CN101963801B - Modularized intelligent welding power-supply system and on-line method for realizing same - Google Patents
Modularized intelligent welding power-supply system and on-line method for realizing same Download PDFInfo
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Abstract
The invention is suitable for the field of communication, and provides a modularized intelligent welding power-supply system and an on-line method for realizing the same. The system comprises a main circuit, a digital signal processor (DSP) power-supply master control board, an advanced RISC machine (ARM) man-machine interface board, an insulated gate bipolar transistor (IGBT) driver circuit and a controller area network (CAN) bus which are connected sequentially, wherein the IGBT driver circuit is respectively connected with the main circuit and the DSP power-supply master control board; and the CAN bus is connected with the DSP power-supply master control board. The system has the advantages that: multiple welding modes are realized on one power-supply system by a dual-chip control circuit of a DSP and an ARM; the output with different external characteristics is realized by digitalized programming under the condition that a power-supply hardware circuit is not changed so as to meet the process requirements of different welding methods; through the on-line operation of a plurality of power-supply systems, the output of the power supply with high power is realized conveniently, and the twin-wire welding of thin wires and the twin-wire welding of thick wires are realized; and particularly, the plurality of power-supply systems are controlled synergistically through CAN bus technology.
Description
Technical field
The present invention relates to source of welding current technical field, relate in particular to a kind of modularization intelligent welding power source system and realize the welding power source system connecting method.
Background technology
China is not only shipbuilding the biggest in the world and maximum automobile consumption state, is also simultaneously maximum bullet train manufacturing nation, and so long as metal connects occasion, will uses the source of welding current.With regard to Guangdong Province, all none can connect power supply from snapping for its equipment manufacture, pipeline industry, shipbuilding industry, car industry etc.
But present domestic source of welding current function singleness of selling on the market, network communicating function a little less than, can not realize high-power output in the mode of Collaborative Control by multi-machine parallel connection.Domestic high power welding power supply is the high-power welding machine of central controlled tradition, and Power Management Design need to adopt high power module, and heat dissipation design is difficulty relatively.
Welding efficiency and the quality of more domestic large enterprises in order to improve important component, begin from the efficient automatic welding equipment of external introduction mariages in addition, is mainly that the filament double-wire automatic welding connects Processes and apparatus.But for the welding of thick macrostructure spare, the filament double wire welding still is difficult to further speed-raising, and reason is the welding current restriction.
Summary of the invention
The object of the present invention is to provide a kind of modularization intelligent welding power source system and realize the welding power source system connecting method, this welding power source system adopts digital, soft switch and modular design mode, both can guarantee the multi-functional of separate unit power supply, realize a tractor serves several purposes, simultaneously during and mariages high-speed welding high-power at needs, can realize multi-machine parallel connection and Collaborative Control by the CAN bus communication function of power supply again.
The embodiment of the present invention is to realize like this, a kind of modularization intelligent welding power source system, comprise: the main circuit, DSP power supply master control borad and the ARM man-machine interface board that are connected successively, reach IGBT driving circuit, CAN bus, described IGBT driving circuit is connected with DSP power supply master control borad with main circuit respectively, and described CAN bus is connected with described DSP power supply master control borad.
Wherein, described main circuit is connected to form successively by input rectifying module, input filter module, soft-switching inversion module, high-frequency transformer, output rectification module and output filtering module, described input rectifying module is connected with three-phase alternating-current supply, and described output filtering module connects load.
Wherein, described DSP power supply master control borad comprises: DSP basic circuit, primary current sample circuit, output current/voltage sampling circuit, signal conditioning circuit, PWM output module, CAN bus interface circuit and RS485 interface circuit, described CAN bus interface circuit connects the CAN bus.
Wherein, described ARM man-machine interface board comprises: ARM basic circuit, LCD and keyboard interface circuit and RS485 interface circuit, described ARM man-machine interface board is connected through the RS485 interface circuit with DSP power supply master control borad.
Wherein, described IGBT driving circuit comprises: 4 tunnel isolation+driving circuit that 24V direct supply, 4 route optocouplers form, an end of described IGBT driving circuit is connected with described PWM output module, and the other end is connected with described soft-switching inversion module.
Wherein, with the replaceable described LCD of touch screen interface circuit and keyboard interface circuit.
A kind ofly realize described welding power source system connecting method, carry out online according to the high-power output mode of multimachine, filament mariages pattern or crin mariages pattern many welding power source systems by described CAN bus.
Wherein, the high-power output mode of described multimachine is: anodal being connected as the positive pole of the source of welding current, negative pole is connected as source of welding current negative pole, specify a source of welding current as main frame, all the other sources of welding current are as slave, in the enterprising line parameter setting of main frame, the open and close of the slave source of welding current send to slave by host computer control by the CAN bus.
Wherein, described filament mariages pattern is: two sources of welding current respectively as the host power supply of double wire welding with from electromechanical source, in the enterprising line parameter setting of main frame, are sent to slave by the CAN bus after parameter sets up.
Wherein, described crin mariages pattern is: many power-supply systems adopt the mode of N+N (N 〉=2) to realize the welding of crin mariages by CAN bus Collaborative Control, in this pattern, the positive pole of N platform power-supply system is connected, negative pole is connected, host power supply as double wire welding, the positive pole of other N platform power-supply system is connected, minus earth, as double wire welding from electromechanical source, the setting of all source of welding current output parameters is completed by a main frame welding power source system, and sends to other welding power source system by the CAN bus.
The embodiment of the present invention compared with prior art, beneficial effect is:
The present invention adopts DSP and ARM dual chip control circuit, has realized multiple welding manner on a power-supply system;
The present invention programmes by digitizing, realizes different external characteristics outputs in the situation that do not change the power supply hardware circuit, thereby satisfies different welding method technological requirements;
The present invention has realized large power supply output easily by the on-line working of many power-supply systems;
The present invention has realized filament double wire welding and crin double wire welding, particularly by many power-supply systems of CAN bussing technique Collaborative Control, has realized the crin mariages high-speed welding of 2+2 or N+N.
Description of drawings
Fig. 1 is modularization all-digital intelligent welding power source system block scheme of the present invention;
Fig. 2 is the block diagram of system of the high-power output multimachine of the present invention pattern;
Fig. 3 a, Fig. 3 b are the slave DSP control flow charts of the high-power output multimachine of the present invention bond pattern, and wherein Fig. 3 a is main frame DSP control flow chart, and Fig. 3 b is main frame DSP control flow chart;
Fig. 4 is the block diagram of system of filament double wire welding pattern of the present invention;
Fig. 6 is the block diagram of system of crin mariages high-speed welding pattern of the present invention;
Fig. 7 a-Fig. 7 c is that the present invention is as the slave DSP control flow chart of crin mariages pattern high-speed welding pattern, wherein Fig. 7 a is the DSP control flow chart of the power supply A of crin mariages pattern, the DSP control flow chart of the power supply A1 of Fig. 7 b crin mariages pattern, the DSP control flow chart of the power supply B1/B2 of Fig. 7 c crin mariages pattern.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, modularization all-digital intelligent welding power source system comprises main circuit 101, DSP power supply master control borad 102, ARM man-machine interface board 103, IGBT drive plate 104 and realizes that CAN bus 105 5 parts of the online co-ordination of multimachine form.Main circuit is connected to form successively by input rectifying module, input filter module, soft-switching inversion module, high-frequency transformer, output rectification module and output filtering module, and the input rectifying module is connected with three-phase alternating-current supply, and the output filtering module is connected with load; Power supply master control borad based on DSP mainly comprises DSP basic circuit, primary current sample circuit, output current/voltage sampling circuit, I/O interface circuit, holding circuit, CAN bus interface circuit, RS485 interface circuit etc.; Man-machine interface board based on ARM mainly comprises ARM basic circuit, LCD and keyboard interface circuit (or touch screen interface circuit), RS485 interface circuit, RS232 interface circuit etc.; The IGBT driving circuit mainly comprises the driving circuit that 4 tunnel isolation+24V direct supply, 4 route optocoupler TLP250 form etc.; Adopt the serial communication of RS485 agreement between described DSP power supply master control borad and ARM man-machine interface board, dsp chip adopts the TMS320LF2812 of TI company, and the ARM chip adopts the LPC2119 of PHILIPS Co..
Principle of work:
The primary current sample circuit is delivered to the DSP master control borad by mutual inductor (or current Hall sensor) with high-frequency transformer primary current detection signal, delivers to the ADC pin of dsp chip through the signal conditioning circuit of DSP master control borad; Output current/voltage sampling circuit gathers welding machine output current/voltage signal by the current/voltage Hall element and send the DSP master control borad, delivers to the ADC pin of dsp chip through the signal conditioning circuit of DSP master control borad; Dsp chip is according to the electric current, voltage signal and the welding machine setting that gather, complete corresponding closed loop control algorithm, produce the phase-shift PWM waveform, control the dutycycle of the IGBT power model in the soft-switching inversion main circuit through the IGBT driving circuit, and finally realize desired generator characteristic output.In the situation that many power supply collaborative works, the DSP master control borad can communicate by its CAN bus communication interface and other power supplys, to realize the Collaborative Control of whole system.Wherein, transplant μ C/OS-II embedded OS in the ARM chip, realized more friendly man-machine interface; Described dsp chip adopts the high-speed digital signal process chip that is integrated with the CAN communication interface modules, as the TMS320LF2812 of TI company; Described ARM chip adopts 32 ARM chips low in energy consumption of integrated CAN, RS232, the affluent resources such as ADC, GPIO, as the LPC2119 of PHILIPS Co..
ARM man-machine interface control panel has LCD display interface and keyboard interface circuit (or touch screen interface circuit), can realize the man-machine communication, and realize and the communicating by letter of DSP master control borad by the RS485 communication interface, the setting of welding machine parameter is sent to the DSP master control borad, and receive the real-time welding parameter value that the DSP master control borad sends, and show on liquid crystal display.
As shown in Fig. 2, Fig. 3 a, Fig. 3 b, in order to realize the high-power output of multimachine, the output connected mode of many power-supply systems is: anodal being connected as the positive pole of the source of welding current, negative pole is connected as source of welding current negative pole; Coordinate to control in order to realize multimachine, only need power-supply system A as main frame, power-supply system A1, A2 etc. are as slave, in the enterprising line parameter setting of power-supply system A, send to A1, A2 etc. by the CAN bus after parameter sets up, the open and close of all power-supply systems all send to slave by host computer control by the CAN bus.
As shown in Figure 4, in order to realize the filament double wire welding, respectively with two power-supply systems as the primary power of double wire welding with from power supply, in the enterprising line parameter setting of main frame, parameter sends to slave by the CAN bus after setting up.
As shown in Figure 6, in order to realize the high-speed welding of crin mariages, the output connected mode of many power supplys is: the positive pole of power supply A and A1 is connected, negative pole is connected, host power supply as crin mariages high-speed welding, the positive pole of power-supply system B1 and B2 is connected, and negative pole is connected, as crin mariages high-speed welding from electromechanical source; For realizing multimachine coordination control, only need the main frame as operation control with power supply A, other power supply all conduct operates the slave of controlling, and in the enterprising line parameter setting of main frame, sends to other slaves by the CAN bus after parameter sets up.
Fig. 7 a, Fig. 7 b, Fig. 7 c have provided the crin Double Wire Welding system chart that is comprised of the 2+2 mode and the DSP control flow chart of each power supply.As seen from the figure, when pressing start button on the power supply A as main frame, main frame is notified other slaves by the CAN bus immediately, all power-supply systems enter simultaneously normal welding and control, be peak point current as the power supply A/A1 of Double Wire Welding primary power output this moment, and power supply B1/B2 exports background current; After the peak value of power supply A/A1 finished, power supply A sent switching signal to power supply B1/B2, and after this power supply A/A1 enters background current and controls the stage, and power supply B1/B2 enters peak point current and controls the stage; Power supply A/A1 controls the stage in the background current time to the rear peak point current that automatically transfers to, and power supply B1/B2 transfers the base value stage in peak current time to automatically to rear; Power supply A/A1 sends switching signal by power supply A to power supply B1/B2 again after the peak point current control time arrives, make power supply B1/B2 transfer peak phase to by the base value stage again.So circulation, both guaranteed that the signal of primary power one side (power supply A/A1) was synchronous, guaranteed that again power supply and the power pulse output phase from power supply on the primary power differs 180 °.After welding finished, main frame sent stop signal to other power supplys, and whole system stops output after receiving stop signal.
The welding manner that has proposed first to realize in multimode Collaborative Control mode the crin mariages of the present invention, compare with single arc welding technology, it is a kind of high efficiency welding manner that the crin Double Wire Welding is done, because two electric arcs burn on a molten bath jointly, not only improved total sweating heat input, and changed the characteristics that heat distributes, can effectively avoid the number of drawbacks such as undercut when carrying out High Speed Welding, speed of welding and production efficiency can be greatly improved, and high-quality weldquality attractive in appearance can be obtained.Simultaneously, compare with the filament Double Wire Welding, because system's output power is larger, deposition efficiency is higher, is particularly suitable for the high-speed welding of thick macrostructure spare, as: shipbuilding, welded tube, boiler etc.
The above is only preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. a connecting method of realizing welding power source system, is characterized in that, carries out online according to the high-power output mode of multimachine, filament mariages pattern or crin mariages pattern many welding power source systems by the CAN bus; The high-power output mode of described multimachine is: anodal being connected as the positive pole of the source of welding current, negative pole is connected as source of welding current negative pole, specify a source of welding current as main frame, all the other sources of welding current are as slave, in the enterprising line parameter setting of main frame, the open and close of the slave source of welding current send to slave by host computer control by the CAN bus.
2. the connecting method of welding power source system as claimed in claim 1, it is characterized in that, described filament mariages pattern is: with two sources of welding current respectively as the host power supply of double wire welding with from electromechanical source, in the enterprising line parameter setting of main frame, after setting up, parameter sends to slave by the CAN bus.
3. the connecting method of welding power source system as claimed in claim 1, it is characterized in that, described crin mariages pattern is: many power-supply systems adopt the mode of N+N (N 〉=2) to realize the welding of crin mariages by CAN bus Collaborative Control, in this pattern, the positive pole of N platform power-supply system is connected, negative pole is connected, host power supply as double wire welding, the positive pole of other N platform power-supply system is connected, minus earth, as double wire welding from electromechanical source, the setting of all source of welding current output parameters is completed by a main frame welding power source system, and send to other welding power source system by the CAN bus.
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| CN103480944A (en) * | 2013-09-02 | 2014-01-01 | 华南理工大学 | Large-power dual-wire pulse MIG (metal-inert gas welding) power supply digital man-machine interactive system |
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| CN102211239A (en) * | 2011-04-15 | 2011-10-12 | 南通三九焊接机器制造有限公司 | Digital signal processor (DSP)-based digital inversion welding power supply control system |
| CN102922091B (en) * | 2012-11-26 | 2014-12-10 | 甘肃西柴动力机电制造有限公司 | Digitally-controlled multifunctional inverted arc welding machine |
| CN103036437B (en) * | 2012-12-11 | 2015-03-11 | 航天科工深圳（集团）有限公司 | Distribution network terminal power supply device |
| CN104777833B (en) * | 2014-08-14 | 2018-07-27 | 北京中科涌泉科技发展有限公司 | Unmanned boat onboard control system based on ARM and dsp processor |
| CN104901561A (en) * | 2015-06-08 | 2015-09-09 | 国家电网公司 | Intelligent power supply for conductive plate repair |
| CN106425029B (en) * | 2016-10-31 | 2019-05-10 | 南京力仕达焊接科技有限公司 | A kind of battery type welding machine |
| US20180304393A1 (en) * | 2017-04-21 | 2018-10-25 | Illinois Tool Works Inc. | Welding Type Power Supply With Phase Shift Double Forward Converter |
| US10668551B2 (en) | 2017-12-21 | 2020-06-02 | Lincoln Global, Inc. | High reliability modular welding power supply system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1811639A (en) * | 2006-02-21 | 2006-08-02 | 上海威特力焊接设备制造有限公司 | Welding work field coordinated management system based on CAN bus |
| CN101480747A (en) * | 2008-12-02 | 2009-07-15 | 上海沪工电焊机制造有限公司 | Double-wire bonding control method based on CAN bus |
| CN101791733B (en) * | 2009-10-31 | 2012-05-30 | 华南理工大学 | Aluminium alloy twin-wire dipulse welding method and welding power supply thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103480944A (en) * | 2013-09-02 | 2014-01-01 | 华南理工大学 | Large-power dual-wire pulse MIG (metal-inert gas welding) power supply digital man-machine interactive system |
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Address after: 510000 building 15, 100 Hall of martyrs Road, Guangzhou, Guangdong Patentee after: Institute of intelligent manufacturing, Guangdong Academy of Sciences Address before: 510000 building 15, 100 Hall of martyrs Road, Guangzhou, Guangdong Patentee before: GUANGDONG INSTITUTE OF INTELLIGENT MANUFACTURING |