CN1640603A - Welding machine output characteristic control method - Google Patents
Welding machine output characteristic control method Download PDFInfo
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- CN1640603A CN1640603A CN 200410015925 CN200410015925A CN1640603A CN 1640603 A CN1640603 A CN 1640603A CN 200410015925 CN200410015925 CN 200410015925 CN 200410015925 A CN200410015925 A CN 200410015925A CN 1640603 A CN1640603 A CN 1640603A
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- 238000003466 welding Methods 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000008569 process Effects 0.000 claims abstract description 17
- 238000010891 electric arc Methods 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims abstract 2
- 238000012545 processing Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000013528 artificial neural network Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The present invention relates to an output characteristic control method of welding machine. Said method includes the following steps: 1. preselecting correspondent welding method and presetting correspondent parameter; 2. judging that the welding operation is started or not; 3. electric arc is ignited or not; 4. judging that the welding proces is stable or not, namely, is identical to the preset parameter or not, and according to the concrete welding process adaptatively regulating welding machine output to obtain required output characteristics; and 5. judging state of welding gun with and combining welding mode, judging that the arc is blown out or not, otherwise, repeating step 4 to step 5.
Description
Technical field
The present invention relates to a kind of output characteristic controlling method of welding machine.
Background technology
The output characteristics of simulation welding machine all is to adopt hardware circuit to obtain, and a kind of acquisition of output characteristics need design the corresponding hardware circuit, and this has increased the cost of welding machine, and mimic channel is subject to the influence of device performance simultaneously, and consistance is bad.Such as patent of invention " multifunctional electric welder having silicon controlled inverter and integral control "; a kind of multifunctional electric welder having silicon controlled inverter and integral control is disclosed; this welding machine is by input rectification circuit; on-off circuit; control circuit; holding circuit; main-transformer; output rectifier circuit; reactor is formed; it is characterized in that adopting integrated chip LM324 to constitute the welding machine output characteristics that external characteristic control circuit obtains needs; promptly constitute constant-current control circuit with integrated package LM324/1; hot arc ignition control circuit; constant-voltage control circuit; integrated package LM324/2 constitutes no-load voltage and sets up circuit and overvoltage crowbar; integrated package TPL521 constitutes the back-pressure signal deteching circuit; integrated package NEC555 constitutes the DC pulse control circuit, and integrated package CD40106 constitutes multi-resonant oscillating circuit and overheating protection circuit; integrated package CD4538 constitutes pulse shaping circuit; integrated package CD4027 constitutes two times of frequency dividing circuits; integrated package H009 constitutes power amplification circuit and two trigger circuit.The method of this invention is that the acquisition of certain external characteristics must be adopted the corresponding hardware control circuit, so the welding machine external characteristics is subjected to the device performance impact easily, and consistance is bad.
Summary of the invention
Technical matters to be solved by this invention provides a kind of welding output characteristic controlling method, and it can be by digital control acquisition.
Welding output characteristic controlling method of the present invention comprises the steps:
1, selects corresponding welding method and preset relevant parameters in advance;
2, judge whether welding begins;
3, whether electric arc ignites;
4, judge whether whether welding process stable promptly consistent with the parameter that presets, and regulate the output characteristics that welding machine output obtains needs according to concrete welding process self-adaptation;
5, judge the state of arc welding gun switch and, judge whether blow-out, otherwise repeated execution of steps 4 is to step 5 in conjunction with welding manner.
The remarkable advantage of this method is:
1, it is strong to widen function.Output characteristic of power source is controlled by software flexible, realizes a tractor serves several purposes easily, for automatic welder(welding machine), can increase functions such as welding parameter presets, remembers and reproduces.Utilize exact figure control, adopt technology such as electronic inductor and Waveform Control can realize efficient gas protection weldering, comprise the welding of high-speed welding and high deposition rate.
2, adaptability is strong.Utilize the memory function and high speed, high-accuracy digital signal treatment technology of computing machine, can make welding machine to multifunction and intelligent development, be convenient in welding machine, introduce modern control method such as adaptive control, fuzzy control, ANN (Artificial Neural Network) Control, carry out the optimization of welding parameter, the control of welding quality etc.
3, good operability.Utilize the high-speed computational capability and the abundant external interface and the ability to communicate of single-chip microcomputer and dedicated digital signal processor, on the basis of introducing intelligent control technologies such as fuzzy control, can realize the unified adjustment of simple welding parameter, realize " foolproof " operation of inverter type welder.
4, be easy to exploitation.Many tasks can be by hardware, also can finish by software, can be the basis with a power supply, by cooperating different control boxs, utilizes modular system to constitute dissimilar welding machines.The construction cycle of the source of welding current is short, cost is also low.
5, be convenient to upgrading.The welding machine of same type, the improvement of function can only realize by software design, to the express epoch of technology innovation now, can improve the serviceable life and the usable range of welding machine greatly.Being special welding machine when supporting, can change the performance of welding machine flexibly, be convenient to realize that special plane specially joins.
Description of drawings
Fig. 1 is a welding machine control main flow chart.
Fig. 2 is the process flow diagram that the T2 timer interrupts.
Fig. 3 is the process flow diagram that software timer interrupts.
Embodiment
The output characteristic controlling method of welding machine of the present invention comprises the steps:
1, selects corresponding welding method and preset relevant parameters in advance;
2, judge whether welding machine begins;
3, whether electric arc ignites;
4, judge that whether whether welding process stable promptly consistent with the parameter that presets, and regulates the output characteristics that welding machine output obtains needs according to concrete welding process self-adaptation;
5, judge the state of arc welding gun switch (AN) and, judge whether blow-out in conjunction with welding manner, otherwise
Repeated execution of steps 4 is to step 5.
Below in conjunction with concrete workflow method of the present invention is carried out illustrating of a step:
As shown in Figure 1: the present invention specifically comprises the steps:
Step 1, welding machine electrification reset are provided with status register, initialization system;
Step 2, user carry out presetting of welding parameter, because the welding method that welding machine is realized is more, designed corresponding welding method and preset parameter button on the welding machine panel, key assignments is handled subroutine and is responsible for handling the external keyboard value, handles button by the software timer subroutine in welding process;
Step 3, judge whether arc welding gun switch closes,, then supplied gas in 2 seconds in advance that soft start is set up no-load voltage, enters welding process if arc welding gun switch is pressed;
Step 4, in welding process, detect welding current, voltage in real time, and carry out closed-loop control, promptly adopt the T2 timer to detect control in real time, regulate welding current when changing and change in the opposite direction, and dynamically show parameters such as weldingvoltage, electric current simultaneously as weldingvoltage;
Step 5, judge whether arc welding gun switch unclamps, and transfers the blow-out sub-process at last, simultaneously, the backup welding parameter.
As shown in Figure 2: the method that the T2 timer described in the above-mentioned steps 4 detects control in real time comprises and comprising the steps:
Step 41, be in the constant current duty, then carry out current sample, adopt constant current PI control algolithm to control as welding machine;
Step 42, be in the constant voltage duty, then carry out voltage sample, adopt constant voltage PI control algolithm to control as welding machine;
Step 43 is in the pulsed operation state as welding machine, then carries out electric current, voltage sample, adopts pulse PI control algolithm to control.
As shown in Figure 3, the interruption of the software timer in the above-mentioned steps 2 flow process comprises the steps:
Step 21, carry out current sample, judged whether that button presses;
Step 22, press, then enter keyboard and handle subroutine if any key; As do not have key to press, then carry out
Step 23, carry out voltage sample, enter threshold voltage judgment processing subroutine;
Step 2, return.
Claims (6)
1, a kind of output characteristic controlling method of welding machine is characterized in that, comprises the steps:
1), selects corresponding welding method and preset relevant parameters in advance;
2), judge whether welding machine begins;
3), whether electric arc ignites;
4), judge whether stable whether welding process promptly consistent with the parameter that presets, and the output characteristics of regulating welding machine output acquisition needs according to concrete welding process self-adaptation;
5), judge the state of arc welding gun switch and, judge whether blow-out in conjunction with welding manner, otherwise continue execution in step 4).
2, ask the output characteristic controlling method of 1 described welding machine according to right, it is characterized in that, described step 1) realizes by corresponding welding method and preset parameter button that adjusting is located on the welding machine panel, also can call software timer interruption flow process and realize the button processing in welding process.
3, ask the output characteristic controlling method of 1 described welding machine according to right, it is characterized in that, described step 2) by judging the arc welding gun switch realization of whether closing.
4, ask the output characteristic controlling method of 1 described welding machine according to right, it is characterized in that, described step 4) realizes as follows: in welding process, detect welding current, voltage in real time, and carry out closed-loop control, promptly adopt the T2 timer to detect control in real time, and dynamically show parameters such as weldingvoltage, electric current simultaneously.
5, ask the output characteristic controlling method of 4 described welding machines according to right, it is characterized in that, the method that described T2 timer detects control in real time comprises the steps:
Step 41), be in the constant current duty, then carry out current sample, adopt constant current PI control algolithm to control as welding machine;
Step 42), be in the constant voltage duty, then carry out voltage sample, adopt constant voltage PI control algolithm to control as welding machine;
Step 43), is in the pulsed operation state, then carries out electric current, voltage sample, adopt pulse PI control algolithm to control as welding machine.
6, ask the output characteristic controlling method of 4 described welding machines according to right, it is characterized in that, described software timer interrupts flow process and comprises the steps:
Step 21), carry out current sample, judged whether that button presses;
Step 22), press, then enter keyboard and handle subroutine if any key; As do not have key to press, then carry out
Step 23), carry out voltage sample, enter threshold voltage judgment processing subroutine;
Step 24), return.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410015925XA CN1323792C (en) | 2004-01-17 | 2004-01-17 | Welding machine output characteristic control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410015925XA CN1323792C (en) | 2004-01-17 | 2004-01-17 | Welding machine output characteristic control method |
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| Publication Number | Publication Date |
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| CN1640603A true CN1640603A (en) | 2005-07-20 |
| CN1323792C CN1323792C (en) | 2007-07-04 |
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| CNB200410015925XA Expired - Fee Related CN1323792C (en) | 2004-01-17 | 2004-01-17 | Welding machine output characteristic control method |
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| CN105307808A (en) * | 2013-06-13 | 2016-02-03 | 伊利诺斯工具制品有限公司 | System and methods for anomalous cathode event control with control of welding current according to the state detected voltage |
| CN107427951A (en) * | 2015-02-06 | 2017-12-01 | 拉普兰塔理工大学 | Utilize the welding system of adaptive algorithm |
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| JP3102383B2 (en) * | 1997-08-07 | 2000-10-23 | 松下電器産業株式会社 | Arc welding equipment |
| CN2320362Y (en) * | 1997-12-12 | 1999-05-26 | 成都发动机公司 | Welding current constant-current controller for resistance welder |
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| CN1173793C (en) * | 2002-04-04 | 2004-11-03 | 上海工程技术大学 | Digital Signal Control System of Microbeam Plasma Welding Machine |
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| CN1323792C (en) | 2007-07-04 |
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