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Solenoid magnetic field mathematical model analysis and calculation method

A mathematical model and calculation method technology, applied in calculation, computer-aided design, electrical digital data processing, etc., can solve problems such as the inability to quickly and accurately give the influence of displacement current and eddy current on the magnetic field distribution of the solenoid

Pending Publication Date: 2019-09-20
ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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Problems solved by technology

However, the existing mathematical model analysis and calculation methods of the solenoid magnetic field cannot quickly and accurately give the influence of the displacement current and eddy current on the distribution of the solenoid magnetic field.

Method used

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  • Solenoid magnetic field mathematical model analysis and calculation method
  • Solenoid magnetic field mathematical model analysis and calculation method
  • Solenoid magnetic field mathematical model analysis and calculation method

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Embodiment 1

[0074] see Figure 1-3 , the mathematical model analysis and calculation method of the solenoid magnetic field comprises the following steps:

[0075] S1: Establish a mathematical model of the magnetic field of the solenoid. When the model is established, the sinusoidal alternating current change of the current on the long straight solenoid will produce a sinusoidal alternating current magnetic field, and the changing magnetic field will also produce a changing eddy current. The electric field It will react on the magnetic field and affect the distribution of the magnetic field, and the change of the conduction current in the coil does not directly affect the magnetic field distribution, so only the displacement current and eddy current pair are discussed The influence of the distribution, set the displacement current Eddy current Supplement the following three constitutive equations:

[0076] D=εE 1-1

[0077] B=μH 1-2

[0078] J=γE 1-3

[0079] The constitutive eq...

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Abstract

The invention discloses a solenoid magnetic field mathematical model analysis and calculation method, and belongs to the field of mathematical model analysis and calculation methods. The method comprises the following steps: S1, building a solenoid magnetic field mathematical model, when a model is built in the S1, a sinusoidal alternating current change of a current generates a sinusoidal alternating current change magnetic field on a long straight solenoid, and the changed magnetic field also generates a changed eddy current; S2, a magnetic field distribution algorithm under the condition that no conductor exists in the solenoid is set and solved; S3, a magnetic field distribution algorithm under the condition that a conductor exists in the solenoid is set and solved; and S4, the mathematical model is analyzed after calculation to obtain a conclusion. The analysis and calculation method is more scientific and reasonable, the radial distribution of the alternating magnetic field in the long straight solenoid can be nonuniform by establishing a solenoid magnetic field mathematical model and through the analysis and calculation method, and the method is not only affected by a changing angular frequency, but also related to whether a conductor exists in the magnetic field or not.

Description

technical field [0001] The invention relates to the field of mathematical model analysis and calculation methods, in particular to a solenoid magnetic field mathematical model analysis and calculation method. Background technique [0002] A changing magnetic field produces an electric field, and a changing electric field also produces a magnetic field. Therefore, if the changing magnetic field distribution is not affected by the electric field it produces, then the electric field must be constant. According to the Ampere loop theorem, under the condition of steady current, the magnetic field in the long straight solenoid is uniformly distributed. When the current changes, the magnetic field inside the tube will inevitably change accordingly. If the vortex electric field generated thereby has no reaction to the magnetic field, the distribution of the magnetic field will still remain uniform. If the vortex electric field has no reaction to the magnetic field, that is, to kee...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 毛保全白向华张天意杨雨迎李程李华朱锐郑博文
Owner ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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