A three-dimensional space vector magnetic measuring device and method

Abstract

The invention relates to a three-dimensional space vector magnetic measuring device and method, comprising a main support, three sets of iron core assemblies and a sample loading assembly. The iron core assembly comprises two half-iron cores arranged oppositely, windings arranged on the half-iron cores, and The iron core fixed piece fixed to the iron core and the driving part connected with the iron core fixed piece, the driving part can adjust the distance between the two half iron cores, the sample loading assembly includes the sample holder, the sample body and the shielding block, the half iron core pole and the sample A shielding block is arranged between the bodies, and a piezoelectric sensing sheet or a piezoelectric stress ceramic sheet is closely abutted between the shielding block and the sample body. The invention solves the problems of poor test reliability, low sample magnetization efficiency, and inability to simulate the actual working condition magnetization environment in the existing test method, and avoids the material utilization caused by the inaccurate magnetic material model. low rate and high energy consumption.

Description

technical field [0001] The invention relates to the technical field of magnetic material testing, in particular to a three-dimensional space vector magnetic measurement device and method. Background technique [0002] The magnetic properties of magnetic materials are divided into static magnetic properties and dynamic magnetic properties. The static magnetic properties are related to the composition and structure of the material. The commonly used measurement methods include the impact method and the flux meter method. The dynamic magnetic properties are related to the magnetization environment of the material (such as excitation waveform, temperature, stress, frequency, etc.), sample shape and processing technology. [0003] According to the boundary conditions of the magnetic field, when the distance between the sensing coil and the sample surface is infinitely close and the surface current is 0, the magnetic field satisfies the tangential flux continuity. By Gauss's the...

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Problems solved by technology

However, the induction coil is susceptible to extrusion deformation and poor stability in high-frequency environments

In addition, the distance between the induction H coil and the surface of the sample is limited by the existing technology, which is difficult to close to 0 and the consistency of each coil is poor. Limited by the sample test space, it is difficult to improve the sensitivity of the H sensor. The three-dimensional magnetic characteristic test device is single-axis (X-axis or Y-axis or Z-axis) Pole head position regulation stability and excitation efficiency are limited Sample magnetization environment

In addition, for the magnetization environment of actual working conditions, the existing technology cannot simulate the three-dimensional dynamic magnetic properties of the sample under stress

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