Unlock instant, AI-driven research and patent intelligence for your innovation.

Novel measurement method for magnetic field gradient parameters

A magnetic field gradient and parameter measurement technology, which is applied in the directions of magnetic gradient measurement, magnetic field measurement using electromagnetic devices, and magnetic field measurement using the principle of magnetic flux control, etc., can solve the problems of increased measurement cost and calculation difficulty, and achieve improved accuracy and reduced cost effect

Inactive Publication Date: 2014-08-20
BEIHANG UNIV
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in an increase in the cost of measurement, and the fusion of information between multiple magnetometers also makes calculations difficult

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Novel measurement method for magnetic field gradient parameters
  • Novel measurement method for magnetic field gradient parameters
  • Novel measurement method for magnetic field gradient parameters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] like figure 1 Shown, concrete method of the present invention is as follows:

[0028] (1) Calibrate the three-axis orthogonal three-axis magnetic sensor system installed on the aircraft, and use the parameters calculated by the calibration algorithm to compensate the measurement error and installation error of the magnetic sensor system and the hard magnetic interference caused by the magnetic material on the carrier And some soft magnetic interference. Suppose the measured magnitude of the three-axis component of the magnetic field in the carrier system . The current position is used as the reference point for calculating the magnetic field gradient parameters, and the current carrier coordinate system is used as the reference coordinate system, then the magnetic field size is .

[0029] (2) Select n points within 1 minute before the current time, and call these points as measurement points. The measurement point must meet the conditions: the displacement from t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a novel measurement method for magnetic field gradient parameters. The motion ability of a sensor system is fully utilized, time is exchanged for space, and a task which needs to be completed through at least ten uniaxial sensors can be completed by using only one three-axis sensor system. The novel measurement method can be used for various occasions where the magnetic field gradient parameters are needed, and a magnetic field sensor is not fixed. According to the novel measurement method, the measurement cost of the magnetic field gradient parameters is substantially lowered; meanwhile, the magnetic field measurement information of more spatial points can be obtained through the flexible movement of a carrier, it is not limited to magnetic field measurement information of a fixed point of a fixed position, and therefore the improvement on accuracy of the magnetic field gradient parameters is greatly facilitated.

Description

technical field [0001] The invention relates to a method for measuring magnetic field gradient parameters. The invention makes full use of the movement capability of the sensor system, trades time for space, and only needs one three-axis sensor system to complete tasks that require at least 10 single-axis sensors. It can be used in various occasions where magnetic field gradient parameters are required and the magnetic field sensor is not fixed. Background technique [0002] The three components of the magnetic field strength (H x ,H y ,H z ) in the three directions of space (x, y, z) constitute a tensor, that is, the magnetic field gradient tensor, which includes 9 elements in total, and is recorded as the magnetic field gradient tensor parameter matrix G: [0003] [0004] In the passive magnetic field space, the divergence and curl of the magnetic field intensity are 0, namely: [0005] ∂ H x ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01R33/022
Inventor 盛蔚蒋勇孙丁圣
Owner BEIHANG UNIV