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Simulated degaussing current generating device for degaussing magnetic shielding cylinder

A technology of magnetic shielding cylinder and degaussing current, which is applied in the direction of circuits, magnetic objects, electrical components, etc., can solve problems such as unevenness, discontinuous degaussing process, different remanence sizes and remanence distributions, and achieve continuous and controllable waveforms, Good demagnetization effect

Active Publication Date: 2021-03-19
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, during the whole degaussing process, the traditional manual degausser, the degaussing current waveform generated by the secondary coil group connected to the inner magnetic shielding barrel is affected by different personnel and different lifting speeds, resulting in different manual degaussing every time. Remanence size and remanence distribution, that is, demagnetization repeatability and quantification cannot be reliably guaranteed
In addition, although the program-controlled degausser can solve the problem of degaussing remanence repeatability, the digital-to-analog conversion of the program-controlled degausser will generate a ladder current, that is, the degaussing current is continuous but not smooth, which will lead to the actual discontinuous problem of the degaussing process, and then appear Degaussing remanence has great randomness, and the consequence of degaussing remanence is too large

Method used

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  • Simulated degaussing current generating device for degaussing magnetic shielding cylinder

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Effect test

Embodiment 1

[0020] Such as figure 1 As shown, the present invention is an analog degaussing current generating device for degaussing a magnetic shielding tube, comprising a degaussing primary coil group 1, a degaussing secondary coil group 2 and a coil translation device 3; the degaussing primary coil group 1 and the degaussing secondary The coil set 2 is coaxially arranged, and the degaussing primary coil set 1 includes a primary solenoid 11, a primary coil 12 and a primary support 13, and the primary coil 12 is uniformly wound on the primary solenoid 11; the primary The solenoid 11 is fixed on a horizontal plane by said primary bracket 13 . The degaussing secondary coil set 2 includes a secondary solenoid 21 , a secondary coil 22 and a secondary bracket; the secondary coil 22 is evenly wound on the secondary solenoid 21 . The primary coil 12 passes a sinusoidal alternating current with a predetermined frequency and a predetermined amplitude during operation, and the predetermined ampli...

Embodiment 2

[0024] The difference from the above embodiments is that the primary solenoid 11 is fixed on the primary bracket 13, and the primary bracket 13 is fixed on the moving part of the guide rail, or the primary bracket 13 is the moving part of the guide rail. Component 131; the secondary solenoid 21 is fixed on a horizontal plane through the secondary bracket. The axis of the degaussing secondary coil group 2 coincides with the axis of the degaussing primary coil group 1 and the diameter of the secondary solenoid 21 is smaller than the diameter of the primary solenoid 11, and the degaussing primary coil group 1 The whole body can move steadily and slowly at a set speed along its axis direction under the control of the speed control module, that is, from one side of the degaussing secondary coil group 2 to the other side. In this way, the process in which the peak magnetic flux of the secondary coil 22 first increases and then decreases is realized and completed, so that the demagne...

Embodiment 3

[0026]Different from the above embodiments, the horizontal guide rail mechanism 31 includes a first horizontal guide rail mechanism and a second horizontal guide rail mechanism, the primary solenoid 11 is fixed on the primary bracket 13, and the primary bracket 13 is fixed on the On the first guide rail moving part of the first horizontal guide rail mechanism, or the primary bracket 13 is the first guide rail moving part; the secondary solenoid 21 is fixed on the second level by the secondary bracket The second guide rail moving part of the guide rail mechanism, or the primary support 13 is the second guide rail moving part. The axis of the degaussing secondary coil group 2 coincides with the axis of the degaussing primary coil group 1 and the diameter of the secondary solenoid 21 is smaller than the diameter of the primary solenoid 11, and the first horizontal guide rail is along the The axis direction of the degaussing primary coil group 1 is arranged on a horizontal plane, ...

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Abstract

The invention discloses a simulated degaussing current generating device for degaussing of a magnetic shielding cylinder. A degaussing secondary coil group can stably and slowly move from one side ofa degaussing primary coil group to the other side of the degaussing primary coil group according to the speed set by the speed control module through the coil translation device; therefore, the process that the peak magnetic flux of the secondary coil is increased and then decreased is achieved and completed, the degaussing current changes quantitatively and smoothly, and a better demagnetizationeffect is provided. In addition, a horizontal guide rail mechanism and a speed control module are used, the moving speed of the degaussing secondary coil set is accurately controlled, the waveform ofthe generated degaussing current is continuous and controllable, the analog control of any current waveform is realized, and analysis of demagnetization repeatability and quantitative demagnetizationaccuracy of the magnetic shielding barrel is facilitated. The problem that the actual demagnetization process is discontinuous due to the fact that stepped current is generated by digital-to-analog conversion of the program-controlled demagnetizer, namely demagnetization current is continuous but not smooth, can be avoided.

Description

technical field [0001] The invention relates to an analog degaussing current generating device for degaussing a magnetic shielding tube, which can generate a stable and reproducible analog degaussing current for eliminating the residual magnetism of a magnetic shielding tube material, belongs to the technical field of degaussing devices, and is especially suitable for magnetic Research on degaussing of shielding barrels, quantitative testing and analysis of degaussing, smooth and continuous control of degaussing current, etc. Background technique [0002] In recent years, with the continuous development of quantum precision measurement technology, the measurement limit of many physical quantities has been continuously improved. Among them, the field weakening measurement has also entered a new era. At present, for quantum precision measurement fields such as ultra-high sensitive atomic magnetometers and atomic gyroscopes, high-performance magnetic shielding tubes are require...

Claims

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Application Information

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IPC IPC(8): H01F13/00
CPCH01F13/006
Inventor 陆吉玺王耀国杨可韩邦成全伟刘刚房建成
Owner BEIHANG UNIV