Design and manufacturing method of a high-performance geomagnetic field simulator
A design method and technology for simulating devices, which are applied to measurement devices, ground navigation, instruments, etc., can solve the problems of reducing the use range of magnetic field generators, the open-loop control system cannot meet the requirements of high-precision magnetic field design, and the uniform range of the magnetic field is small.
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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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