Excitation power supply control method and magnetic control welding device

Abstract

The invention provides an excitation power source control method and a magnetic control welding device, the magnetic control welding device comprises a welding magnetic control generation device, a welding power source, a welding current detection unit and a control unit, and the welding magnetic control generation device comprises an excitation power source and an excitation magnetic head; the welding power supply generates welding current; the welding current detection unit detects welding current and sends a welding current detection value to the control unit. Under the condition that the welding current detection value and the duration time of the welding current meet the preset excitation starting condition, the control unit controls the excitation power source to be started according to the welding current detection value, outputs excitation current and excitation frequency and periodically supplies power to the excitation magnetic head, so that the excitation magnetic head generates a magnetic field to optimize the welding process; and under the condition that the welding current detection value and the duration time of the welding current do not meet the preset excitation starting condition, the control unit controls the excitation power supply to be in a closed state. The welding quality and efficiency can be improved, and practicability, stability and reliability are high.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and provides a control method for an excitation power supply and a magnetron welding device. Background Art

[0002] In modern industrial production, aluminum alloys are widely used in the field of rail vehicles due to their excellent properties. However, traditional arc welding technology has many problems when welding long and thin-walled aluminum alloy components. For example, a large amount of heat input causes tissue damage and a decrease in strength performance, serious deformation causes stress concentration during post-weld repair, and poor accessibility of the closed structure causes incomplete fusion at the root and deterioration of fatigue performance. These problems seriously affect the welding quality and production efficiency. With the development of trains towards higher speed grades, the bottleneck of arc welding technology is further exacerbated, and it cannot meet the requirements of high-efficiency deep penetration welding. Summary of the Invention

[0003] The present invention provides a control method for an excitation power supply and a magnetron welding device to solve the defects of low welding quality and production efficiency in the existing arc welding technology. The present invention can improve the welding quality and efficiency, and has high practicability, stability and reliability.

[0004] The present invention provides a control method for an excitation power supply, which is applied to a magnetron welding device. The magnetron welding device includes a welding magnetron generating device, a welding power supply, a welding current detection unit and a control unit. The welding magnetron generating device includes an excitation power supply and an excitation magnetic head; the welding power supply is used to generate a welding current; the welding current detection unit is used to detect the welding current and send the welding current detection value to the control unit; the method includes: when the welding current detection value and the duration of the welding current meet a preset excitation opening condition, the control unit controls the excitation power supply to be turned on and outputs an excitation current and an excitation frequency, and periodically supplies power to the excitation magnetic head to enable the excitation magnetic head to generate a magnetic field to optimize the welding process; when the welding current detection value and the duration of the welding current do not meet the preset excitation opening condition, the control unit controls the excitation power supply to be in a closed state.

[0005] According to a control method for an excitation power supply provided by the present invention, the opening control program of the excitation power supply adopts a pre-trained neural network model. The pre-trained neural network model includes a primary input layer, a secondary input layer and a multi-layer perceptron; the primary input layer is used to input basic welding process parameters into the secondary input layer; the secondary input layer is used to input the welding current detection value and the basic welding process parameters into the multi-layer perceptron; the multi-layer perceptron is used to calculate and output the excitation current and the excitation frequency according to the welding current detection value and the basic welding process parameters.

[0006] According to an excitation power supply control method provided by the present invention, the preset excitation start condition is that the average welding current value is greater than the preset welding current value and the duration of the welding current is greater than the preset time.

[0007] According to an excitation power supply control method provided by the present invention, the magnetically controlled welding device further includes an excitation current detection unit; the excitation current detection unit is used to detect the excitation current and send the detected value of the excitation current to the control unit; the method further includes: when the detected value of the welding current, the duration of the welding current, and the detected value of the excitation current meet the preset normal excitation state condition, the control unit controls the welding power supply and the excitation power supply to work normally; when the detected value of the welding current, the duration of the welding current, and the detected value of the excitation current do not meet the preset normal excitation state condition, the control unit controls the welding power supply and the excitation power supply to stop working.

[0008] According to an excitation power supply control method provided by the present invention, the preset normal excitation state condition is that the preset excitation start condition is that the average welding current value is greater than the preset welding current value, the duration of the welding current is greater than the preset time, and the average excitation current value meets the preset normal excitation current range.

[0009] According to an excitation power supply control method provided by the present invention, the magnetically controlled welding device further includes a prompting module; the method further includes: when the detected value of the welding current, the duration of the welding current, and the detected value of the excitation current do not meet the preset normal excitation state condition, the control unit controls the prompting module to generate an abnormal prompting signal; the abnormal prompting signal is a signal for prompting welding abnormality.

[0010] According to an excitation power supply control method provided by the present invention, both the welding current detection unit and the excitation current detection unit are Hall current sensors.

[0011] According to an excitation power supply control method provided by the present invention, it further includes: obtaining the magnetic field intensity of the excitation magnetic head; when the magnetic field intensity does not meet the preset intensity value, adjusting the magnetic field intensity by controlling the excitation current of the excitation power supply so that the magnetic field intensity meets the preset intensity value.

[0012] The present invention also provides a magnetically controlled welding device, which includes a welding magnetic control generating device, a welding power supply, a welding current detection unit, and a control unit. The welding magnetic control generating device includes an exciting power supply and an exciting magnetic head; the welding power supply is used to generate a welding current; the welding current detection unit is used to detect the welding current and send the detected value of the welding current to the control unit; the exciting power supply is used to supply power to the exciting magnetic head; the exciting magnetic head is used to generate a magnetic field to optimize the welding process; the control unit is used to control the exciting power supply by using the above-mentioned exciting power supply control method.

[0013] A magnetically controlled welding device according to the present invention further includes an exciting current detection unit and a prompting module; the exciting current detection unit is used to detect the exciting current and send the detected value of the exciting current to the control unit; the prompting module is used to generate an abnormal prompting signal in the case of welding abnormality; the abnormal prompting signal is a signal for prompting welding abnormality.

[0014] An exciting power supply control method and a magnetically controlled welding device provided by the present invention. The magnetically controlled welding device includes a welding magnetic control generating device, a welding power supply, a welding current detection unit, and a control unit. The welding magnetic control generating device includes an exciting power supply and an exciting magnetic head; the welding power supply generates a welding current; the welding current detection unit detects the welding current and sends the detected value of the welding current to the control unit. When the detected value of the welding current and the duration of the welding current meet the preset exciting start condition, the control unit controls the exciting power supply to be turned on and outputs an exciting current and an exciting frequency, and supplies power to the exciting magnetic head periodically, so that the exciting magnetic head generates a magnetic field to optimize the welding process; when the detected value of the welding current and the duration of the welding current do not meet the preset exciting start condition, the control unit controls the exciting power supply to be in the off state. The present invention can improve the welding quality and efficiency, and has high practicability, stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is one of the flow schematic diagrams of the exciting power supply control method provided by the present invention.

[0017] Figure 2 is the second flow schematic diagram of the exciting power supply control method provided by the present invention.

[0018] Figure 3It is the third schematic flow chart of the excitation power supply control method provided by the present invention.

[0019] Figure 4 It is a schematic diagram of the Tesla meter provided by the present invention.

[0020] Figure 5 It is a schematic diagram of magnetic field strength detection provided by the present invention.

[0021] Figure 6 It is a schematic structural diagram of the electronic device provided by the present invention. Specific Embodiments

[0022] The following further describes in detail the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] Although large-area robotic automatic welding has been achieved for the side walls, roofs, and floors of train car bodies, limited by traditional arc welding technology, there are problems such as large heat input leading to tissue damage and a decrease in strength performance, serious deformation leading to stress concentration caused by post-weld repair, and poor accessibility of closed structures leading to lack of penetration at the root and deterioration of fatigue performance. With the development of trains towards higher speed grades, the bottleneck of arc welding technology has been further exacerbated, and it is impossible to further improve the joint performance, increase the penetration rate and welding efficiency of joints under harsh working conditions, and reduce welding deformation and welding costs. There is an urgent need to develop an efficient deep penetration welding method to solve the problems that cannot be overcome by traditional arc welding.

[0024] Please refer to Figure 1 , Figure 1 It is one of the schematic flow charts of the excitation power supply control method provided by the present invention.

[0025] The present invention provides an excitation power supply control method, which is applied to a magnetron welding device. The magnetron welding device includes a welding magnetron generating device, a welding power supply, a welding current detection unit, and a control unit. The welding magnetron generating device includes an excitation power supply and an excitation magnetic head; the welding power supply is used to generate a welding current; the welding current detection unit is used to detect the welding current and send the detected value of the welding current to the control unit; The excitation power supply control method includes: 101: When the detected value of the welding current and the duration of the welding current meet the preset excitation start condition, the control unit controls the excitation power supply to turn on and output an excitation current and an excitation frequency, and periodically supplies power to the excitation magnetic head, so that the excitation magnetic head generates a magnetic field to optimize the welding process; 102: When the detected value of the welding current and the duration of the welding current do not meet the preset excitation start condition, the control unit controls the excitation power supply to be in the off state.

[0026] To solve the technical problems existing in the prior art, a micro welding magnetic control generating device is added to the front nozzle of the manual arc welding gun of the automatic welding machine in the magnetic control welding device of the present invention. The electromagnetic force generated by the welding magnetic control generating device, through the synergistic effect of the welding parameters of the welding machine and the excitation parameters output by the excitation power supply, respectively regulates the molten pool flow and droplet transfer in the horizontal, vertical and vertical directions, optimizes the arc energy distribution, increases the penetration depth, increases the molten pool swing, and achieves the engineering effects of improving the welding speed, enhancing the root penetration, improving the weld formation, reducing the welding heat input, reducing the welding deformation of parts, and reducing the manufacturing cost. After the magnetic control welding device of the present invention is integrated with the automatic welding equipment of the production line, the excitation parameters can be adaptively adjusted in coordination with the welding parameters, which is convenient for continuous operation according to different working conditions and avoids work suspension.

[0027] Specifically, the present invention provides a method for controlling an excitation power supply. A welding current detection unit detects the welding current of the welding power supply. A control unit determines whether the detected value of the welding current and the duration of the welding current meet a preset excitation start condition.

[0028] When the detected value of the welding current and the duration of the welding current meet the preset excitation start condition, the control unit determines that the welding process starts, automatically turns on the excitation power supply, and activates the excitation parameter control program. The control unit controls the excitation power supply to turn on and output an excitation current and an excitation frequency according to the detected value of the welding current, and periodically supplies power to the excitation magnetic head, so that the excitation magnetic head generates a magnetic field to optimize the welding process and can adapt to different welding working conditions.

[0029] When the detected value of the welding current and the duration of the welding current do not meet the preset excitation start condition, the control unit determines that the welding process ends or is abnormal (arc extinguishing), and controls the excitation power supply to be in a closed state to avoid unnecessary energy consumption and potential welding defects.

[0030] Please refer to Figure 2 , Figure 2 which is the second flow schematic diagram of the excitation power supply control method provided by the present invention.

[0031] As a preferred embodiment, the start control program of the excitation power supply adopts a pre-trained neural network model. The pre-trained neural network model includes a primary input layer, a secondary input layer and a multi-layer perceptron; the primary input layer is used to input basic welding process parameters into the secondary input layer; the secondary input layer is used to input the detected value of the welding current and the basic welding process parameters into the multi-layer perceptron; the multi-layer perceptron is used to calculate and output the excitation current and the excitation frequency according to the detected value of the welding current and the basic welding process parameters.

[0032] In this embodiment, the opening control program of the excitation power supply can adopt a pre-trained three-layer neural network model. Among them, the primary input layer receives basic welding process parameters, such as material type, plate thickness, and welding current setting value. According to the Welding Procedure Specification (WPS), the model first establishes the quantitative relationship between the primary input layer and the welding speed and groove type, and together with the real-time welding current detection value detected by the welding current detection unit, they form the secondary input layer and enter the calculation of the Multi-Layer Perceptron (MLP), and the optimal excitation current and excitation frequency are output in real time, and the windings 1+2 and 2+3 of the excitation head are powered periodically to generate the expected pulsed composite magnetic field, which significantly improves the intelligent level and quality control ability of the welding process.

[0033] As a preferred embodiment, the preset excitation opening condition is that the average welding current value is greater than the preset welding current value and the duration of the welding current is greater than the preset time.

[0034] In this embodiment, the welding current detection unit detects the welding current in real time and transmits the welding current detection value to the control unit. When the average welding current value is greater than the preset welding current value and the duration of the welding current is greater than the preset time, the control module automatically turns on the excitation power supply and activates the excitation parameter control program.

[0035] When the average welding current value is greater than the preset welding current value and the duration of the welding current is not greater than the preset time, or when the average welding current value is not greater than the preset welding current value and the duration of the welding current is greater than the preset time, or when the average welding current value is not greater than the preset welding current value and the duration of the welding current is not greater than the preset time, the excitation power supply determines that the welding is ended or the arc is extinguished, and the program circuit stops outputting current to the winding.

[0036] The preset welding current value is, for example, 20A, and the preset time is, for example, 50ms. The present invention does not make special limitations here.

[0037] The welding current detection unit continuously detects the welding current in real time and repeats the above process.

[0038] Please refer to Figure 3 , Figure 3 which is the third flow schematic diagram of the excitation power supply control method provided by the present invention.

[0039] As a preferred embodiment, the magnetic control welding device also includes an excitation current detection unit; the excitation current detection unit is used to detect the excitation current and send the excitation current detection value to the control unit; the method also includes: when the welding current detection value, the duration of the welding current and the excitation current detection value meet the preset normal conditions of the excitation state, the control unit controls the welding power supply and the excitation power supply to work normally; when the welding current detection value, the duration of the welding current and the excitation current detection value do not meet the preset normal conditions of the excitation state, the control unit controls the welding power supply and the excitation power supply to stop working.

[0040] In this embodiment, the magnetic control welding device further includes an excitation current detection unit. The excitation current detection unit detects the excitation current and sends the excitation current detection value to the control unit. The control unit determines whether the welding current detection value, the duration of the welding current, and the excitation current detection value meet the preset excitation state normal condition.

[0041] When the welding current detection value, the duration of the welding current and the excitation current detection value meet the preset normal excitation state conditions, the control unit determines that the welding process is normal, the excitation equipment is normal, and controls the welding power supply and the excitation power supply to work normally.

[0042] When the welding current detection value, the duration of the welding current and the excitation current detection value do not meet the preset normal conditions of the excitation state, the control unit determines that the welding process and / or the excitation equipment are abnormal, and the control unit controls the welding power supply and the excitation power supply to stop working.

[0043] On the basis of the above embodiments, the present invention also ensures that the excitation state is normal by real-time monitoring of the excitation current, thereby avoiding welding defects and equipment damage caused by abnormal excitation current. The welding current, duration and excitation current are comprehensively considered to achieve more accurate control and optimize the welding process. The control unit automatically adjusts the power supply state according to preset conditions, reduces manual intervention, and improves the automation level of the welding process. The power supply is stopped in time under abnormal conditions, reducing unnecessary energy consumption.

[0044] As a preferred embodiment, the preset excitation state normal condition is the preset excitation start condition that the average welding current value is greater than the preset welding current value, the duration of the welding current is greater than the preset time, and the average excitation current value satisfies the preset normal excitation current range.

[0045] In this embodiment, the excitation current detection unit detects the excitation current in real time and sends the excitation current detection value to the control unit. The welding current detection unit detects the welding current in real time and transmits the welding current detection value to the control unit.

[0046] When the average welding current value is greater than the preset welding current value, the duration of the welding current is greater than the preset time, and the average exciting current value satisfies the preset normal exciting current range, the control module determines that the welding process is normal, the exciting device is normal, and the welding continues; When the average welding current value is greater than the preset welding current value, the duration of the welding current is greater than the preset time, and the average exciting current value does not satisfy the preset normal exciting current range, the control module determines that the welding process is normal, the exciting device is abnormal, and controls the welding power supply and the exciting power supply to stop working.

[0047] When the average welding current value is greater than the preset welding current value and the duration of the welding current is not greater than the preset time, or when the average welding current value is not greater than the preset welding current value, the duration of the welding current is greater than the preset time, and the average exciting current value does not satisfy the preset normal exciting current range, the control module determines that the welding has not started, the exciting device is abnormal, and controls the welding power supply and the exciting power supply to stop working.

[0048] Situations that do not meet the preset exciting starting conditions are all within the protection scope of the present invention.

[0049] The preset welding current value is, for example, 20 A, the preset time is, for example, 50 ms, and the preset normal exciting current range can be automatically set according to the detected value of the welding current. The present invention does not make special limitations here.

[0050] As a preferred embodiment, the magnetron welding device further includes a prompting module; the method further includes: when the detected value of the welding current, the duration of the welding current, and the detected value of the exciting current do not meet the preset normal exciting state conditions, the control unit controls the prompting module to generate an abnormal prompting signal; the abnormal prompting signal is a signal for prompting welding abnormality.

[0051] In this embodiment, the magnetron welding device further includes a prompting module. The prompting module generates an abnormal prompting signal when the detected value of the welding current, the duration of the welding current, and the detected value of the exciting current do not meet the preset normal exciting state conditions. For example, it emits an air switch open circuit signal to the production line abnormal control system, thereby prompting to stop welding and notifying the operator to handle the abnormal situation.

[0052] The abnormal prompting signal can be an audible and visual alarm, a text prompt on the display screen, or an alarm message sent to the operator's mobile device. For example: Audible and visual alarm: emits an alarm sound and flashes a red light to prompt the operator that there is an abnormality in the welding process.

[0053] Display screen prompt: Displays a prompt message "Welding abnormality, please check the exciting current" on the display screen of the welding equipment.

[0054] Mobile device alert: Push alert messages to the operator's mobile phone via text message or APP to notify them to immediately check the welding equipment.

[0055] The method of the present invention can prevent abnormal excitation power supply, and at the same time transmit the abnormal signal to the production abnormal control system, stop the welding operation in time, avoid quality defects, and improve the practicability and reliability of the multi-field regulation method and device.

[0056] As a preferred embodiment, both the welding current detection unit and the excitation current detection unit are Hall current sensors.

[0057] In this embodiment, both the welding current detection unit and the excitation current detection unit can be selected as Hall current sensors. A Hall current sensor is a non-contact current detection element based on the Hall effect, which can detect the change of current in real time and accurately, and is suitable for current monitoring during the welding process. By using Hall current sensors, this method can achieve precise control of welding current and excitation current, thereby optimizing the welding process and improving welding quality.

[0058] In addition, shunts, current transformers, Rogowski coils, fiber optic current sensors, magnetoresistive sensors, etc. can also be used as the welding current detection unit and the excitation current detection unit of the present invention, and the present invention is not particularly limited herein.

[0059] During the use of the magnetron welding device, insert the Hall sensor into the secondary wire of the welding machine, and connect the other end to the Hall sensor access end of the excitation power supply, so that the excitation power supply can be automatically powered according to whether welding is in progress or not. When the collected welding current is greater than 20A, the excitation power supply starts and enters the working state. When the collected welding current is not greater than 20A, the excitation power supply is turned off and stops working.

[0060] Please refer to Figure 4 , Figure 4 which is a schematic diagram of the Tesla meter provided by the present invention.

[0061] Please refer to Figure 5 , Figure 5 which is a schematic diagram of the magnetic field strength detection provided by the present invention.

[0062] As a preferred embodiment, it further includes: obtaining the magnetic field strength of the excitation magnetic head; and when the magnetic field strength does not meet the preset strength value, adjusting the magnetic field strength by controlling the excitation current of the excitation power supply so that the magnetic field strength meets the preset strength value.

[0063] In this embodiment, after the excitation head is powered on, a teslameter can be used to detect the magnetic field strength of the excitation head. Turn on the teslameter, click the MT / Gs button, and set the range to 200 mT. Place the detection head of the teslameter close to the end of the excitation head. Press the detection head tightly against the end of each excitation head and wait for 5 seconds. After the data stabilizes, the measured data is the excitation intensity of the excitation head (unit: mT). The measured magnetic field strength is 0.91 mT, where S indicates that this head is the S pole. The measured magnetic field strength is 34.62 mT, where N indicates that this head is the N pole. The adjustment range of the daily working magnetic field strength is 25 - 40 mT. After testing that the magnetic field strength of the central excitation head meets the requirements by using the teslameter, it can be used. In the case where the magnetic field strength does not meet the preset intensity value, the magnetic field strength is regulated by controlling the excitation current of the excitation power supply so that the magnetic field strength meets the preset intensity value.

[0064] Confirm that the state of the welding magnetron generating device is good. The welding parameters are set as welding current (200 - 280) A, voltage (20 - 26) V, welding speed (0.9 - 2.2) m / min, gas flow rate (25 - 30) L / min, excitation frequency (100 - 120) HZ, and magnetic field strength (20 - 40) mT.

[0065] During welding, pay attention to keeping the head angle consistent with the welding direction. If there is deflection, it will affect the welding quality and needs to be adjusted in time.

[0066] The magnetron welding device provided by the present invention will be described below. The magnetron welding device described below can be correspondingly referred to the excitation power supply control method described above.

[0067] The present invention also provides a magnetron welding device, including a welding magnetron generating device, a welding power supply, a welding current detection unit, and a control unit. The welding magnetron generating device includes an excitation power supply and an excitation head; the welding power supply is used to generate a welding current; the welding current detection unit is used to detect the welding current and send the welding current detection value to the control unit; the excitation power supply is used to supply power to the excitation head; the excitation head is used to generate a magnetic field to optimize the welding process; the control unit is used to control the excitation power supply by using the above-mentioned excitation power supply control method.

[0068] As a preferred embodiment, it further includes an excitation current detection unit and a prompt module; the excitation current detection unit is used to detect the excitation current and send the excitation current detection value to the control unit; the prompt module is used to generate an abnormal prompt signal in the case of welding abnormality; the abnormal prompt signal is a signal for prompting welding abnormality.

[0069] Figure 6 Illustrates a schematic structural diagram of an electronic device, such as Figure 6As shown in the figure, the electronic device may include: a processor 601, a communications interface 602, a memory 603, and a communication bus 604. Among them, the processor 601, the communications interface 602, and the memory 603 complete communication with each other through the communication bus 604. The processor 601 may call the logical instructions in the memory 603 to execute an excitation power supply control method, which is applied to a magnetron welding device. The magnetron welding device includes a welding magnetron generating device, a welding power supply, a welding current detection unit, and a control unit. The welding magnetron generating device includes an excitation power supply and an excitation magnetic head; the welding power supply is used to generate a welding current; the welding current detection unit is used to detect the welding current and send the welding current detection value to the control unit; the excitation power supply control method includes: when the welding current detection value and the duration of the welding current meet the preset excitation start condition, the control unit controls the excitation power supply to turn on and output an excitation current and an excitation frequency, and periodically supplies power to the excitation magnetic head to enable the excitation magnetic head to generate a magnetic field to optimize the welding process; when the welding current detection value and the duration of the welding current do not meet the preset excitation start condition, the control unit controls the excitation power supply to be in a closed state.

[0070] In addition, when the logical instructions in the above-mentioned memory 603 are implemented in the form of a software functional unit and sold or used as an independent product, they may be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the related technology, or a part of this technical solution, may be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in various embodiments of the present invention. The foregoing storage medium includes: various media such as a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, or an optical disc that can store program codes.

[0071] An embodiment of the present invention discloses a computer program product. The computer program product includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the excitation power supply control method provided by each of the above method embodiments. The method is applied to a magnetron welding device, which includes a welding magnetron generating device, a welding power supply, a welding current detection unit, and a control unit. The welding magnetron generating device includes an excitation power supply and an excitation magnetic head; the welding power supply is used to generate a welding current; the welding current detection unit is used to detect the welding current and send the welding current detection value to the control unit; the excitation power supply control method includes: when the welding current detection value and the duration of the welding current meet a preset excitation start condition, the control unit controls the excitation power supply to turn on and output an excitation current and an excitation frequency, and periodically supplies power to the excitation magnetic head to enable the excitation magnetic head to generate a magnetic field to optimize the welding process; when the welding current detection value and the duration of the welding current do not meet the preset excitation start condition, the control unit controls the excitation power supply to be in a closed state.

[0072] On the other hand, an embodiment of the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is configured to execute the excitation power supply control method provided by each of the above embodiments. The method is applied to a magnetron welding device, which includes a welding magnetron generating device, a welding power supply, a welding current detection unit, and a control unit. The welding magnetron generating device includes an excitation power supply and an excitation magnetic head; the welding power supply is used to generate a welding current; the welding current detection unit is used to detect the welding current and send the welding current detection value to the control unit; the excitation power supply control method includes: when the welding current detection value and the duration of the welding current meet a preset excitation start condition, the control unit controls the excitation power supply to turn on and output an excitation current and an excitation frequency, and periodically supplies power to the excitation magnetic head to enable the excitation magnetic head to generate a magnetic field to optimize the welding process; when the welding current detection value and the duration of the welding current do not meet the preset excitation start condition, the control unit controls the excitation power supply to be in a closed state.

[0073] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative labor.

[0074] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the essence of the above technical solution or the part that contributes to the related technology can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling an excitation power supply, characterized in that: Applicable to a magnetron welding device, the magnetron welding device comprises a welding magnetron generating device, a welding power source, a welding current detection unit and a control unit, the welding magnetron generating device comprises an excitation power source and an excitation magnetic head; the welding power source is used to generate a welding current; The welding current detection unit is used to detect the welding current and send the welding current detection value to the control unit; The method comprises: When the welding current detection value and the duration of the welding current meet the preset excitation start condition, the control unit controls the excitation power supply to start and output the excitation current and excitation frequency according to the welding current detection value, and periodically supplies power to the excitation head so that the excitation head generates a magnetic field to optimize the welding process; In a case where the welding current detection value and the duration of the welding current do not satisfy the preset excitation on condition, the control unit controls the excitation power supply to be in an off state.

2. The excitation power supply control method according to claim 1, characterized in that: The start-up control program of the excitation power supply adopts a pre-trained neural network model, and the pre-trained neural network model includes a primary input layer, a secondary input layer and a multi-layer perceptron; The primary input layer is used to input basic welding process parameters into the secondary input layer; The secondary input layer is used to input the welding current detection value and the basic welding process parameters into the multi-layer perceptron; The multilayer perceptron is used to calculate and output the excitation current and the excitation frequency according to the welding current detection value and the basic welding process parameters.

3. The excitation power supply control method according to claim 1, characterized in that: The preset excitation start condition is that the average welding current value is greater than the preset welding current value and the duration of the welding current is greater than the preset time.

4. The excitation power supply control method according to claim 1, characterized in that: The magnetron welding device further comprises an excitation current detection unit; the excitation current detection unit is used to detect the excitation current and send the excitation current detection value to the control unit; The method further comprises: When the welding current detection value, the duration of the welding current and the excitation current detection value meet the preset normal conditions of the excitation state, the control unit controls the welding power supply and the excitation power supply to work normally; In a case where the welding current detection value, the duration of the welding current, and the excitation current detection value do not satisfy a preset normal excitation state condition, the control unit controls the welding power source and the excitation power source to stop working.

5. The excitation power supply control method according to claim 4, characterized in that: The preset excitation state normal condition is that the preset excitation start condition is that the average welding current value is greater than the preset welding current value, the duration of the welding current is greater than the preset time, and the average excitation current value meets the preset normal excitation current range.

6. The excitation power supply control method according to claim 4, characterized in that: The magnetron welding device also includes a prompt module; The method further comprises: When the welding current detection value, the duration of the welding current and the excitation current detection value do not satisfy the preset normal conditions of the excitation state, the control unit controls the prompt module to generate an abnormal prompt signal; the abnormal prompt signal is a signal to prompt welding abnormality.

7. The excitation power supply control method according to claim 4, characterized in that: The welding current detection unit and the excitation current detection unit are both Hall current sensors.

8. The excitation power supply control method according to any one of claims 1 to 7, characterized in that: Also includes: Obtaining the magnetic field strength of the excitation magnetic head; When the magnetic field strength does not meet the preset strength value, the magnetic field strength is regulated by controlling the excitation power supply to regulate the excitation current so that the magnetic field strength meets the preset strength value.

9. A magnetron welding device, characterized in that: It includes a welding magnetron generator, a welding power source, a welding current detection unit and a control unit, wherein the welding magnetron generator includes an excitation power source and an excitation magnetic head; The welding power source is used to generate welding current; The welding current detection unit is used to detect the welding current and send the welding current detection value to the control unit; The excitation power supply is used to supply power to the excitation magnetic head; The excitation magnetic head is used to generate a magnetic field to optimize the welding process; The control unit is used to control the excitation power supply by adopting the excitation power supply control method according to any one of claims 1 to 8.

10. The magnetron welding device according to claim 9, characterized in that: It also includes an excitation current detection unit and a prompt module; The excitation current detection unit is used to detect the excitation current and send the excitation current detection value to the control unit; The prompt module is used to generate an abnormal prompt signal in the case of abnormal welding; the abnormal prompt signal is a signal to prompt the welding abnormality.

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