Energy compensation method and device for short circuit welding

Abstract

The application provides an energy compensation method and device for short circuit welding, the method comprising: obtaining the average of short circuit arc ratio of a plurality of welding cycles in standard short circuit welding, denoted as standard short circuit arc ratio average; the short circuit arc ratio is the ratio of the duration of the short circuit stage to the duration of the arc stage in a welding cycle; obtaining the average of short circuit arc ratio of each welding cycle in the current welding cycle and the previous N welding cycles of the current welding cycle in actual short circuit welding, denoted as actual short circuit arc ratio average; determining the current compensation amount of the arc stage based on the deviation of the actual short circuit arc ratio average and the standard short circuit arc ratio average; compensating the current of the arc stage of the next welding cycle of the current welding cycle based on the current compensation amount, so as to compensate the energy of the next welding cycle. After each welding cycle of the actual short circuit welding is compensated according to the method, the spatter phenomenon and the phenomenon of poor welding effect can be avoided.

Description

Technical Field

[0001] This application relates to the field of welding technology, and in particular to an energy compensation method and apparatus for short-circuit welding. Background Technology

[0002] During short-circuit welding, if the cable is long, it may become tangled or coiled. This tangling or coiling affects the welding energy in the welding circuit, causing it to be either too high or too low. Insufficient welding energy may result in spatter, while excessive welding energy may lead to a poor weld finish.

[0003] Therefore, how to eliminate the changes in welding energy caused by cable winding or coiling during short-circuit welding, thereby avoiding spatter and poor weld quality, has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] To address the issue of how to eliminate the changes in welding energy caused by cable winding or coiling during short-circuit welding, thereby avoiding spatter and poor weld quality, this application provides an energy compensation method and apparatus for short-circuit welding.

[0005] In a first aspect, embodiments of this application provide an energy compensation method for short-circuit welding. The method includes: obtaining a standard short-circuit arc ratio average; the standard short-circuit arc ratio average refers to the average of the short-circuit arc ratios across multiple welding cycles in standard short-circuit welding; the short-circuit arc ratio refers to the ratio of the duration of the short-circuit phase to the duration of the arc phase in one welding cycle of short-circuit welding; obtaining an actual short-circuit arc ratio average; the actual short-circuit arc ratio average refers to the average of the short-circuit arc ratio in the current welding cycle and the average of the short-circuit arc ratios in each of the previous N welding cycles in the current welding cycle; N is an integer greater than or equal to zero; determining a current compensation amount for the arc phase based on the deviation between the actual short-circuit arc ratio average and the standard short-circuit arc ratio average; and performing current compensation on the current in the arc phase of the next welding cycle based on the current compensation amount to perform energy compensation for the next welding cycle.

[0006] In one possible implementation, obtaining the average standard short-circuit arc ratio includes: obtaining a preset welding voltage and a preset wire feed speed; obtaining a second correspondence relationship corresponding to the preset wire feed speed from a plurality of first correspondence relationships; the plurality of first correspondence relationships refer to the correspondence relationship between welding voltage and the average short-circuit arc ratio in standard short-circuit welding under different preset wire feed speeds; and determining the average standard short-circuit arc ratio based on the preset welding voltage and the second correspondence relationship.

[0007] In one possible implementation, obtaining the average actual short-circuit arc ratio includes: obtaining the short-circuit arc ratio of each welding cycle in the previous N welding cycles; determining a first short-circuit duration and a first arc duration; the first short-circuit duration being the duration of the short-circuit phase in the current welding cycle; the first arc duration being the duration of the arc phase in the current welding cycle; determining the short-circuit arc ratio of the current welding cycle based on the first short-circuit duration and the first arc duration; calculating the average of the short-circuit arc ratio of the current welding cycle and the average of the short-circuit arc ratios of each welding cycle in the previous N welding cycles to generate the average actual short-circuit arc ratio.

[0008] In one possible implementation, determining the current compensation amount for the arcing stage based on the deviation between the actual average short-circuit arcing ratio and the standard average short-circuit arcing ratio includes: calculating and generating the current compensation amount for the arcing stage using a proportional-integral-differential algorithm based on the deviation between the actual average short-circuit arcing ratio and the standard average short-circuit arcing ratio.

[0009] In one possible implementation, the current compensation for the arc-ignition phase of the next welding cycle based on the current compensation amount includes: if the current compensation amount is positive, increasing the current of the arc-ignition phase of the next welding cycle by the current compensation amount; or, if the current compensation amount is negative, decreasing the current of the arc-ignition phase of the next welding cycle by the absolute value of the current compensation amount.

[0010] Secondly, embodiments of this application also provide an energy compensation device for short-circuit welding. The device includes: a first acquisition module for acquiring a standard short-circuit arc ratio average; the standard short-circuit arc ratio average refers to the average of the short-circuit arc ratios across multiple welding cycles in standard short-circuit welding; the short-circuit arc ratio refers to the ratio of the duration of the short-circuit phase to the duration of the arc phase in one welding cycle of short-circuit welding; a second acquisition module for acquiring an actual short-circuit arc ratio average; the actual short-circuit arc ratio average refers to the average of the short-circuit arc ratio in the current welding cycle and the average of the short-circuit arc ratios in each of the previous N welding cycles in the current welding cycle; N is an integer greater than or equal to zero; a determination module for determining the current compensation amount for the arc phase based on the deviation between the actual short-circuit arc ratio average and the standard short-circuit arc ratio average; and a compensation module for performing current compensation on the current in the arc phase of the next welding cycle based on the current compensation amount, so as to perform energy compensation for the next welding cycle.

[0011] In one possible implementation, the first acquisition module is used to acquire the average standard short-circuit arc ratio, specifically: the first acquisition module is used to: acquire a preset welding voltage and a preset wire feed speed; acquire a second correspondence relationship corresponding to the preset wire feed speed from a plurality of first correspondence relationships; the plurality of first correspondence relationships refer to the correspondence between welding voltage and the average short-circuit arc ratio in standard short-circuit welding under different preset wire feed speeds; and determine the average standard short-circuit arc ratio based on the preset welding voltage and the second correspondence relationship.

[0012] In one possible implementation, the second acquisition module is used to acquire the average actual short-circuit arc ratio, specifically: the second acquisition module is used to: acquire the short-circuit arc ratio of each welding cycle in the stored first N welding cycles; determine the first short-circuit duration and the first arc duration; the first short-circuit duration is the duration of the short-circuit phase in the current welding cycle; the first arc duration is the duration of the arc phase in the current welding cycle; determine the short-circuit arc ratio of the current welding cycle based on the first short-circuit duration and the first arc duration; calculate the average of the short-circuit arc ratio of the current welding cycle and the average of the short-circuit arc ratios of each welding cycle in the first N welding cycles, and generate the average actual short-circuit arc ratio.

[0013] In one possible implementation, the determining module is used to determine the current compensation amount during the arcing stage based on the deviation between the actual average short-circuit arcing ratio and the standard average short-circuit arcing ratio. Specifically, the determining module is used to calculate and generate the current compensation amount during the arcing stage based on the deviation between the actual average short-circuit arcing ratio and the standard average short-circuit arcing ratio using a proportional-integral-differential algorithm.

[0014] In one possible implementation, the compensation module is used to compensate the current of the arc-ignition phase in the next welding cycle based on the current compensation amount. Specifically, the compensation module is used to: if the current compensation amount is positive, increase the current of the arc-ignition phase in the next welding cycle by the current compensation amount; or, if the current compensation amount is negative, decrease the current of the arc-ignition phase in the next welding cycle by the absolute value of the current compensation amount.

[0015] Thirdly, embodiments of this application also provide a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in the first aspect.

[0016] Fourthly, embodiments of this application also provide a computer-readable storage medium storing a computer program for performing the method described in the first aspect.

[0017] This application provides an energy compensation method and apparatus for short-circuit welding. The method involves obtaining the average short-circuit arc ratio over multiple welding cycles in standard short-circuit welding. The short-circuit arc ratio is the ratio of the duration of the short-circuit phase to the duration of the arc phase in one welding cycle. Furthermore, it also involves obtaining the average short-circuit arc ratio of the current welding cycle in actual short-circuit welding and the average short-circuit arc ratio of each welding cycle in the previous N welding cycles. Then, based on the deviation between the average short-circuit arc ratio in actual short-circuit welding and the average short-circuit arc ratio in standard short-circuit welding, the current compensation amount for the arc phase is determined. Subsequently, this current compensation amount is used to compensate the current in the arc phase of the next welding cycle, thereby compensating the welding energy of the next welding cycle.

[0018] In this way, according to the energy compensation method for short-circuit welding provided in the embodiments of this application, after energy compensation for each welding cycle of actual short-circuit welding, it can be ensured that the welding energy of each welding cycle is in a relatively appropriate state, neither too large nor too small, thereby ensuring that the arc length of the welding arc is also in a relatively appropriate state, thereby avoiding the occurrence of spatter and poor weld effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of an application scenario provided by an embodiment of this application.

[0021] Figure 2 This is a schematic diagram illustrating another application scenario provided by an embodiment of this application.

[0022] Figure 3 This is a flowchart illustrating an energy compensation method for short-circuit welding, provided as an embodiment of this application.

[0023] Figure 4 This is a schematic diagram illustrating another application scenario provided by an embodiment of this application.

[0024] Figure 5 This is a schematic diagram illustrating another application scenario provided by an embodiment of this application.

[0025] Figure 6 This is a schematic diagram illustrating another application scenario provided by an embodiment of this application.

[0026] Figure 7 This is a schematic diagram illustrating another application scenario provided by an embodiment of this application.

[0027] Figure 8 This is a schematic diagram illustrating another application scenario provided by an embodiment of this application.

[0028] Figure 9 This is a structural block diagram of an energy compensation device for short-circuit welding provided in an embodiment of this application.

[0029] Figure 10 This is a structural block diagram of a computer device provided in an embodiment of this application. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present application will become clearer and more apparent.

[0031] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0032] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0033] To facilitate understanding, the application scenarios of the technical solution in this application will be introduced first.

[0034] The inventors discovered in practical applications that during short-circuit welding, if the cable is long, there is a high probability of cable tangling or coiling. Once the cable tangles or coils, the inductance in the welding circuit increases, resulting in a smaller rate of change of the welding current.

[0035] In that case, such as Figure 1 As shown, a welding cycle of short-circuit welding includes a short-circuit phase and an arc-ignition phase. During the arc-ignition phase, as the welding current rises, the rate of change of the welding current may decrease, causing the actual welding current (actual current) to rise more slowly compared to the commanded welding current (command current) controlled according to the set welding parameters. This delays the time it takes to reach the maximum welding current (high current) of the arc-ignition phase, resulting in less welding energy and a shorter arc length, thus causing spatter.

[0036] like Figure 2As shown, a welding cycle for short-circuit welding includes a short-circuit phase and an arc-ignition phase. During the arc-ignition phase, as the welding current decreases, the rate of change of the welding current may decrease, resulting in a slower decrease in the actual current compared to the commanded current. This slower reduction in the high current leads to increased welding energy during the welding process, resulting in a longer arc length and consequently, a poorer weld finish.

[0037] Furthermore, the inventors discovered in practical applications that during short-circuit welding, after the molten droplet forms, it comes into contact with the molten pool as the welding wire is fed, resulting in a short circuit. The droplet then gradually transitions into the molten pool. After the transition is complete, the welding wire and the molten pool separate, generating a welding arc. Subsequently, during the high-current phase of the arc-burning stage, the welding wire melts, forming new droplets. As the welding current gradually decreases to the arc-maintaining current, it awaits the next short circuit. In this process, the lower the welding energy during the arc-burning stage, the shorter the duration of the arc-burning stage, and the larger the ratio of the short-circuit stage duration to the arc-burning stage duration. Conversely, the higher the welding energy during the arc-burning stage, the longer the duration of the arc-burning stage, and the smaller the ratio of the short-circuit stage duration to the arc-burning stage duration.

[0038] To address the aforementioned problems, this application provides an energy compensation method and apparatus for short-circuit welding. The method involves obtaining the average short-circuit arc ratio over multiple welding cycles in standard short-circuit welding. The short-circuit arc ratio is the ratio of the duration of the short-circuit phase to the duration of the arc phase in one welding cycle. Furthermore, the method also obtains the average short-circuit arc ratio of the current welding cycle in actual short-circuit welding and the average short-circuit arc ratio of each welding cycle in the previous N welding cycles. Then, based on the deviation between the average short-circuit arc ratio in actual short-circuit welding and the average short-circuit arc ratio in standard short-circuit welding, the current compensation amount for the arc phase is determined. Subsequently, this current compensation amount is used to compensate the current in the arc phase of the next welding cycle, thereby compensating the welding energy of the next welding cycle.

[0039] In this way, according to the energy compensation method for short-circuit welding provided in the embodiments of this application, after energy compensation for each welding cycle of actual short-circuit welding, it can be ensured that the welding energy of each welding cycle is in a relatively appropriate state, neither too large nor too small, thereby ensuring that the arc length of the welding arc is also in a relatively appropriate state, thereby avoiding the occurrence of spatter and poor weld effect.

[0040] The energy compensation method for short-circuit welding provided in the embodiments of this application will be described below with reference to the accompanying drawings.

[0041] See Figure 3 , Figure 3This is a flowchart illustrating an energy compensation method for short-circuit welding, provided as an embodiment of this application. This method can be applied to terminal devices or controllers installed in short-circuit welding systems. The following description uses a controller installed in a short-circuit welding system as an example to illustrate an embodiment of this application. Figure 3 As shown, the method may include the following steps:

[0042] Step S101: Obtain the average standard short-circuit arcing ratio.

[0043] In one possible implementation, in short-circuit welding applications, welding can be performed periodically according to a pre-set welding cycle. The welding cycle can be set according to the requirements of the actual application scenario. Furthermore, a welding cycle can include a short-circuit phase and an arc-ignition phase.

[0044] Optionally, the average short-circuit arc ratio can be the average of the short-circuit arc ratios across multiple welding cycles in standard short-circuit welding. Standard short-circuit welding can also be referred to as ideal short-circuit welding. In standard short-circuit welding, the welding energy in each welding cycle can remain consistent; that is, the welding energy in each welding cycle is appropriate, neither too high nor too low, ensuring that the arc length of the welding arc remains suitable, preventing spatter and poor weld quality, and resulting in a more stable weld.

[0045] Optionally, the multiple welding cycles of a standard short-circuit weld can be all welding cycles of a standard short-circuit weld. Optionally, the multiple welding cycles of a standard short-circuit weld can also be a portion of the welding cycles of a standard short-circuit weld. Optionally, the multiple welding cycles of a standard short-circuit weld can be multiple consecutive welding cycles in a standard short-circuit weld. Optionally, the multiple welding cycles of a standard short-circuit weld can also be multiple discontinuous (or intermittent) welding cycles in a standard short-circuit weld.

[0046] Optionally, the short-circuit arc ratio can be the ratio of the duration of the short-circuit phase to the duration of the arc phase in one welding cycle of short-circuit welding. For example, as... Figure 4 As shown, the short-circuit arc ratio can be Figure 4 The ratio between the duration T1 of the short-circuit phase and the duration T2 of the arcing phase in the welding cycle shown.

[0047] In one possible implementation, in short-circuit welding applications, welding parameters can be preset before welding. These parameters may include the welding cycle, the duty cycle of the short-circuit phase and / or the duty cycle of the arc phase within each welding cycle, welding current, welding voltage, etc. It is understood that welding parameters may also include other parameters, such as wire feed speed, which will not be listed here.

[0048] The average standard short-circuit arc ratio is related to the preset wire feed speed and welding voltage in a short-circuit welding scenario. Therefore, the average standard short-circuit arc ratio will also differ when the preset welding voltage and / or wire feed speed is different.

[0049] Based on this, in one possible implementation, the average short-circuit arc ratio can be obtained as follows: obtain a preset welding voltage and a preset wire feed speed; obtain a second correspondence relationship corresponding to the preset wire feed speed from a plurality of first correspondence relationships; the plurality of first correspondence relationships refer to the correspondence between welding voltage and the average short-circuit arc ratio in standard short-circuit welding under different preset wire feed speeds; and determine the average standard short-circuit arc ratio based on the preset welding voltage and the second correspondence relationship.

[0050] The preset welding voltage refers to the welding voltage set in advance during actual short-circuit welding. The preset wire feed speed refers to the wire feed speed set in advance during actual short-circuit welding. It should be noted that actual short-circuit welding can also be referred to as current short-circuit welding or short-circuit welding to be energy compensated, etc., and this application does not limit it in this way.

[0051] Optionally, the first correspondence can be represented by a table including the welding voltage and the average short-circuit arc ratio. In this scenario, different wire feed speeds correspond to different tables. Based on this, a table corresponding to a preset wire feed speed can be obtained, and the second correspondence can be represented by this table.

[0052] Optionally, such as Figure 5 As shown, the first correspondence can also be represented by the relationship curve between welding voltage and the average short-circuit arc ratio. In this scenario, different wire feed speeds correspond to different relationship curves. For example, wire feed speed S1 corresponds to relationship curve 1, wire feed speed S2 corresponds to relationship curve 2, and wire feed speed S3 corresponds to relationship curve 3. Wherein, S1 is less than S2, and S2 is less than S3. Based on this, the relationship curve corresponding to the preset wire feed speed can be obtained, and the second correspondence can be represented by this relationship curve.

[0053] It is understandable that the first correspondence can also be represented in other ways, which will not be listed here. Similarly, the second correspondence can also be represented in other ways.

[0054] Optionally, the average short-circuit arc ratio can be determined based on the preset welding voltage and the second correspondence, which can be achieved as follows: select the welding voltage that is the same as the preset welding voltage from the second correspondence, and record the selected welding voltage as the first welding voltage; determine the average short-circuit arc ratio corresponding to the first welding voltage in the second correspondence as the average standard short-circuit arc ratio.

[0055] Step S102: Obtain the average value of the actual short-circuit arcing ratio.

[0056] The actual short-circuit arc ratio mean refers to the average of the short-circuit arc ratio in the current welding cycle and the average of the short-circuit arc ratios in the previous N welding cycles during actual short-circuit welding. N is an integer greater than or equal to zero.

[0057] Optionally, the first N welding cycles of the current welding cycle can be the first N consecutive welding cycles of the current welding cycle. Optionally, the first N welding cycles of the current welding cycle can also be the first N discontinuous welding cycles of the current welding cycle. This application does not impose any restrictions on this. However, for more stable welding, the first N consecutive welding cycles of the current welding cycle are usually selected to determine the average value of the actual short-circuit arc ratio.

[0058] In one possible implementation, obtaining the average actual short-circuit arc ratio can be achieved as follows: obtaining the short-circuit arc ratio of each welding cycle in the previous N welding cycles; determining the first short-circuit duration and the first arc duration; the first short-circuit duration being the duration of the short-circuit phase in the current welding cycle; the first arc duration being the duration of the arc phase in the current welding cycle; determining the short-circuit arc ratio of the current welding cycle based on the first short-circuit duration and the first arc duration; calculating the average of the short-circuit arc ratio of the current welding cycle and the average of the short-circuit arc ratios of each welding cycle in the previous N welding cycles to generate the average actual short-circuit arc ratio.

[0059] Optionally, in actual short-circuit welding, the short-circuit arc ratio for each welding cycle is determined. After determining the short-circuit arc ratio for each welding cycle, it can be stored. The method for determining the short-circuit arc ratio for each welding cycle can refer to the aforementioned method for determining the short-circuit arc ratio for the current welding cycle, and will not be repeated here.

[0060] Step S103: Based on the deviation between the average actual short-circuit arc ratio and the average standard short-circuit arc ratio, determine the current compensation amount during the arcing stage.

[0061] In one possible implementation, the current compensation amount for the arcing stage is determined based on the deviation between the actual average short-circuit arcing ratio and the standard average short-circuit arcing ratio. This can be achieved as follows: based on the deviation between the actual average short-circuit arcing ratio and the standard average short-circuit arcing ratio, the current compensation amount for the arcing stage is calculated and generated using a proportional-integral-differential (PID) algorithm.

[0062] For example, such as Figure 6 As shown, it can be done according to Figure 6As shown, the difference between the actual short-circuit arc ratio average Kave and the standard short-circuit arc ratio average K, Kave-K, is first calculated. Then, the difference Kave-K is input to the PID controller, and the current compensation amount IP during the arcing stage is calculated by the PID controller.

[0063] Step S104: Based on the current compensation amount, perform current compensation on the current during the arc-burning stage of the next welding cycle in the current welding cycle, so as to perform energy compensation for the next welding cycle.

[0064] In one possible implementation, current compensation for the arc-ignition phase of the next welding cycle based on the current compensation amount can be achieved as follows: if the current compensation amount is positive, the current of the arc-ignition phase of the next welding cycle is increased by the current compensation amount; or, if the current compensation amount is negative, the current of the arc-ignition phase of the next welding cycle is decreased by the absolute value of the current compensation amount.

[0065] When the current compensation is positive, it indicates that the welding energy in the current short-circuit welding is lower than that in the standard short-circuit welding, and the welding energy of the current short-circuit welding needs to be increased. Based on this, optionally, such as... Figure 7 As shown, Figure 7 The diagram shows the next welding cycle after the current welding cycle, which includes a short-circuit phase and an arc-ignition phase. According to the energy compensation method for short-circuit welding provided in this application, the current compensation amount is increased during the arc-ignition phase of this welding cycle, thereby increasing the welding energy of this welding cycle, such as... Figure 7 As shown, the compensated welding energy is greater than the uncompensated welding energy, so in the next welding cycle of the current welding cycle, welding is performed with a welding energy equivalent to that of standard short-circuit welding, which can avoid spatter.

[0066] When the current compensation is negative, it indicates that the welding energy in the current short-circuit welding is greater than that in the standard short-circuit welding, and the welding energy of the current short-circuit welding needs to be reduced. Based on this, optionally, such as... Figure 8 As shown, Figure 8 The diagram shows the next welding cycle after the current welding cycle, which includes a short-circuit phase and an arcing phase. According to the energy compensation method for short-circuit welding provided in this application, the current compensation amount is reduced during the arcing phase of this welding cycle, thereby reducing the welding energy of this welding cycle, such as... Figure 8 As shown, the compensated welding energy is less than the original welding energy. Therefore, in the next welding cycle of the current welding cycle, welding is performed with a welding energy equivalent to that of standard short-circuit welding, which can avoid the phenomenon of poor weld quality.

[0067] The energy compensation method for short-circuit welding provided in this application embodiment can obtain the average short-circuit arc ratio of multiple welding cycles in standard short-circuit welding. The short-circuit arc ratio refers to the ratio of the duration of the short-circuit phase to the duration of the arc phase in one welding cycle of short-circuit welding. In addition, the average short-circuit arc ratio of the current welding cycle in actual short-circuit welding and the average short-circuit arc ratio of each welding cycle in the previous N welding cycles of the current welding cycle can be obtained. Then, based on the deviation between the average short-circuit arc ratio in actual short-circuit welding and the average short-circuit arc ratio in standard short-circuit welding, the current compensation amount for the arc phase can be determined. Afterwards, the current compensation amount can be used to compensate the current of the arc phase in the next welding cycle of the current welding cycle, thereby compensating the welding energy of the next welding cycle.

[0068] In this way, according to the energy compensation method for short-circuit welding provided in the embodiments of this application, after energy compensation for each welding cycle of actual short-circuit welding, it can be ensured that the welding energy of each welding cycle is in a relatively appropriate state, neither too large nor too small, thereby ensuring that the arc length of the welding arc is also in a relatively appropriate state, thereby avoiding the occurrence of spatter and poor weld effect.

[0069] It is understood that the above embodiments are merely examples, and modifications can be made to the above embodiments in actual implementation. Those skilled in the art will understand that any modifications to the above embodiments that do not require creative effort fall within the protection scope of this application, and will not be described in detail in the embodiments.

[0070] Based on the same inventive concept, this application also provides an energy compensation device for short-circuit welding. Since the principle of the energy compensation device for short-circuit welding is similar to that of the aforementioned energy compensation method for short-circuit welding, the implementation of the energy compensation device for short-circuit welding can refer to the implementation of the aforementioned energy compensation method for short-circuit welding, and the repeated parts will not be described again.

[0071] See Figure 9 , Figure 9 This is a structural block diagram of an energy compensation device for short-circuit welding provided in an embodiment of this application. Figure 9 As shown, the energy compensation device 900 for short-circuit welding may include: a first acquisition module 901, a second acquisition module 902, a determination module 903, and a compensation module 904. Among them,

[0072] The first acquisition module 901 can be used to acquire the average standard short-circuit arc ratio; the average standard short-circuit arc ratio refers to the average short-circuit arc ratio of multiple welding cycles in standard short-circuit welding; the short-circuit arc ratio refers to the ratio of the duration of the short-circuit phase to the duration of the arc phase in one welding cycle of short-circuit welding.

[0073] The second acquisition module 902 can be used to acquire the average value of the actual short-circuit arc ratio; the average value of the actual short-circuit arc ratio refers to the average value of the short-circuit arc ratio of the current welding cycle and the short-circuit arc ratio of each welding cycle in the previous N welding cycles in the actual short-circuit welding; N is an integer greater than or equal to zero.

[0074] The determination module 903 can be used to determine the current compensation amount during the arcing stage based on the deviation between the average actual short-circuit arcing ratio and the average standard short-circuit arcing ratio.

[0075] The compensation module 904 can be used to perform current compensation on the current of the arc-burning stage of the next welding cycle based on the current compensation amount, so as to perform energy compensation for the next welding cycle.

[0076] In one possible implementation, the first acquisition module 901 is used to acquire the average standard short-circuit arc ratio, specifically: the first acquisition module 901 is used to: acquire a preset welding voltage and a preset wire feed speed; acquire a second correspondence relationship corresponding to the preset wire feed speed from a plurality of first correspondence relationships; the plurality of first correspondence relationships refer to the correspondence between welding voltage and the average short-circuit arc ratio in standard short-circuit welding under different preset wire feed speeds; and determine the average standard short-circuit arc ratio based on the preset welding voltage and the second correspondence relationship.

[0077] In one possible implementation, the second acquisition module 902 is used to acquire the average actual short-circuit arc ratio, specifically: the second acquisition module 902 is used to: acquire the short-circuit arc ratio of each welding cycle in the stored first N welding cycles; determine the first short-circuit duration and the first arc duration; the first short-circuit duration is the duration of the short-circuit phase in the current welding cycle; the first arc duration is the duration of the arc phase in the current welding cycle; determine the short-circuit arc ratio of the current welding cycle based on the first short-circuit duration and the first arc duration; calculate the average of the short-circuit arc ratio of the current welding cycle and the average of the short-circuit arc ratios of each welding cycle in the first N welding cycles, and generate the average actual short-circuit arc ratio.

[0078] In one possible implementation, the determining module 903 is used to determine the current compensation amount during the arcing stage based on the deviation between the actual average short-circuit arcing ratio and the standard average short-circuit arcing ratio. Specifically, the determining module 903 is used to calculate and generate the current compensation amount during the arcing stage based on the deviation between the actual average short-circuit arcing ratio and the standard average short-circuit arcing ratio using a proportional-integral-differential algorithm.

[0079] In one possible implementation, the compensation module 904 is used to perform current compensation on the current of the arc-ignition stage of the next welding cycle based on the current compensation amount. Specifically, the compensation module 904 is used to: if the current compensation amount is positive, increase the current of the arc-ignition stage of the next welding cycle by the current compensation amount; or, if the current compensation amount is negative, decrease the current of the arc-ignition stage of the next welding cycle by the absolute value of the current compensation amount.

[0080] See Figure 10 , Figure 10 This is a structural block diagram of a computer device provided in an embodiment of this application. Figure 10 As shown, the computer device 1000 may include a processor 1001 and a memory 1002; the memory 1002 may be coupled to the processor 1001. It is worth noting that... Figure 10 This is an example; other types of structures can also be used to supplement or replace this structure to achieve telecommunications functions or other functions.

[0081] In one possible implementation, the function of the energy compensation device 900 for short-circuit welding can be integrated into the processor 1001.

[0082] In one possible implementation, the energy compensation device 900 for short-circuit welding can be configured separately from the processor 1001. For example, the energy compensation device 900 for short-circuit welding can be configured as a chip connected to the processor 1001, and the switching can be achieved through the control of the processor 1001.

[0083] Furthermore, in some alternative implementations, the computer device 1000 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 1000 is not necessarily required to include these components. Figure 10 All components shown; in addition, the computer device 1000 may also include Figure 10 For components not shown, please refer to existing technologies.

[0084] In some alternative implementations, the processor 1001, sometimes also referred to as a controller or operation control, 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 1000.

[0085] The memory 1002 may be, for example, one or more of a cache, flash memory, hard drive, removable medium, volatile memory, non-volatile memory, or other suitable device. It may store the aforementioned information related to the energy compensation device 900 for short-circuit welding, and may also store a program for executing that information. The processor 1001 may execute the program stored in the memory 1002 to perform information storage or processing, etc.

[0086] An input unit can provide input to the processor 1001. This input unit may be, for example, a keypad or touch input device. A power supply can be used to provide power to the computer device 1000. A display can be used to display images and text, etc. This display may be, for example, an LCD display, but is not limited to this.

[0087] The memory 1002 can be a solid-state memory, such as a read-only memory (ROM), random access memory (RAM), a SIM card, etc. It can also be a memory that retains information even when power is off, can be selectively erased, and contains more data; examples of this type of memory are sometimes referred to as EPROMs, etc. The memory 1002 can also be some other type of device. The memory 1002 includes a buffer memory (sometimes called a buffer). The memory 1002 may include an application / function storage unit for storing application programs and function programs or processes for executing operations of the computer device 1000 via the processor 1001.

[0088] The memory 1002 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 1002 may include various drivers for the computer device for communication functions and / or for performing other functions of the computer device (such as messaging applications, address book applications, etc.).

[0089] 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 1001 to provide input signals and receive output signals, which is the same as in a conventional mobile communication terminal.

[0090] Based on different communication technologies, multiple communication modules can be configured in the same computer device, such as cellular network modules, Bluetooth modules, and / or wireless LAN modules. The communication module (transmitter / receiver) is also coupled to a speaker and microphone via an audio processor to provide audio output through the speaker and receive audio input from the microphone, thereby enabling typical telecommunications functions. The audio processor may include any suitable buffer, decoder, amplifier, etc. Additionally, the audio processor is coupled to processor 1001, enabling on-device recording via the microphone and on-device playback of stored sound via the speaker.

[0091] Embodiments of this application also provide a computer-readable storage medium capable of implementing all steps of the energy compensation method for short-circuit welding in the above embodiments, wherein the computer-readable storage medium stores a computer program that, when executed by a processor, implements all steps of the energy compensation method for short-circuit welding in the above embodiments.

[0092] While this application provides the method operation steps as described in the embodiments or flowcharts, more or fewer operation steps may be included based on conventional or non-inventive labor. The order of steps listed in the embodiments is merely one possible execution order among many and does not represent the only execution order. In actual device or client product execution, the methods shown in the embodiments or drawings can be executed sequentially or in parallel (e.g., in a parallel processor or multi-threaded processing environment).

[0093] Those skilled in the art will understand that the embodiments of this specification can be provided as methods, apparatus (systems), or computer program products. Therefore, the embodiments of this specification can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0094] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1A device that provides the functions specified in one or more boxes.

[0095] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0096] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0097] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on its differences from other embodiments. In particular, the device and system embodiments are relatively simple in description because they are fundamentally similar to the method embodiments; relevant parts can be referred to the descriptions of the method embodiments. In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. The terms "upper," "lower," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. It should be noted that, without conflict, the embodiments and features in the embodiments of 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 substitution of these aspects and / or embodiments. Moreover, each aspect and / or embodiment of this application can be used alone or in combination with one or more other aspects and / or embodiments.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application.

[0099] The present application has been described above with reference to preferred embodiments; however, these embodiments are merely exemplary and illustrative. Various substitutions and modifications can be made to the present application based on these embodiments, all of which fall within the protection scope of the present application.

Claims

1. An energy compensation method for short-circuit welding, characterized in that, The method includes: Obtain the average standard short-circuit arc ratio; the average standard short-circuit arc ratio refers to the average short-circuit arc ratio of multiple welding cycles in standard short-circuit welding; the short-circuit arc ratio refers to the ratio of the duration of the short-circuit phase to the duration of the arc phase in one welding cycle of short-circuit welding; Obtain the average actual short-circuit arc ratio; the average actual short-circuit arc ratio refers to the average of the short-circuit arc ratio in the current welding cycle and the short-circuit arc ratio in each of the previous N welding cycles in the actual short-circuit welding; N is an integer greater than or equal to zero; Based on the deviation between the average actual short-circuit arc ratio and the average standard short-circuit arc ratio, the current compensation amount during the arcing stage is determined. Based on the current compensation amount, current compensation is performed on the current during the arc-ignition phase of the next welding cycle in the current welding cycle, in order to perform energy compensation for the next welding cycle, including: If the current compensation amount is positive, the current during the arc-ignition phase of the next welding cycle will be increased by the current compensation amount; or... If the current compensation is negative, the current in the arc-ignition phase of the next welding cycle will be reduced by the absolute value of the current compensation.

2. The method as described in claim 1, characterized in that, The acquisition of the average standard short-circuit arcing ratio includes: Obtain the preset welding voltage and preset wire feed speed; Obtain a second correspondence relationship corresponding to the preset wire feed speed from multiple first correspondence relationships; the multiple first correspondence relationships refer to the correspondence between the welding voltage and the average short-circuit arc ratio in standard short-circuit welding under different preset wire feed speeds. Based on the preset welding voltage and the second correspondence, the average value of the standard short-circuit arc ratio is determined.

3. The method as described in claim 1, characterized in that, The process of obtaining the average actual short-circuit arcing ratio includes: Obtain the short-circuit arc ratio of each welding cycle in the stored first N welding cycles; Determine the first short-circuit duration and the first arc duration; the first short-circuit duration is the duration of the short-circuit phase in the current welding cycle; the first arc duration is the duration of the arc phase in the current welding cycle; The short-circuit arc ratio for the current welding cycle is determined based on the first short-circuit duration and the first arc duration. Calculate the short-circuit arc ratio of the current welding cycle and the average of the short-circuit arc ratios of each welding cycle in the previous N welding cycles to generate the average of the actual short-circuit arc ratios.

4. The method as described in claim 1, characterized in that, The determination of the current compensation amount during the arcing stage based on the deviation between the average actual short-circuit arcing ratio and the average standard short-circuit arcing ratio includes: Based on the deviation between the actual average short-circuit arc ratio and the standard average short-circuit arc ratio, the current compensation amount for the arcing stage is calculated using a proportional-integral-differential algorithm.

5. An energy compensation device for short-circuit welding, characterized in that, The device includes: The first acquisition module is used to acquire the average standard short-circuit arc ratio; the average standard short-circuit arc ratio refers to the average short-circuit arc ratio of multiple welding cycles in standard short-circuit welding; the short-circuit arc ratio refers to the ratio of the duration of the short-circuit phase to the duration of the arc phase in one welding cycle of short-circuit welding. The second acquisition module is used to acquire the average value of the actual short-circuit arc ratio; the average value of the actual short-circuit arc ratio refers to the average value of the short-circuit arc ratio of the current welding cycle and the short-circuit arc ratio of each welding cycle in the previous N welding cycles in the actual short-circuit welding; N is an integer greater than or equal to zero; The determination module is used to determine the current compensation amount during the arcing stage based on the deviation between the average actual short-circuit arcing ratio and the average standard short-circuit arcing ratio. The compensation module is used to compensate the current in the arc-ignition phase of the next welding cycle based on the current compensation amount, so as to compensate the energy of the next welding cycle. Specifically, it is used to: if the current compensation amount is positive, increase the current in the arc-ignition phase of the next welding cycle by the current compensation amount; or, If the current compensation is negative, the current in the arc-ignition phase of the next welding cycle will be reduced by the absolute value of the current compensation.

6. The apparatus as claimed in claim 5, characterized in that, The first acquisition module is used to acquire the average standard short-circuit arcing ratio, specifically: The first acquisition module is used for: Obtain the preset welding voltage and preset wire feed speed; Obtain a second correspondence relationship corresponding to the preset wire feed speed from multiple first correspondence relationships; the multiple first correspondence relationships refer to the correspondence between the welding voltage and the average short-circuit arc ratio in standard short-circuit welding under different preset wire feed speeds. Based on the preset welding voltage and the second correspondence, the average value of the standard short-circuit arc ratio is determined.

7. The apparatus as claimed in claim 5, characterized in that, The second acquisition module is used to acquire the average value of the actual short-circuit arcing ratio, specifically: The second acquisition module is used for: Obtain the short-circuit arc ratio of each welding cycle in the stored first N welding cycles; Determine the first short-circuit duration and the first arc duration; the first short-circuit duration is the duration of the short-circuit phase in the current welding cycle; the first arc duration is the duration of the arc phase in the current welding cycle; The short-circuit arc ratio for the current welding cycle is determined based on the first short-circuit duration and the first arc duration. Calculate the short-circuit arc ratio of the current welding cycle and the average of the short-circuit arc ratios of each welding cycle in the previous N welding cycles to generate the average of the actual short-circuit arc ratios.

8. A computer device, characterized in that, The method includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the method of any one of claims 1 to 4.

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