CN112404656B - Multi-welder coordinated control method and system - Google Patents

Multi-welder coordinated control method and system Download PDF

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CN112404656B
CN112404656B CN202011254731.0A CN202011254731A CN112404656B CN 112404656 B CN112404656 B CN 112404656B CN 202011254731 A CN202011254731 A CN 202011254731A CN 112404656 B CN112404656 B CN 112404656B
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machine
welding
master
slave
machines
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CN112404656A (en
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胡家奇
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Panasonic Welding Systems Tangshan Co Ltd
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Panasonic Welding Systems Tangshan Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/095—Monitoring or automatic control of welding parameters
    • B23K9/0953—Monitoring or automatic control of welding parameters using computing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories

Abstract

The disclosure provides a method and a system for coordinated control of multiple welding machines, and belongs to the technical field of welding of electric welding machines. The method for the coordination control of the multiple welding machines comprises the steps of obtaining information of a master machine and a slave machine, a welding machine current detection signal or welding state information of the welding machines; determining and outputting master-slave machine judgment information of the welding machine according to the information; when the information of the master machine and the slave machine is that the master machine exists, the rest welding machines except the master machine are slave machines; when the master-slave machine information is that no master machine exists, judging one of the welding machines with current detection as the master machine from all the welding machines; when the information of the master machine and the slave machine is changed from the existence of the master machine to the nonexistence of the master machine, judging one welding machine from all welding machines in a welding state as the master machine; and acquiring the AC waveform phase parameters output by the host, and adjusting the corresponding AC waveform phase of the slave according to the AC waveform phase parameters. The method can determine one welder as a master machine and the rest as slave machines in a plurality of welders, coordinate and adjust the phases of the alternating current waveforms of the master machine and the slave machines to be consistent, and solve the technical problem of mutual interference of the alternating current waveforms of the plurality of welders.

Description

Multi-welder coordinated control method and system
Technical Field
The disclosure relates to the technical field of welding of electric welding machines, in particular to a method and a system for coordinately controlling multiple welding machines.
Background
TIG Welding (Tungsten Inert Gas Welding), also known as non-consumable Inert Gas Tungsten arc Welding. TIG welding is widely used, and is classified into direct current TIG and alternating current TIG. The welding of alternating current TIG is mainly applied to the welding of non-ferrous metal materials, such as aluminum, aluminum alloy and the like. Alternating current TIG is widely applied in the fields of automobiles, aerospace and the like in the modern industrial field.
The current direction is periodically changed during alternating current TIG welding, and the changing frequency and the positive-negative ratio are determined by the alternating current frequency and the cleaning width of a welding machine power supply. When a workpiece is welded by a plurality of welding machines, the welding machines are mutually influenced in the welding process due to the asynchronous phases of alternating current waveforms among the power supplies of the welding machines, so that the welding effect is influenced, and poor welding is caused.
The above information disclosed in the background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute prior art that is known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a method and a system for coordinately controlling a plurality of welding machines, which are used for coordinately controlling the plurality of welding machines to weld the same workpiece. One of the welding machines is determined as a master machine, the other welding machines are determined as slave machines, the phases of alternating current waveforms of the master machine and the slave machines are coordinated and adjusted to be consistent, and the technical problem that the alternating current waveforms of the welding machines are mutually interfered is solved.
In order to achieve the purpose, the technical scheme adopted by the disclosure is as follows:
according to a first aspect of the disclosure, a method for coordinately controlling multiple welding machines is provided, which includes acquiring information of a master machine and a slave machine, a welding machine current detection signal or welding state information of the welding machines;
determining master-slave machine judgment information of the welding machine according to the master-slave machine information, the welding machine current detection signal or the welding state information of the welding machine and outputting the master-slave machine judgment information;
when the information of the master and the slave machines is that the master machine exists, the rest welding machines except the master machine are slave machines; when the information of the master and the slave machines is no master machine, judging one welding machine with current detection as a master machine and the other welding machines as slave machines from all welding machines; when the information of the master and the slave machines is changed from the master machine to the non-master machine, judging one of the welding machines in the welding state as the master machine and the other welding machines as the slave machines;
and acquiring the AC waveform phase parameter output by the host, and adjusting the AC waveform phase corresponding to the slave according to the AC waveform phase parameter output by the host.
In an exemplary embodiment of the disclosure, when the master-slave information indicates that a master machine is present to be changed into no master machine, determining one of the welding machines in a welding state as the master machine, and determining the remaining welding machines as slave machines includes:
each welding machine in a welding state in all the welding machines is correspondingly configured with a random number;
presetting a master-slave judgment rule;
and according to the master-slave judgment rule, judging one welder as a master machine and the rest welders as slaves from all the welders in the welding state.
In an exemplary embodiment of the present disclosure, the preset master-slave determination rule includes:
presetting that the random number corresponding to each welding machine in a welding state is changed to a preset numerical value according to a rule;
and judging that the welding machine which is in a welding state and corresponds to the random number which is changed to the preset value according to the rule is the master machine, and the rest welding machines are slave machines.
In an exemplary embodiment of the disclosure, a maximum duration of the regular change of the random number to the preset value is less than a minimum period of an alternating current waveform of the welder.
In an exemplary embodiment of the disclosure, the method for coordinating and controlling multiple welding machines further includes:
acquiring master-slave machine judgment information corresponding to the welding machine, and determining the output and input states of the alternating current waveform phase corresponding to the welding machine according to the master-slave machine judgment information;
if the master-slave machine judgment information corresponding to the welding machine is the master machine, the alternating current waveform phase corresponding to the welding machine is in an output state; and if the information of the master-slave machine corresponding to the welding machine is judged to be the slave machine, the alternating current waveform phase corresponding to the welding machine is in an input state.
In an exemplary embodiment of the present disclosure, the obtaining of the ac waveform phase parameter output by the master, and adjusting the ac waveform phase corresponding to the slave according to the ac waveform phase parameter output by the master includes:
acquiring and outputting a phase difference between an alternating current waveform phase parameter output by the host and a current alternating current waveform phase of the slave;
comparing the phase difference with a preset phase difference;
when the phase difference is larger than the preset phase difference, adjusting the corresponding alternating current waveform phase of the slave according to the phase difference; and when the phase difference is less than or equal to the preset phase difference, outputting the current alternating current waveform phase of the slave.
In an exemplary embodiment of the disclosure, when the master-slave information is no master, determining one of the welders as a master and the other welders as slaves includes:
and acquiring a current detection signal of each welding machine, and judging that the welding machine which firstly acquires the current detection signal is a master machine and the other welding machines are slave machines.
According to a first aspect of the present disclosure, there is provided a multiple welder coordination control system, comprising:
the acquisition module is configured for each welding machine and used for acquiring information of a master machine and a slave machine, a current detection signal of the welding machine or welding state information of the welding machine;
the judging module is configured on each welding machine and used for determining and outputting the judging information of the master-slave machine of the welding machine according to the information of the master-slave machine, the current detection signal of the welding machine or the welding state information of the welding machine; when the information of the master and the slave machines is that the master machine exists, determining that the welding machine is the slave machine; when the information of the master machine and the slave machine is no master machine, the judging module of one welding machine with current detection in all the welding machines judges that the welding machine is the master machine, and the judging modules of the other welding machines judge that the welding machine is the slave machine; when the information of the master machine and the slave machine is changed from the master machine to the non-master machine, the judgment module of one welding machine in all the welding machines in the welding state judges that the welding machine is the master machine, and the judgment modules of the other welding machines judge that the welding machine is the slave machine.
In an exemplary embodiment of the present disclosure, the obtaining module includes a master-slave input unit and a current detection unit, the master-slave input unit is configured to obtain information of the master-slave machine, and the current detection unit is configured to obtain and output a current detection signal of the welding machine; the judging module comprises a judging unit and a master-slave output unit, the judging unit is used for determining master-slave machine judging information of the welder according to the master-slave machine information and the welding state information of the welder, and the master-slave output unit is used for outputting the master-slave machine judging information of the welder.
In an exemplary embodiment of the disclosure, the multiple welder coordination control system further includes:
the processing module is configured on each welding machine and used for acquiring the judgment information of the master machine and the slave machine corresponding to the welding machine, and determining the output and input states of the alternating current waveform phase of the welding machine according to the judgment information of the master machine and the slave machine and outputting the output and input states; if the master-slave machine judgment information corresponding to the welding machine is the master machine, the alternating current waveform phase of the welding machine is in an output state; if the master-slave machine judgment information corresponding to the welding machine is the slave machine, the alternating current waveform phase of the welding machine is in an input state;
and the coordination control module is used for acquiring the alternating current waveform phase parameters output by the host and adjusting the corresponding alternating current waveform phase of the slave according to the alternating current waveform phase parameters output by the host.
In an exemplary embodiment of the present disclosure, the coordination control module includes:
the phase input unit is used for acquiring an alternating current waveform phase parameter output by the host;
the calculating unit is used for acquiring and outputting a phase difference between the alternating current waveform phase parameter output by the host and the current alternating current waveform phase of the slave;
the phase control unit is used for receiving the phase difference output by the calculation unit and coordinately controlling the alternating current waveform phase of the welding machine;
and the phase output unit is used for outputting the phase parameters of the alternating current waveform of the welding machine.
The method for coordinately controlling the plurality of welding machines is used for coordinately controlling the plurality of welding machines to weld the same workpiece. One welder is determined to be a master machine and the other welders are slave machines in the multiple welders, the phases of alternating current waveforms of the master machine and the slave machines are coordinated and adjusted to be consistent, and the technical problem that alternating current waveforms of the multiple welders are interfered with each other is solved. In the method, before determining the master-slave machine judgment information of the welding machine, the master-slave machine information, the welding machine current detection signal or the welding state information of the welding machine are obtained. When the master-slave machine information is that the master machine exists, the rest welding machines except the master machine are slave machines. When the information of the master machine and the slave machine is no master machine, one of the welding machines with the current detection is judged to be the master machine, and the other welding machines are the slave machines. And when the information of the master and the slave machines is changed from the master machine to the non-master machine, judging that one welding machine is the master machine and the other welding machines are slave machines from all welding machines in the welding state. The method always keeps one welding machine as a host machine, and avoids the problem of disordered phase coordination. In addition, the method is not only suitable for the initial welding condition of a plurality of welding machines, but also suitable for the condition that the welding machine which is initially determined as the main machine suddenly stops working in the welding process. When the initial host or the previous host suddenly stops working, the method provided by the disclosure can determine one host from all the welding machines in the welding state in time so as to ensure that one welding machine is always used as the host and the other welding machines are used as slaves in the whole welding process, thereby keeping the phases of the host and the slaves consistent, maintaining the welding effect and ensuring the welding quality.
Drawings
The above and other features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
FIG. 1 is a flow diagram illustrating a method for coordinated control of multiple welders according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a multi-welder coordinated control system of an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of an acquisition device according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a determination device according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a cooperative control apparatus according to an embodiment of the present disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure.
In the drawings, the thickness of regions and layers may be exaggerated for clarity. The same reference numerals denote the same or similar structures in the drawings, and thus detailed descriptions thereof will be omitted.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the primary technical ideas of the disclosure.
The terms "a," "an," "the," and the like are used to denote the presence of one or more elements/components/parts; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. The terms "first" and "second," etc. are used merely as labels, and are not limiting on the number of their objects.
In the related technology, when a plurality of welding machines are used for welding the same workpiece, one welding machine is set as a master machine in advance in the plurality of welding machines, the other welding machines are slave machines, and the phases of the slave machines are consistent with the phases of the master machine, so that the technical problem of mutual influence among the plurality of welding machines is solved. However, in the process of welding machines, the welding machines may be in a welding state or a non-welding state at different times, and the initially set main machine may not be in the welding state all the time. When the initially set main machine stops welding suddenly, the method in the related art cannot determine a new main machine in time, so that mutual interference among all welding machines is caused, and the welding effect is influenced.
As shown in fig. 1, an embodiment of the present disclosure provides a method for coordinating and controlling multiple welding machines, including the following steps:
s100, acquiring master-slave machine information, a welding machine current detection signal or welding state information of a welding machine;
s200, determining and outputting master-slave judgment information of the welding machine according to the master-slave information, the welding machine current detection signal or the welding state information of the welding machine;
step S300, when the information of the master and the slave machines is that the master machine exists, the rest welding machines except the master machine are slave machines; when the information of the master and the slave machines is no master machine, judging one welding machine with current detection as a master machine and the other welding machines as slave machines from all welding machines; when the information of the master and the slave machines is changed from the master machine to the non-master machine, judging one of the welding machines in the welding state as the master machine and the other welding machines as the slave machines;
and step S400, acquiring the AC waveform phase parameter output by the host, and adjusting the AC waveform phase corresponding to the slave according to the AC waveform phase parameter output by the host.
The method for coordinately controlling the plurality of welding machines is used for coordinately controlling the plurality of welding machines to weld the same workpiece. One of the welding machines is determined as a master machine, the other welding machines are determined as slave machines, the phases of alternating current waveforms of the master machine and the slave machines are coordinated and adjusted to be consistent, and the technical problem that the alternating current waveforms of the welding machines are mutually interfered is solved. In the method, before determining the master-slave machine judgment information of the welding machine, the master-slave machine information, the welding machine current detection signal or the welding state information of the welding machine are obtained. When the master-slave machine information is that the master machine exists, the rest welding machines except the master machine are slave machines. When the information of the master machine and the slave machine is no master machine, one of the welding machines with the current detection is judged to be the master machine, and the other welding machines are the slave machines. And when the information of the master and the slave machines is changed from the master machine to the non-master machine, judging that one welding machine is the master machine and the other welding machines are slave machines from all welding machines in the welding state. The method always keeps one welding machine as a host machine, and avoids the problem of phase coordination disorder. In addition, the method is not only suitable for the initial welding condition of a plurality of welding machines, but also suitable for the condition that the welding machine which is initially determined as the main machine suddenly stops working in the welding process. When the initial main machine or the previous main machine suddenly stops working, the method provided by the disclosure can determine a main machine from all the welding machines in the welding state in time so as to ensure that one welding machine is always used as the main machine and the other welding machines are used as the slave machines in the whole welding process, thereby keeping the phases of the main machine and the slave machines consistent, maintaining the welding effect and ensuring the welding quality.
The following describes in detail the steps of a multiple welder coordination control method provided by the embodiment of the present disclosure with reference to the accompanying drawings:
in step S100, information of a master/slave machine, a welding machine current detection signal, or welding state information of a welding machine is acquired.
The multi-welder coordinated control method is used for performing coordinated control on a plurality of welders when the plurality of welders weld the same workpiece. When a plurality of welding machines weld the same workpiece, one of the welding machines is determined as a master machine, and the other welding machines are determined as slave machines. In some embodiments of the present disclosure, the master-slave information indicates whether there is a master in the multiple welding machines. For example, 10 welders weld the same workpiece, and the master-slave information indicates whether one of the 10 welders is determined as the master, which is embodied as having the master, not having the master, or having the master converted into not having the master. The main machine-to-no main machine conversion means that one of the multiple welding machines is the main machine, but the welding machine stops working later, the main machine is converted into the slave machine, the overall system of the multiple welding machines is converted from the main machine-to-no main machine state, and the corresponding main machine-to-slave machine information shows that the main machine is converted into the no main machine. Of course, the master-slave information may also include the corresponding information of the specific master, slave and welder. For example, which welder is the master and which welder is the slave among a plurality of welders. Specifically, for example, in 10 welding machines, the 3 rd welding machine is the master machine, and the remaining 9 welding machines are slave machines, or all the welding machines in 10 welding machines are slave machines without master machines.
The current detection signal of the welding machine comprises whether the current of the welding machine is detected or not and the sequence of the current detected by the welding machine. For example, in 10 welding machines, the current detection signal includes which welding machines have current detection in the 10 welding machines, and also includes the sequence of the current detection in the 10 welding machines. Different welding machines have a sequence when being started, so that the current detection also has a corresponding sequence.
The welding state information of the welding machine indicates whether the welding machine is in a welding state, and if the welding machine is not in the welding state, the welding machine is in a non-welding state. The welding state means that the welding machine is in an open state to weld the workpiece. The non-welding state means that the welding machine is in a closed state and does not weld the workpiece. The welding status information of the welder can be specifically determined by detecting a current sense signal in the welder. If the welder can detect the current, the welder is proved to have the current to pass through, the workpiece can be welded, and the welder can be determined to be in a welding state. If the welder does not detect the current, the welder is proved to have no current passing through and can not weld the workpiece, and the welder can be determined to be in a non-welding state. Of course, the determination of whether the welder is in the welding state may be performed in other manners, such as by detecting a voltage signal, a pulse signal, and the like.
In step S200, determining and outputting master-slave determination information of the welder according to the master-slave information, the welder current detection signal or the welder welding state information.
The information of the master and the slave refers to the existence of the master, the absence of the master or the change from the existence of the master to the absence of the master, and the welding state information of the welding machine refers to the welding state or the non-welding state of the welding machine. The master-slave determination information indicates whether the welder is determined to be a master or a slave. In the step, the welding machines are respectively judged according to the conditions that the host machine exists, the host machine does not exist and the host machine is changed into the host machine does not exist in the multiple welding machines, so that the condition that the multiple host machines are judged to appear in the multiple welding machines can be effectively avoided.
In step S300, when the master-slave information indicates that there is a master, the remaining welders except the master are slaves; when the information of the master and the slave machines is no master machine, judging one welding machine with current detection as a master machine and the other welding machines as slave machines from all welding machines; and when the information of the master and the slave machines is changed from the master machine to the non-master machine, judging that one welding machine is the master machine and the other welding machines are slave machines from all welding machines in the welding state.
And when the master-slave machine information is that the master machine exists, the rest welding machines except the master machine are slave machines. It should be noted that, when the master/slave information indicates that there is a master, all the remaining welders are determined as slaves regardless of whether there is a current detection or whether the remaining welders are in a welding state. For example, in 10 welding machines, when the master-slave machine information shows that the master machine is present, all of the other 9 welding machines except the master machine are slave machines.
When the master-slave machine information is no master machine, one welder with the current detection is judged as the master machine from all the welders, and the rest welders are slave machines. In some embodiments of the present disclosure, the current detection signal of each welding machine may be specifically obtained, and one of the welding machines is determined as the master machine according to the sequence of the current detection, if the welding machine that first obtains the current detection signal is determined as the master machine, and the other welding machines are determined as the slave machines. In some embodiments of the present disclosure, when all of the welders are not welding the workpiece, i.e., all of the welders are in the non-welding state, all of the welders may be set as slaves, and the state may be set as the initial state. And then starting a plurality of welding machines, detecting current, selecting one welding machine as a master machine, judging in a mode of detecting a current detection signal, determining the master machine according to the sequence of obtaining the current detection signal of each welding machine, and judging the welding machine which detects the current detection signal firstly as the master machine and the other welding machines as slave machines if the other welding machines detect the current detection signal firstly. The determined host at this time may be defined as the initial host. It should be noted that, in the initial state, as long as one welder is determined as the master, that is, the initial master, the remaining welders are determined as slaves regardless of whether current is detected. In special cases, even if some welding machines judge the welding machines as the master machines under the condition that the initial master machines exist, the welding machines can be changed into the slave machines according to the information of the existing master machines. This case is merely illustrative of one particular situation that may arise during practical use and is not intended to limit the present disclosure.
Of course, in other embodiments of the present disclosure, the determination method of the initial host may also perform the determination by detecting a voltage signal, a pulse signal, and the like, which is not limited specifically.
When the master-slave machine information is changed from master to no master, one of the welding machines in the welding state is judged to be the master, and the other welding machines are judged to be the slaves. When the initial master machine or the welder judged as the master machine is changed from the welding state to the non-welding state, the welder is also changed from the master machine to the slave machine correspondingly. At the moment, the information of the master and the slave machines of the plurality of welding machines is changed into the information of no master machine, and at the moment, a new master machine is determined again according to the step. It should be noted that the remaining welders include both the remaining welders that are not determined as the master in the welding state and the welders that are not in the welding state. If the master-slave information of the overall system of 10 welding machines is that the master machine is changed into the slave machine when the master machine of the 10 welding machines is changed into the slave machine, and 8 welding machines of the 10 welding machines are in the welding state, it is determined that one of the 8 welding machines in the welding state is the master machine, and the remaining 9 welding machines except the master machine are the slave machines, and it should be noted here that the 9 slave machines include 7 welding machines in the welding state and 2 welding machines in the non-welding state. The specific determination method will be described in detail later. In the step, one host computer is always kept in a plurality of welding machines, and the rest are slave computers, so that a foundation is provided for subsequent coordination of phases of the host computer and the slave computers.
In some embodiments of the present disclosure, in step S300, when the master/slave information indicates that there is a master machine to be changed into no master machine, determining one of the welding machines in the welding state as the master machine, and determining the remaining welding machines as the slave machines includes:
step S310, each welding machine in a welding state in all the welding machines is correspondingly configured with a random number;
step S320, presetting a master-slave judgment rule;
and step S330, according to the master-slave judgment rule, judging one welder as a master machine and the rest welders as slave machines from all the welders in the welding state.
In step S310, each of all the welders in the welding state is configured with a random number. The random number may be any number.
The random numbers corresponding to any two welding machines are different. The random number can be obtained by various methods. For example, when there are 10 welders, the range of the generated random number may be any integer greater than 10, and in order to make the random numbers corresponding to any two welders different, the range of the random number is set to 1 to 100, and then the random number corresponding to 10 welders may be randomly sampled from 100 integers to obtain the random number corresponding to each welder. In other embodiments of the present disclosure, a range of random numbers may be generated using the Rand () function, such as lnt (Rand (). M-N +1) + N, to generate random numbers in the range of N M. In still other embodiments of the present disclosure, a random number may be generated by using a timer, for example, a 1us timer may be used to accumulate a variable a (with an initial value of 1), and when the variable a is greater than or equal to N, a is assigned to 1, so that a is a random value in a range from 1 to N at a certain time. When N is larger, the probability that the random numbers of different welding machines are the same is very small. The generation of the random number may be realized by other methods, which are not described herein.
Step S320, a master-slave determination rule is preset.
And presetting a master-slave machine judgment rule, namely setting a rule for judging that the welding machine is a master machine or a slave machine.
In some embodiments of the present disclosure, step S320 includes:
step S321, presetting that the random number corresponding to each welding machine in the welding state changes to a preset value according to a rule;
step S322, the welder which is in the welding state and the random number is changed to the preset value according to the rule is judged to be the master, and the rest welders are slaves.
In step S321, it is preset that the random number corresponding to each welding machine in the welding state is changed to a preset value according to a rule.
The preset random number is regularly changed into a preset value, the preset value is suitable for all the welding machines, and the preset value of all the welding machines is the same. For example, when the random number of each welding machine is any integer within the range of 1-100, the preset value can be set to 0, and the rule is changed to decrease according to a certain rule. The random number corresponding to each welder in the welding state can be decreased to 0 regularly. It should be noted that the preset value is not limited, and may be any value other than 0. The change rule is not limited, and the change rule can be increased progressively according to the rule or changed randomly according to a certain formula.
In step S322, it is determined that the welder in the welding state and corresponding to the random number that is changed to the preset value according to the rule is the master, and the other welders are slaves.
And if the random numbers corresponding to the welding machines are different, the time for changing the random number of each welding machine to the preset value according to a certain rule is also different. In the step, one of the slave machines is judged as the master machine, and the other slave machines are judged according to the sequence of the random number changing to the preset value. In some embodiments of the present disclosure, the welder corresponding to the random number that is determined to be in the welding state and is changed to the preset value according to the rule first is the master, and the other welders are slaves. For example, when the random number of each welding machine is any integer within the range of 1-100, the preset value can be set to 0, and the rule is changed to decrease. The random number corresponding to each welder in the welding state is decreased to 0 according to a certain rule. Because the random number of each welding machine is different, the time for the random number corresponding to each welding machine to be decreased to 0 is different. And judging the welder of which the random number is firstly reduced to 0 as a master machine, and taking the rest welders as slave machines.
In some embodiments of the present disclosure, the maximum duration of the regular change of the random number to the preset value is less than the minimum period of the ac waveform of the welder. In the present disclosure, the random numbers are all within a range, and the duration of time that different random numbers within the range change to a preset value is different. The maximum time for the random number to change to the preset value according to the rule is the longest time for the random number in the range to change to the preset value according to the rule. If the preset value of the random number in the range of 1-100 is 0 and the change rule is 1us and 1 is decreased, the longest time required for the random number in the range of 1-100 to change to 0 is 100 us. The minimum period of the ac waveform refers to the shortest time duration for generating an ac waveform. The maximum time length of the random number which is changed to the preset value according to the rule is less than the minimum period of the alternating current waveform of the welding machine, and the host can be determined in one alternating current waveform period. For example, if the maximum time period of the random number changing to the preset value regularly is 100us, the minimum period of the alternating current waveform of the welding machine is 105us, and the maximum time period of the random number changing to the preset value regularly is less than the minimum period of the alternating current waveform of the welding machine, the host can be determined within 105 us. In the method, each welding machine can output the current alternating current waveform phase according to the welding machine in the time before the host computer determines, and each welding machine can output the alternating current waveform phase consistent with the host computer in the next alternating current waveform after the host computer determines. The method can determine the host machine in time, and is beneficial to adjusting the phase output of the host machine and the slave machine in time, thereby ensuring the welding effect.
In step S330, according to the master-slave determination rule, one of the welders in the welding state is determined as the master, and the other welders are determined as the slaves.
According to the specific master-slave machine judgment rule in step S320, one of the welding machines in the welding state is judged as the master machine, and the other welding machines are judged as the slave machines, so that the judgment of the master machine and the slave machines is completed.
In some embodiments of the present disclosure, the method for coordinating and controlling multiple welding machines further includes:
300-1, acquiring master-slave machine judgment information corresponding to the welding machine, and determining the output and input states of the alternating current waveform phase corresponding to the welding machine according to the master-slave machine judgment information;
step 300-2, if the master-slave machine judgment information corresponding to the welding machine is a master machine, the alternating current waveform phase corresponding to the welding machine is in an output state; and if the master-slave machine judgment information corresponding to the welder is the slave machine, the alternating current waveform phase corresponding to the welder is in an input state.
Step S300-1 and step S300-2 are located between step S300 and step S400.
In step S300-1, master-slave machine determination information corresponding to the welder is obtained, and an output-input state of an ac waveform phase corresponding to the welder is determined according to the master-slave machine determination information. The master-slave determination information indicates whether the welder is determined to be a master or a slave. When the master-slave machine judgment information is determined, whether the alternating current waveform phase of the corresponding welding machine is in an output state or an input state can be determined according to whether the welding machine is a master machine or a slave machine.
In step S300-2, if the master-slave determination information corresponding to the welder is the master, the ac waveform phase corresponding to the welder is in an output state; and if the master-slave machine judgment information corresponding to the welder is the slave machine, the alternating current waveform phase corresponding to the welder is in an input state. If the welder is the master machine, the AC waveform phase corresponding to the welder is in an output state, that is, the AC waveform phase parameter of the welder can be transmitted to other slave machines. If the welder is a slave machine, the alternating current waveform phase corresponding to the welder is in an input state, namely the welder can receive the alternating current waveform phase parameter transmitted by the host machine and correspondingly adjust the alternating current waveform phase of the welder according to the alternating current waveform phase parameter transmitted by the host machine in the subsequent process.
In step S400, the ac waveform phase parameter output by the master is obtained, and the ac waveform phase corresponding to the slave is adjusted according to the ac waveform phase parameter output by the master. In the step, the alternating current waveform phase of the slave is adjusted according to the alternating current waveform phase parameter of the master, so that the alternating current waveform phases of the master and the slave are coordinated to be consistent. Specifically, the master machine can output an ac waveform according to the ac frequency and the cleaning width set by the master machine, and in order to make the ac frequency and the cleaning width of the master machine and the slave machine the same, the master machine can output the ac frequency and the cleaning width of the master machine and the slave machine to other welding machines, that is, the slave machines, or of course, the ac frequency and the cleaning width of all the welding machines may be preset to be the same by other methods, for example. In order to make the AC waveform phases of the master machine and the slave machine consistent, the slave machine receives the AC waveform phase information output by the master machine and adjusts the AC waveform phase of the slave machine according to the information.
In some embodiments of the present disclosure, step S400 includes:
step S410, acquiring and outputting a phase difference between an alternating current waveform phase parameter output by the host and a current alternating current waveform phase of the slave;
step S420, comparing the phase difference with a preset phase difference;
step S430, when the phase difference is larger than the preset phase difference, adjusting the corresponding alternating current waveform phase of the slave according to the phase difference; and when the phase difference is less than or equal to the preset phase difference, outputting the current alternating current waveform phase of the slave machine.
In step S410, a phase difference between the ac waveform phase parameter output by the master and the current ac waveform phase of the slave is obtained and output. The slave receives the alternating current waveform phase information output by the host, compares the alternating current waveform phase information with the current alternating current waveform phase of the slave, calculates and obtains the phase difference between the alternating current waveform phase information and the current alternating current waveform phase, and outputs the phase difference result.
In step S420, the phase difference is compared with a preset phase difference. Comparing the phase difference obtained by calculation in step S410 with a preset phase difference, and subsequently adjusting the phase condition of the ac waveform of the slave according to the comparison result.
In step S430, when the phase difference is greater than the preset phase difference, adjusting an ac waveform phase corresponding to the slave according to the phase difference; and when the phase difference is less than or equal to the preset phase difference, outputting the current alternating current waveform phase of the slave machine. Specifically, when the phase difference obtained in step S410 is greater than the preset phase difference, the phase of the ac waveform of the slave itself is adjusted so that the phase of the slave ac waveform is consistent with the phase of the ac waveform of the master when the slave outputs the next ac waveform. When the phase difference obtained in step S410 is less than or equal to the preset phase difference, the slave may continue to output its current ac waveform phase without adjusting the ac waveform phase of the slave.
As shown in fig. 2, the present disclosure also provides a multiple welder coordination control system 100, including:
an obtaining module 110 configured to each welding machine, for obtaining information of a master/slave machine, a detection signal of a current of the welding machine, or welding state information of the welding machine;
the judging module 120 is configured for each welding machine, and is configured for determining and outputting the master-slave machine judging information of the welding machine according to the master-slave machine information and the welding state information of the welding machine; when the master-slave machine information is that a master machine exists, determining that the welding machine is a slave machine; when the information of the master machine and the slave machine is no master machine, the judging module of one welding machine with current detection in all the welding machines judges that the welding machine is the master machine, and the judging modules of the other welding machines judge that the welding machine is the slave machine; when the information of the master machine and the slave machine is changed from the master machine to the non-master machine, the judging module of one of the welding machines in the welding state judges that the welding machine is the master machine, and the judging modules of the other welding machines judge that the welding machine is the slave machine.
The processing module 130 is configured for each welding machine, and is configured to obtain master-slave machine judgment information corresponding to the welding machine, and determine and output an output-input state of an alternating-current waveform phase of the welding machine according to the master-slave machine judgment information; if the master-slave machine judgment information corresponding to the welding machine is the master machine, the alternating current waveform phase of the welding machine is in an output state; if the master-slave machine judgment information corresponding to the welding machine is the slave machine, the alternating current waveform phase of the welding machine is in an input state;
and the coordination control module 140 is configured to obtain an ac waveform phase parameter output by the master, and adjust an ac waveform phase corresponding to the slave according to the ac waveform phase parameter output by the master.
In some embodiments of the present disclosure, as shown in fig. 3, the obtaining module 110 includes a master-slave input unit 111 and a current detecting unit 112, the master-slave input unit 111 is used for obtaining master-slave machine information, and the current detecting unit 112 is used for obtaining a current detection signal of the welder. Each welder is provided with a master-slave input unit 111, and a master-slave input unit 112 is used for receiving master-slave information, namely, a master machine or no master machine exists in a plurality of welders. The current detection signal can be used for judging the welding state information of the welding machine, namely whether the welding machine is in a welding state or not. If the current detection unit 112 of the welding machine can detect the current of the welding machine, it indicates that the welding machine is in the welding state, and if the current detection unit 112 of the welding machine does not detect the current of the welding machine, it indicates that the welding machine is in the non-welding state.
As shown in fig. 4, the determining module 120 includes a determining unit 121 and a master-slave output unit 122, and the determining unit 121 is configured to determine master-slave determination information of the welder according to the master-slave information and the welding state information of the welder. The master-slave output unit 122 is used for outputting master-slave machine judgment information of the welder. Specifically, when the master-slave information shows that there is a master, the determining unit 121 determines that the welder is a slave. When the master-slave machine information shows that there is no master machine, the determining unit 121 may determine the master-slave machine determining information of the welder according to the master-slave machine determining rule recorded in the multiple welder coordination control method or the determining method of the initial master machine. The master-slave output unit 122 is used for outputting master-slave machine determination information of the welder where the welder is located, namely outputting whether the welder where the welder is located is a master machine or a slave machine.
The processing module 130 is configured for each welding machine, and is configured to obtain the master-slave machine determination information corresponding to the welding machine, and determine the output-input state of the alternating-current waveform phase of the welding machine according to the master-slave machine determination information and output the output-input state. If the master-slave machine judgment information corresponding to the welder is the master machine, the alternating current waveform phase of the welder is in an output state, namely when the welder is the master machine, the welder can output the self alternating current waveform phase parameters to all slave machines. If the master-slave machine judgment information corresponding to the welder is the slave machine, the alternating current waveform phase of the welder is in an input state, namely when the welder is the slave machine, the welder receives the alternating current waveform phase parameter output by the master machine.
As shown in fig. 5, the coordination control module 140 includes a phase input unit 141, a calculation unit 142, a phase control unit 143, and a phase output unit 144. The phase input unit 141 is configured to obtain an ac waveform phase parameter output by the master, the calculation unit 142 is configured to obtain and output a phase difference between the ac waveform phase parameter output by the master and a current ac waveform phase of the slave itself, the phase control unit 143 is configured to receive the phase difference output by the calculation unit 142 and coordinate and control an ac waveform phase of the welder, and the phase output unit 144 is configured to output an ac waveform phase parameter of the welder.
The processing module 130 determines the output and input states of the ac waveform phase of the welder according to the master-slave determination information, and outputs the processing result to the coordination control module 140. When the welder is the master, the processing module 130 determines that the ac waveform phase of the welder is in the output state, and outputs the determination result to the coordination control module 140. The phase output unit 144 in the coordination control module 140 outputs the ac waveform phase parameter of the welder to other welders, i.e., the slave machines. When the welder is a slave, the processing module 130 determines that the phase of the ac waveform of the welder is in an input state, and outputs the determination result to the coordination control module 140. The phase input unit 141 in the coordination control module 140 obtains the ac waveform phase parameter output by the master, and the calculating unit 142 calculates the phase difference between the ac waveform phase output by the master and the current ac waveform phase of the welding machine (slave), and transmits the phase difference to the phase control unit 143. The phase control unit 143 receives the phase difference output by the calculating unit 142 and coordinately controls the ac waveform phase of the welder, specifically, the coordination control unit 143 may set a preset phase difference, where the preset phase difference is a phase difference threshold, the coordination control unit 143 compares the phase difference between the ac waveform phase output by the host and the current ac waveform phase of the welder (slave) with the preset phase difference, and when the obtained phase difference is greater than the preset phase difference, the coordination control unit 143 adjusts the ac waveform phase of the welder, so that the ac waveform phase of the welder is consistent with the ac waveform phase of the host when the welder outputs the next ac waveform. When the obtained phase difference is less than or equal to the preset phase difference, the coordination control unit 143 controls the welding machine to continuously output the current ac waveform phase of the welding machine.
It should be noted that although the steps of the methods of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that the steps must be performed in this particular order or that all of the depicted steps must be performed to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc., are all considered part of this disclosure.
It is to be understood that the disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the present specification. The present disclosure is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications are within the scope of the present disclosure. It should be understood that the disclosure disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present disclosure. The embodiments of this specification illustrate the best mode known for carrying out the disclosure and will enable those skilled in the art to utilize the disclosure.

Claims (8)

1. A multi-welder coordinated control method is characterized by comprising
Acquiring master-slave machine information, a welding machine current detection signal or welding state information of a welding machine;
determining and outputting master-slave machine judgment information of the welding machine according to the master-slave machine information, the welding machine current detection signal or the welding state information of the welding machine;
when the information of the master and the slave machines is that the master machine exists, the rest welding machines except the master machine are slave machines; when the information of the master and the slave machines is no master machine, judging one welding machine with current detection as a master machine and the other welding machines as slave machines from all welding machines; when the information of the master and the slave machines is changed from the master machine to the non-master machine, judging one of the welding machines in the welding state as the master machine and the other welding machines as the slave machines;
acquiring an alternating current waveform phase parameter output by the host, and adjusting the corresponding alternating current waveform phase of the slave according to the alternating current waveform phase parameter output by the host;
when the information of the master and the slave machines is changed from the master machine to the non-master machine, one of the welding machines in the welding state is judged to be the master machine, and the rest of the welding machines are the slave machines, wherein the following steps are included:
each welding machine in a welding state in all the welding machines is correspondingly configured with a random number;
presetting that the random number corresponding to each welding machine in a welding state is changed to a preset numerical value according to a rule;
and judging that the welder which is in a welding state and corresponds to the random number which is changed to the preset value according to the rule at first is a master machine, and the rest of the welders are slave machines.
2. The method of claim 1, further comprising:
acquiring master-slave machine judgment information corresponding to the welding machine, and determining the output and input states of the alternating current waveform phase corresponding to the welding machine according to the master-slave machine judgment information;
if the master-slave machine judgment information corresponding to the welding machine is the master machine, the alternating current waveform phase corresponding to the welding machine is in an output state; and if the master-slave machine judgment information corresponding to the welder is the slave machine, the alternating current waveform phase corresponding to the welder is in an input state.
3. The method for coordinately controlling a plurality of welding machines according to claim 1, wherein the step of obtaining the ac waveform phase parameter outputted from the master and adjusting the ac waveform phase corresponding to the slave according to the ac waveform phase parameter outputted from the master comprises:
acquiring and outputting a phase difference between an alternating current waveform phase parameter output by the host and a current alternating current waveform phase of the slave;
comparing the phase difference with a preset phase difference;
when the phase difference is larger than the preset phase difference, adjusting the corresponding alternating current waveform phase of the slave according to the phase difference; and when the phase difference is less than or equal to the preset phase difference, outputting the current alternating current waveform phase of the slave.
4. The method of claim 1, wherein when the master-slave information indicates no master, determining one of the welders as the master and the remaining welders as slaves comprises:
and acquiring a current detection signal of each welding machine, and judging that the welding machine which firstly acquires the current detection signal is a master machine and the other welding machines are slave machines.
5. A multiple welder coordinated control system, characterized by comprising:
the acquisition module is configured on each welding machine and used for acquiring information of a master machine and a slave machine, a current detection signal of the welding machine or welding state information of the welding machine;
the judging module is configured on each welding machine and used for determining and outputting the judging information of the master-slave machine of the welding machine according to the information of the master-slave machine, the current detection signal of the welding machine or the welding state information of the welding machine; when the information of the master and the slave machines is that the master machine exists, determining that the welding machine is the slave machine; when the information of the master machine and the slave machine is no master machine, the judging module of one welding machine with current detection in all the welding machines judges that the welding machine is the master machine, and the judging modules of the other welding machines judge that the welding machine is the slave machine; when the information of the master and the slave machines is changed from the master machine to the non-master machine, the judging module of one welding machine in all welding machines in the welding state judges that the welding machine is the master machine, and the judging modules of the other welding machines judge that the welding machine is the slave machine;
when the information of the master and the slave machines is changed from the master machine to the non-master machine, one of the welding machines in the welding state is judged to be the master machine, and the rest of the welding machines are the slave machines, wherein the following steps are included:
each welding machine in a welding state in all the welding machines is correspondingly configured with a random number;
presetting that the random number corresponding to each welding machine in a welding state is changed to a preset numerical value according to a rule;
and judging that the welder which is in a welding state and corresponds to the random number which is changed to the preset value according to the rule at first is a master machine, and the rest of the welders are slave machines.
6. The system of claim 5, wherein the obtaining module comprises a master-slave input unit and a current detection unit, the master-slave input unit is configured to obtain the information of the master-slave machine, and the current detection unit is configured to obtain and output a current detection signal of the welder; the judging module comprises a judging unit and a master-slave output unit, the judging unit is used for determining master-slave machine judging information of the welder according to the master-slave machine information and the welding state information of the welder, and the master-slave output unit is used for outputting the master-slave machine judging information of the welder.
7. The multiple welder coordinated control system of claim 6, wherein the multiple welder coordinated control system further comprises:
the processing module is configured on each welding machine and used for acquiring the judgment information of the master machine and the slave machine corresponding to the welding machine, and determining the output and input states of the alternating current waveform phase of the welding machine according to the judgment information of the master machine and the slave machine and outputting the output and input states; if the master-slave machine judgment information corresponding to the welding machine is the master machine, the alternating current waveform phase of the welding machine is in an output state; if the master-slave machine judgment information corresponding to the welding machine is the slave machine, the alternating current waveform phase of the welding machine is in an input state;
and the coordination control module is used for acquiring the alternating current waveform phase parameter output by the host and adjusting the corresponding alternating current waveform phase of the slave according to the alternating current waveform phase parameter output by the host.
8. The system of claim 7, wherein the coordinated control module comprises:
the phase input unit is used for acquiring the phase parameter of the alternating current waveform output by the host;
the calculating unit is used for acquiring and outputting a phase difference between the alternating current waveform phase parameter output by the host and the current alternating current waveform phase of the slave;
the phase control unit is used for receiving the phase difference output by the calculation unit and coordinately controlling the alternating current waveform phase of the welding machine;
and the phase output unit is used for outputting the phase parameters of the alternating current waveform of the welding machine.
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CN1215636C (en) * 2001-12-31 2005-08-17 艾默生网络能源有限公司 Method of establishing host machine in multi-module parallel system
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CN104950765B (en) * 2015-06-23 2017-09-22 合肥工业大学 A kind of inverter parallel system and its carrier synchronization method based on CAN
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CN106302066A (en) * 2016-08-26 2017-01-04 珠海格力电器股份有限公司 Without master-slave communication method and device
CN208713102U (en) * 2018-07-18 2019-04-09 华南理工大学 The adjustable high-power mariages synergic-pulsed MIG welding power-supply system of low-and high-frequency impulse phase
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