Pulse arc length adjustment method, device and welding system

Abstract

The present application provides a pulse arc length adjustment method, device, and welding system. The method includes: obtaining a first current in a first pulse cycle; the first current is the actual welding current obtained by the Nth detection in the first pulse cycle; if the first current is a preset short-circuit initial current, obtaining a second current; the second current is the maximum current in the short-circuit rising phase in the first pulse cycle; adjusting the duration of the second pulse cycle based on the relationship between the second current and the first preset current and the second preset current to adjust the pulse arc length in the second pulse cycle; the first preset current and the second preset current are both greater than the preset base current and less than the preset peak current; the first preset current is less than the second preset current; the second pulse cycle is the next pulse cycle after the first pulse cycle. Through this method, the pulse arc length can be adaptively adjusted so that the pulse arc length during the welding process remains in a relatively appropriate state, thereby improving welding efficiency.

Description

Technical Field

[0001] The present application relates to the field of welding technology, and in particular to a pulse arc length adjustment method, device and welding system. Background Art

[0002] When pulse welding is performed with gas metal arc welding (GMAW), a long pulse arc length (also known as welding arc length or arc length) can easily lead to undercutting defects. Short pulse arc lengths, on the other hand, can easily produce significant weld spatter and even cause problems like wire tipping and arc breakage. Furthermore, pulse welding has shown that, under identical welding parameters, the pulse arc length can vary significantly for workpieces with different weld joint configurations. Even different proportions of shielding gas components can lead to variations in pulse arc length. Therefore, adjusting the pulse arc length is crucial for pulse welding.

[0003] Currently, operators typically manually adjust the welding voltage to adjust the pulse arc length based on their experience and the amount of weld spatter. If weld spatter is high, the welding voltage is increased; if no weld spatter is present, the voltage is decreased. If weld spatter is present but minimal, the arc length is appropriate and no adjustment is required. However, in actual welding, operator experience can be highly uncertain, affecting the accuracy of pulse arc length adjustment and, in turn, the efficiency of subsequent pulse welding. Summary of the Invention

[0004] In order to improve the accuracy of pulse arc length adjustment and thus improve the efficiency of pulse welding, the present application provides a pulse arc length adjustment method, device and welding system.

[0005] In the first aspect, an embodiment of the present application provides a pulse arc length adjustment method, which includes: obtaining a first current in a first pulse cycle; the first pulse cycle is any pulse cycle in pulse welding; the first current is the actual welding current obtained by the Nth detection in the first pulse cycle, N=1, 2,..., M-1, M is the total number of times the actual welding current is detected and obtained in the first pulse cycle, and M is a positive integer; if the first current is a preset short-circuit initial current, obtaining a second current; the second current is the maximum current in the short-circuit rising phase in the first pulse cycle; according to the relationship between the second current and the first preset current and the second preset current, adjusting the duration of the second pulse cycle to adjust the pulse arc length in the second pulse cycle; the first preset current and the second preset current are both greater than the preset base current, and both are less than the preset peak current; the first preset current is less than the second preset current; the second pulse cycle is the next pulse cycle of the first pulse cycle.

[0006] In the second aspect, an embodiment of the present application also provides a pulse arc length adjustment device, which includes: a first acquisition module, used to obtain a first current in a first pulse cycle; the first pulse cycle is any pulse cycle in pulse welding; the first current is the actual welding current obtained by the Nth detection in the first pulse cycle, N = 1, 2, ..., M-1, M is the total number of times the actual welding current is detected and obtained in the first pulse cycle, and M is a positive integer; a second acquisition module, used to obtain a second current if the first current is a preset short-circuit initial current; the second current is the maximum current in the short-circuit rising phase of the first pulse cycle; an adjustment module, used to adjust the duration of the second pulse cycle according to the relationship between the second current and the first preset current and the second preset current, so as to adjust the pulse arc length in the second pulse cycle; the first preset current and the second preset current are both greater than the preset base current, and both less than the preset peak current; the first preset current is less than the second preset current; the second pulse cycle is the next pulse cycle of the first pulse cycle.

[0007] In a third aspect, an embodiment of the present application further provides a welding system, which includes: a power supply device and a control device connected to each other; the power supply device is used to provide welding current and welding voltage to the welding system during pulse welding; the control device is used to perform the following operations: obtain a first current in a first pulse cycle; the first pulse cycle is any pulse cycle in pulse welding; the first current is the actual welding current obtained by the Nth detection in the first pulse cycle, N=1, 2,..., M-1, M is the total number of times the actual welding current is detected in the first pulse cycle, and M is a positive integer; if the first current is a preset short-circuit initial current, obtain a second current; the second current is the maximum current in the short-circuit rising phase in the first pulse cycle; according to the relationship between the second current and the first preset current and the second preset current, output a control signal so that the power supply device adjusts the duration of the second pulse cycle according to the control signal to adjust the pulse arc length in the second pulse cycle; the first preset current and the second preset current are both greater than the preset base current and less than the preset peak current; the first preset current is less than the second preset current; the second pulse cycle is the next pulse cycle of the first pulse cycle.

[0008] In a fourth aspect, an embodiment of the present application further provides a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the pulse arc length adjustment method of the first aspect mentioned above when executing the computer program.

[0009] In a fifth aspect, an embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for executing the pulse arc length adjustment method of the first aspect.

[0010] Embodiments of the present application provide a pulse arc length adjustment method, device, and welding system. The method, device, or system provided herein can obtain the actual welding current in a first pulse cycle, and determine whether the actual welding current detected in the first pulse cycle is the same as the preset short-circuit initial current. When it is determined that the actual welding current is the same as the preset short-circuit initial current, the maximum current in the short-circuit rising phase can be obtained and determined as the second current. Subsequently, the duration of the second pulse cycle can be adjusted based on the relationship between the second current and the first preset current and the second preset current, thereby adaptively adjusting the pulse arc length in the second pulse cycle. This allows the pulse arc length to remain at a relatively suitable state during the welding process, thereby improving welding efficiency.

[0011] In addition, when it is determined that the actual welding current that is the same as the preset short-circuit initial current is not detected in the first pulse cycle, the duration of the second pulse cycle can be increased so that the duration of the second pulse cycle is greater than the duration of the first pulse cycle, and then the pulse arc length of the second pulse cycle is adaptively adjusted so that the pulse arc length during the welding process remains in a more appropriate state, thereby improving the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0013] Figure 1 A flow chart of a pulse arc length adjustment method provided in an embodiment of the present application.

[0014] Figure 2 A schematic diagram of the waveform of the welding current in pulse welding provided in an embodiment of the present application.

[0015] Figure 3 This is a structural block diagram of a pulse arc length adjustment device provided in an embodiment of the present application.

[0016] Figure 4 This is a structural block diagram of a welding system provided in an embodiment of the present application.

[0017] Figure 5 A structural block diagram of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0018] The present application will be further described in detail below through the accompanying drawings and examples, through which the features and advantages of the present application will become more clear and distinct.

[0019] The word "exemplary" is used exclusively herein to mean "serving as an example, example, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0020] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0021] See also Figure 1 , Figure 1 The flow chart of a pulse arc length adjustment method provided in an embodiment of the present application is shown. The method can be applied to a control device, for example, the control device can be a control module in a welding power supply. Figure 1 As shown, the method may include the following steps:

[0022] Step S101: Acquire a first current in a first pulse cycle, wherein the first current is an actual welding current obtained by the Nth detection in the first pulse cycle.

[0023] Wherein, N=1, 2, ..., M-1, M is the total number of times the actual welding current is detected and obtained in the first pulse cycle, and M is a positive integer.

[0024] During the pulse welding process, the control device can output a pulse control signal to the power supply device to control the power supply device to output the welding current and welding voltage in a pulsed manner, thereby achieving pulse welding. It should be noted that during the pulse welding process, the control device can be used according to the present application. Figure 1 The method shown adjusts the pulse arc length according to the first current in each pulse cycle. Alternatively, the pulse arc length can be periodically adjusted according to the first current in the current pulse cycle after every few pulse cycles according to a preset adjustment period. When adjusting the pulse arc length according to any of the aforementioned methods, the execution steps for adjusting the pulse arc length according to each pulse cycle are consistent. Based on this, the following embodiments of the present application take any one of the pulse cycles as an example to illustrate the embodiments of the pulse arc length adjustment method provided by the present application. It can be seen that the first pulse cycle can be any pulse cycle in pulse welding.

[0025] Optionally, the first current may be the actual welding current obtained by the Nth detection in the first pulse cycle. Here, N = 1, 2, ..., M-1, where M is the total number of times the actual welding current is detected and obtained in the first pulse cycle, and M is a positive integer. That is, after the first pulse cycle begins, the actual welding current obtained by the first detection in the first pulse cycle may be determined as the first current. If the first current differs from the preset short-circuit initial current, the first current is re-obtained, i.e., the actual welding current obtained by the second detection in the first pulse cycle is determined as the first current, and so on. For details, please refer to the subsequent embodiments and will not be described in detail here.

[0026] In one possible implementation, after the first pulse cycle begins, the control device can detect and obtain the actual welding current during the first pulse cycle in real time, thereby obtaining the first current. Furthermore, the control device can detect and obtain the actual welding current during the first pulse cycle from the power supply device in real time, thereby obtaining the first current.

[0027] In one possible implementation, after the first pulse cycle begins, the control device may periodically detect and obtain the actual welding current during the first pulse cycle according to a preset detection and acquisition cycle, thereby obtaining the first current. The preset detection and acquisition cycle can be set based on the requirements of the actual application scenario. Furthermore, the control device may periodically detect and obtain the actual welding current during the first pulse cycle from the power supply device, thereby obtaining the first current.

[0028] In one possible implementation, before the control device executes step S101 or before starting welding, the method may further include: determining that the duration of the first pulse cycle is a preset duration. The value of the preset duration can be set according to the requirements of the actual application scenario.

[0029] In a possible implementation, before executing step S101 or before starting welding, the control device may also pre-set other initial welding parameters, such as initial welding current, initial welding voltage, etc. This application does not limit this.

[0030] Step S102: If the first current is a preset short-circuit initial current, obtain a second current.

[0031] The preset short-circuit initial current can be set according to the needs of the actual application scenario. Optionally, before welding begins, the preset short-circuit initial current can be pre-stored in the control device (or other storage device connected to the control device) and directly read from the control device (or other storage device connected to the control device) during step S102. The second current is the maximum current in the short-circuit rising phase of the first pulse cycle.

[0032] After the control device obtains the actual welding current from the first detection in the first pulse cycle, the actual welding current obtained from this detection may be determined as the first current. If the first current is the preset short-circuit initial current, that is, the first current is equal to the preset short-circuit initial current, the actual welding current obtained from the second, third, ..., Mth detections in the first pulse cycle is no longer determined as the first current, and the step of obtaining the second current is performed instead.

[0033] In one possible implementation, after the control device determines that the first current is equal to the preset short-circuit initial current, the maximum current (i.e., the maximum actual welding current) in the short-circuit rising phase of the actual welding current obtained by subsequent detection in the first pulse cycle can be determined as the second current, thereby obtaining the second current.

[0034] Step S103: adjusting the duration of the second pulse period according to the relationship between the second current and the first preset current and the second preset current, so as to adjust the pulse arc length in the second pulse period.

[0035] The first preset current and the second preset current are both greater than the preset base current and less than the preset peak current. The first preset current is less than the second preset current. The second pulse period is the next pulse period after the first pulse period.

[0036] Optionally, the first preset current, the second preset current, the preset base current, and the preset peak current can all be set according to the requirements of the actual application scenario. Optionally, the first preset current, the second preset current, the preset base current, and the preset peak current can all be pre-stored in the control device (or other storage device connected to the control device) before welding begins, and when executing step S103, they can be directly read from the control device (or other storage device connected to the control device).

[0037] According to the relationship between the second current and the first preset current and the second preset current, the duration of the second pulse period is adjusted to adjust the pulse arc length in the second pulse period. There are many implementation methods, for example:

[0038] In the first implementation, the second current is less than the first preset current, indicating that the pulse arc length in the first pulse cycle is longer and short circuits are less frequent. In this implementation, the duration of the second pulse cycle can be increased so that the duration of the second pulse cycle is greater than that of the first pulse cycle, thereby shortening the pulse arc length in the second pulse cycle. That is, the pulse arc length in the second pulse cycle is less than that in the first pulse cycle.

[0039] Optionally, increasing the duration of the second pulse period may be achieved in the following manner:

[0040] The first step is to determine the first duration according to the following first preset formula;

[0041] T1=T0+K1(I0-I2);

[0042] Among them, T1 represents the first duration; T0 represents the duration of the first pulse cycle; K1 represents the first adjustment coefficient, K1 is a constant greater than 0, and the value of K1 can be determined through experiments according to the needs of the actual application scenario; I0 represents the first preset current; I2 represents the second current.

[0043] The second step is to increase the duration of the second pulse cycle to the first duration.

[0044] That is, after determining the first duration, the control device may adjust the duration of the second pulse period to the first duration.

[0045] Optionally, the control device may adjust a control signal output to the power supply device so that the power supply device adjusts the duration of the second pulse period to the first duration according to the control signal.

[0046] In the second implementation, the second current is greater than the second preset current, indicating that the pulse arc length in the first pulse cycle is shorter and the short-circuit rising current is larger. In this implementation, the duration of the second pulse cycle can be reduced so that it is shorter than that of the first pulse cycle, thereby lengthening the arc length in the second pulse cycle. That is, the pulse arc length in the second pulse cycle is greater than that in the first pulse cycle.

[0047] Optionally, reducing the duration of the second pulse period can be achieved in the following manner:

[0048] The first step is to determine the second duration according to the following second preset formula;

[0049] T2=T0+K2(I3-I2);

[0050] Among them, T2 represents the second duration; T0 represents the duration of the first pulse cycle; K2 represents the second adjustment coefficient, K2 is a constant greater than 0, and the value of K2 can be determined through experiments according to the needs of the actual application scenario; I3 represents the second preset current; I2 represents the second current.

[0051] The second step is to reduce the duration of the second pulse period to the second duration.

[0052] That is, after determining the second duration, the control device may adjust the duration of the second pulse cycle to the second duration.

[0053] Optionally, the control device may adjust a control signal output to the power supply device so that the power supply device adjusts the duration of the second pulse period to the second duration according to the control signal.

[0054] In a third implementation, the second current is greater than or equal to the first preset current and less than or equal to the second preset current, indicating that the pulse arc length in the first pulse cycle is appropriate, neither too long nor too short. In this case, a slight short circuit occurs, and subsequent welding efficiency is high. In this implementation, the duration of the second pulse cycle is maintained at the same length as the first pulse cycle, that is, the duration of the second pulse cycle is equal to the duration of the first pulse cycle, and the duration of the second pulse cycle is not adjusted.

[0055] Optionally, the control device may output a control signal to the power supply device so that the power supply device maintains the duration of the second pulse period at the same duration of the first pulse period according to the control signal.

[0056] For example, see Figure 2 , Figure 2 This is a waveform diagram of the welding current in pulse welding provided in an embodiment of the present application. Figure 2 As shown, Figure 2 The horizontal axis represents time, and the vertical axis represents current. I0 can be the first preset current, I3 can be the second preset current, I1 can be the preset short-circuit initial current, and I2 can be the second current. Figure 2 It can be seen that Figure 2 The second current in the pulse cycle shown is greater than the first preset current and less than the second preset current, indicating that the pulse arc length in this pulse cycle is appropriate and there is no need to adjust the pulse arc length in the next pulse cycle, so there is no need to adjust the duration of the next pulse cycle.

[0057] Step S104: If the first current is different from the preset short-circuit initial current, update N to N+1; when N+1 is less than M, re-execute step S101 and subsequent steps; or, when N+1 is equal to M, execute step S105.

[0058] Step S105: Increase the duration of the second pulse cycle so that the duration of the second pulse cycle is greater than the duration of the first pulse cycle.

[0059] That is, if the actual welding current obtained for the first time during the first pulse cycle is determined as the first current and this first current differs from the preset short-circuit initial current, N needs to be updated to N+1, that is, N is updated to 2, and step S101 and subsequent steps are re-executed. Specifically, the actual welding current obtained for the second time during the first pulse cycle is determined as the first current. Then, if this first current is the preset short-circuit initial current, the second current is obtained, and step S103 is executed. Alternatively, if the actual welding current obtained for the second time during the first pulse cycle is determined as the first current and this first current is still different from the preset short-circuit initial current, N needs to be further updated to N+1, that is, N is updated to 3, and step S101 and subsequent steps are re-executed. Specifically, the actual welding current obtained for the third time during the first pulse cycle is determined as the first current. This process continues in this manner until the first current obtained for the current time is the preset short-circuit initial current, at which point the second current is obtained, and step S103 is executed. Alternatively, until the actual welding current obtained for the M-1th time in the first pulse cycle is determined as the first current, the first current is still different from the preset short-circuit initial current, and N is updated to N+1. When N+1 is equal to M, it is considered that all first currents obtained in the first pulse cycle are different from the preset short-circuit initial current, and the duration of the second pulse cycle is increased so that the duration of the second pulse cycle is greater than that of the first pulse cycle.

[0060] In one possible implementation, when all first currents obtained in the first pulse cycle are different from the preset short-circuit initial current, that is, after the actual welding currents obtained for the 1st, 2nd, 3rd, ..., M-1th time in the first pulse cycle are respectively determined as the first current, when the first current determined each time is different from the preset short-circuit initial current, or in other words, when no actual welding current identical to the preset short-circuit initial current is detected in the first pulse cycle, the duration of the second pulse cycle is increased so that the duration of the second pulse cycle is greater than that of the first pulse cycle. This can be implemented in the following manner:

[0061] The first step is to determine the third duration according to the following third preset formula;

[0062] T3=T0+K3*T0;

[0063] Among them, T3 represents the third duration; T0 represents the duration of the first pulse cycle; K3 represents the third adjustment coefficient, K3 is a constant greater than 0, and the value of K3 can be determined through experiments according to the needs of actual application scenarios.

[0064] The second step is to increase the duration of the second pulse period to the third duration.

[0065] That is, after determining the third duration, the control device may adjust the duration of the second pulse cycle to the third duration.

[0066] Optionally, the control device may adjust a control signal output to the power supply device so that the power supply device adjusts the duration of the second pulse period to a third duration according to the control signal.

[0067] The pulse arc length adjustment method provided in the embodiment of the present application can obtain the actual welding current in the first pulse cycle, and determine whether the actual welding current detected in the first pulse cycle is the same as the preset short-circuit initial current. After determining that the actual welding current the same as the preset short-circuit initial current is obtained, the maximum current in the short-circuit rising phase can be obtained, and the maximum current is determined as the second current. Thereafter, the duration of the second pulse cycle can be adjusted according to the relationship between the second current and the first preset current and the second preset current, thereby adaptively adjusting the pulse arc length in the second pulse cycle, so that the pulse arc length during the welding process remains in a more appropriate state, thereby improving welding efficiency.

[0068] In addition, when it is determined that the actual welding current that is the same as the preset short-circuit initial current is not detected in the first pulse cycle, the duration of the second pulse cycle can be increased so that the duration of the second pulse cycle is greater than the duration of the first pulse cycle, and then the pulse arc length of the second pulse cycle is adaptively adjusted so that the pulse arc length during the welding process remains in a more appropriate state, thereby improving the welding efficiency.

[0069] It is understandable that the above embodiments are merely examples and may be modified in actual implementation. Those skilled in the art may understand that any modification of the above embodiments without creative effort falls within the scope of protection of this application and will not be described in detail in the embodiments.

[0070] Based on the same inventive concept, the embodiments of the present application also provide a pulse arc length adjustment device and a welding system. Since the principles of the problems solved by the pulse arc length adjustment device and the welding system are similar to those of the aforementioned pulse arc length adjustment method, the implementation of the pulse arc length adjustment device and the welding system can refer to the implementation of the aforementioned pulse arc length adjustment method, and the repeated parts will not be repeated.

[0071] See also Figure 3 , Figure 3 This is a structural block diagram of a pulse arc length adjustment device provided in an embodiment of the present application. Figure 3 As shown, the pulse arc length adjustment device 300 may include: a first acquisition module 301, a second acquisition module 302 and an adjustment module 303.

[0072] The first acquisition module 301 can be used to obtain the first current in the first pulse cycle; the first pulse cycle is any pulse cycle in pulse welding; the first current is the actual welding current obtained by the Nth detection in the first pulse cycle, N = 1, 2, ..., M-1, M is the total number of times the actual welding current is detected and obtained in the first pulse cycle, and M is a positive integer.

[0073] The second acquisition module 302 may be configured to acquire a second current if the first current is a preset short-circuit initial current; the second current being a maximum current in a short-circuit rising phase in the first pulse cycle.

[0074] The adjustment module 303 can be used to adjust the duration of the second pulse period according to the relationship between the second current and the first preset current and the second preset current, so as to adjust the pulse arc length in the second pulse period; the first preset current and the second preset current are both greater than the preset base current and less than the preset peak current; the first preset current is less than the second preset current; the second pulse period is the next pulse period of the first pulse period.

[0075] In one possible implementation, the adjustment module 303 is used to adjust the duration of the second pulse cycle according to the relationship between the second current and the first preset current and the second preset current. Specifically, the adjustment module 303 is used to: if the second current is less than the first preset current, increase the duration of the second pulse cycle so that the duration of the second pulse cycle is greater than the duration of the first pulse cycle; or, if the second current is greater than the second preset current, reduce the duration of the second pulse cycle so that the duration of the second pulse cycle is less than the duration of the first pulse cycle; or, if the second current is greater than or equal to the first preset current and less than or equal to the second preset current, keep the duration of the second pulse cycle unchanged at the duration of the first pulse cycle.

[0076] In one possible implementation, the adjustment module 303 is used to increase the duration of the second pulse cycle, specifically: the adjustment module 303 is used to: determine the first duration according to the following first preset formula; T1=T0+K1(I0-I2); wherein, T1 represents the first duration; T0 represents the duration of the first pulse cycle; K1 represents the first adjustment coefficient, K1 is a constant greater than 0; I0 represents the first preset current; I2 represents the second current; and the duration of the second pulse cycle is increased to the first duration.

[0077] In one possible implementation, the adjustment module 303 is used to reduce the duration of the second pulse cycle, specifically: the adjustment module 303 is used to: determine the second duration according to the following second preset formula; T2=T0+K2(I3-I2); wherein, T2 represents the second duration; T0 represents the duration of the first pulse cycle; K2 represents the second adjustment coefficient, K2 is a constant greater than 0; I3 represents the second preset current; I2 represents the second current; reduce the duration of the second pulse cycle to the second duration.

[0078] In one possible implementation, the pulse arc length adjustment device may further include: a processing module, used to: if the first current is different from the preset short-circuit initial current, update N to N+1, and when N+1 is less than M, re-execute the step of obtaining the first current in the first pulse period and subsequent steps, until the obtained first current is the preset short-circuit initial current, and then execute the step of obtaining the second current and subsequent steps; or, when N+1 is equal to M, increase the duration of the second pulse period so that the duration of the second pulse period is greater than the duration of the first pulse period.

[0079] In one possible implementation, the processing module is used to increase the duration of the second pulse cycle, specifically: the processing module is used to: determine the third duration according to the following third preset formula; T3=T0+K3*T0; wherein, T3 represents the third duration; T0 represents the duration of the first pulse cycle; K3 represents the third adjustment coefficient, K3 is a constant greater than 0; and the duration of the second pulse cycle is increased to the third duration.

[0080] In a possible implementation, the pulse arc length adjustment device may further include a determination module configured to: before acquiring the first current in the first pulse period, determine that the duration of the first pulse period is a preset duration.

[0081] See also Figure 4 , Figure 4 This is a structural block diagram of a welding system provided in an embodiment of the present application. Figure 4 As shown, the welding system 400 may include a power supply device 401 and a control device 402 connected to each other. Alternatively, the welding system 400 may be a welding power supply. The power module of the welding power supply may be the power supply device 401, and the control module of the welding power supply may be the control device 402. Alternatively, the welding system may be a system that includes a welding power supply. This application is not limited to this.

[0082] The power supply device 401 is used to provide welding current and welding voltage to the welding system 400 during pulse welding.

[0083] The control device 402 is used to perform the following operations:

[0084] Obtaining a first current in a first pulse cycle; the first pulse cycle is any pulse cycle in pulse welding; the first current is an actual welding current obtained by the Nth detection in the first pulse cycle, where N=1, 2, ..., M-1, and M is a total number of times the actual welding current is detected in the first pulse cycle, and M is a positive integer;

[0085] If the first current is the preset short-circuit initial current, obtaining a second current; the second current is the maximum current in the short-circuit rising phase in the first pulse cycle;

[0086] According to the relationship between the second current and the first preset current and the second preset current, a control signal is output to enable the power supply device to adjust the duration of the second pulse cycle according to the control signal to adjust the pulse arc length in the second pulse cycle; the first preset current and the second preset current are both greater than the preset base current and less than the preset peak current; the first preset current is less than the second preset current; the second pulse cycle is the next pulse cycle of the first pulse cycle.

[0087] Optionally, the control device 402 may include the pulse arc length adjustment device 300. Optionally, the control device 402 may also be the pulse arc length adjustment device 300. The control device 402 may implement the same functions as the pulse arc length adjustment device 300. For details, please refer to the contents of the aforementioned embodiment and will not be repeated here.

[0088] See also Figure 5 , Figure 5 This is a structural block diagram of a computer device provided in an embodiment of the present application. Figure 5 As shown, the computer device 500 may include a processor 501 and a memory 502; the memory 502 may be coupled to the processor 501. Figure 5 is exemplary; other types of structures may also be used to supplement or replace this structure to implement telecommunication functions or other functions.

[0089] In an optional embodiment, the functions of the pulse arc length adjustment device 300 or the control device 402 may be integrated into the processor 501. The processor 501 may be configured to perform the following control:

[0090] Obtaining a first current in a first pulse cycle; the first pulse cycle is any pulse cycle in pulse welding; the first current is an actual welding current obtained by the Nth detection in the first pulse cycle, where N=1, 2, ..., M-1, and M is a total number of times the actual welding current is detected in the first pulse cycle, and M is a positive integer;

[0091] If the first current is the preset short-circuit initial current, obtaining a second current; the second current is the maximum current in the short-circuit rising phase in the first pulse cycle;

[0092] According to the relationship between the second current and the first preset current and the second preset current, the duration of the second pulse cycle is adjusted to adjust the pulse arc length in the second pulse cycle; the first preset current and the second preset current are both greater than the preset base current and less than the preset peak current; the first preset current is less than the second preset current; the second pulse cycle is the next pulse cycle of the first pulse cycle.

[0093] In another optional embodiment, the pulse arc length adjustment device 300 or the control device 402 can be configured separately from the processor 501. For example, the pulse arc length adjustment device 300 or the control device 402 can be configured as a chip connected to the processor 501, and pulse arc length control is achieved through the control of the processor 501.

[0094] In addition, in some optional implementations, the computer device 500 may also include: a communication module, an input unit, an audio processor, a display, a power supply, etc. It is worth noting that the computer device 500 does not necessarily have to include Figure 5 In addition, the computer device 500 may also include all components shown in Figure 5 For components not shown, reference may be made to the prior art.

[0095] In some optional implementations, the processor 501 is sometimes also referred to as a controller or operation control, and may include a microprocessor or other processor device and / or logic device, which receives input and controls the operation of various components of the computer device 500.

[0096] The memory 502 can be, for example, one or more of a cache, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable devices. It can store the aforementioned information related to the pulse arc length adjustment device 300 or the welding system 400, and can also store programs that execute the relevant information. The processor 501 can execute the programs stored in the memory 502 to implement information storage or processing.

[0097] The input unit can provide input to the processor 501. The input unit can be, for example, a keypad or a touch input device. The power supply can be used to provide power to the computer device 500. The display can be used to display objects such as images and text. The display can be, for example, an LCD display, but is not limited thereto.

[0098] Memory 502 may be a solid-state memory, such as a read-only memory (ROM), random access memory (RAM), or a SIM card. Alternatively, it may be a memory that retains information even when power is off, can be selectively erased, and is provided with more data. Examples of such memory are sometimes referred to as EPROMs. Memory 502 may also be some other type of device. Memory 502 includes a buffer memory (sometimes referred to as a buffer). Memory 502 may include an application / function storage unit for storing application programs and function programs or processes for executing operations of computer device 500 via processor 501.

[0099] The memory 502 may also include a data storage unit for storing data, such as contacts, digital data, pictures, sounds, and / or any other data used by the electronic device. The driver storage unit of the memory 502 may include various driver programs for the computer device for communication functions and / or for executing other functions of the computer device (such as a messaging application, a contact book application, etc.).

[0100] The communication module is a transmitter / receiver that sends and receives signals via an antenna. The communication module (transmitter / receiver) is coupled to the processor 501 to provide input signals and receive output signals, which may be the same as in a conventional mobile communication terminal.

[0101] Based on different communication technologies, multiple communication modules can be provided in the same computer device, such as a cellular network module, a Bluetooth module, and / or a wireless local area network module. The communication module (transmitter / receiver) is also coupled to a speaker and a microphone via an audio processor to provide audio output via the speaker and receive audio input from the microphone, thereby implementing common telecommunication functions. The audio processor may include any suitable buffer, decoder, amplifier, etc. In addition, the audio processor is also coupled to the processor 501, thereby enabling recording of the device via the microphone and playback of stored audio via the speaker.

[0102] The embodiments of the present application also provide a computer-readable storage medium capable of implementing all steps of the pulse arc length adjustment method in the above embodiment. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, all steps of the pulse arc length adjustment method in the above embodiment are implemented. For example, when the processor executes the computer program, the following steps are implemented:

[0103] Obtaining a first current in a first pulse cycle; the first pulse cycle is any pulse cycle in pulse welding; the first current is an actual welding current obtained by the Nth detection in the first pulse cycle, where N=1, 2, ..., M-1, and M is a total number of times the actual welding current is detected in the first pulse cycle, and M is a positive integer;

[0104] If the first current is the preset short-circuit initial current, obtaining a second current; the second current is the maximum current in the short-circuit rising phase in the first pulse cycle;

[0105] According to the relationship between the second current and the first preset current and the second preset current, the duration of the second pulse cycle is adjusted to adjust the pulse arc length in the second pulse cycle; the first preset current and the second preset current are both greater than the preset base current and less than the preset peak current; the first preset current is less than the second preset current; the second pulse cycle is the next pulse cycle of the first pulse cycle.

[0106] In summary, the pulse arc length adjustment method, pulse arc length adjustment device, welding system, computer equipment, and computer-readable storage medium provided in the embodiments of the present application all have the following advantages:

[0107] Through the above-mentioned pulse arc length adjustment method, pulse arc length adjustment device and welding system provided in the embodiments of the present application, the actual welding current in the first pulse cycle can be obtained, and it can be determined whether the actual welding current detected in the first pulse cycle is the same as the preset short-circuit initial current. After it is determined that the actual welding current the same as the preset short-circuit initial current is obtained, the maximum current in the short-circuit rising phase can be obtained, and the maximum current is determined as the second current. Afterwards, the duration of the second pulse cycle can be adjusted according to the relationship between the second current and the first preset current and the second preset current, thereby adaptively adjusting the pulse arc length in the second pulse cycle, so that the pulse arc length during the welding process remains in a more appropriate state, thereby improving the welding efficiency.

[0108] In addition, when it is determined that the actual welding current that is the same as the preset short-circuit initial current is not detected in the first pulse cycle, the duration of the second pulse cycle can be increased so that the duration of the second pulse cycle is greater than the duration of the first pulse cycle, and then the pulse arc length of the second pulse cycle is adaptively adjusted so that the pulse arc length during the welding process remains in a more appropriate state, thereby improving the welding efficiency.

[0109] Although the present application provides method operation steps as described in the embodiments or flowcharts, more or fewer operation steps may be included based on conventional or non-creative work. The order of steps listed in the embodiments is only one way of executing the steps among many steps and does not represent the only execution order. When the actual device or client product is executed, it can be executed in sequence or in parallel according to the method shown in the embodiments or the drawings (for example, in a parallel processor or multi-threaded processing environment).

[0110] It will be understood by those skilled in the art that the embodiments of this specification may be provided as methods, devices (systems), or computer program products. Therefore, the embodiments of this specification may take the form of complete hardware embodiments, complete software embodiments, or embodiments combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0111] The present application is described with reference to the flowcharts and / or block diagrams of the methods, apparatus (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0112] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0113] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0114] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the device and system embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the partial description of the method embodiments. In this document, relational terms such as first and second, etc., are used solely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, the terms "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. Terms such as "upper" and "lower" indicate orientations or positional relationships based on those shown in the accompanying drawings and are intended solely for ease of description and simplification of the present application. They are not intended to indicate or imply that the device or element referred to must have, be constructed, or operate in a specific orientation, and are therefore not to be construed as limiting the present application. Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments in this application can be combined with each other. This application is not limited to any single aspect, nor to any single embodiment, nor to any combination and / or permutation of these aspects and / or embodiments. Moreover, each aspect and / or embodiment of the present application can be used alone or in combination with one or more other aspects and / or embodiments thereof.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and description of the present application.

[0116] In the description of this application, it should be noted that the terms "upper", "lower", "inside", "outside", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships in the working state of this application. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on this application.

[0117] In the description of this application, it should be noted that, unless otherwise specified or limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0118] The present application has been described above in conjunction with preferred embodiments, but these embodiments are merely exemplary and serve only as an illustrative example. On this basis, various replacements and improvements can be made to the present application, all of which fall within the scope of protection of the present application.

Claims

1. A pulse arc length adjustment method, characterized in that: The method comprises: Obtaining a first current in a first pulse cycle; the first pulse cycle is any pulse cycle in pulse welding; the first current is an actual welding current obtained by the Nth detection in the first pulse cycle, where N=1, 2, ..., M-1, and M is a total number of times the actual welding current is detected in the first pulse cycle, and M is a positive integer; If the first current is the preset short-circuit initial current, obtaining a second current; the second current is the maximum current in the short-circuit rising phase in the first pulse cycle; According to the relationship between the second current and the first preset current and the second preset current, the duration of the second pulse period is adjusted to adjust the pulse arc length in the second pulse period; the first preset current and the second preset current are both greater than the preset base current and less than the preset peak current; the first preset current is less than the second preset current; the second pulse period is the pulse period following the first pulse period; The adjusting the duration of the second pulse period according to the relationship between the second current, the first preset current, and the second preset current includes: If the second current is less than the first preset current, increasing the duration of the second pulse period so that the duration of the second pulse period is greater than the duration of the first pulse period; or If the second current is greater than the second preset current, reducing the duration of the second pulse period so that the duration of the second pulse period is less than the duration of the first pulse period; or, If the second current is greater than or equal to the first preset current and less than or equal to the second preset current, the duration of the second pulse period is maintained at the duration of the first pulse period.

2. The method according to claim 1, wherein Increasing the duration of the second pulse period includes: Determine the first duration according to the following first preset formula; T1=T0+K1(I0-I2); Wherein, T1 represents the first duration; T0 represents the duration of the first pulse cycle; K1 represents the first adjustment coefficient, and K1 is a constant greater than 0; I0 represents the first preset current; I2 represents the second current; Increase the duration of the second pulse period to the first duration.

3. The method according to claim 1, wherein The reducing the duration of the second pulse period includes: Determine the second duration according to the following second preset formula; T2=T0+K2(I3-I2); Wherein, T2 represents the second duration; T0 represents the duration of the first pulse cycle; K2 represents the second adjustment coefficient, and K2 is a constant greater than 0; I3 represents the second preset current; I2 represents the second current; The duration of the second pulse period is reduced to the second duration.

4. The method according to claim 1, wherein The method further comprises: If the first current is different from the preset short-circuit initial current, update N to N+1. When N+1 is less than M, re-execute the step of obtaining the first current in the first pulse period and subsequent steps until the obtained first current is the preset short-circuit initial current, and then execute the step of obtaining the second current and subsequent steps; or, when N+1 is equal to M, increase the duration of the second pulse period so that the duration of the second pulse period is greater than the duration of the first pulse period.

5. The method according to claim 4, wherein Increasing the duration of the second pulse period includes: Determine the third duration according to the following third preset formula; T3=T0+K3*T0; Wherein, T3 represents the third duration; T0 represents the duration of the first pulse cycle; K3 represents the third adjustment coefficient, and K3 is a constant greater than 0; Increase the duration of the second pulse period to the third duration.

6. The method according to any one of claims 1 to 5, characterized in that Before obtaining the first current in the first pulse period, the method further includes: Determine the duration of the first pulse period to be a preset duration.

7. A pulse arc length adjustment device, characterized in that: The device comprises: a first acquisition module, configured to acquire a first current in a first pulse cycle; the first pulse cycle being any pulse cycle in pulse welding; the first current being an actual welding current obtained by the Nth detection in the first pulse cycle, where N=1, 2, ..., M-1, and M being a total number of times the actual welding current is detected and obtained in the first pulse cycle, and M being a positive integer; A second acquisition module is configured to acquire a second current if the first current is a preset short-circuit initial current; the second current is a maximum current in a short-circuit rising phase in the first pulse cycle; an adjustment module, configured to adjust the duration of the second pulse period according to a relationship between the second current and the first preset current and the second preset current, so as to adjust the pulse arc length in the second pulse period; the first preset current and the second preset current are both greater than a preset base current and less than a preset peak current; the first preset current is less than the second preset current; and the second pulse period is a pulse period subsequent to the first pulse period; The adjustment module is used to adjust the duration of the second pulse period according to the relationship between the second current, the first preset current, and the second preset current, specifically: If the second current is less than the first preset current, increasing the duration of the second pulse period so that the duration of the second pulse period is greater than the duration of the first pulse period; or If the second current is greater than the second preset current, reducing the duration of the second pulse period so that the duration of the second pulse period is less than the duration of the first pulse period; or, If the second current is greater than or equal to the first preset current and less than or equal to the second preset current, the duration of the second pulse period is maintained at the duration of the first pulse period.

8. A welding system, characterized in that: The welding system includes: a power supply device and a control device connected to each other; The power supply device is used to provide welding current and welding voltage to the welding system during pulse welding; The control device is used to perform the following operations: Obtaining a first current in a first pulse cycle; the first pulse cycle is any pulse cycle in pulse welding; the first current is an actual welding current obtained by the Nth detection in the first pulse cycle, where N=1, 2, ..., M-1, and M is a total number of times the actual welding current is detected in the first pulse cycle, and M is a positive integer; If the first current is the preset short-circuit initial current, obtaining a second current; the second current is the maximum current in the short-circuit rising phase in the first pulse cycle; outputting a control signal based on a relationship between the second current and the first preset current and the second preset current, so that the power supply device adjusts the duration of the second pulse period according to the control signal, so as to adjust the pulse arc length in the second pulse period; the first preset current and the second preset current are both greater than a preset base current and less than a preset peak current; the first preset current is less than the second preset current; and the second pulse period is a pulse period subsequent to the first pulse period; The control device is configured to adjust the duration of the second pulse period according to the relationship between the second current and the first preset current and the second preset current, specifically: If the second current is less than the first preset current, increasing the duration of the second pulse period so that the duration of the second pulse period is greater than the duration of the first pulse period; or If the second current is greater than the second preset current, reducing the duration of the second pulse period so that the duration of the second pulse period is less than the duration of the first pulse period; or, If the second current is greater than or equal to the first preset current and less than or equal to the second preset current, the duration of the second pulse period is maintained at the duration of the first pulse period.

9. A computer device, characterized in that: The method comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 6 when executing the computer program.

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