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Double-coil structure for nuclear magnetic resonance gyroscope high-precision magnetic field control

A nuclear magnetic resonance gyro and double-coil structure technology, applied in the direction of coils, steering induction equipment, electrical components, etc., can solve the problems of insufficient control precision of static magnetic field strength, etc., and achieve improved magnetic field uniformity, small size, and improved shielding effect Effect

Active Publication Date: 2016-10-12
BEIJING INST OF AEROSPACE CONTROL DEVICES
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Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the deficiencies in the prior art, to provide a double-coil structure for high-precision magnetic field control of nuclear magnetic resonance gyroscopes, to solve the problem of insufficient control precision of the static magnetic field intensity in nuclear magnetic resonance gyroscopes, and to realize the static magnetic field High-precision stable control of strength

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  • Double-coil structure for nuclear magnetic resonance gyroscope high-precision magnetic field control

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Embodiment Construction

[0031] The basic idea of ​​the present invention is: the static magnetic field of the present invention adopts densely wound solenoid coils and Helmertz coils to co-generate; Wound solenoid coils are used to generate a stable strong magnetic field with high uniformity and are suitable for roughly adjusting the static magnetic field; Helm nuclear magnetic coils are used to compensate the residual magnetic field in the magnetic shielding cylinder, and their uniformity is poor, but the adjustment Higher precision.

[0032] Two sets of grooves are designed on the coil bobbin, the inside of the groove is used for winding the Helmertz coil, and the surrounding of the groove is used for winding the densely wound solenoid coil. The pitch of the grooves is the same as the radius of the grooves, enabling a standard Helmhertz coil design.

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] A d...

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Abstract

The invention relates to a double-coil structure for nuclear magnetic resonance gyroscope high-precision magnetic field control. According to the structure, a framework is used for fixing a close-wound solenoid coil and a Helmholtz coil. The static magnetic field is generated by the close-wound solenoid coil and Helmholtz coil together. The complete structure is arranged in a multilayer magnetic shielding cylinder, and the multilayer magnetic shielding cylinder can shield part of the magnetic field. The close-wound solenoid coil is used for generating a stable intense magnetic field, which has higher magnetic field uniformity and is suitable for roughly regulating the static magnetic field. The Helmholtz coil is used for compensating the remanent field in the magnetic shielding cylinder, and the generated magnetic field has lower intensity, poor uniformity and higher regulation precision. The two coils are matched, thereby reducing the device volume, and solving the problem of insufficient control precision in the numerical control electronic system. By adopting the double-coil structure, the control precision can be enhanced by 75 times.

Description

technical field [0001] The invention relates to the field of magnetic field generation of nuclear magnetic resonance gyroscopes, in particular to a high-precision magnetic field compensation structure. Background technique [0002] Miniature nuclear magnetic resonance gyroscopes have the characteristics of small size, low power consumption, high performance, and large dynamic range, and have become the research focus and hotspot of new inertial devices. The performance of the nuclear magnetic resonance gyroscope is affected by the stability of the static magnetic field strength. When the static magnetic field strength fluctuates, the gyro output also fluctuates. Therefore, in order to achieve a high-precision nuclear magnetic resonance gyroscope, it is necessary to achieve stable control of the static magnetic field strength. [0003] In order to achieve high-precision and stable control of the static magnetic field strength, it must be controlled by means of closed-loop fee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F5/02G01C19/60
CPCG01C19/60H01F5/02H01F2005/025
Inventor 邓意成刘院省阚宝玺王学锋石猛王妍李新坤周维洋
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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