Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Giant Magneto-Impedance Modeling Method of Amorphous Wire Under Non-axial Magnetic Field

An axial magnetic field and giant magneto-impedance technology, which is used in magnetic performance measurement, special data processing applications, design optimization/simulation, etc. Complex problems, to achieve the effect of low power consumption, high sensitivity, and improved detection accuracy

Active Publication Date: 2021-01-01
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complexity of the magnetization process of amorphous wires under a non-axial magnetic field, it is usually difficult to solve the magnetic moment equation, and it is almost impossible to obtain an analytical solution

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
  • Giant Magneto-Impedance Modeling Method of Amorphous Wire Under Non-axial Magnetic Field
  • Giant Magneto-Impedance Modeling Method of Amorphous Wire Under Non-axial Magnetic Field
  • Giant Magneto-Impedance Modeling Method of Amorphous Wire Under Non-axial Magnetic Field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0011] The present invention combines prior knowledge such as ergonomics and sports health measurement to propose a brand-new feature point marking method, and the marking result has higher accuracy. The number and position of feature points can be increased or decreased according to actual needs. The specific definition rules and calibration methods of the feature points of each part are as follows.

[0012] The material adopted in the method of the invention is a Co-based amorphous wire with a negative magnetostriction coefficient close to zero. The Co-based amorphous wire has a core-shell magnetic domain structure when no external magnetic field is applied, the inner core has axial anisotropy, and the outer shell has alternately reversed circumferential anisotropy.

[0013] The working principle of amorphous wire is as follows: figure 1 A...

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 provides a giant magneto-impedance modeling method of amorphous wire under the effect of a non-axial magnetic field. At first, by means of the LLG equation, a magnetization vector rotation equation is constrained and an expression of total energy inside amorphous wire is built; then, according to the principle of minimum free energy of system, a magnetization vector motion equation is built; amorphous wire magnetic conductivity tensor under the effect of a non-axial magnetic field is obtained through solving the motion equation; an electromagnetic field equation of the circumferential and axial magnetic field parameters of amorphous wire are established by using the intrinsic relationship between magnetic field strength and magnetic induction strength and Maxwell equation; finally, for the application conditions of high frequency and low frequency, the solution of the amorphous wire electromagnetic field equation is simplified; a general expression of amorphous wire giantmagneto-impedance by means of a high frequency and low frequency approximation. The giant magneto-impedance modeling of amorphous wire under effect of non-axial magnetic field can be accurately builtand the method for calculating giant magneto-impedance is given.

Description

technical field [0001] The invention belongs to the technical field of magnetic material sensing, and in particular relates to a giant magneto-impedance modeling method under the action of a non-axial magnetic field. Background technique [0002] Amorphous wire has high magnetic permeability, low coercive force, significant magneto-impedance effect and high sensitivity under low field. Compared with some existing semiconductor devices, magnetoresistance devices, and fluxgates, the magnetic field of amorphous wire The sensor combines the advantages of stability, high sensitivity, miniaturization and low power consumption. Amorphous wire sensors are widely used in industry, navigation, military, security, non-destructive testing, geomagnetism and biomedicine, such as high-density magnetic recording equipment, micro-magnetic equipment, military sensors, traffic monitoring, satellite aircraft detection, industrial equipment Amorphous wire sensors are used in control and geomagn...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G01R33/12
CPCG01R33/1223G06F30/20
Inventor 许洪光路小菲胡琴芳
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com