CN201128041Y - Digital submerged arc welding machine control system - Google Patents
Digital submerged arc welding machine control system Download PDFInfo
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- CN201128041Y CN201128041Y CNU2007201985186U CN200720198518U CN201128041Y CN 201128041 Y CN201128041 Y CN 201128041Y CN U2007201985186 U CNU2007201985186 U CN U2007201985186U CN 200720198518 U CN200720198518 U CN 200720198518U CN 201128041 Y CN201128041 Y CN 201128041Y
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Abstract
The utility model relates to a control system of a digital submerged arc welding machine, which comprises a voltage, current and speed sampling module, a parameter preset module used for setting a system parameter, a switching value input module, a singlechip control system module, a display module, a pulse-width modulation module used for generating a pulse-width modulation signal and driving a wire feed motor, the wire feed motor used for changing the rotating speed according to the pulse-width of the pulse-width modulation signal, a programmable pulse collector module used for generating a pulse signal and outputting the pulse signal to a host machine power supply used for outputting current under the control of a programmable pulse signal, wherein, the voltage, current and speed sampling module is used for transmitting a sampling result to the singlechip control system module; the switching value input module is used for setting four states of start, wire feed, wire extraction, and rapid stop; the singlechip control system module uses a high-performance singlechip as a control core and is used for performing the digital control; the display module is used for displaying the relative parameters. The control system not only causes the system to be optimized, but also can realize the precise control on the wielding process.
Description
Technical field
The utility model relates to the electric welding machine field, relates in particular to the digital submerged arc welding machine control system.
Background technology
Automatic submerged-arc welding machine is to make arc welding break away from the welding method that mechanical automation is moved towards in manual operations in the world the earliest, and the history in existing more than 60 year is introduced existing half a century of China so far.Because it adopts high welding current, electric arc to be subjected to slag to protect, do not have when welding arc light etc. mutually; not only production efficiency and welding quality height; and welder's work situation might as well, become the main welding method of shipbuilding, station boiler, chemical industry equipment, bridge and various steel pipe and steel construction textile industry.
The control system of automatic submerged arc welding machine is the core component of automatic submerged arc welding machine, and the welding operation controller is the cardiac component of control system, realizes the automatic control of butt welding machine.During work, produce the work arc voltage between welding wire and the workpiece, when arc voltage had change for a certain reason, wire feed rate will change automatically forced arc voltage to be returned to original numerical value, plays the effect of stable arc voltage.The quality of welding operation controller performance is the quality of influencer's welding directly.
Existing submerged arc welding machine generally all adopts the welding machine of simulation control, adopts discrete components and parts such as operational amplifier, resistance, electric capacity to constitute in the hardwire mode, is difficult to realize high accuracy, the more advanced complicated control algolithm of performance.
The utility model content
The utility model provides a kind of digital submerged arc welding machine control system for solving the existing technological deficiency that the submerged arc welding machine operational precision is not high, the control algolithm precision is relatively poor.
A kind of digital submerged arc welding machine control system comprises:
Voltage, electric current, speed sampling module, electric current, voltage, the speed parameter of the welding process that is used for sampling, and give the single-chip computer control system module with result transmission;
The preset parameter module is used for being provided with the relevant system parameters of welding process submerged arc welding machine;
Switching input module is used for being provided with " startup ", " wire feed ", " reeling off raw silk from cocoons " and " suddenly stopping " one of four states;
The single-chip computer control system module, is used for carrying out digital control to generator characteristic, wire feed rate, speed of welding and welding process as the control core with high performance single-chip microcomputer;
Display module is used for the relevant parameter of welding process is shown;
Pulse width modulation module is used to produce pulse-width signal, and will be used to drive wire feeding motor after its filtering, the amplification;
Wire feeding motor is used for changing according to the pulse width of pulse-width signal self rotating speed;
Programmable pulse collector module is used to produce pulse signal, and with exporting to host power supply after this signal filtering, the amplification, as the given signal of electric current;
The main frame current module is used for output current under the control of programmable pulse signal.
Wherein said voltage, electric current, speed sampling module are hall devices.
Wherein this system also comprises amplification module, is used for that hall device is obtained sampled signal and amplifies, and be transferred to the A/D modular converter; The A/D modular converter is used for process amplification module amplified analog signal is converted to data signal, and is transferred to single-chip microcomputer.
The utility model is owing to adopted single-chip microcomputer to carry out the control of exact figure parameter, and therefore compared with prior art, its control to the submerged arc welding machine operating process is more accurate, and the performance of its system self also improves greatly.
Description of drawings
Fig. 1 is the single-chip computer control system structure chart;
Fig. 2 is a single-chip microcomputer closed-loop control schematic diagram.
The specific embodiment
Below in conjunction with a specific embodiment the utility model is done a detailed description, as shown in Figure 1, this digital submerged arc welding machine control system comprises:
Voltage, electric current, speed sampling module, electric current, voltage, the speed parameter of the welding process that is used for sampling, and give the single-chip computer control system module with result transmission;
The preset parameter module is used for being provided with the relevant system parameters of welding process submerged arc welding machine;
Switching input module is used for being provided with " startup ", " wire feed ", " reeling off raw silk from cocoons " and " suddenly stopping " one of four states;
The single-chip computer control system module, is used for carrying out digital control to generator characteristic, wire feed rate, speed of welding and welding process as the control core with high performance single-chip microcomputer;
Display module is used for the relevant parameter of welding process is shown;
Pulse width modulation module (PWM) is used to produce pulse-width signal, and will be used to drive wire feeding motor after its filtering, the amplification;
Wire feeding motor is used for changing according to the pulse width of pulse-width signal self rotating speed;
Programmable pulse collector module (PPG) is used to produce pulse signal, and with exporting to host power supply after this signal filtering, the amplification, as the given signal of electric current;
The main frame current module is used for output current under the control of programmable pulse signal.
Wherein this digital submerged arc welding machine control system is that core constitutes with high performance MB89F202 single-chip microcomputer, the input voltage of this single-chip microcomputer is 5V, digital control to power supply characteristic, wire feed rate, speed of welding and welding process implementation, strengthened its reliability and maintainability greatly.In this system, described voltage, electric current, speed sampling module are hall devices, are used for parameters such as electric current, voltage are sampled; This system also comprises amplification module, is used for that hall device is obtained sampled signal and amplifies, and be transferred to the A/D modular converter; The A/D modular converter is used for process amplification module amplified analog signal is converted to data signal, and is transferred to single-chip microcomputer.
On the one hand, constantly sample welding current, voltage of single-chip microcomputer in the welding process by the feedback of uniting of electric current and voltage, is regulated power supply output external characteristic and dynamic characteristic, controls output power of power supply to satisfy the requirement of different welding methods; On the other hand,,, regulate little vehicle speed by set-point simultaneously, and finish functions such as the flow process control of welding process and parameter setting, demonstrations to obtain accurate welding job point control by executed arc voltage feedback control wire feed rate.
Submerged-arc welding inverter single-chip microcomputer closed-loop control system as shown in Figure 2, because single-chip microcomputer can only receive and handle digital quantity, can not receive and the treatment of simulated amount, the electric current that samples at first will carry out analog-to-digital conversion by the A/D modular converter behind amplification module, with analog signal conversion is data signal, could import single-chip microcomputer then; Single-chip microcomputer compares and takes corresponding computing with the set-point that has been stored in the internal storage location after receiving this data signal, control parameter (digital quantity) output that will calculate again, this control parameter is sent into pulse width modulating chip after through the D/A conversion, analog voltage signal is transformed into the pulse width signal of two-way non-overlapping copies.
The output characteristics that the utility model adopts PWM-type control (PWM) mode to regulate submerged arc welding electric power.By the welding current negative-feedback, and take certain control algolithm, control the size of output pulse width in real time, output current value and electric current set-point are reached unanimity, thereby realize the constant current output characteristics.When just thinking that in like manner arc voltage carried out negative-feedback, the output constant-voltage characteristic.If when negative-feedback and Current Negative Three-Point Capacitance are pressed in power taking by a certain percentage, diminish gradually along with the increase of output current with regard to making pulse width, output voltage also descends thereupon, thereby obtains the external characteristics of dropping characteristic or any slope.
Claims (3)
1, a kind of digital submerged arc welding machine control system is characterized in that, described control system comprises:
Voltage, electric current, speed sampling module, electric current, voltage, the speed parameter of the welding process that is used for sampling, and give the single-chip computer control system module with result transmission;
The preset parameter module is used for being provided with the relevant system parameters of welding process submerged arc welding machine;
Switching input module is used for being provided with " startup ", " wire feed ", " reeling off raw silk from cocoons " and " suddenly stopping " one of four states;
The single-chip computer control system module, is used for carrying out digital control to generator characteristic, wire feed rate, speed of welding and welding process as the control core with the high-performance single-chip microcomputer;
Display module is used for the relevant parameter of welding process is shown;
Pulse width modulation module is used to produce pulse-width signal, and will be used to drive wire feeding motor after its filtering, the amplification;
Wire feeding motor is used for changing according to the pulse width of pulse-width signal self rotating speed;
Programmable pulse collector module is used to produce pulse signal, and with exporting to host power supply after this signal filtering, the amplification, as the given signal of electric current;
The main frame current module is used for output current under the control of programmable pulse signal.
2, a kind of digital submerged arc welding machine control system as claimed in claim 1 is characterized in that described voltage, electric current, speed sampling module are hall devices.
3, a kind of digital submerged arc welding machine control system as claimed in claim 2 is characterized in that this system also comprises amplification module, is used for that hall device is obtained sampled signal and amplifies, and be transferred to the A/D modular converter; The A/D modular converter is used for process amplification module amplified analog signal is converted to data signal, and is transferred to single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201985186U CN201128041Y (en) | 2007-11-28 | 2007-11-28 | Digital submerged arc welding machine control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201985186U CN201128041Y (en) | 2007-11-28 | 2007-11-28 | Digital submerged arc welding machine control system |
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| Publication Number | Publication Date |
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| CN201128041Y true CN201128041Y (en) | 2008-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007201985186U Expired - Lifetime CN201128041Y (en) | 2007-11-28 | 2007-11-28 | Digital submerged arc welding machine control system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947684A (en) * | 2010-09-03 | 2011-01-19 | 成都伟鼎科技有限公司 | Automatic welding method for realizing drop properties of submerged arc welder by field digital preset mode |
| CN103386538A (en) * | 2013-07-17 | 2013-11-13 | 沈阳大学 | PLC (Programmable Logic Controller)-controlled wire filling controller during pulsed tungsten inert gas welding |
| CN108971702A (en) * | 2018-09-29 | 2018-12-11 | 重庆固高科技长江研究院有限公司 | A kind of welding robot power control method and control system |
| 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 |
| CN110995107A (en) * | 2019-12-30 | 2020-04-10 | 元力(天津)科技有限公司 | Motor control method and system based on numerical tracking |
-
2007
- 2007-11-28 CN CNU2007201985186U patent/CN201128041Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947684A (en) * | 2010-09-03 | 2011-01-19 | 成都伟鼎科技有限公司 | Automatic welding method for realizing drop properties of submerged arc welder by field digital preset mode |
| CN101947684B (en) * | 2010-09-03 | 2012-09-05 | 成都伟鼎科技有限公司 | Automatic welding method for realizing drop properties of submerged arc welder by field digital preset mode |
| CN103386538A (en) * | 2013-07-17 | 2013-11-13 | 沈阳大学 | PLC (Programmable Logic Controller)-controlled wire filling controller during pulsed tungsten inert gas welding |
| CN108971702A (en) * | 2018-09-29 | 2018-12-11 | 重庆固高科技长江研究院有限公司 | A kind of welding robot power control method and control system |
| 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 |
| CN110995107A (en) * | 2019-12-30 | 2020-04-10 | 元力(天津)科技有限公司 | Motor control method and system based on numerical tracking |
| CN110995107B (en) * | 2019-12-30 | 2024-02-02 | 元力(天津)科技有限公司 | Motor control method and system based on numerical tracking |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081008 |