A high-temperature superconducting flux pump control system, method, equipment, medium, and product.

Abstract

This application discloses a high-temperature superconducting flux pump control system, method, equipment, medium, and product, relating to the field of flux pump control. The system includes a refrigerator, a high-temperature superconducting magnet, a stator, and a rotor of a high-temperature superconducting flux pump housed within a vacuum Dewar. The stator is a high-temperature superconducting tape; the high-temperature superconducting magnet is connected to the high-temperature superconducting tape; the rotor is a rotating disk embedded with permanent magnets; the refrigerator maintains a low-temperature environment below a set temperature threshold within the vacuum Dewar; a servo motor is coaxially arranged with the rotating disk and connected to a servo driver; the servo driver is also connected to a controller; a Hall sensor is connected to a gaussmeter to measure the central magnetic field of the high-temperature superconducting magnet; the gaussmeter is connected to the controller to display the real-time magnetic field data value of the central magnetic field, and this real-time magnetic field data value is proportionally converted into an analog voltage as a feedback control quantity for the controller. This application significantly improves the magnetic field stability of the high magnetic field generated by the high-temperature superconducting magnet.

Description

Technical Field

[0001] This application relates to the field of flux pump control, and in particular to a high-temperature superconducting flux pump control system, method, equipment, medium, and product. Background Technology

[0002] High-temperature superconducting magnets are a crucial technology in modern science and technology, playing a key role in multiple fields. They can generate extremely strong and stable magnetic fields, far exceeding the levels achievable by traditional permanent magnets and copper wire magnets. This high magnetic field can be used in scientific research, medical applications, and magnetic resonance imaging (MRI), improving image quality, resolution, and detection sensitivity. Compared to conventional magnets, superconducting magnets can generate the same magnetic field strength in a smaller volume and with less weight. This gives them a significant advantage in space-constrained or weight-sensitive applications. In summary, high-temperature superconducting magnets, with their advantages of high strength, low energy consumption, good stability, small size, light weight, and low maintenance costs, have shown broad application prospects in scientific research, medicine, and industry.

[0003] During the operation of high-temperature superconducting magnets, factors such as joint resistance and flux creep cause the current in the closed superconducting circuit to gradually decay, making it difficult to maintain stable operation in continuous current mode. A flux pump, as a novel wireless power source, is a wireless power supply technology that injects direct current into a superconducting closed-loop circuit. It can effectively compensate for the current decay inside the high-temperature superconducting magnet and provide precise control over the operating current of the magnet.

[0004] Currently, the most commonly used flux pumps are linear flux pumps based on traveling wave magnetic fields. Their devices consist of multiple energized copper coils that generate a traveling wave magnetic field that acts on the superconducting tape, thereby producing a DC voltage to power the high-temperature superconducting magnet and excite a strong magnetic field. An external current source is connected to the copper coils. By controlling the magnitude and direction of this external current source, the current flowing through the copper coils is altered, thus changing the amplitude and frequency of the traveling wave magnetic field generated by the copper coils. Ultimately, this affects the magnitude of the DC voltage generated by the superconducting tape, allowing control over the magnetic field produced by the high-temperature superconducting magnet.

[0005] If the magnetic field generated by the high-temperature superconducting magnet is to be maintained at a certain value, the magnitude of the current output by the external current source needs to be controlled in real time. When the energized copper coil is working, a large amount of power loss will be generated, which makes it impossible for the traveling wave magnetic field generated by the flux pump excitation system to meet the stability requirements during the current adjustment process. The magnetic field generated by the high-temperature superconducting magnet cannot be kept stable at all times, and the uniformity and stability of the central magnetic field cannot be maintained at a high level. Summary of the Invention

[0006] The purpose of this application is to provide a high-temperature superconducting flux pump control system, method, equipment, medium, and product to solve the problem of poor magnetic field stability when high-temperature superconducting magnets generate high magnetic fields.

[0007] To achieve the above objectives, this application provides the following solution:

[0008] In a first aspect, this application provides a high-temperature superconducting flux pump control system, comprising:

[0009] Vacuum Dewar, servo motor, servo driver, Hall sensor, gaussmeter, and controller;

[0010] The vacuum Dewar includes a refrigerator, a high-temperature superconducting magnet, a stator section of a high-temperature superconducting flux pump, and a rotor section; the stator section is a high-temperature superconducting tape; the high-temperature superconducting magnet is connected to the high-temperature superconducting tape; the rotor section is a rotating disk embedded with permanent magnets; the refrigerator is used to maintain a low-temperature environment in the vacuum Dewar below a set temperature threshold.

[0011] The servo motor is coaxially arranged with the rotary disk and connected to the servo driver; the servo driver is also connected to the controller.

[0012] The Hall sensor, connected to the gaussmeter, is located at the center of the high-temperature superconducting magnet and is used to measure the central magnetic field of the high-temperature superconducting magnet.

[0013] The gaussmeter is also connected to the controller and is used to display the real-time magnetic field data value of the central magnetic field and convert the real-time magnetic field data value into an analog voltage proportionally; the analog voltage is the feedback control quantity of the controller.

[0014] Secondly, this application provides a high-temperature superconducting flux pump control method, including:

[0015] Based on the initial rotational speed, the servo driver is controlled to drive the servo motor to rotate, generating a DC voltage at both ends of the high-temperature superconducting tape to excite the high-temperature superconducting magnet and obtain the real-time magnetic field data value of the central magnetic field; the servo motor is coaxially arranged with the rotating disk; the high-temperature superconducting tape is the stator part of the high-temperature superconducting flux pump; permanent magnets are embedded on the rotating disk; the rotor part of the high-temperature superconducting flux pump is a rotating disk embedded with permanent magnets;

[0016] The real-time magnetic field data value is proportionally converted into an analog voltage.

[0017] The target voltage value acquired by the ADC converter is determined, and a target voltage threshold is determined based on the target voltage value; the target voltage threshold includes a high voltage threshold and a low voltage threshold.

[0018] Based on the analog voltage and the target voltage threshold, the analog voltage signal output by the DAC converter is adjusted so that the real-time magnetic field data value is maintained within the set range and the analog voltage acquired by the ADC converter remains stable.

[0019] Thirdly, this application provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described high-temperature superconducting flux pump control method.

[0020] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described high-temperature superconducting flux pump control method.

[0021] Fifthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the above-described high-temperature superconducting flux pump control method.

[0022] According to the specific embodiments provided in this application, the following technical effects are disclosed:

[0023] This application collects real-time magnetic field data of the central magnetic field of a high-temperature superconducting magnet and converts it into an analog voltage proportionally. This voltage is then fed back to the controller in real time to change the speed of the servo motor. This keeps the real-time magnetic field data within a set range, thereby stabilizing the analog voltage fed back to the controller. This enables precise control of the operating current of the high-temperature superconducting magnet and precise compensation for current attenuation, significantly improving the magnetic field stability of the high magnetic field generated by the high-temperature superconducting magnet. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the high-temperature superconducting flux pump control system provided in an embodiment of this application;

[0026] Figure 2 This is a flowchart of a control procedure provided in an embodiment of this application;

[0027] Figure 3 This is a flowchart of a high-temperature superconducting flux pump control method provided in an embodiment of this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 As shown, this application provides a high-temperature superconducting flux pump control system, including: a vacuum dewar, a servo motor 2, a servo driver 3, a Hall sensor 4, a gaussmeter 5, and a controller 6; the vacuum dewar contains a refrigerator, a high-temperature superconducting magnet, a stator portion and a rotor portion of the high-temperature superconducting flux pump 1; the stator portion is a high-temperature superconducting tape; the high-temperature superconducting magnet is connected to the high-temperature superconducting tape; the rotor portion is a rotating disk embedded with permanent magnets; the refrigerator is used to maintain a low-temperature environment in the vacuum dewar below a set temperature threshold; the servo motor 2 is coaxially arranged with the rotating disk and connected to the servo driver 3; the servo driver 3 is also connected to the controller 6; the Hall sensor 4 is connected to the gaussmeter 5 and is located at the center of the high-temperature superconducting magnet, used to measure the central magnetic field of the high-temperature superconducting magnet; the gaussmeter 5 is also connected to the controller 6, used to display the real-time magnetic field data value of the central magnetic field and convert the real-time magnetic field data value proportionally into an analog voltage; the analog voltage is the feedback control quantity of the controller 6.

[0031] In practical applications, a temperature threshold is set as the critical temperature, which is 77 K. When the temperature is below 77 K, all high-temperature superconducting materials can be in a superconducting state. In actual experiments, the lowest temperature that can be reached in a vacuum Dewar is about 45 K, and the lower the temperature, the better.

[0032] In an exemplary embodiment, the system further includes: a DAC converter 7 and an ADC converter 8 integrated within the controller 6; the DAC converter 7 is connected to the servo driver 3; and the ADC converter 8 is connected to the gaussmeter 5.

[0033] In one exemplary embodiment, the servo motor 2 is a three-phase AC motor.

[0034] In one exemplary embodiment, the servo motor 2 is provided with a photoelectric encoder at its tail end, the photoelectric encoder being used to measure the rotational speed of the servo motor 2.

[0035] In one exemplary embodiment, the servo driver 3 inputs an analog voltage to control the rotational speed of the servo motor 2.

[0036] In one exemplary embodiment, the Hall sensor 4 is a cryogenic axial Hall sensor.

[0037] Furthermore, the cylindrical rotating disk embedded with permanent magnets is the rotor part of the flux pump, and the high-temperature superconducting tape is the stator part of the flux pump. The stator, rotor, and high-temperature superconducting magnet are placed in a vacuum Dewar and cooled by conduction from a refrigerator, which delivers cold energy so that the entire flux pump system is placed in a low-temperature environment and reaches the superconducting state. The remaining devices are placed in a normal temperature environment outside the Dewar.

[0038] In practical applications, the vacuum level of a vacuum Dewar is better than 10. -4 Pa×m 3 / s. The purpose of setting up a Dewar is to prevent magnetic and heat leakage and to maintain a low-temperature environment inside the Dewar.

[0039] The refrigerator is a GM refrigerator. The first-stage cold head of the refrigerator transfers cold energy to the high-temperature superconducting magnet and the high-temperature superconducting tape, so that the magnetic flux pump system is in a low-temperature environment and the superconducting material is in a superconducting state.

[0040] The GM cryostat transfers cooling energy in a vacuum Dewar environment, ensuring stable cooling and maintaining the overall operating temperature of the flux pump system at a consistently low temperature, thus preserving the superconducting material in its superconducting state. Compared to liquid nitrogen refrigeration, it has lower operating costs and more stable performance.

[0041] Furthermore, the rotating disk is coaxially mounted with the servo motor 2, which drives it to rotate. The servo motor 2 is connected to the servo driver 3, which controls the rotation speed.

[0042] In practical applications, servo motor 2 is a three-phase AC motor with a photoelectric encoder installed at its tail to measure the motor speed. Servo motor 2 receives commands from servo driver 3 and rotates at the corresponding speed according to the commands.

[0043] Servo motor 2 operates in speed mode with analog voltage input. Servo driver 3 receives a voltage of ±10V and controls servo motor 2 to operate at a speed of ±3000rpm.

[0044] Servo motor 2 adopts Delta B2 series servo motor 2, which has fast response speed and excellent dynamic characteristics, and can quickly adapt to different motion requirements, including high-speed motion and rapidly changing loads. It supports intelligent control and integration, and various control modes make equipment integration and management more convenient and efficient. Servo driver 3 acts as the controller of servo motor 2, issuing commands to make servo motor 2 run. The whole system operates in speed mode with analog voltage input, and by receiving the analog voltage output from DAC converter 7, it converts it into the corresponding speed to control the operation of servo motor 2.

[0045] Servo driver 3, acting as the controller of servo motor 2, is used to control the motion state of servo motor 2. Servo motor 2 operates in a speed mode with analog voltage input. Servo driver 3 proportionally converts the received ±10V analog voltage into a speed of ±3000rpm, thereby controlling the operating speed of servo motor 2 by inputting analog voltage to servo driver 3.

[0046] Furthermore, Hall sensor 4 is a low-temperature axial Hall sensor. The low-temperature Hall sensor is placed at the center of the high-temperature superconducting magnet and can work in a low-temperature environment. It is used to accurately measure the central magnetic field value of the high-temperature superconducting magnet and is connected to the gaussmeter 5 to display the real-time magnetic field value.

[0047] Hall sensor 4 uses a low-temperature axial Hall sensor manufactured by Lake Shore, USA. Its operating temperature range is 1.5K to 375K. It can work in extremely low temperature environments and has higher sensitivity than ordinary Hall sensors. It can accurately measure the magnetic field of high-temperature superconducting magnets.

[0048] Furthermore, the gaussmeter 5 is connected to the PC 9 to acquire and save real-time magnetic field data values ​​through the LabVIEW acquisition program; on the other hand, the gaussmeter 5 can output an analog voltage value that is proportional to the magnetic field value, which is the feedback quantity in the feedback control.

[0049] In practical applications, the gaussmeter 5 can be a 425 model gaussmeter manufactured by Lake Shore, USA, which can be used in conjunction with the aforementioned low-temperature axial Hall sensor. On one hand, it can display the real-time magnetic field data measured by Hall sensor 4, and connect to a host computer to acquire and save the magnetic field data values ​​via LabVIEW. On the other hand, the gaussmeter 5 itself can output an analog voltage value proportional to the displayed magnetic field data value, with the correspondence being: ±3.5V analog voltage converted from the maximum range. The range of the gaussmeter 5 can be selected according to requirements, with a commonly used range of ±350.0kG.

[0050] The gaussmeter 5, used in conjunction with the Hall sensor 4, can automatically identify the Hall sensor 4 model, accurately display the measured magnetic field on the front panel, and connect to a host computer to save the magnetic field data values. Compared to the traditional method of acquiring data by connecting the sensor via a data acquisition card, this method offers advantages such as convenience, speed, and accuracy. The gaussmeter 5 can also output an analog voltage value proportional to the displayed magnetic field data value, which can be used as feedback input to the controller 6.

[0051] Furthermore, an industrial control board using the STM32F407 as the main control chip serves as the core controller, with a built-in 24-bit DAC converter 7 and a 24-bit ADC converter 8. The DAC converter 7 is connected to the servo driver 3 to output analog voltage, causing the servo motor 2 to rotate at the speed corresponding to the analog voltage value. A high-temperature superconducting flux pump 1 is used to excite the high-temperature superconducting magnet, and the central magnetic field begins to increase. This high-temperature superconducting flux pump 1 is a rotary high-temperature superconducting flux pump.

[0052] In practical applications, the STM32F407 is a 32-bit ARM Cortex-M4 microcontroller series from STMicroelectronics. Based on the ARM Cortex-M4 core, it features a floating-point unit (FPU) capable of efficiently performing digital signal processing and algorithm calculations. The STM32F407 integrates a rich set of peripherals, including multiple general-purpose timers, a PWM controller, a DAC converter, and an ADC converter, making it suitable for connecting to external devices and communicating with external systems. Its built-in low-power mode and power optimization features provide advantages in applications requiring long-term operation and energy efficiency. By writing the control program using Keil 5 software and burning it into the controller (6), the system can control the signal acquisition and output signals of the DAC converter (7) and ADC converter (8), achieving precise control of the magnetic flux pump system over the central magnetic field of the high-temperature superconducting magnet.

[0053] Compared to the mainstream STM32F1 and STM32F3 series, the STM32F407 has higher signal processing speed and efficiency, making it suitable for connecting to external devices and communicating with external systems. As the core of the control program, it can quickly and accurately control the central magnetic field of a high-temperature superconducting magnet, achieving a high level of stability.

[0054] Furthermore, the ADC converter 8 is connected to the gaussmeter 5 to collect an analog voltage value proportional to the central magnetic field. This analog voltage value is used as a feedback quantity to control the analog voltage value output by the DAC converter 7, thereby controlling the rotation speed of the servo motor 2 in real time, and thus controlling the magnitude of the central magnetic field of the high-temperature superconducting magnet.

[0055] In practical applications, the ADC converter 8, model ADS1256, is a precision analog-to-digital converter (ADC) chip offering up to 24-bit resolution and a minimum voltage acquisition capability of 0.298μV. It enables highly accurate analog signal conversion and features high precision, low noise, and low power consumption. It can accurately acquire the analog voltage signal output from the gaussmeter 5 and convert it into a digital voltage signal, which is then input to the STM32F407 microcontroller. This analog voltage signal serves as the feedback quantity in the feedback control.

[0056] This 24-bit high-precision analog-to-digital converter (ADC), model ADS1256, can acquire voltages as low as 0.298μV. It features a low-power design, making it suitable for applications requiring long-term operation. Its high precision and high resolution allow the 24-bit ADC to maintain very low noise levels during measurement and sampling, while providing a high signal-to-noise ratio, contributing to the accuracy and stability of measurement results.

[0057] In practical applications, the DAC converter 7 is a 24-bit high-precision digital-to-analog converter with high resolution. It can convert digital voltage signals into very accurate analog voltage signals for output. The output analog voltage is connected to the servo driver 3 to control the actual working state of the servo motor 2.

[0058] Compared to mainstream 12-bit DACs, 24-bit high-precision digital-to-analog converters offer significantly higher resolution, handling more data details and producing highly accurate analog output signals. Furthermore, the output voltage is typically very stable with low drift characteristics, ensuring signal stability even under temperature variations or prolonged operation. The output analog voltage signal is used to control the rotational speed of servo motor 2, thereby controlling the central magnetic field of the high-temperature superconducting magnet, offering convenience and speed.

[0059] The voltage signal from Gaussmeter 5 is acquired by the ADC and fed back in real time. This feedback controls the output voltage of the DAC, which in turn controls the speed of servo motor 2 in real time. This maintains the central magnetic field value of the high-temperature superconducting magnet near a preset value, achieving precise control of the magnetic field. According to actual requirements, the preset magnetic field value and motor speed value are programmed into the control program using Keil 5 software. The control program flow is as follows: Figure 2 As shown, precise control of the magnetic field can be achieved.

[0060] This application provides a high-temperature superconducting flux pump control method. This method is executed by a computer device, specifically a terminal or server, or both. In this application embodiment, for example... Figure 3 As shown, the method includes the following steps.

[0061] S1: Based on the initial rotational speed, the servo driver is controlled to drive the servo motor to rotate, generating a DC voltage at both ends of the high-temperature superconducting tape to excite the high-temperature superconducting magnet and obtain the real-time magnetic field data value of the central magnetic field; the servo motor and the rotating disk are coaxially arranged; the high-temperature superconducting tape is the stator part of the high-temperature superconducting flux pump; permanent magnets are embedded on the rotating disk; the rotor part of the high-temperature superconducting flux pump is a rotating disk embedded with permanent magnets.

[0062] S2: Convert the real-time magnetic field data value proportionally to an analog voltage.

[0063] S3: Determine the target voltage value acquired by the ADC converter, and determine the target voltage threshold based on the target voltage value; the target voltage threshold includes a high voltage threshold and a low voltage threshold.

[0064] S4: Adjust the analog voltage signal output by the DAC converter according to the analog voltage and the target voltage threshold so that the real-time magnetic field data value is maintained within the set range and the analog voltage collected by the ADC converter remains stable.

[0065] This application employs a rotary high-temperature superconducting flux pump to excite a high-temperature superconducting magnet. The rotor consists of a rotating disk embedded with permanent magnets and a servo motor 2. The servo motor 2 drives the rotating disk to rotate, generating a traveling wave magnetic field in space that acts on the high-temperature superconducting tape, producing a DC voltage across the tape. The high-temperature superconducting magnet is connected to the tape, thus exciting it. The central magnetic field value generated by the high-temperature superconducting magnet is acquired by a Hall sensor 4 and connected to a gaussmeter 5 for display. The gaussmeter 5 is connected to a computer to store the magnetic field data. The servo motor 2 is used to adjust the rotation speed of the rotating disk, thereby controlling the magnitude of the central magnetic field. To maintain magnetic field stability and keep the central magnetic field value generated by the high-temperature superconducting magnet near a certain set value, a feedback control algorithm is introduced. An industrial control board with an STM32F407 as the main control chip is used as the controller 6. The industrial control board has a DAC converter 7 and an ADC converter 8, used to output DC voltage to the servo driver 3 to adjust the rotation speed and acquire analog voltage values ​​proportional to the magnetic field value. By using Keil 5 software to write a feedback control program, the speed of servo motor 2 can be changed in real time according to the magnetic field value at the center of the high-temperature superconducting magnet. The magnetic field value is maintained near the set value according to the set program, which greatly improves the stability of the magnetic field.

[0066] In an exemplary embodiment, a computer device is provided, which may be a server or a terminal. The computer device includes a processor, memory, input / output interfaces (I / O), and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is connected to the system bus via the I / O interfaces. The processor of the computer device provides computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The database of the computer device stores control data for a high-temperature superconducting flux pump. The I / O interfaces of the computer device are used for exchanging information between the processor and external devices. The communication interface of the computer device is used for communication with an external terminal via a network connection. When the computer program is executed by the processor, it implements a high-temperature superconducting flux pump control method.

[0067] In one exemplary embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the method described above.

[0068] In one exemplary embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the methods described above.

[0069] In one exemplary embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the methods described above.

[0070] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).

[0071] In this application, all actions to acquire signals, information, or data are carried out in compliance with the relevant data protection laws and policies of the country where the location is situated, and with the authorization granted by the owner of the relevant device.

[0072] The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0073] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A high-temperature superconducting flux pump control system, characterized in that, include: Vacuum Dewar, servo motor, servo driver, Hall sensor, gaussmeter, and controller; The vacuum Dewar includes a refrigerator, a high-temperature superconducting magnet, a stator section of a high-temperature superconducting flux pump, and a rotor section. The stator section is a high-temperature superconducting tape. The high-temperature superconducting magnet is connected to the high-temperature superconducting tape. The rotor section is a rotating disk embedded with permanent magnets. The refrigerator is used to maintain a low-temperature environment in the vacuum Dewar below a set temperature threshold. The set temperature threshold is a critical temperature of 77K. When the temperature is below 77K, all high-temperature superconducting materials are in a superconducting state. The vacuum level of the vacuum Dewar is better than 10. -4 Pa×m 3 / s; The refrigeration unit is a GM refrigeration unit; The servo motor is coaxially arranged with the rotary disk and connected to the servo driver; the servo driver is also connected to the controller; the servo motor is a three-phase AC motor; the tail of the servo motor is equipped with a photoelectric encoder, which is used to measure the rotational speed of the servo motor; the servo driver receives a voltage of ±10V and controls the servo motor to operate at a speed of ±3000rpm accordingly. The Hall sensor, connected to the gaussmeter, is located at the center of the high-temperature superconducting magnet and is used to measure the central magnetic field of the high-temperature superconducting magnet; the Hall sensor is a low-temperature axial Hall sensor with an operating temperature range of 1.5K~375K. The gaussmeter is also connected to the controller to display the real-time magnetic field data value of the central magnetic field and convert the real-time magnetic field data value into an analog voltage proportionally; the analog voltage is the feedback control quantity of the controller; the ± maximum range of the gaussmeter is converted into ±3.5V analog voltage; the commonly used range is ±350.0kG. The industrial control board with STM32F407 as the main control chip is the core controller. It has a built-in 24-bit DAC converter and 24-bit ADC converter. The DAC converter is connected to the servo driver to output analog voltage, so that the servo motor rotates according to the speed value corresponding to the analog voltage value. A 24-bit ADC converter is connected to a gaussmeter (5) to acquire analog voltage values ​​proportional to the central magnetic field; The voltage signal from the gaussmeter is acquired by the ADC and fed back in real time. This feedback controls the output voltage of the DAC, which in turn controls the speed of the servo motor in real time. This maintains the central magnetic field value of the high-temperature superconducting magnet near a preset value, achieving precise control of the magnetic field. According to actual requirements, the preset magnetic field value and the motor speed value are programmed into the control program using Keil 5 software. The control program flow includes: Initialize each module, set the initial DAC output, and set the ADC to acquire the target voltage value V. preset and high and low voltage thresholds V presetmax V presetmin ; Excitation begins, and the ADC acquires and measures the voltage value V corresponding to the magnetic field in real time. If V∈[V presetmin V presetmax The collected voltage remained stable. If V [V presetmin V presetmax Determine whether V is greater than V. presetmax If yes, reduce the DAC output; otherwise, when V is less than V0. presetmin Increase DAC output.

2. The high-temperature superconducting flux pump control system according to claim 1, characterized in that, Also includes: The DAC converter and ADC converter are integrated inside the controller; The DAC converter is connected to the servo driver; The ADC converter is connected to the gaussmeter.

3. The high-temperature superconducting flux pump control system according to claim 1, characterized in that, The servo motor driver inputs an analog voltage to control the rotational speed of the servo motor.

4. The high-temperature superconducting flux pump control system according to claim 1, characterized in that, The Hall sensor is a low-temperature axial Hall sensor.

5. A control method for a high-temperature superconducting flux pump, characterized in that, The high-temperature superconducting flux pump control method is applied to the high-temperature superconducting flux pump control device according to any one of claims 1-4, and the high-temperature superconducting flux pump control method includes: Based on the initial rotational speed, the servo driver is controlled to drive the servo motor to rotate, generating a DC voltage at both ends of the high-temperature superconducting tape to excite the high-temperature superconducting magnet and obtain the real-time magnetic field data value of the central magnetic field; the servo motor is coaxially arranged with the rotating disk; the high-temperature superconducting tape is the stator part of the high-temperature superconducting flux pump; permanent magnets are embedded on the rotating disk; the rotor part of the high-temperature superconducting flux pump is a rotating disk embedded with permanent magnets; The real-time magnetic field data value is proportionally converted into an analog voltage. The target voltage value acquired by the ADC converter is determined, and a target voltage threshold is determined based on the target voltage value; the target voltage threshold includes a high voltage threshold and a low voltage threshold. Based on the analog voltage and the target voltage threshold, the analog voltage signal output by the DAC converter is adjusted so that the real-time magnetic field data value is maintained within the set range and the analog voltage acquired by the ADC converter remains stable. The voltage signal from the gaussmeter is acquired by the ADC and fed back in real time. This feedback controls the output voltage of the DAC, which in turn controls the speed of the servo motor in real time. This maintains the central magnetic field value of the high-temperature superconducting magnet near a preset value, achieving precise control of the magnetic field. According to actual requirements, the preset magnetic field value and the motor speed value are programmed into the control program using Keil 5 software. The control program flow includes: Initialize each module, set the initial DAC output, and set the ADC to acquire the target voltage value V. preset and high and low voltage thresholds V presetmax V presetmin ; Excitation begins, and the ADC acquires and measures the voltage value V corresponding to the magnetic field in real time. If V∈[V presetmin V presetmax The collected voltage remained stable. If V [V presetmin V presetmax Determine whether V is greater than V. presetmax If yes, reduce the DAC output; otherwise, when V is less than V0. presetmin Increase DAC output.

6. A computer device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement the high-temperature superconducting flux pump control method of claim 5.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the high-temperature superconducting flux pump control method of claim 5.

8. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the high-temperature superconducting flux pump control method of claim 5.

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