Method for measuring a triaxial magnetic field coil quadrature angle

A magnetic field coil and measurement method technology, applied in the direction of the size/direction of the magnetic field, can solve the problems of high requirements for detection equipment and operators, and achieve the effects of simple operation, high measurement accuracy, and avoiding installation errors

Inactive Publication Date: 2013-06-05
CSIC NO 710 RES & DEV INST
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  • Abstract
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Problems solved by technology

[0004] In the implementation process of the above two methods, there are mechanical assembly operations, which need to find the datum plane and align the shaft, and have high requirements for the testing equipment and operators.

Method used

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  • Method for measuring a triaxial magnetic field coil quadrature angle

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Embodiment Construction

[0010] like figure 1 Shown to measure the angle between the x-axis and the z-axis As an example, the measurement process is divided into three steps:

[0011] 1) Measure the angle between the geomagnetic field E and the x-axis;

[0012] 2) Measure the angle between the z-axis and the plane XOE;

[0013] 3) Calculate the angle between the x-axis and the z-axis .

[0014] The specific measurement steps are as follows:

[0015] 1. Measure the angle between the geomagnetic field E and the x-axis: first record the magnitude of the geomagnetic field with an optical pump or a proton magnetometer, and record it as ;

[0016] Apply a magnetic field of the same strength as the earth's magnetic field in the direction of the x-axis ,like figure 1 As shown, OE is the direction of the geomagnetic field vector, and the other two axes do not apply a magnetic field. At this time, the output of the optical pump is recorded as , the angle between the X-axis and the geomagnetic ...

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Abstract

A method for measuring a triaxial magnetic field coil quadrature angle is disclosed. A magnetic field with a certain size is generated in a triaxial magnetic field coil. A value of a magnetic induction intensity amount can be read through equipment which is used to measure the magnetic induction intensity amount. And then an included angle between the coils can be calculated through a formula. The equipment of measuring the magnetic induction intensity amount is an optical pump or a proton magnetometer. By using the method provided in the invention, equipment movement and installation operation are not needed during measuring the quadrature angle of the triaxial coil; a horizontal state is not needed to be aligned and be searches; machinery assembling operation is not needed so that an installation error can be avoided. The method possesses advantages of high precision measurement, simple operation and the method is easy and convenient to be used. If the method is used to measure the quadrature angle of the magnetic field coil of a certain apparatus, the actual measured angle is 89.82 DEG and precision can reach 0.01DEG which is an order of magnitude higher than the precision (generally 0.1 DEG) reached by using a common detection method.

Description

technical field [0001] The invention belongs to the technical field of detection and measurement, and in particular relates to a method for measuring the orthogonal angle of a three-axis magnetic field coil. Background technique [0002] Three-axis magnetic field coils are widely used in the field of magnetic metrology, such as three-axis Helmertz coils, three-axis Rubens square coils, etc. As standard device components, three-axis magnetic field coils must have good orthogonality—that is, three-axis two-two vertical. [0003] At present, there are two most commonly used methods for measuring the orthogonal angle of the coil: one is to use a single-axis or three-axis magnetic sensor, which is installed in the magnetic field coil, and the measurement is completed by rotating the sensor to the axis; the other is to use a positive A three-axis magnetic sensor with a higher degree of intersection is used to measure the orthogonal angle of the three-axis magnetic field coil. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/02
Inventor 李伟卢俊杰车振
Owner CSIC NO 710 RES & DEV INST
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