High-temperature superconducting flux pump control system, method, equipment, medium and product

Abstract

The invention discloses a high-temperature superconducting flux pump control system, method and equipment, a medium and a product, and relates to the field of flux pump control, and the system comprises a refrigerator, a high-temperature superconducting magnet and a stator part and a rotor part of a high-temperature superconducting flux pump which are arranged in a vacuum Dewar; the stator part is a high-temperature superconducting strip; the high-temperature superconducting magnet is connected to the high-temperature superconducting strip; the rotor part is a rotating disc embedded with permanent magnets; the refrigerator keeps a low-temperature environment lower than a set temperature threshold value in the vacuum Dewar; the servo motor and the rotating disc are coaxially arranged, and the servo motor is connected with the servo driver; the servo driver is also connected with the controller; the Hall sensor is connected with the gauss meter to measure the central magnetic field of the high-temperature superconducting magnet; and the gauss meter is connected with the controller, displays the real-time magnetic field data value of the central magnetic field, and proportionally converts the real-time magnetic field data value into an analog voltage as a feedback control quantity of the controller, so that the magnetic field stability of the high magnetic field generated by the high-temperature superconducting magnet is remarkably improved.

Description

Technical Field

[0001] The present 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 Art

[0002] High-temperature superconducting magnets are an important technology in the field of modern science and technology, playing a key role in many fields. High-temperature superconducting magnets can generate very strong and stable magnetic fields, far exceeding the level that traditional permanent magnets and copper wire magnets can achieve. This high magnetic field can be used in scientific research, medical fields, magnetic resonance imaging (MRI) and other applications, improving imaging quality, resolution and detection sensitivity. Compared with traditional magnets, superconducting magnets can produce the same magnetic field strength at a smaller volume and weight. This gives superconducting magnets a significant advantage in space-constrained or weight-sensitive applications. In general, high-temperature superconducting magnets have shown broad application prospects in scientific research, medical care, industry and other fields with their high strength, low energy consumption, good stability, small size and light weight, and low maintenance cost.

[0003] During the operation of a high-temperature superconducting magnet, the current in the closed superconducting loop gradually decays due to factors such as joint resistance and flux creep, making it difficult to maintain stable operation in the continuous current mode. As a new type of wireless power source, the flux pump is a wireless power supply technology that injects DC current into a superconducting closed loop. It can effectively compensate for the current decay inside the high-temperature superconducting magnet and accurately control the working current of the high-temperature superconducting magnet.

[0004] The flux pump commonly used at present is a linear flux pump based on the traveling wave magnetic field. The device includes multiple copper coils with electricity, which are used to generate a traveling wave magnetic field to act on the superconducting tape, thereby generating a DC voltage to power the high-temperature superconducting magnet and excite a strong magnetic field. The copper coil is connected to an external current source. By controlling the size and direction of the external current source, the current flowing into the copper coil is changed, and the amplitude and frequency of the traveling wave magnetic field generated by the copper coil are changed, which ultimately affects the size of the DC voltage generated by the superconducting tape, and the magnetic field generated by the high-temperature superconducting magnet can be controlled.

[0005] If the magnetic field generated by the high-temperature superconducting magnet is to be maintained at a certain value, it is necessary to control the current output by the external current source in real time. The energized copper coil will generate a large amount of energy loss during operation, making 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 remain 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 the present application is to provide a high-temperature superconducting flux pump control system, method, device, medium and product to solve the problem of poor magnetic field stability when a high-temperature superconducting magnet generates a high magnetic field.

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

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

[0009] Vacuum dewar, servo motor, servo drive, Hall sensor, Gauss meter and controller;

[0010] The vacuum dewar is provided with a refrigerator, a high-temperature superconducting magnet, a stator part and a rotor part of a high-temperature superconducting magnetic flux pump; the stator part is a high-temperature superconducting tape; the high-temperature superconducting magnet is connected to the high-temperature superconducting tape; the rotor part is a rotating disk inlaid 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 rotating disk and connected to the servo driver; the servo driver is also connected to the controller;

[0012] The Hall sensor is connected to the Gauss meter and is disposed at the center of the high-temperature superconducting magnet 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 proportionally convert the real-time magnetic field data value into an analog voltage; the analog voltage is the feedback control quantity of the controller.

[0014] In a second aspect, the present application provides a high temperature superconducting flux pump control method, comprising:

[0015] Based on the initial rotation speed, the servo driver is controlled to drive the servo motor to rotate, a DC voltage is generated at both ends of the high-temperature superconducting tape, the high-temperature superconducting magnet is excited, and the real-time magnetic field data value of the central magnetic field is obtained; 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; the rotating disk is inlaid with permanent magnets; the rotor part of the high-temperature superconducting flux pump is a rotating disk inlaid with permanent magnets;

[0016] Convert the real-time magnetic field data value into analog voltage in proportion;

[0017] Determine a target voltage value collected by an ADC converter, and determine a target voltage threshold based on the target voltage value; the target voltage threshold includes a high voltage threshold and a low voltage threshold;

[0018] According to 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 a set range and the analog voltage collected by the ADC converter is kept stable.

[0019] In a third aspect, the present 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-mentioned high-temperature superconducting flux pump control method.

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

[0021] In a fifth aspect, the present application provides a computer program product, including a computer program, which implements the above-mentioned high-temperature superconducting flux pump control method when executed by a processor.

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

[0023] The present application collects the real-time magnetic field data value of the central magnetic field of the high-temperature superconducting magnet, converts it into an analog voltage in proportion, and feeds it back to the controller in real time to change the rotation speed of the servo motor, so that the real-time magnetic field data value is maintained within a set range, thereby keeping the analog voltage fed back to the controller stable, completing the precise control of the working current of the high-temperature superconducting magnet and the precise compensation of the current attenuation, and significantly improving the magnetic field stability of the high magnetic field generated by the high-temperature superconducting magnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a high-temperature superconducting flux pump control system provided in one embodiment of the present application;

[0026] Figure 2 A control program flow chart provided for an embodiment of the present application;

[0027] Figure 3 This is a flow chart of a high-temperature superconducting flux pump control method provided in one embodiment of the present application. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0030] like Figure 1 As shown, the present 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 is provided with a refrigerator, a high-temperature superconducting magnet, a stator part and a rotor part of a high-temperature superconducting flux pump 1; the stator part is a high-temperature superconducting tape; the high-temperature superconducting magnet is connected to the high-temperature superconducting tape; the rotor part is a rotating disk inlaid with permanent magnets; the refrigerator is used to maintain a low-temperature environment below a set temperature threshold in the vacuum dewar; 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 arranged at the center position of the high-temperature superconducting magnet, and is used to measure the central magnetic field of the high-temperature superconducting magnet; the Gaussmeter 5 is also connected to the controller 6, 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 in proportion; the analog voltage is the feedback control amount of the controller 6.

[0031] In practical applications, the temperature threshold is set as the critical temperature, which is 77K. When the temperature is lower than 77K, all high-temperature superconducting materials can be in a superconducting state. In actual experiments, the temperature in the vacuum dewar can reach as low as 45K. The lower the temperature, the better.

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

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

[0034] In an exemplary embodiment, a photoelectric encoder is provided at the tail of the servo motor 2 , and the photoelectric encoder is used to measure the rotation speed of the servo motor 2 .

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

[0036] In an exemplary embodiment, the Hall sensor 4 is a low-temperature axial Hall sensor.

[0037] Furthermore, the cylindrical rotating disk inlaid 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 magnets are placed in a vacuum dewar and cooled by conduction of the refrigerator to deliver cold energy, so that the entire flux pump system is placed in a low-temperature environment to achieve a superconducting state. The remaining devices are placed in a normal temperature environment outside the dewar.

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

[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 flux pump system is in a low-temperature environment and the superconducting material is in a superconducting state.

[0040] The GM refrigerator transfers cold energy in the vacuum environment of the vacuum dewar, and the refrigeration is stable, which can ensure that the overall working temperature of the magnetic flux pump system is stable at a low temperature and that the superconducting material is in a superconducting state. Compared with liquid nitrogen refrigeration, the operating cost is lower and the effect is more stable.

[0041] Furthermore, the rotating disk is coaxially installed with the servo motor 2 and is driven to rotate by the servo motor 2 . The servo motor 2 is connected to the servo driver 3 and the rotation speed is controlled by the servo driver 3 .

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

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

[0044] The servo motor 2 uses the 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 mode options make equipment integration and management more convenient and efficient. Servo driver 3, as the controller of servo motor 2, issues instructions to make servo motor 2 run. The whole works in the speed mode with analog voltage input, and receives the analog voltage output by DAC converter 7 and converts it into the corresponding speed to control the operation of servo motor 2.

[0045] The servo driver 3, as the controller of the servo motor 2, is used to control the motion state of the servo motor 2. The servo motor 2 works in a speed mode with analog voltage input. The servo driver 3 converts the received ±10V analog voltage into a speed of ±3000rpm in proportion, and then the speed of the servo motor 2 can be controlled by inputting the analog voltage to the servo driver 3.

[0046] Furthermore, the Hall sensor 4 is a low-temperature axial Hall sensor, which 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] The Hall sensor 4 adopts a low-temperature axial Hall sensor produced by Lake Shore Corporation of the United States. The operating temperature range is 1.5K to 375K. It can work in an extremely low temperature environment. Compared with general Hall sensors, it has higher sensitivity and can accurately measure the magnetic field of a high-temperature superconducting magnet.

[0048] Furthermore, the Gaussmeter 5 is connected to the PC 9 on one hand, and collects and saves the real-time magnetic field data value through the Labview acquisition program; on the other hand, the Gaussmeter 5 can output an analog voltage value proportional to the magnetic field value, and this analog voltage value is the feedback amount in the feedback control.

[0049] In practical applications, the Gaussmeter 5 can be a 425 model Gaussmeter produced by Lake Shore Company in the United States, which can be used in conjunction with the above-mentioned low-temperature axial Hall sensor. On the one hand, it can display the real-time magnetic field data measured by the Hall sensor 4, and connect to the host computer to collect and save the magnetic field data value through the Labview program; on the other hand, the Gaussmeter 5 itself can output an analog voltage value proportional to the displayed magnetic field data value, and the corresponding relationship is: ± maximum range is converted to ± 3.5V analog voltage. The range of the Gaussmeter 5 can be selected according to demand, and the commonly used range is ± 350.0kG.

[0050] The gauss meter 5 is used in conjunction with the Hall sensor 4, and can automatically identify the model of the Hall sensor 4, accurately display the measured magnetic field on the front panel, and can be connected to the host computer to save the magnetic field data value. Compared with the traditional data acquisition card connected to the sensor to collect data, it has the advantages of convenience, speed and accuracy. The gauss meter 5 can also output an analog voltage value proportional to the displayed magnetic field data value, which is input into the controller 6 as a feedback amount.

[0051] Furthermore, the industrial control board with STM32F407 as the main control chip is 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 an analog voltage, so that the servo motor 2 rotates at a speed value corresponding to the analog voltage value. The high-temperature superconducting flux pump 1 is used to excite the high-temperature superconducting magnet, and the central magnetic field begins to increase. The high-temperature superconducting flux pump 1 is a rotary high-temperature superconducting flux pump.

[0052] In practical applications, STM32F407 is a 32-bit ARM Cortex-M4 microcontroller series product launched by STMicroelectronics Group. It is based on the ARM Cortex-M4 core and has a floating point unit (FPU), which can efficiently perform digital signal processing and algorithm operations. STM32F407 integrates a wealth of peripherals, including multiple general-purpose timers, PWM controllers, DAC converters, and ADC converters, etc., which are suitable for connecting external devices and communicating with external systems. Built-in low-power mode and power optimization features can play an advantage in applications that require long-term operation and energy saving. The control program is written and burned into the controller 6 through Keil 5 software to complete the control of the signal acquisition and output signals of the DAC converter 7 and ADC converter 8, and realize the precise control of the magnetic field at the center of the high-temperature superconducting magnet by the flux pump system.

[0053] Compared with the mainstream STM32F1 and STM32F3 series, the STM32F407 has higher signal processing speed and efficiency, and is suitable for connecting 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 the high-temperature superconducting magnet and achieve a higher 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 feedback control the analog voltage value output by the DAC converter 7, thereby controlling the rotation speed of the servo motor 2 in real time, thereby controlling the size of the central magnetic field of the high-temperature superconducting magnet.

[0055] In practical applications, the ADC converter 8, the chip model is ADS1256, which is a precision analog-to-digital conversion (ADC) chip, providing a resolution of up to 24 bits, and can collect a voltage of 0.298μV at the minimum, which can achieve very accurate analog signal conversion, and has the characteristics of high precision, low noise and low power consumption. The analog voltage signal output by the Gaussmeter 5 can be accurately collected, and converted into a digital voltage signal and input into the STM32F407 microcontroller. This analog voltage signal is the feedback amount in the feedback control.

[0056] 24-bit high-precision analog-to-digital converter, chip model ADS1256, can collect a minimum voltage of 0.298μV. It adopts a low-power design and is suitable for occasions that require long-term operation. High precision and high resolution enable the 24-bit ADC to maintain a very low noise level during measurement and sampling, while providing a high signal-to-noise ratio, which helps to ensure the accuracy and stability of the measurement results.

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

[0058] Compared with the mainstream 12-bit DAC, the 24-bit high-precision digital-to-analog converter can provide very high resolution, process more data details, and generate very accurate analog output signals. In addition, the output voltage is usually very stable and has low drift characteristics. Even in the case of temperature changes or long-term operation, the stability of the output signal can be guaranteed. The output analog voltage signal is used to control the speed of the servo motor 2, and then control the central magnetic field of the high-temperature superconducting magnet, which is convenient and fast.

[0059] The voltage signal output by the Gaussmeter 5 is collected by the ADC and fed back in real time to control the DAC output voltage and thus the speed of the servo motor 2 in real time, so that the magnetic field value at the center of the high-temperature superconducting magnet is maintained near the preset value, completing the precise control of the magnetic field. According to actual needs, the preset value of the magnetic field and the motor speed value are programmed in 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] The present application embodiment provides a high temperature superconducting flux pump control method, which is executed by a computer device, and can be executed by a computer device such as a terminal or a server alone, or by a terminal and a server together. In the present application embodiment, Figure 3 As shown, the method includes the following steps.

[0061] S1: Based on the initial rotation speed, the servo driver is controlled to drive the servo motor to rotate, a DC voltage is generated at both ends of the high-temperature superconducting tape, the high-temperature superconducting magnet is excited, and the real-time magnetic field data value of the central magnetic field is obtained; 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; the rotating disk is inlaid with permanent magnets; the rotor part of the high-temperature superconducting flux pump is a rotating disk inlaid with permanent magnets.

[0062] S2: Convert the real-time magnetic field data value into analog voltage in proportion.

[0063] S3: Determine a target voltage value collected by an ADC converter, and determine a 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: According to 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 a set range and the analog voltage collected by the ADC converter is kept stable.

[0065] The present application adopts a rotary high-temperature superconducting flux pump to excite the high-temperature superconducting magnet. The rotor part is composed of a rotating disk inlaid with permanent magnets and a servo motor 2. The servo motor 2 drives the rotating disk to rotate, generates a traveling wave magnetic field in space to act on the high-temperature superconducting tape, and generates a DC voltage at both ends of the high-temperature superconducting tape. The high-temperature superconducting magnet is connected to the high-temperature superconducting tape, and then excites the high-temperature superconducting magnet. The central magnetic field value generated by the high-temperature superconducting magnet is collected by the Hall sensor 4 and connected to the Gauss meter 5 for display. The Gauss meter 5 is connected to the computer to store the magnetic field data. The servo motor 2 is used to adjust the speed of the rotating disk, and then control the size of the central magnetic field. In order to maintain the stability of the magnetic field, so that the central magnetic field value generated by the high-temperature superconducting magnet is maintained near a certain set value, a feedback control algorithm is introduced, and an industrial control board with STM32F407 as the main control chip is used as a controller 6. The industrial control board is equipped with a DAC converter 7 and an ADC converter 8, which are used to output a DC voltage to the servo driver 3 to adjust the speed and collect an analog voltage value 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 according to the real-time feedback of the magnetic field value at the center of the high-temperature superconducting magnet, and the magnetic field value can be maintained near the set value according to the set program, greatly improving 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, a memory, an input / output interface (I / O for short) and a communication interface. The processor, the memory and the input / output interface are connected via a system bus, and the communication interface is connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store high-temperature superconducting flux pump control data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, a high-temperature superconducting flux pump control method is implemented.

[0067] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the above method is implemented when the processor executes the computer program.

[0068] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program, which implements the above method when executed by a processor.

[0069] In an exemplary embodiment, a computer program product is provided, including a computer program, which implements the above method when executed by a processor.

[0070] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ReadOnlyMemory, ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (Magnetoresistive RandomAccess Memory, MRAM), ferroelectric random access memory (Ferroelectric RandomAccess Memory, FRAM), phase change memory (Phase Change Memory, PCM), graphene memory, etc. Volatile memory can include random access memory (RandomAccess Memory, RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0071] In this application, all actions to obtain signals, information or data are carried out in compliance with the relevant data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0072] The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., but is not limited thereto. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but is not limited thereto.

[0073] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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 article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A high temperature superconducting flux pump control system, characterized in that: include: Vacuum dewar, servo motor, servo drive, Hall sensor, Gauss meter and controller; The vacuum dewar is provided with a refrigerator, a high-temperature superconducting magnet, a stator part and a rotor part of a high-temperature superconducting magnetic flux pump; the stator part is a high-temperature superconducting tape; the high-temperature superconducting magnet is connected to the high-temperature superconducting tape; the rotor part is a rotating disk inlaid 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 is coaxially arranged with the rotating disk and connected to the servo driver; the servo driver is also connected to the controller; The Hall sensor is connected to the Gauss meter and is disposed at the center of the high-temperature superconducting magnet to measure the central magnetic field of the high-temperature superconducting magnet; 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 proportionally convert the real-time magnetic field data value into an analog voltage; the analog voltage is the feedback control quantity of the controller.

2. The high temperature superconducting flux pump control system according to claim 1, characterized in that: Also includes: A DAC converter and an ADC converter integrated in 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 is a three-phase AC motor.

4. The high temperature superconducting flux pump control system according to claim 3, characterized in that: A photoelectric encoder is provided at the tail of the servo motor, and the photoelectric encoder is used to measure the rotation speed of the servo motor.

5. 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 rotation speed of the servo motor.

6. 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.

7. A high temperature superconducting flux pump control method, 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 to 6, and the high-temperature superconducting flux pump control method comprises: Based on the initial rotation speed, the servo driver is controlled to drive the servo motor to rotate, a DC voltage is generated at both ends of the high-temperature superconducting tape, the high-temperature superconducting magnet is excited, and the real-time magnetic field data value of the central magnetic field is obtained; 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; the rotating disk is inlaid with permanent magnets; the rotor part of the high-temperature superconducting flux pump is a rotating disk inlaid with permanent magnets; Convert the real-time magnetic field data value into analog voltage in proportion; Determine a target voltage value collected by an ADC converter, and determine a target voltage threshold based on the target voltage value; the target voltage threshold includes a high voltage threshold and a low voltage threshold; According to 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 a set range and the analog voltage collected by the ADC converter is kept stable.

8. A computer device comprising: 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 high-temperature superconducting flux pump control method according to claim 7.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the high-temperature superconducting flux pump control method according to claim 7 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the high-temperature superconducting flux pump control method according to claim 7 is implemented.

Images