSP control system cores that constitute that the present invention adopts two high speed digital signal processors, sets the control core of a single-chip microcomputer as the miscellaneous function module, thereby constitutes the digitlization submerged arc welding machine of realizing all control strategies with software mode.First digital signal processor (DSP) is realized the modulation and the control of welding machine external characteristics by software programming; Second digital signal processor (DSP) is walked the control of motor and wire feeding motor by software programming realization welding machine garage; Single-chip microcomputer by software programming implementation procedure information print, the welding machine procedure parameter shows in real time, man-machine interaction panel information communication etc.The submerged arc welding parameter is embedded in the single-chip microcomputer internal program memory with the expert system form, has intelligent expert normative choice function.The external characteristics of submerged arc welding machine can be selected at machine, adapts to welding methods such as manual welding, carbon arc air gouging, gas shielded arc welding.
The present invention has substantive distinguishing features and marked improvement, and control system of the present invention has realized the total digitalization of submerged arc welding machine control, networking, and signal is handled and long-range integrated dispatch in real time; All control strategies are realized by the mode of software, have realized submerged arc welding machine full-digital control truly.Control system is flexible, and it is multi-functional integrated that welding machine is realized, and then can realize the multiple welding process requirement except that submerged-arc welding, as manual electric arc welding, gas shielded arc welding, carbon arc air gouging etc.For different welding techniques, select different control strategies and control parameter for use, can be good at finishing corresponding technological effect.Simultaneously, this welding machine has printing function, can regularly or call the required data of printer prints.
Description of drawings
Fig. 1 block diagram of system of the present invention
The specific embodiment
As shown in Figure 1, the present invention includes: generator characteristic control module, wire feed and dolly control module and miscellaneous function module.First digital signal processor DSP and submerged arc welding machine main circuit, transformer, first voltage sensor and current sensor are connected to form the generator characteristic control module, wherein, transformer links to each other with three road TPWM unit with three road capturing units of first digital signal processor DSP respectively by optical coupling isolator with the submerged arc welding machine main circuit; With first voltage sensor and current sensor directly the D/A conversion unit in the filtering link and first digital signal processor DSP be communicated with; Second digital signal processor DSP and second voltage sensor, wire feeding motor, welding machine walking dolly motor connect and compose wire feed and dolly control module, wherein, second voltage sensor of submerged arc welding machine, electric loop of wire feeding motor and electric loop of welding machine walking dolly motor are communicated with through the D/A conversion unit of filtering link with second digital signal processor DSP; Another electric loop of wire feeding motor and another electric loop of welding machine walking dolly motor be respectively by separately the drive circuit T1PWM through the light-coupled isolation element and second digital signal processor DSP, OUT1, and T2PWM, OUT2 is communicated with; Single-chip microcomputer and mini-printer, keyboard and LCD constitute the miscellaneous function module, and the serial port of single-chip microcomputer is that whole welding overall process is to communicate by letter with first, second digital signal processor DSP by single-chip microcomputer with coordinating to finish with the serial port of first digital signal processor DSP and the serial-port communication connection of second digital signal processor DSP respectively by 485 chips; Single-chip microcomputer can also with statistics with the PC connection of communicating by letter.
During work, at first finish all required initial setting up of welding by the miscellaneous function module, promptly show some informations with the form of menu by LCD, finish welding current, wire feed rate, welding manner, gage of wire, the isoparametric setting of carriage walking direction by keyboard operation, single-chip microcomputer has the intelligent expert selection function, according to above-mentioned setting, call the required expert parameter of corresponding welding.After all are provided with end in affirmation, single-chip microcomputer is with respectively that first digital signal processor DSP is the required data of the mode of SCI serial communication (welding manner, gage of wire, given welding current or weldingvoltage, the tables of data of pilot angle correspondence etc.) and the required data of second digital signal processor DSP (welding manner, gage of wire, given wire feed rate or welding current, the tables of data of pilot angle correspondence etc.) transmit in the past;
Three road signals that taken out by transformer are exported synchronizing signal by three road capturing units that optical coupling isolator sends first digital signal processor DSP to as power supply after signal processing circuit is handled, first digital signal processor DSP is finished real-time data acquisition by first voltage sensor and current sensor, welding current of gathering and arc voltage are finished data processing, pid algorithm by software, export by three road TPWM unit again, finish the triggering of main circuit control by optical coupling isolator and drive circuit, and then realize real-time control characteristic of welding power source;
Welding arc voltage is connected with second digital signal processor DSP through second voltage sensor and filter circuit, the armature voltage of vehicle motor is connected with second digital signal processor DSP through filter circuit, second digital signal processor DSP is according to the welding arc voltage of gathering in real time, the armature voltage of vehicle motor, realize pid algorithm by software, the T1PWM signal and the OUT1 signal of the output of second digital signal processor are realized respectively the closed-loop control of wire feeding motor speed and the control of wire feeding motor direction through optical coupling isolator and wire feed drive circuit; The T2PWM signal and the OUT2 signal of the output of second digital signal processor are realized respectively the closed-loop control of vehicle motor speed and the control of vehicle motor direction through optical coupling isolator and carriage walking drive circuit.
The output controlled quentity controlled variable of whole welding process is realized according to algorithm by software that all analog circuit is only finished the isolation and the power amplification of output controlled quentity controlled variable signal, and promptly The whole control system has realized the full-digital control of submerged arc welding machine.
Claims (5)
1, a kind of double digital signal processor control system of submerged arc welding machine, comprise: the generator characteristic control module, wire feed and dolly control module and miscellaneous function module, it is characterized in that, the generator characteristic control module is by first digital signal processor DSP, the submerged arc welding machine main circuit, transformer, first voltage sensor and current sensor constitute, wherein, first digital signal processor DSP is connected by optical coupling isolator with the submerged arc welding machine main circuit with transformer, first digital signal processor DSP and first voltage sensor, current sensor is by directly connecting through the filtering link; Wire feed and dolly control module are made of second digital signal processor DSP and second voltage sensor, wire feeding motor, welding machine walking dolly motor, and second voltage sensor of submerged arc welding machine, wire feeding motor electricity loop, welding machine walking dolly motor electricity loop are communicated with second digital signal processor DSP respectively; The miscellaneous function module is made of single-chip microcomputer and mini-printer, keyboard and LCD, and the serial port of single-chip microcomputer is communicated with the serial-port communication of first, second digital signal processor DSP.
2, the double digital signal processor control system of submerged arc welding machine according to claim 1, it is characterized in that, transformer links to each other with three road TPWM unit with three road capturing units of first digital signal processor DSP respectively by optical coupling isolator with the submerged arc welding machine main circuit, and first voltage sensor and the current sensor directly D/A conversion unit in the filtering link and first digital signal processor DSP are communicated with.
3, the double digital signal processor control system of submerged arc welding machine according to claim 1, it is characterized in that, second voltage sensor of submerged arc welding machine, electric loop of wire feeding motor and electric loop of welding machine walking dolly motor are communicated with through the D/A conversion unit of filtering link with second digital signal processor DSP, another electric loop of wire feeding motor and another electric loop of welding machine walking dolly motor are respectively by separately the drive circuit T1PWM through the light-coupled isolation element and second digital signal processor DSP, OUT1, T2PWM, OUT2 is communicated with.
4, the double digital signal processor control system of submerged arc welding machine according to claim 1, it is characterized in that, the serial port of single-chip microcomputer is communicated with the serial-port communication of first, second digital signal processor DSP respectively by 485 chips, and promptly whole welding overall process is to communicate by letter with first, second digital signal processor DSP by single-chip microcomputer with coordinating to finish.
5, according to the double digital signal processor control system of claim 1 or 4 described submerged arc welding machines, it is characterized in that, single-chip microcomputer or simultaneously with statistics with the PC connection of communicating by letter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB200410093414XA CN1305627C (en) | 2004-12-23 | 2004-12-23 | Bi-number signal processor control system of submerged arc welding machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200410093414XA CN1305627C (en) | 2004-12-23 | 2004-12-23 | Bi-number signal processor control system of submerged arc welding machine |
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| CN1631599A true CN1631599A (en) | 2005-06-29 |
| CN1305627C CN1305627C (en) | 2007-03-21 |
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| CNB200410093414XA Expired - Fee Related CN1305627C (en) | 2004-12-23 | 2004-12-23 | Bi-number signal processor control system of submerged arc welding machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357054C (en) * | 2005-07-28 | 2007-12-26 | 上海交通大学 | Man machine alternating system of full digitalization hidder arc wolding |
| CN101804497A (en) * | 2010-04-19 | 2010-08-18 | 成都佳士科技有限公司 | Method for controlling electromagnetic interference signal of electric welder |
| CN102416518A (en) * | 2011-12-14 | 2012-04-18 | 中冶辽宁德龙钢管有限公司 | Submerged arc welding controller |
| CN104749969A (en) * | 2013-12-30 | 2015-07-01 | 唐山长城电焊机总厂有限公司 | 1500A all-digital inverter soft switching submerged arc welder wire feeding system control circuit |
| CN110125517A (en) * | 2019-05-23 | 2019-08-16 | 深圳市佳士科技股份有限公司 | A kind of submerged arc welding machine moving trolley and its control method, control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2114843B (en) * | 1982-01-26 | 1986-05-29 | Standard Telephones Cables Ltd | Digital transmission system |
| RU2126737C1 (en) * | 1990-01-04 | 1999-02-27 | Си-Ар-Си-Иванс Пайплайн Интернэшнл, Инк. | Welding process control system |
| FR2702910B1 (en) * | 1993-03-16 | 1995-04-28 | Cit Alcatel | System for restoring the transmission quality of a link including amplifier equipment, in the event of failure of one or more of these amplifier equipment. |
| CN2385835Y (en) * | 1999-07-03 | 2000-07-05 | 刘跃基 | Submerged-arc welding surfacing welding device for crankshaft retreading and its control circuit |
| US6399912B1 (en) * | 2000-04-25 | 2002-06-04 | Illinois Tool Works Inc. | Method and apparatus for submerged arc welding |
| CN1186162C (en) * | 2002-06-27 | 2005-01-26 | 上海交通大学 | Digital driving circuit for main circuit of silicon controlled welding machine |
-
2004
- 2004-12-23 CN CNB200410093414XA patent/CN1305627C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357054C (en) * | 2005-07-28 | 2007-12-26 | 上海交通大学 | Man machine alternating system of full digitalization hidder arc wolding |
| CN101804497A (en) * | 2010-04-19 | 2010-08-18 | 成都佳士科技有限公司 | Method for controlling electromagnetic interference signal of electric welder |
| CN101804497B (en) * | 2010-04-19 | 2012-12-05 | 成都康瑞特科技开发有限责任公司 | Method for controlling electromagnetic interference signal of electric welder |
| CN102416518A (en) * | 2011-12-14 | 2012-04-18 | 中冶辽宁德龙钢管有限公司 | Submerged arc welding controller |
| CN104749969A (en) * | 2013-12-30 | 2015-07-01 | 唐山长城电焊机总厂有限公司 | 1500A all-digital inverter soft switching submerged arc welder wire feeding system control circuit |
| CN110125517A (en) * | 2019-05-23 | 2019-08-16 | 深圳市佳士科技股份有限公司 | A kind of submerged arc welding machine moving trolley and its control method, control device |
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| Publication number | Publication date |
|---|---|
| CN1305627C (en) | 2007-03-21 |
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