A system, method and intelligent terminal for dynamically measuring tracking accuracy of a magnet power supply

Abstract

The application discloses a kind of dynamic measurement magnet power supply tracking precision system, method and intelligent terminal, the dynamic measurement magnet power supply tracking precision system includes to be measured magnet power supply module, and with the measurement machine case module of coupling connection of the to be measured magnet power supply module.The application is higher by higher measurement precision, higher sampling rate, excellent synchronous performance, system internal can be on-line synchronous generation reference waveform, support multichannel acquisition, support programming processing, it is convenient to analyze and show data, so that dynamic tracking measurement becomes more accurate, can satisfy the tracking measurement demand of various occasions.

Description

Technical Field

[0001] This invention relates to the field of magnet power supply measurement technology, and specifically to a system, method, and intelligent terminal for dynamically measuring the tracking accuracy of magnet power supplies. Background Technology

[0002] An accelerator magnet power supply is a special type of current source that provides excitation to a magnet to generate a specific magnetic field to control and constrain the deflection of a particle beam. To reduce particle beam deviation and jitter, the magnet power supply output needs to have extremely low ripple and precisely controlled current. Especially for magnet power supplies with dynamic current waveforms, tracking accuracy is a key performance indicator. The accuracy requirement for accelerator magnet power supplies is generally on the order of one ten-thousandth. How to effectively and accurately measure this accuracy is also an important research direction for accelerator magnet power supplies.

[0003] The development and application of high-precision magnet power supply measurement both domestically and internationally are mostly concentrated in applications such as DC and low-speed acquisition, with relatively little research on dynamic power supply acquisition. The literature "Development of a High-Precision Synchronous Data Acquisition System" introduces a magnet power supply data acquisition system developed by the Shanghai Institute of Applied Physics. This method uses a controller + AD board for signal acquisition, synchronization, and closed-loop calculation, and can internally calculate tracking errors. However, the system's bandwidth can only reach a maximum of 100kHz, which is insufficient for rapidly changing dynamic power supplies. Chinese patent CN211321606U discloses a parallel data acquisition method using multi-threading technology on multiple serial ports, but the serial port itself has limited speed, making it difficult to guarantee real-time acquisition at high sampling rates. The literature "Pulse Power Supply Data Acquisition Design Based on FPGA and AD7985" introduces a power supply data acquisition system developed by the China Academy of Engineering Physics for high-precision pulse electroplating power supplies. This system uses an FPGA and AD acquisition chip, possessing high-speed communication capabilities, but its accuracy is only 16 bits, which cannot meet the requirements for higher precision, and synchronous acquisition is not achieved. Existing research mainly relies on the power digital control system itself for data acquisition, and then uses communication methods to analyze and observe the data. In this approach, the control system and the measurement system are the same device with the same accuracy, which can easily introduce "common cause problems" that lead to inaccurate measurement data. Standard instruments can also be used for data acquisition, but when using standard instruments, there are problems such as the inability to measure given waveforms and insufficient synchronization accuracy.

[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a system, method and intelligent terminal for dynamically measuring the tracking accuracy of a magnet power supply, in order to address the above-mentioned deficiencies of the prior art. The invention aims to solve the problems of inaccurate measurement data, inability to measure given waveforms and insufficient synchronization accuracy in the prior art.

[0006] The technical solution adopted by this invention to solve the technical problem is as follows:

[0007] In a first aspect, the present invention provides a system for dynamically measuring the tracking accuracy of a magnet power supply. The system includes: a magnet power supply module under test, and a measuring chassis module coupled to the magnet power supply module under test; the magnet power supply module under test is used to output a current signal under test; and the measuring chassis module is used to dynamically track and measure the current signal under test.

[0008] In one implementation, the magnet power supply module under test includes one or more magnet power supplies and load magnets, as well as a digital controller and a current sensor corresponding to each magnet power supply.

[0009] In one implementation, the digital controller includes a digital control board, a high-precision DCCT calibration system, and an AD / DA board. The digital controller is used to control the power supply of the magnet under test to output the current signal according to instructions in a closed-loop manner. The digital control board is used to receive reference waveform data sent by a host computer and send the reference waveform data to the AD / DA board, as well as to acquire trigger signals and clock signals to complete signal synchronization. The high-precision DCCT calibration system is used to provide feedback on the current waveform. The AD / DA board is used to acquire the current waveform and generate a high-precision PWM waveform to drive the magnet power supply to fulfill the excitation requirements of the load magnet.

[0010] In one implementation, the measurement chassis module includes an NI chassis, a controller board, a data acquisition board, and a high-precision timing board; wherein, the controller board is used to run a software measurement program, the data acquisition board is used to acquire the current signal to be measured provided by the power supply of the magnet under test according to a preset sampling rate, and the timing board is used to acquire a trigger signal and a clock signal to complete signal synchronization.

[0011] In one implementation, the software measurement program is used to control the acquisition board to acquire and trigger and synchronize with the clock signal, select the corresponding channel, preset the sampling rate, download the reference waveform data and send the reference waveform data to the NI chassis, and display and save the real-time waveform data and tracking accuracy.

[0012] In one implementation, the NI chassis is used to perform calculations and analysis on the reference waveform data and the current signal under test to obtain the real-time waveform data and the tracking accuracy; wherein, the tracking accuracy is defined as:

[0013]

[0014] Among them, E r Represents tracking accuracy, i ri is the reference current in the reference waveform data. f The signal to be measured is the current signal.

[0015] Secondly, embodiments of the present invention also provide a method for dynamically measuring the tracking accuracy of a magnet power supply, wherein the method includes:

[0016] Acquire preset reference waveform data, trigger signal and clock signal, as well as acquisition parameters; wherein, the acquisition parameters include the number of power supplies for the magnet under test, the output current magnitude, the connected channel number, the sampling rate and the number of samples;

[0017] Clock phase-locking is performed based on the trigger signal and clock signal, and synchronous acquisition is performed based on the acquisition parameters to obtain the current signal to be measured;

[0018] Based on the measured current signal, real-time waveform data is obtained;

[0019] The tracking accuracy is obtained based on the real-time waveform data and the preset reference waveform data.

[0020] In one implementation, the step of performing clock phase-locking based on the trigger signal and the clock signal, and synchronously acquiring the current signal to be measured based on the acquisition parameters, includes:

[0021] After the magnet power supply enters a thermally stable state, clock calibration is performed on the AD / DA board and the acquisition board on the magnet power supply according to the clock signal.

[0022] After the clock calibration is completed, the current signal to be measured output by the magnet power supply is synchronously acquired according to the trigger signal.

[0023] In one implementation, obtaining real-time waveform data based on the current signal to be measured includes:

[0024] The system automatically synchronizes with the preset reference waveform data according to the program settings to obtain real-time waveform data and displays the real-time waveform data; wherein the program settings are preset according to the acquisition parameters.

[0025] Thirdly, embodiments of the present invention also provide a smart terminal, wherein the smart terminal includes a memory, a processor, and a program for dynamically measuring the tracking accuracy of a magnet power supply stored in the memory and executable on the processor, wherein when the processor executes the program for dynamically measuring the tracking accuracy of a magnet power supply, it implements the steps of the method for dynamically measuring the tracking accuracy of a magnet power supply as described in any of the above claims.

[0026] Beneficial Effects: Compared with existing technologies, this invention provides a system, method, and intelligent terminal for dynamically measuring the tracking accuracy of a magnet power supply. Compared to existing technologies, this invention can dynamically track and measure the current signal under test through a measurement chassis module, offering higher measurement accuracy, a higher sampling rate, excellent synchronization performance, online synchronous generation of reference waveforms within the system, support for multi-channel acquisition, and support for programming processing, facilitating data analysis and display. This makes dynamic tracking measurement more accurate and can meet the tracking measurement needs of various applications. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a system structure block diagram of the dynamic measurement of magnet power supply tracking accuracy provided in an embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram of the execution of a software measurement program provided in an embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram of a method for dynamically measuring the tracking accuracy of a magnet power supply according to an embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of the smart terminal provided in the embodiment of the present invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0033] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0034] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0035] An accelerator magnet power supply is a special type of current source that provides excitation to a magnet to generate a specific magnetic field to control and constrain the deflection of a particle beam. To reduce particle beam deviation and jitter, the magnet power supply output needs to have extremely low ripple and precisely controlled current. Especially for magnet power supplies with dynamic current waveforms, tracking accuracy is a key indicator. Generally, the accuracy requirement for accelerator magnet power supplies is on the order of one ten-thousandth. How to measure effectively and accurately is also an important research direction for accelerator magnet power supplies. Existing research mainly relies on the power supply's digital control system itself for data acquisition, and then uses communication methods to analyze and observe the data. In this approach, the control system and the measurement system are the same device with the same accuracy, which easily introduces "common cause problems" leading to inaccurate measurement data. Standard instruments can also be used for data acquisition, but this presents problems such as the inability to measure a given waveform and insufficient synchronization accuracy.

[0036] Therefore, in order to solve the above problems, this embodiment provides a system for dynamically measuring the tracking accuracy of a magnet power supply. The system of this embodiment can achieve higher measurement accuracy, higher sampling rate, excellent synchronization performance, online synchronous generation of reference waveforms within the system, support for multi-channel acquisition, and support for programming processing, which facilitates data analysis and display. This makes dynamic tracking measurement more accurate and can meet the tracking measurement needs of various occasions.

[0037] Exemplary System

[0038] This embodiment provides a system for dynamically measuring the tracking accuracy of a magnet power supply. For example... Figure 1 As shown, the system consists of a power supply module for the magnet under test and a measuring chassis module coupled to the power supply module for the magnet under test; the power supply module for the magnet under test is used to output the current signal to be measured; the measuring chassis module is used to dynamically track and measure the current signal to be measured.

[0039] In one specific embodiment, the magnet power supply module under test includes one or more magnet power supplies and load magnets, as well as a digital controller and current sensor corresponding to each magnet power supply.

[0040] Specifically, such as Figure 1 As shown, the magnet power supply under test can be one or more magnet power supplies, each carrying a magnet power supply load, and each magnet power supply includes a digital controller and a current sensor to provide the current signal to be measured and transmit the current signal to the corresponding digital controller.

[0041] In one specific embodiment, the digital controller includes a digital control board, a high-precision DCCT calibration system, and an AD / DA board. The digital controller is used to control the power supply of the magnet under test to output the current signal according to instructions in a closed-loop manner. The digital control board is used to receive reference waveform data sent by a host computer and send the reference waveform data to the AD / DA board, as well as to acquire trigger signals and clock signals to complete signal synchronization. The high-precision DCCT calibration system is used to provide feedback on the current waveform. The AD / DA board is used to acquire the current waveform and generate a high-precision PWM waveform to drive the magnet power supply to fulfill the excitation requirements of the load magnet.

[0042] Specifically, the digital controller for the magnet power supply mainly completes the closed-loop control of the magnet power supply based on the instructions of the host computer. In dynamic mode, the host computer sends reference waveform data to the digital controller and receives synchronous trigger and clock signals. The AD / DA board collects the feedback current waveform measured by the high-precision DCCT, completes the closed-loop control in the control board, and generates a high-precision PWM waveform to drive the magnet power supply to meet the excitation requirements of the load magnet.

[0043] In one specific embodiment, the measurement chassis module includes an NI chassis, a controller board, a data acquisition board, and a high-precision timing board; wherein, the controller board is used to run the software measurement program, the data acquisition board is used to acquire the current signal to be measured provided by the power supply of the magnet under test according to a preset sampling rate, and the timing board is used to acquire trigger signals and clock signals to complete signal synchronization.

[0044] LabVIEW is a programming environment developed by National Instruments (NI) using the graphical programming language G. Programs generated are in the form of block diagrams. LabVIEW software is the core of the NI design platform and an ideal choice for developing measurement or control systems.

[0045] Specifically, the measurement system consists of an NI chassis and its acquisition board. Using LabVIEW programming and trigger and clock signals originating from the same source as the power controller, reference waveform data can be synchronously generated within the acquisition system. Simultaneously, the acquisition board acquires the output current. After acquisition, the program processes the reference and acquired signals to calculate the tracking accuracy and save the relevant data. The software measurement program processing flow is as follows: Figure 3 As shown.

[0046] Specifically, this embodiment uses NI's PXI-1082 chassis and PXIe-4481 acquisition board. Each board has six independent acquisition channels, each with a 24-bit resolution and a sampling rate of up to 1.25 MHz. After connecting the signal cables, trigger cables, and clock cables, the reference waveform data file is first input into the software measurement program. Then, the software program configures the board channels, sampling rate, and number of samples. Next, phase-locking is performed on the clock signal input to the chassis, with a phase-locking accuracy better than 25 ppm (parts per million). After phase-locking, it is set as the corresponding board's acquisition clock source. Then, the trigger signal is connected to the main board, and the trigger signal is routed to other slave boards via the backplane bus (synchronization performance better than 250 ps), allowing each board to synchronously start data acquisition tasks.

[0047] In one specific implementation, the software measurement program is used to control the acquisition board to acquire and trigger and synchronize with the clock signal, select the corresponding channel, preset the sampling rate, download the reference waveform data and send the reference waveform data to the NI chassis, and display and save the real-time waveform data and tracking accuracy.

[0048] Specifically, the NI chassis synchronously processes the acquired data with the reference waveform file input into the software measurement program. Then, both are processed and analyzed together to obtain the final real-time waveform data and tracking accuracy. This data can be saved as text or Excel files on a local computer as needed, achieving accurate acquisition of dynamic magnet power supply tracking accuracy. The NI chassis in this embodiment features higher measurement accuracy, a higher sampling rate, excellent synchronization performance, online synchronous generation of reference waveforms within the system, support for multi-channel acquisition, and support for programmable processing, facilitating data analysis and display. This makes dynamic tracking measurements more precise and can meet the tracking measurement needs of various applications.

[0049] In one specific embodiment, the NI chassis is used to perform calculations and analyses on the reference waveform data and the current signal under test to obtain the real-time waveform data and the tracking accuracy; wherein, the tracking accuracy is defined as:

[0050]

[0051] Among them, E r Represents tracking accuracy, i r i is the reference current in the reference waveform data. f The signal to be measured is the current signal.

[0052] Specifically, because particle accelerators require precisely controlled magnetic fields, the output current must accurately track the reference current curve, placing demands on the tracking accuracy of the power supply. By defining and tracking the accuracy in real time, dynamic tracking and measurement of the magnet power supply can be achieved.

[0053] Exemplary methods

[0054] like Figure 3 As shown in the figure, the method for dynamically measuring the tracking accuracy of the magnet power supply in this embodiment includes the following steps:

[0055] Step S100: Acquire preset reference waveform data, trigger signal and clock signal, and acquisition parameters; wherein, the acquisition parameters include the number of power supplies for the magnet under test, the output current magnitude, the connected channel number, the sampling rate and the number of samples;

[0056] Specifically, the magnet power supply under test and the test system are positioned, and the cables for trigger signal, clock signal, and power output current signal are connected to the power supply or test chassis respectively. The preset reference waveform data is downloaded to the magnet power supply and the NI chassis respectively. In the measurement program, the acquisition channels of the measurement system are set according to the number of power supplies under test, the magnitude of the output current, and the number of the connected channels. The sampling rate, the number of samples, and other measurement parameters are input in the software test program.

[0057] Step S200: Perform clock phase-locking according to the trigger signal and clock signal, and perform synchronous acquisition according to the acquisition parameters to obtain the current signal to be measured;

[0058] In one implementation, step S200 specifically includes the following steps:

[0059] Step S201: After the magnet power supply enters the thermally stable state, clock calibration is performed on the AD / DA board and the acquisition board on the magnet power supply according to the clock signal.

[0060] Step S202: After the clock calibration is completed, the current signal to be measured output by the magnet power supply is synchronously acquired according to the trigger signal.

[0061] Specifically, clock phase-locked loops are used to synchronize the signal phases of the AD / DA board on the magnet power supply and the acquisition board. Synchronous transmission of trigger signals allows each board to synchronously initiate data acquisition tasks, enabling synchronized processing of the acquired data with the reference waveform file input into the program.

[0062] Step S300: Obtain real-time waveform data based on the current signal to be measured;

[0063] In one implementation, step S300 specifically includes the following steps:

[0064] Step S301: Automatically synchronize with the preset reference waveform data according to the program settings to obtain real-time waveform data and display the real-time waveform data; wherein, the program settings are preset according to the acquisition parameters.

[0065] Specifically, the acquired data is processed synchronously with the reference waveform file input into the program. Then, both are processed and analyzed together to obtain the final real-time waveform data and tracking accuracy. This data can be saved as text or Excel files on the local computer as needed. This achieves the goal of accurately acquiring tracking data for dynamic magnet power supplies.

[0066] Step S400: Obtain the tracking accuracy based on the real-time waveform data and the preset reference waveform data.

[0067] Specifically, this embodiment can display the obtained real-time waveform data and tracking accuracy. The method for dynamically measuring the tracking accuracy of the magnet power supply in this embodiment also includes setting save and stop buttons on the software measurement program. When the save button is selected in the software measurement program interface, the real-time waveform data and tracking accuracy are saved; when the stop button is selected in the software measurement program interface, the software measurement program stops running, and the measurement is completed.

[0068] Based on the above embodiments, the present invention also provides a smart terminal, the principle block diagram of which can be as follows: Figure 4As shown, the smart terminal includes a processor, memory, network interface, display screen, and temperature sensor connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The network interface is used to communicate with external terminals via a network connection. When executed by the processor, the computer program implements a method for dynamically measuring the tracking accuracy of a magnet power supply. The display screen can be an LCD screen or an e-ink screen. The temperature sensor is pre-installed within the smart terminal to detect the operating temperature of internal devices.

[0069] Those skilled in the art will understand that Figure 4 The block diagram shown is merely a partial structural diagram related to the present invention and does not constitute a limitation on the smart terminal to which the present invention is applied. A specific smart terminal may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0070] In one embodiment, a smart terminal is provided, comprising a memory, a processor, and a program for dynamically measuring the tracking accuracy of a magnet power supply stored in the memory and executable on the processor. When the processor executes the program for dynamically measuring the tracking accuracy of a magnet power supply, it implements the following operation instructions:

[0071] Acquire preset reference waveform data, trigger signal and clock signal, as well as acquisition parameters; wherein, the acquisition parameters include the number of power supplies for the magnet under test, the output current magnitude, the connected channel number, the sampling rate and the number of samples;

[0072] Clock phase-locking is performed based on the trigger signal and clock signal, and synchronous acquisition is performed based on the acquisition parameters to obtain the current signal to be measured;

[0073] Based on the measured current signal, real-time waveform data is obtained;

[0074] The tracking accuracy is obtained based on the real-time waveform data and the preset reference waveform data.

[0075] 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. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, operational databases, or other media used in the embodiments provided by this invention can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual operating data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0076] In summary, this invention discloses a system, method, and intelligent terminal for dynamically measuring the tracking accuracy of a magnet power supply. The system includes a magnet power supply module under test and a measurement chassis module coupled to the magnet power supply module under test. This invention achieves higher measurement accuracy, a higher sampling rate, excellent synchronization performance, online synchronous generation of reference waveforms within the system, support for multi-channel acquisition, and support for programmable processing, facilitating data analysis and display. This makes dynamic tracking measurement more accurate and can meet the tracking measurement needs of various applications.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A system for dynamically measuring the tracking accuracy of a magnet power supply, characterized in that, The system includes: a power supply module for the magnet under test, and a measuring chassis module coupled to the power supply module for the magnet under test; the power supply module for the magnet under test is used to output a current signal to be measured; the measuring chassis module is used to dynamically track and measure the current signal to be measured. The magnet power module under test includes one or more magnet power supplies and load magnets, as well as a digital controller and current sensor corresponding to each magnet power supply; The digital controller includes a digital control board, a high-precision DCCT calibration system, and an AD / DA board. The digital controller is used to control the power supply of the magnet under test to output the current signal according to instructions in a closed loop. The digital control board is used to receive reference waveform data sent by the host computer and send the reference waveform data to the AD / DA board, as well as to acquire trigger signals and clock signals to complete signal synchronization. The high-precision DCCT calibration system is used to provide feedback on the current waveform. The AD / DA board is used to acquire the current waveform and generate a high-precision PWM waveform to drive the magnet power supply to fulfill the excitation requirements of the load magnet. The measurement chassis module includes an NI chassis, a controller board, a data acquisition board, and a high-precision timing board. The controller board runs the software measurement program, the data acquisition board acquires the current signal provided by the power supply of the magnet under test according to a preset sampling rate, and the high-precision timing board acquires trigger signals and clock signals to achieve signal synchronization. The NI chassis, the data acquisition board, and the magnet power supply all share the same trigger and clock signals as the digital controller. The high-precision timing board transmits the trigger signals to the data acquisition board via the backplane bus routing of the NI chassis. The NI chassis generates reference waveform data synchronously within the acquisition system based on the same trigger signal and clock signal. The acquisition board completes the acquisition of the output current. After acquisition, the NI chassis processes the reference signal and the acquired signal, calculates the tracking accuracy, and saves the relevant data. The NI chassis is used to perform calculations and analysis on the reference waveform data and the current signal under test to obtain real-time waveform data and the tracking accuracy; wherein, the tracking accuracy is defined as: ， in, Represents tracking accuracy. The reference current is used as a reference in the waveform data. The signal to be measured is the current signal.

2. The system for dynamically measuring the tracking accuracy of a magnet power supply according to claim 1, characterized in that, The software measurement program is used to control the acquisition board to acquire and trigger and synchronize with the clock signal, select the corresponding channel, preset the sampling rate, download the reference waveform data and send the reference waveform data to the NI chassis, and display and save the real-time waveform data and tracking accuracy.

3. A method for dynamically measuring the tracking accuracy of a magnet power supply, characterized in that, The method of using the system for dynamically measuring the tracking accuracy of a magnet power supply as described in any one of claims 1 and 2 includes: Acquire preset reference waveform data, trigger signal and clock signal, as well as acquisition parameters; wherein, the acquisition parameters include the number of magnet power supplies under test, output current magnitude, connected channel number, sampling rate and number of samples; Clock phase-locking is performed based on the trigger signal and clock signal, and synchronous acquisition is performed based on the acquisition parameters to obtain the current signal to be measured; Based on the measured current signal, real-time waveform data is obtained; The tracking accuracy is obtained based on the real-time waveform data and the preset reference waveform data; The step of clock-locking based on the trigger signal and clock signal, and synchronously acquiring the current signal to be measured based on the acquisition parameters, includes: After the magnet power supply enters a thermally stable state, clock calibration is performed on the AD / DA board and the acquisition board on the magnet power supply according to the clock signal. After the clock calibration is completed, the current signal to be measured output by the magnet power supply is synchronously acquired according to the trigger signal.

4. The method for dynamically measuring the tracking accuracy of a magnet power supply according to claim 3, characterized in that, The step of obtaining real-time waveform data based on the current signal to be measured includes: The system automatically synchronizes with the preset reference waveform data according to the program settings to obtain real-time waveform data and displays the real-time waveform data; wherein, the program settings are preset according to the acquisition parameters.

5. A smart terminal, characterized in that, The smart terminal includes a memory, a processor, and a program for dynamically measuring the tracking accuracy of the magnet power supply, which is stored in the memory and can run on the processor. When the processor executes the program for dynamically measuring the tracking accuracy of the magnet power supply, it implements the steps of the method for dynamically measuring the tracking accuracy of the magnet power supply as described in any one of claims 3 and 4.

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