Spacecraft component magnetic induction measurement and inversion method and device

Abstract

The embodiment of the invention provides a spacecraft component magnetic induction measurement and inversion method and device, and the method comprises the steps: determining a standard magnetic field, and determining the magnetic field measurement data of a to-be-measured product based on the standard magnetic field, a non-magnetic vehicle, a non-magnetic support, and a magnetometer; determining an environmental background magnetic field, and determining induced magnetic field measurement data based on the magnetic field measurement data and the environmental background magnetic field; determining a magnetic field calculation value, and determining error information based on the magnetic field calculation value and the induced magnetic field measurement data; and performing inversion based on the error information and the error threshold, and determining an inversion result. Compared with an existing single-measuring-point magnetic dipole equivalent model, the three-dimensional space magnetic field equivalent model has the advantages that the precision is higher, the space magnetic field characteristics of the measured component can be reflected more accurately, and the magnetic induction influence of the component on the spacecraft space magnetic field detection load can be evaluated accurately.

Description

Technical Field

[0001] The embodiments of this specification relate to the field of spacecraft technology, and in particular to magnetic induction measurement and inversion methods for spacecraft components. Background Art

[0002] In order to reduce the impact of the magnetism of the spacecraft itself on the space magnetic field detection, the space magnetic field detection spacecraft has strict control requirements on the residual magnetism and inductive magnetic interference of its internal components. All components need to be measured for inductive magnetic field and their impact on the spacecraft space magnetic field detection payload is evaluated. The existing component inductive magnetic measurement method uses the magnetic dipole method: a magnetic field measurement magnetometer is placed at a certain distance from the measured component, and a certain standard magnetic field (such as 50000nT) is applied to the measured component through a standard coil according to the orbital environment of the spacecraft, and the magnetic field B1 at the specific position of the measured component is measured; then the measured component is removed, and the background magnetic field of the test environment is measured, and the inductive magnetic field B at the specific position of the measured component is calculated by the following formula: Then the magnetic induction moment of the measured component is obtained according to the following formula: .

[0003] In the above formula, r is the distance between the magnetometer and the measured component. Due to the complex internal structure of the component and the complex external magnetic field, this method of using single-point magnetic field data to represent the overall magnetic properties of the component and calculating its equivalent magnetic properties cannot accurately reflect the actual magnetic properties of the component, and is not very accurate when evaluating the magnetic properties of a single machine and the impact on the spacecraft's magnetic field detection payload.

[0004] Therefore, a better solution is urgently needed. Summary of the invention In view of this, the embodiments of this specification provide a method for measuring and inverting magnetic induction of spacecraft components. One or more embodiments of this specification also relate to a device for measuring and inverting magnetic induction of spacecraft components, a computing device, a computer-readable storage medium, and a computer program to solve the technical defects existing in the prior art.

[0005] According to a first aspect of an embodiment of this specification, a method for magnetic sensing measurement and inversion of spacecraft components is provided, which is applied to a three-dimensional magnetic field measurement device, wherein the three-dimensional magnetic field measurement device comprises a non-magnetic guide rail, a non-magnetic vehicle, a non-magnetic bracket and a magnetometer, and the method comprises: Determine the standard magnetic field, and determine the magnetic field measurement data of the product to be tested based on the standard magnetic field, the non-magnetic vehicle, the non-magnetic bracket and the magnetometer; Determine the environmental background magnetic field, and determine the induced magnetic field measurement data based on the magnetic field measurement data and the environmental background magnetic field; Determine a magnetic field calculation value, and determine error information based on the magnetic field calculation value and the sensed magnetic field measurement data; Based on the error information and the error threshold, an inversion is performed to determine an inversion result.

[0006] In a possible implementation, the non-magnetic vehicle includes a first non-magnetic vehicle and a second non-magnetic vehicle, and the non-magnetic bracket includes a first non-magnetic bracket and a second non-magnetic bracket; Accordingly, a standard magnetic field is determined, and magnetic field measurement data of the product to be tested is determined based on the standard magnetic field, the non-magnetic vehicle, the non-magnetic bracket and the magnetometer, including: A standard environmental magnetic field is generated on the non-magnetic guide rail by a standard field coil, and a first non-magnetic vehicle is passed through a first non-magnetic bracket; wherein a product to be tested is arranged on the first non-magnetic vehicle; Acquire first data of the magnetometer and record a first horizontal distance between the first non-magnetic bracket and the product to be tested; Placing the product to be tested on the second non-magnetic vehicle, and passing the second non-magnetic vehicle through the second non-magnetic support; Acquire second data of the magnetometer and record a second horizontal distance between the second non-magnetic bracket and the product to be tested; Magnetic field measurement data is determined based on the first data, the second data, the first horizontal distance, and the second horizontal distance.

[0007] In a possible implementation, determining the ambient background magnetic field, and determining the induced magnetic field measurement data based on the magnetic field measurement data and the ambient background magnetic field, includes: Remove the product to be tested from the non-magnetic vehicle and measure the environmental background magnetic field; The induced magnetic field measurement data is determined based on the difference between the environmental background magnetic field and the magnetic field measurement data.

[0008] In a possible implementation, determining a calculated magnetic field value includes: Construct magnetic field vector data based on the sensed magnetic field measurement data; determining dipole data, and determining magnetic moment vector data based on the dipole data; A magnetic field calculation value is determined based on the magnetic field vector data and the magnetic moment vector data.

[0009] In a possible implementation, constructing magnetic field vector data based on the sensed magnetic field measurement data includes: Determine the measurement point position of the data to be measured, and construct the magnetic field vector and the measurement point position vector based on the measurement point position of the data to be measured and the magnetic field measurement data; Magnetic field vector data is determined based on the magnetic field vector and the measuring point position vector.

[0010] In one possible implementation, determining dipole data, and determining magnetic moment vector data based on the dipole data, includes: Determine a dipole combination of the data to be measured; wherein the dipole combination includes at least two dipoles; determining a magnetic moment vector and a dipole position vector of at least two dipoles; Magnetic moment vector data is determined based on the magnetic moment vector and the dipole position vector.

[0011] In a possible implementation, performing inversion based on the error information and the error threshold and determining an inversion result include: When the error information is greater than the error threshold, the position and magnetic moment of the dipole combination are adjusted; Target dipole data is determined, and an inversion result is determined based on the target dipole data.

[0012] According to a second aspect of the embodiments of this specification, a spacecraft component magnetic sensing measurement and inversion device is provided, which is applied to a three-dimensional space magnetic field measurement device. The three-dimensional space magnetic field measurement device includes a non-magnetic guide rail, a non-magnetic vehicle, a non-magnetic bracket and a magnetometer. The device includes: A magnetic field measurement module is configured to determine a standard magnetic field, and determine magnetic field measurement data of the product to be tested based on the standard magnetic field, the non-magnetic vehicle, the non-magnetic bracket and the magnetometer; A magnetic sensing data module is configured to determine the environmental background magnetic field, and determine the magnetic sensing field measurement data based on the magnetic field measurement data and the environmental background magnetic field; An error determination module is configured to determine a magnetic field calculation value, and to determine error information based on the magnetic field calculation value and the sensed magnetic field measurement data; The inversion result module is configured to perform inversion based on the error information and the error threshold to determine the inversion result.

[0013] According to a third aspect of an embodiment of this specification, a computing device is provided, including: Memory and processor; The memory is used to store computer executable instructions, and the processor is used to execute the computer executable instructions. When the computer executable instructions are executed by the processor, the steps of the above-mentioned method for magnetic induction measurement and inversion of spacecraft components are implemented.

[0014] According to a fourth aspect of the embodiments of this specification, a computer-readable storage medium is provided, which stores computer-executable instructions, and when the instructions are executed by a processor, the steps of the above-mentioned method for magnetic induction measurement and inversion of spacecraft components are implemented.

[0015] According to a fifth aspect of the embodiments of the present specification, a computer program is provided, wherein when the computer program is executed in a computer, the computer is caused to execute the steps of the above-mentioned method for magnetic induction measurement and inversion of spacecraft components.

[0016] The embodiments of this specification provide a method and device for measuring and inverting the inductive magnetic field of spacecraft components, wherein the method includes: determining a standard magnetic field, determining magnetic field measurement data of the product to be tested based on the standard magnetic field, a non-magnetic vehicle, a non-magnetic bracket and a magnetometer; determining an environmental background magnetic field, determining the inductive magnetic field measurement data based on the magnetic field measurement data and the environmental background magnetic field; determining a magnetic field calculation value, determining error information based on the magnetic field calculation value and the inductive magnetic field measurement data; performing an inversion based on the error information and the error threshold, and determining an inversion result. The method can realize rapid measurement of the three-dimensional inductive magnetic field of the measured component, and compared with the existing single-measurement-point magnetic dipole equivalent model, it has higher accuracy and can more accurately reflect the spatial magnetic field characteristics of the measured component, which is conducive to accurately evaluating the inductive magnetic influence of the component on the spacecraft's spatial magnetic field detection payload. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a flow chart of a method for magnetic induction measurement and inversion of spacecraft components provided by an embodiment of this specification; Figure 2 It is a schematic diagram of a three-dimensional magnetic field measurement device for a magnetic field measurement and inversion method of a spacecraft component provided by an embodiment of the present specification; Figure 3 It is a schematic diagram of magnetic field measurement of a magnetic field measurement and inversion method of a spacecraft component provided by an embodiment of this specification; Figure 4 It is a schematic diagram of three-dimensional magnetic field data of a method for magnetic induction measurement and inversion of spacecraft components provided by an embodiment of this specification; Figure 5 It is a schematic diagram of the structure of a magnetic induction measurement and inversion device for spacecraft components provided by one embodiment of this specification; Figure 6 It is a structural block diagram of a computing device provided by an embodiment of this specification. DETAILED DESCRIPTION

[0018] Many specific details are described in the following description to facilitate a full understanding of this specification. However, this specification can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of this specification, so this specification is not limited to the specific implementation disclosed below.

[0019] The terms used in one or more embodiments of this specification are only for the purpose of describing specific embodiments, and are not intended to limit one or more embodiments of this specification. The singular forms of "a" and "the" used in one or more embodiments of this specification and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in one or more embodiments of this specification refers to and includes any or all possible combinations of one or more associated listed items.

[0020] It should be understood that although the terms first, second, etc. may be used to describe various information in one or more embodiments of this specification, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of one or more embodiments of this specification, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0021] In this specification, a method for magnetic induction measurement and inversion of spacecraft components is provided. This specification also relates to a magnetic induction measurement and inversion device for spacecraft components, a computing device, and a computer-readable storage medium, which are described in detail one by one in the following embodiments.

[0022] See also Figure 1 , Figure 1 A flow chart of a method for magnetic sensing measurement and inversion of spacecraft components provided according to an embodiment of the present specification is shown, which is applied to a three-dimensional magnetic field measurement device. The three-dimensional magnetic field measurement device includes a non-magnetic guide rail, a non-magnetic vehicle, a non-magnetic bracket and a magnetometer, and specifically includes the following steps.

[0023] Step 101: determine a standard magnetic field, and determine magnetic field measurement data of the product to be tested based on the standard magnetic field, a non-magnetic vehicle, a non-magnetic bracket, and a magnetometer.

[0024] In a possible implementation, the non-magnetic vehicle includes a first non-magnetic vehicle and a second non-magnetic vehicle, and the non-magnetic bracket includes a first non-magnetic bracket and a second non-magnetic bracket; accordingly, a standard magnetic field is determined, and magnetic field measurement data of a product to be tested is determined based on the standard magnetic field, the non-magnetic vehicle, the non-magnetic bracket and the magnetometer, including: generating a standard environmental magnetic field on a non-magnetic guide rail through a standard field coil, and passing the first non-magnetic vehicle through the first non-magnetic bracket; wherein the product to be tested is arranged on the first non-magnetic vehicle; obtaining first data of the magnetometer and recording a first horizontal distance between the first non-magnetic bracket and the product to be tested; placing the product to be tested on the second non-magnetic vehicle, and passing the second non-magnetic vehicle through the second non-magnetic bracket; obtaining second data of the magnetometer and recording a second horizontal distance between the second non-magnetic bracket and the product to be tested; and determining magnetic field measurement data based on the first data, the second data, the first horizontal distance and the second horizontal distance.

[0025] In practical applications, see Figure 2 , Figure 2 The schematic diagram of the three-dimensional space sensing magnetic field measuring device of this scheme is composed of two sets of non-magnetic guide rails, non-magnetic product vehicles, non-magnetic brackets and magnetometers. Specifically, 1 is a standard field coil, 2 is a non-magnetic guide rail 1, 3 is a non-magnetic bracket 1, 4 is a non-magnetic product vehicle 1, 5 is a non-magnetic guide rail 2, 6 is a non-magnetic bracket 2, 7 is a non-magnetic product vehicle 2, and 8 is a measuring magnetometer.

[0026] For details, see Figure 3 Based on the space environment magnetic field of the spacecraft orbit, a standard environment magnetic field of the spacecraft orbit is generated by using a standard field coil; the component to be tested is placed on a non-magnetic product cart 1, and the product cart and the component to be tested are passed through a non-magnetic bracket 3 through a non-magnetic guide rail, the reading of the magnetometer on the non-magnetic bracket 3 is collected, and the horizontal distance between the center of the product and the center of the non-magnetic bracket 3 is recorded; the component to be tested is placed on a non-magnetic product cart 7, and the product cart and the component to be tested are passed through a non-magnetic bracket 6 through a non-magnetic guide rail 5, the reading of the magnetometer on the non-magnetic bracket 3 is collected, and the horizontal distance between the center of the product and the center of the non-magnetic bracket 3 is recorded.

[0027] Step 102: Determine the environmental background magnetic field, and determine the induced magnetic field measurement data based on the magnetic field measurement data and the environmental background magnetic field.

[0028] In one possible implementation, the environmental background magnetic field is determined, and the induced magnetic field measurement data is determined based on the magnetic field measurement data and the environmental background magnetic field, including: removing the product to be tested from the non-magnetic vehicle and measuring the environmental background magnetic field; and determining the induced magnetic field measurement data based on the difference between the environmental background magnetic field and the magnetic field measurement data.

[0029] In actual applications, the component under test is removed from the product vehicle and the environmental background magnetic field is measured; the magnetic field measurement data when the component under test passes is subtracted from the environmental background magnetic field to obtain the induced magnetic field measurement data of the component under test.

[0030] Step 103: Determine a calculated magnetic field value, and determine error information based on the calculated magnetic field value and the sensed magnetic field measurement data.

[0031] Further, determining the calculated magnetic field value includes: constructing magnetic field vector data based on the induced magnetic field measurement data; determining dipole data, and determining magnetic moment vector data based on the dipole data; and determining the calculated magnetic field value based on the magnetic field vector data and the magnetic moment vector data.

[0032] In a possible implementation, constructing magnetic field vector data based on the sensed magnetic field measurement data includes: determining the measurement point position of the data to be measured, constructing a magnetic field vector and a measurement point position vector based on the measurement point position of the data to be measured and the sensed magnetic field measurement data; and determining the magnetic field vector data based on the magnetic field vector and the measurement point position vector.

[0033] In practical applications, see Figure 4 , using the measured magnetic field data of the measured component and its corresponding measuring point position, construct the three-dimensional magnetic field vector and measuring point position vector of the measured component, and convert 3n s Vector b t Defined as n s The magnetic field vector at the measurement point is 3n s Vector r s Defined as n s The position vector of each measurement point.

[0034] In one possible implementation, determining dipole data, and determining magnetic moment vector data based on the dipole data, includes: determining a dipole combination of data to be measured; wherein the dipole combination includes at least two dipoles; determining the magnetic moment vector and the dipole position vector of at least two dipoles; and determining the magnetic moment vector data based on the magnetic moment vector and the dipole position vector.

[0035] In practical applications, the initial magnetic dipole combination of the measured component is defined as n d magnetic dipoles, then 3n d The dimension vector m is defined as n d The magnetic moment vector of the magnetic dipole is 3n d The dimension vector r is defined as n d The position vector of a magnetic dipole.

[0036] Furthermore, the magnetic field value at the measurement point is calculated using the magnetic dipole combination. Definition 3n s Dimensional vector b c The calculated value of the magnetic field of the magnetic dipole combination at the measuring point is: (2) G for G ik ofn s ×n d dimensional matrix, is a 3×3 matrix, which can be obtained by the following formula (3) in, r si For the i The position vector of each measurement point; r dk For the k The magnetic dipole position vector.

[0037] The error between the measured magnetic field value and the calculated magnetic field value is calculated, and the error between the measured magnetic field value and the calculated magnetic field is calculated using the mean square error function of the measured magnetic field value and the calculated magnetic field. The mean square error function c is defined as follows: (4) (5) Among them, b t For spacecraft n s The magnetic field vector at the measurement point; b c Calculate the magnetic field of the magnetic dipole combination at the measurement point; G for G ik of n s ×n d dimensional matrix, G ik It is calculated by formula (3).

[0038] Step 104: Perform inversion based on the error information and the error threshold, and determine the inversion result.

[0039] In a possible implementation, inversion is performed based on error information and an error threshold, and an inversion result is determined, including: when the error information is greater than the error threshold, adjusting the position and magnetic moment of the dipole combination; determining target dipole data, and determining the inversion result based on the target dipole data.

[0040] In practical applications, it is determined whether the error between the measured magnetic field value and the calculated magnetic field value meets the defined error.

[0041] If the error calculated by formula (5) is less than the predefined error, the magnetic dipole combination is the multi-magnetic dipole model of the measured component; if the error is greater than the defined error, the following steps are performed to adjust the position and magnetic moment of the magnetic dipole combination.

[0042] Specifically, the position and magnetic moment of the new magnetic dipole combination are adjusted, and the position vector calculation formula of the new magnetic dipole combination is: (6) Among them, r opt , r are the new magnetic dipole position vector and the old magnetic dipole position vector respectively; e is calculated by equation (4); J is the Jacobi matrix of e, which can be calculated by finite difference method (7) λ The step factor value can be obtained by a linear search algorithm. Let σ1∈(0,1 / 2), ρ∈(0,1), λ k =ρ i , i=0,1,2,…, then λ k is the maximum value for which the following equation holds true: (8) in, .

[0043] The calculation formula of the magnetic moment vector of the new magnetic dipole combination is: (9) in, G for G ik of n s ×n d dimensional matrix, G ik Calculated by formula (2); b t For spacecraft n s The magnetic field vector at each measuring point.

[0044] Next, the calculated magnetic field value at the measurement point is calculated using the position vector and magnetic moment vector of the new magnetic dipole combination.

[0045] The embodiments of this specification provide a method and device for measuring and inverting the inductive magnetic field of spacecraft components, wherein the method includes: determining a standard magnetic field, determining magnetic field measurement data of the product to be tested based on the standard magnetic field, a non-magnetic vehicle, a non-magnetic bracket and a magnetometer; determining an environmental background magnetic field, determining the inductive magnetic field measurement data based on the magnetic field measurement data and the environmental background magnetic field; determining a magnetic field calculation value, determining error information based on the magnetic field calculation value and the inductive magnetic field measurement data; performing an inversion based on the error information and the error threshold, and determining an inversion result. The method can realize rapid measurement of the three-dimensional inductive magnetic field of the measured component, and compared with the existing single-measurement-point magnetic dipole equivalent model, it has higher accuracy and can more accurately reflect the spatial magnetic field characteristics of the measured component, which is conducive to accurately evaluating the inductive magnetic influence of the component on the spacecraft's spatial magnetic field detection payload.

[0046] Corresponding to the above method embodiment, this specification also provides an embodiment of a magnetic induction measurement and inversion device for spacecraft components. Figure 5 FIG. 1 is a schematic diagram showing the structure of a magnetic sensing measurement and inversion device for spacecraft components provided by an embodiment of the present specification. Figure 5 As shown, the device is applied to a three-dimensional space-sensing magnetic field measuring device, which includes a non-magnetic guide rail, a non-magnetic vehicle, a non-magnetic bracket and a magnetometer. The device includes: The magnetic field measurement module 501 is configured to determine a standard magnetic field, and determine magnetic field measurement data of the product to be tested based on the standard magnetic field, the non-magnetic vehicle, the non-magnetic bracket and the magnetometer; The magnetic sensing data module 502 is configured to determine the environmental background magnetic field, and determine the magnetic sensing field measurement data based on the magnetic field measurement data and the environmental background magnetic field; The error determination module 503 is configured to determine a magnetic field calculation value, and to determine error information based on the magnetic field calculation value and the sensed magnetic field measurement data; The inversion result module 504 is configured to perform inversion based on the error information and the error threshold to determine the inversion result.

[0047] In a possible implementation, the non-magnetic vehicle includes a first non-magnetic vehicle and a second non-magnetic vehicle, and the non-magnetic bracket includes a first non-magnetic bracket and a second non-magnetic bracket; Accordingly, a standard magnetic field is determined, and magnetic field measurement data of the product to be tested is determined based on the standard magnetic field, the non-magnetic vehicle, the non-magnetic bracket and the magnetometer, including: A standard environmental magnetic field is generated on the non-magnetic guide rail by a standard field coil, and a first non-magnetic vehicle is passed through a first non-magnetic bracket; wherein a product to be tested is arranged on the first non-magnetic vehicle; Acquire first data of the magnetometer and record a first horizontal distance between the first non-magnetic bracket and the product to be tested; Placing the product to be tested on the second non-magnetic vehicle, and passing the second non-magnetic vehicle through the second non-magnetic support; Acquire second data of the magnetometer and record a second horizontal distance between the second non-magnetic bracket and the product to be tested; Magnetic field measurement data is determined based on the first data, the second data, the first horizontal distance, and the second horizontal distance.

[0048] In a possible implementation, determining the ambient background magnetic field, and determining the induced magnetic field measurement data based on the magnetic field measurement data and the ambient background magnetic field, includes: Remove the product to be tested from the non-magnetic vehicle and measure the environmental background magnetic field; The induced magnetic field measurement data is determined based on the difference between the environmental background magnetic field and the magnetic field measurement data.

[0049] In a possible implementation manner, determining a calculated magnetic field value includes: Construct magnetic field vector data based on the sensed magnetic field measurement data; determining dipole data, and determining magnetic moment vector data based on the dipole data; A magnetic field calculation value is determined based on the magnetic field vector data and the magnetic moment vector data.

[0050] In a possible implementation, constructing magnetic field vector data based on the sensed magnetic field measurement data includes: Determine the measurement point position of the data to be measured, and construct the magnetic field vector and the measurement point position vector based on the measurement point position of the data to be measured and the magnetic field measurement data; Magnetic field vector data is determined based on the magnetic field vector and the measuring point position vector.

[0051] In one possible implementation, determining dipole data, and determining magnetic moment vector data based on the dipole data, includes: Determine a dipole combination of the data to be measured; wherein the dipole combination includes at least two dipoles; determining a magnetic moment vector and a dipole position vector of at least two dipoles; Magnetic moment vector data is determined based on the magnetic moment vector and the dipole position vector.

[0052] In a possible implementation, performing inversion based on the error information and the error threshold and determining an inversion result include: When the error information is greater than the error threshold, the position and magnetic moment of the dipole combination are adjusted; Target dipole data is determined, and an inversion result is determined based on the target dipole data.

[0053] The embodiments of this specification provide a method and device for measuring and inverting the inductive magnetic field of spacecraft components, wherein the method includes: determining a standard magnetic field, determining magnetic field measurement data of the product to be tested based on the standard magnetic field, a non-magnetic vehicle, a non-magnetic bracket and a magnetometer; determining an environmental background magnetic field, determining the inductive magnetic field measurement data based on the magnetic field measurement data and the environmental background magnetic field; determining a magnetic field calculation value, determining error information based on the magnetic field calculation value and the inductive magnetic field measurement data; performing an inversion based on the error information and the error threshold, and determining an inversion result. The method can realize rapid measurement of the three-dimensional inductive magnetic field of the measured component, and compared with the existing single-measurement-point magnetic dipole equivalent model, it has higher accuracy and can more accurately reflect the spatial magnetic field characteristics of the measured component, which is conducive to accurately evaluating the inductive magnetic influence of the component on the spacecraft's spatial magnetic field detection payload.

[0054] The above is a schematic scheme of a magnetic sensing measurement and inversion device for spacecraft components of this embodiment. It should be noted that the technical scheme of the magnetic sensing measurement and inversion device for spacecraft components and the technical scheme of the magnetic sensing measurement and inversion method for spacecraft components described above belong to the same concept, and the details not described in detail in the technical scheme of the magnetic sensing measurement and inversion device for spacecraft components can be referred to the description of the technical scheme of the magnetic sensing measurement and inversion method for spacecraft components described above.

[0055] Figure 6 The block diagram of a computing device 600 according to an embodiment of the present specification is shown. The components of the computing device 600 include but are not limited to a memory 610 and a processor 620. The processor 620 is connected to the memory 610 via a bus 630, and the database 650 is used to store data.

[0056] The computing device 600 also includes an access device 640 that enables the computing device 600 to communicate via one or more networks 660. Examples of these networks include a public switched telephone network (PSTN), a local area network (LAN), a wide area network (WAN), a personal area network (PAN), or a combination of communication networks such as the Internet. The access device 640 may include one or more of any type of network interface (e.g., a network interface card (NIC)) that is wired or wireless, such as an IEEE 802.11 wireless local area network (WLAN) wireless interface, a world-wide interoperability for microwave access (Wi-MAX) interface, an Ethernet interface, a universal serial bus (USB) interface, a cellular network interface, a Bluetooth interface, and a near field communication (NFC).

[0057] In one embodiment of the present specification, the above components of the computing device 600 and Figure 6 Other components not shown in the figure may also be connected to each other, for example, via a bus. It should be understood that Figure 6 The computing device structure block diagram shown is only for the purpose of illustration, and is not intended to limit the scope of this specification. Those skilled in the art can add or replace other components as needed.

[0058] The computing device 600 may be any type of stationary or mobile computing device, including a mobile computer or mobile computing device (e.g., a tablet computer, a personal digital assistant, a laptop computer, a notebook computer, a netbook, etc.), a mobile phone (e.g., a smart phone), a wearable computing device (e.g., a smart watch, smart glasses, etc.), or other types of mobile devices, or a stationary computing device such as a desktop computer or a personal computer (PC). The computing device 600 may also be a mobile or stationary server.

[0059] The processor 620 is used to execute the following computer executable instructions, which, when executed by the processor, implement the steps of the above-mentioned method for magnetic induction measurement and inversion of spacecraft components. The above is a schematic scheme of a computing device of this embodiment. It should be noted that the technical scheme of the computing device and the technical scheme of the above-mentioned method for magnetic induction measurement and inversion of spacecraft components belong to the same concept. For details not described in detail in the technical scheme of the computing device, please refer to the description of the technical scheme of the above-mentioned method for magnetic induction measurement and inversion of spacecraft components.

[0060] An embodiment of the present specification also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the above-mentioned method for magnetic induction measurement and inversion of spacecraft components.

[0061] The above is a schematic scheme of a computer-readable storage medium of this embodiment. It should be noted that the technical scheme of the storage medium and the technical scheme of the above-mentioned spacecraft component magnetic induction measurement and inversion method belong to the same concept, and the details not described in detail in the technical scheme of the storage medium can be referred to the description of the technical scheme of the above-mentioned spacecraft component magnetic induction measurement and inversion method.

[0062] An embodiment of the present specification also provides a computer program, wherein when the computer program is executed in a computer, the computer is caused to execute the steps of the above-mentioned method for magnetic induction measurement and inversion of spacecraft components.

[0063] The above is a schematic scheme of a computer program of this embodiment. It should be noted that the technical scheme of the computer program and the technical scheme of the above-mentioned spacecraft component magnetic induction measurement and inversion method belong to the same concept, and the details not described in detail in the technical scheme of the computer program can be referred to the description of the technical scheme of the above-mentioned spacecraft component magnetic induction measurement and inversion method.

[0064] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0065] The computer instructions include computer program codes, which may be in source code form, object code form, executable files or some intermediate forms, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer-readable medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electric carrier signals and telecommunication signals.

[0066] It should be noted that, for the above-mentioned method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the embodiments of this specification are not limited by the order of the actions described, because according to the embodiments of this specification, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the embodiments of this specification.

[0067] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0068] The preferred embodiments of this specification disclosed above are only used to help explain this specification. The optional embodiments do not describe all the details in detail, nor do they limit the invention to only the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of the embodiments of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the embodiments of this specification, so that technicians in the relevant technical field can well understand and use this specification. This specification is only limited by the claims and their full scope and equivalents.

Claims

1. A method for magnetic induction measurement and inversion of spacecraft components, characterized in that: Applied to a three-dimensional space-sensing magnetic field measuring device, the three-dimensional space-sensing magnetic field measuring device comprises a non-magnetic guide rail, a non-magnetic vehicle, a non-magnetic bracket and a magnetometer, and the method comprises: Determine a standard magnetic field, and determine magnetic field measurement data of the product to be tested based on the standard magnetic field, the non-magnetic vehicle, the non-magnetic bracket and the magnetometer; Determine the environmental background magnetic field, and determine the induced magnetic field measurement data based on the magnetic field measurement data and the environmental background magnetic field; Determine a magnetic field calculation value, and determine error information based on the magnetic field calculation value and the sensed magnetic field measurement data; Based on the error information and the error threshold, an inversion is performed to determine an inversion result.

2. The method according to claim 1, characterized in that The non-magnetic vehicle comprises a first non-magnetic vehicle and a second non-magnetic vehicle, and the non-magnetic bracket comprises a first non-magnetic bracket and a second non-magnetic bracket; Accordingly, the determining of the standard magnetic field, based on the standard magnetic field, the non-magnetic vehicle, the non-magnetic bracket and the magnetometer, determines the magnetic field measurement data of the product to be tested, including: Generate a standard environmental magnetic field on the non-magnetic guide rail by using a standard field coil, and pass the first non-magnetic vehicle through the first non-magnetic bracket; wherein the product to be tested is arranged on the first non-magnetic vehicle; Acquire first data of the magnetometer and record a first horizontal distance between the first non-magnetic bracket and the product to be tested; Placing the product to be tested on the second non-magnetic vehicle, and passing the second non-magnetic vehicle through the second non-magnetic support; Acquire second data of the magnetometer and record a second horizontal distance between the second non-magnetic bracket and the product to be tested; Magnetic field measurement data is determined based on the first data, the second data, the first horizontal distance, and the second horizontal distance.

3. The method according to claim 1, characterized in that The determining of the environmental background magnetic field, and determining the induced magnetic field measurement data based on the magnetic field measurement data and the environmental background magnetic field, comprises: The product to be tested is removed from the non-magnetic vehicle, and the environmental background magnetic field is measured; The induced magnetic field measurement data is determined based on the difference between the environmental background magnetic field and the magnetic field measurement data.

4. The method according to claim 1, characterized in that: The step of determining the calculated magnetic field value comprises: Constructing magnetic field vector data based on the sensed magnetic field measurement data; determining dipole data, and determining magnetic moment vector data based on the dipole data; A magnetic field calculation value is determined based on the magnetic field vector data and the magnetic moment vector data.

5. The method according to claim 4, characterized in that The constructing magnetic field vector data based on the sensed magnetic field measurement data comprises: Determine the measurement point position of the data to be measured, and construct a magnetic field vector and a measurement point position vector based on the measurement point position of the data to be measured and the magnetic field sensing data; Magnetic field vector data is determined based on the magnetic field vector and the measuring point position vector.

6. The method according to claim 4, characterized in that The determining of the dipole data, and determining the magnetic moment vector data based on the dipole data, comprises: Determine a dipole combination of the data to be measured; wherein the dipole combination includes at least two dipoles; determining a magnetic moment vector and a dipole position vector of the at least two dipoles; Magnetic moment vector data is determined based on the magnetic moment vector and the dipole position vector.

7. The method according to claim 6, characterized in that The step of performing inversion based on the error information and the error threshold and determining an inversion result comprises: When the error information is greater than the error threshold, adjusting the position and magnetic moment of the dipole combination; Target dipole data is determined, and an inversion result is determined based on the target dipole data.

8. A magnetic induction measurement and inversion device for spacecraft components, characterized in that: Applicable to a three-dimensional space-sensing magnetic field measuring device, the three-dimensional space-sensing magnetic field measuring device comprises a non-magnetic guide rail, a non-magnetic vehicle, a non-magnetic bracket and a magnetometer, and the device comprises: A magnetic field measurement module is configured to determine a standard magnetic field, and determine magnetic field measurement data of the product to be tested based on the standard magnetic field, the non-magnetic vehicle, the non-magnetic bracket and the magnetometer; A magnetic induction data module is configured to determine an environmental background magnetic field, and determine the magnetic induction magnetic field measurement data based on the magnetic field measurement data and the environmental background magnetic field; an error determination module, configured to determine a magnetic field calculation value, and determine error information based on the magnetic field calculation value and the sensed magnetic field measurement data; The inversion result module is configured to determine to perform inversion based on the error information and the error threshold, and determine the inversion result.

9. A computing device, characterized in that include: Memory and processor; The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the method for magnetic induction measurement and inversion of spacecraft components described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the method for magnetic induction measurement and inversion of spacecraft components as described in any one of claims 1 to 7.

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