CN205507054U - Basic [magnetic] hysteresis loop measuring device of magnetically soft material - Google Patents
Basic [magnetic] hysteresis loop measuring device of magnetically soft material Download PDFInfo
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- CN205507054U CN205507054U CN201620286407.XU CN201620286407U CN205507054U CN 205507054 U CN205507054 U CN 205507054U CN 201620286407 U CN201620286407 U CN 201620286407U CN 205507054 U CN205507054 U CN 205507054U
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Abstract
The utility model provides a basic [magnetic] hysteresis loop measuring device of magnetically soft material. Basic [magnetic] hysteresis loop measuring device of magnetically soft material includes computer, DA converter, excitation current generator, integrator and AD converter, the computer respectively with the DA converter reaches the AD converter is connected, the DA converter with the excitation current generator is connected, the AD converter with the integrator is connected, the excitation current generator is including detecting the interface, the integrator includes the testing result receiving port, the detection interface reaches the testing result receiving port all can be surveyed the sample with the quilt and be connected. The utility model discloses a basic [magnetic] hysteresis loop measuring device of magnetically soft material carries out the [magnetic] hysteresis loop detection through taking place measuring current, and passes through the computer obtains the basic [magnetic] hysteresis loop's of magnetically soft material detection parameter.
Description
Technical field
This utility model relates to magnetic material measurement apparatus field, particularly to a kind of soft magnetic materials basic hysteresis measurement device.
Background technology
Magnetic material is after World War II scientific and technological progress and socio-economic development to be only second to quasiconductor, the functional material most contributed.Soft magnetic materials is the important component part of magnetic material industry.Soft magnetic materials magnetic parameter and measurement thereof are to ensure that its product made (mainly electronic product) quality, direct study the key with Development of Novel material.
The most basic parameter of magnetic parameter is all defined on hysteresis curve.So common Magnetic Measurement is exactly the mapping of hysteresis curve.At present, this mapping generally uses field scan method, upper two coils of coiling of sample (typically one loop sample), one of them is passed through exciting current and produces scanning magnetic field H (t), it is referred to as magnet exciting coil, another collects the induced voltage that sample flux change causes, it is referred to as measuring coil, its induced voltage obtains corresponding magnetic induction receptance function B (t) by integral operation, the relation function of B (t) and H (t) is hysteresis curve, and the magnetic parameter of sample is all defined on hysteresis curve.Due to sample, in magnetic history, eddy current is to magnetized effect, and measuring the hysteresis curve arrived is affected by magnetic frequency and field waveform (harmonic wave), and produces distortion.So that measurement result loses uniqueness, uniqueness is magnetic material measurement result comparability and the basis of accuracy.So, although this method is the most generally, very simply, but the most worthless.
Utility model content
Being easily generated distortion, the inaccurate technical problem of testing result to solve the detection of existing soft magnetic materials basic hysteresis curve detection method, this utility model provides one to be not likely to produce distortion, testing result soft magnetic materials accurately basic hysteresis measurement device.
The soft magnetic materials basic hysteresis measurement device that this utility model provides includes microcomputer, D/A changer, exciting current generator, integrator and A/D changer, described microcomputer is connected with described D/A changer and described A/D changer respectively, described D/A changer is connected with described exciting current generator, described A/D changer is connected with described integrator, described exciting current generator includes detecting interface, described integrator includes that testing result receiving port, described detection interface and described testing result receiving port all can be connected with sample.
In a kind of preferred embodiment of the soft magnetic materials basic hysteresis measurement device of this utility model offer, described integrator is proportional integral amplifier or analogue integrator.
In a kind of preferred embodiment of the soft magnetic materials basic hysteresis measurement device of this utility model offer, described exciting current generator is the current feedback circuit that certain amplitude and definite shape can occur.
In a kind of preferred embodiment of the soft magnetic materials basic hysteresis measurement device of this utility model offer, described integrator is the integrator amplifying induced voltage with the integrated value of time.
In a kind of preferred embodiment of the soft magnetic materials basic hysteresis measurement device of this utility model offer, described microcomputer can be processed by data and obtain various magnetic parameters, including remanent magnetism Br value, coercivity H value and energy of magnetization Eh value.
In a kind of preferred embodiment of the soft magnetic materials basic hysteresis measurement device of this utility model offer, described integrator and described A/D changer can directly obtain the magnetic parameter of magnetic flux change amount Δ B.
Relative to prior art, soft magnetic materials of the present utility model basic hysteresis measurement device has a following beneficial effect:
Centered by described microcomputer, according to ballistic method Magnetic Measurement principle, excitation function Δ H (t) is produced by exciting current generator described in described D/A convertor controls, act on sample, its receptance function dB/dt is by described amplifier and described A/D converter sample, realized numerical integration by the software function of described microcomputer and obtain Δ B, can also be directly obtained by a described integrator and described A/D, meeting ballistic method measuring condition, the starting and ending moment dH/dt=0 of i.e. Δ H, dB/dt=0, on a hysteresis curve set, one direction through n times circulates, the N number of measurement result obtained, the hysteresis curve obtained is processed by data, it it is exactly the basic hysteresis curve of this utility model definition.Device can obtain and be defined on the various magnetic parameter of basic hysteresis curve, including energy of magnetization Eh that Br, Hc are corresponding with loop line area.The summit connecting multiple basic hysteresis curve race can also obtain the fundamental magnetization curve of material, and the various magnetic parameters being defined on this curve.This utility model is also particularly in the key parameter kE obtaining this soft magnetic materials alternating magnetism on the basis of basic area of hysteresis loop, i.e. energy of magnetization Eh.Device has self study, adaptation function, it is ensured that the optimized advantage of the uniqueness of measurement result, accuracy and measurement process.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, in describing embodiment below, the required accompanying drawing used is briefly described, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of soft magnetic materials basic hysteresis measurement device one preferred embodiment that this utility model provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present utility model rather than whole embodiments.Based on the embodiment in this utility model, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to Fig. 1, be the structural representation of soft magnetic materials basic hysteresis measurement device 100 1 preferred embodiment that this utility model provides.
Described soft magnetic materials basic hysteresis measurement device 1 includes microcomputer 11, D/A changer 12, exciting current generator 13, integrator 14 and A/D changer 15.Described microcomputer 11 is connected with described D/A changer 12 and described A/D changer 13 respectively, and described D/A changer 12 is connected with described exciting current generator 13, and described A/D changer 15 is connected with described integrator 14.
Described exciting current generator 13 is the current feedback circuit that certain amplitude and definite shape can occur.Described exciting current generator 13 includes detecting interface 131.Described integrator 14 is proportional integral amplifier or analogue integrator, for amplifying the integrator of induced voltage and the integrated value of time.
Described integrator 14 includes that testing result receiving port 141, described detection interface 131 and described testing result receiving port 141 all can be connected with sample.
Described microcomputer 11 can be processed by data and obtain various magnetic parameters, including remanent magnetism Br value, coercivity H value and energy of magnetization Eh value.
Described integrator 14 and described A/D changer 15 can directly obtain the magnetic parameter of magnetic flux change amount Δ B.
Soft magnetic materials of the present utility model basic hysteresis measurement device 1 has a following beneficial effect:
nullCentered by described microcomputer 11，According to ballistic method Magnetic Measurement principle，Control described exciting current generator 13 by described D/A changer 12 and produce excitation function Δ H (t)，Act on sample，Its receptance function dB/dt is sampled by described integrator 14 and described A/D changer 15，Realized numerical integration by the software function of described microcomputer 11 and obtain Δ B，Can also be directly obtained by a described integrator 14 and described A/D changer 15，Meeting ballistic method measuring condition，The starting and ending moment dH/dt=0 of i.e. Δ H，DB/dt=0，On a hysteresis curve set，One direction through n times circulates，The N number of measurement result obtained，The hysteresis curve obtained is processed by data，It it is exactly the basic hysteresis curve of this utility model definition.Device can obtain and be defined on the various magnetic parameter of basic hysteresis curve, including energy of magnetization Eh that Br, Hc are corresponding with loop line area.The summit connecting multiple basic hysteresis curve race can also obtain the fundamental magnetization curve of material, and the various magnetic parameters being defined on this curve.This utility model is also particularly in the key parameter kE obtaining this soft magnetic materials alternating magnetism on the basis of basic area of hysteresis loop, i.e. energy of magnetization Eh.Device has self study, adaptation function, it is ensured that the optimized advantage of the uniqueness of measurement result, accuracy and measurement process.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical field, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (6)
1. a soft magnetic materials basic hysteresis measurement device, it is characterized in that, including microcomputer, D/A changer, exciting current generator, integrator and A/D changer, described microcomputer is connected with described D/A changer and described A/D changer respectively, described D/A changer is connected with described exciting current generator, described A/D changer is connected with described integrator, described exciting current generator includes detecting interface, described integrator includes that testing result receiving port, described detection interface and described testing result receiving port all can be connected with sample.
Soft magnetic materials the most according to claim 1 basic hysteresis measurement device, it is characterised in that described integrator is proportional integral amplifier or analogue integrator.
Soft magnetic materials the most according to claim 1 basic hysteresis measurement device, it is characterised in that described exciting current generator is the current feedback circuit that certain amplitude and definite shape can occur.
Soft magnetic materials the most according to claim 1 basic hysteresis measurement device, it is characterised in that described integrator is the integrator amplifying induced voltage with the integrated value of time.
Soft magnetic materials the most according to claim 1 basic hysteresis measurement device, it is characterised in that described microcomputer can be processed by data and obtain various magnetic parameters, including remanent magnetism Br value, coercivity H value and energy of magnetization Eh value.
Soft magnetic materials the most according to claim 1 basic hysteresis measurement device, it is characterised in that described integrator and described A/D changer can directly obtain the magnetic parameter of magnetic flux change amount Δ B.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620286407.XU CN205507054U (en) | 2016-04-07 | 2016-04-07 | Basic [magnetic] hysteresis loop measuring device of magnetically soft material |
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| CN201620286407.XU CN205507054U (en) | 2016-04-07 | 2016-04-07 | Basic [magnetic] hysteresis loop measuring device of magnetically soft material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891747A (en) * | 2016-04-07 | 2016-08-24 | 湖南省永逸科技有限公司 | Soft magnetic material basic hysteresis loop measurement device and measurement method thereof |
| CN110296720A (en) * | 2018-03-22 | 2019-10-01 | Tdk株式会社 | Magnetic sensing device |
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2016
- 2016-04-07 CN CN201620286407.XU patent/CN205507054U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891747A (en) * | 2016-04-07 | 2016-08-24 | 湖南省永逸科技有限公司 | Soft magnetic material basic hysteresis loop measurement device and measurement method thereof |
| CN105891747B (en) * | 2016-04-07 | 2019-04-09 | 湖南省永逸科技有限公司 | Utilize the method for the measuring device measurement basic hysteresis loop of soft magnetic materials |
| CN110296720A (en) * | 2018-03-22 | 2019-10-01 | Tdk株式会社 | Magnetic sensing device |
| CN110296720B (en) * | 2018-03-22 | 2021-11-12 | Tdk株式会社 | Magnetic sensor device |
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