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Designing and manufacturing method of high-performance geomagnetic field simulation device

A design method and magnetic field strength technology, applied in the direction of measuring devices, ground navigation, instruments, etc., can solve the problems of poor magnetic field uniformity, reducing the use range of magnetic field generators, and small uniform range of magnetic field

Inactive Publication Date: 2015-07-01
NORTHWESTERN POLYTECHNICAL UNIV
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AI Technical Summary

Problems solved by technology

[0003] Most of the traditional uniform magnetic field generators use circular or square Helmholtz coils to generate magnetic fields, that is, two coils parallel to each other are used to generate uniform magnetic fields on each axis. The uniformity of the magnetic field generated by this device is The range is relatively small, and the uniformity of the generated magnetic field is poor. If you want to obtain a uniform magnetic field in a larger area, you need to use a larger coil, which greatly reduces the range of use of the magnetic field generator in terms of performance.
In addition, a single open-loop control system cannot meet the design requirements for generating high-precision magnetic fields, that is, there is a large error between the actual generated magnetic field value and the designed magnetic field value

Method used

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  • Designing and manufacturing method of high-performance geomagnetic field simulation device
  • Designing and manufacturing method of high-performance geomagnetic field simulation device
  • Designing and manufacturing method of high-performance geomagnetic field simulation device

Examples

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Effect test

Embodiment 1

[0037] The design scheme of the magnetic field generator is given, and the theoretical formula of the magnetic field strength B generated by the magnetic field generator is derived. The magnetic field generator is a Merritt magnetic field generator, and the Merritt magnetic field generator has three sets of Merritt Coil, the magnetic field generation diagram of this Merritt coil is as follows figure 1 As shown, for the sake of simplicity, only a schematic diagram of one axis (x-axis direction) is given here. According to the physical principle, the formula for the magnetic field generated by the magnetic field generating device is as follows.

[0038] First define the symbols to be used as follows:

[0039] B is the magnitude of the magnetic field generated by the coil in the axis (x-axis) direction, and x is the distance from any point on the axis in the figure to the origin O. μ0 is the magnetic permeability in vacuum, N1 is figure 1 The number of turns of current-carryin...

Embodiment 2

[0043] The design and fabrication method of high-performance geomagnetic field simulator is given:

[0044] A. Find the optimal design solution. It can be seen from the formula that the variable parameters are N1, N2, L1 and L2. Use MATLAB software to write the above magnetic field strength as a program, and set N 1 , N 2 , L 1 and L 2 Set it as a variable parameter, and use the enumeration method to find a set of parameters corresponding to the region that produces the largest uniform magnetic field under the condition of satisfying the accuracy. The accuracy can be set according to actual needs, here it is set as: in the area of ​​uniform magnetic field, the change of magnetic field intensity is less than or equal to 0.1%. The optimal solution found is: Let the side length of the square coil be ɑ, then L 1 =L3=0.343ɑ, L 2 =0.307ɑ, the number of turns of coil 1 and coil 4 marked in the figure is 2, the number of turns of coil 2 and coil 3 is 1, and the synthetic magneti...

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Abstract

The invention discloses a designing and manufacturing method of a high-performance geomagnetic field simulation device. The designing and manufacturing method comprises the following steps: formulating a design method of a magnetic field generator, manufacturing the magnetic field generator according to the design method, and manufacturing the high-performance geomagnetic field simulation device by use of the magnetic field generator. A negative feedback method is also introduced in a working method of the high-performance geomagnetic field simulation device; output current can be finely adjusted correspondingly to control the size and the direction of the uniform magnetic field, and the design precision of the magnetic field generator is ensured; and the designed geomagnetic field simulation device has high precision and high response speed and can be used for accurately simulating the required geomagnetic field intensity.

Description

technical field [0001] The invention belongs to the technical field of magnetic field environment simulation, and in particular relates to a design and manufacturing method of a high-performance geomagnetic field simulation device. Background technique [0002] With the development of modern small satellite technology, satellite attitude determination and control methods are becoming more and more diverse, and using the geomagnetic field to achieve satellite attitude determination and control is one of the very practical and convenient methods at present. In order to effectively verify the correctness of satellite attitude determination and control system design, or to conduct control system fault simulation and fault countermeasure test research, it is necessary to design a ground full-physical or semi-physical simulation system. For the attitude determination method using the geomagnetic field vector and the pure magnetron attitude control method, it is necessary to simula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00G01C21/08
CPCG01C21/08G01C25/00
Inventor 冯乾杨家男刘勇黄煦晨王易周李毅兰潘泉
Owner NORTHWESTERN POLYTECHNICAL UNIV
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