CN102156268A - Device for measuring rotating magnetization characteristic of magnetic material - Google Patents
Device for measuring rotating magnetization characteristic of magnetic material Download PDFInfo
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- CN102156268A CN102156268A CN2011100531261A CN201110053126A CN102156268A CN 102156268 A CN102156268 A CN 102156268A CN 2011100531261 A CN2011100531261 A CN 2011100531261A CN 201110053126 A CN201110053126 A CN 201110053126A CN 102156268 A CN102156268 A CN 102156268A
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Abstract
The invention discloses a device for measuring the rotating magnetization characteristic of a magnetic material. The device comprises a test sample, a measurement and control module, and a rotating magnetization mechanism which is used for generating a rotating magnetic field, wherein the test sample is positioned in the rotating magnetic field; the measurement and control module comprises a measurement element and a computer processing unit; the measurement element is arranged in a central area of the test sample; and the computer processing unit carries out processing analysis on magnetic field intensity data and magnetic induction intensity data which are measured by the measurement element to acquire the rotating magnetization characteristic of the test sample. The device for measuring the rotating magnetization characteristic of the magnetic material can accurately measure the rotating magnetization characteristic of the magnetic material automatically, and can further guide optimization design of other pieces of electric equipment such as a motor.
Description
Technical field
The present invention relates to the magnetic material fields of measurement, relate in particular to a kind of magnetic material rotary magnetization characteristic measuring device.
Background technology
The selection of motor material is a key factor of design of electrical motor, if it is improper that material is selected, possibly motor properties is produced very big influence, and the foundation that material is selected is magnetic conduction and the iron loss characteristic that electromagnetic material shows under alternation and rotary magnetization.Different with alternating magnetization, during rotary magnetization, the amplitude of magnetizing field and direction are along with the time changes.This rotary magnetization is present in the polyphase transformer that the yoke portion of electric rotating machine and T shape connect, and presents and alternating magnetization different external characteristic fully.
Yet existing magnetic material measuring method and device only are at the performance of magnetic material under the alternating magnetization condition usually, such as employing epstein frame method and annular exemplar method etc., and for rotary magnetization, do not have the measuring method of a standard.Before not fully realizing its Physical Mechanism, be necessary the external characteristic of magnetic material under the rotary magnetization condition studied, so that some is in the rotary magnetization optimal design and the analysis of electromagnetic equipment after the match.Therefore, demand urgently providing a kind of improved magnetic material rotary magnetization characteristic measuring device to overcome above-mentioned defective.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of magnetic material rotary magnetization characteristic measuring device of rotary magnetization characteristic that can automatic accurate measurement electromagnetic material.
In order to solve the problems of the technologies described above, the invention provides a kind of magnetic material rotary magnetization characteristic measuring device, the rotary magnetization mechanism that it comprises test sample, measurement and control module and is used to produce rotating magnetic field, described test sample is arranged in described rotating magnetic field, and magnetic field intensity that described measurement and control module comprise the measuring sensor that is arranged on the described test sample, record described measuring sensor and magnetic induction density data are carried out the computer processing unit of Treatment Analysis with the rotary magnetization characteristic of obtaining described test sample.
Magnetic material rotary magnetization characteristic measuring device of the present invention forms rotating magnetic field by rotary magnetization mechanism, measure the magnetic field intensity and the magnetic induction density of the test sample in the rotating magnetic field then by measuring sensor, magnetic field intensity that the computer processing unit basis records and magnetic induction density data computation obtain magnetic hysteresis and the iron loss performance data under the rotary magnetization, and then can instruct the optimal design of other electrical equipments such as motor.This magnetic material rotary magnetization characteristic measuring device is simple in structure, measurement is convenient, be easy to realization.
The present invention's technical scheme preferably is: described rotating magnetic field is for circular or oval, and described measuring sensor is arranged on the central area of described test sample, with the consistance of assurance measurement zone magnetic direction and the homogeneity of the close distribution of magnetic.Described rotary magnetization device comprises two orthogonal field windings, be used for to described field winding power supply with the supply module of the magnetic flux density waveforms of controlling described field winding and the yoke of being located at described field winding periphery, described test sample is positioned at the center of described field winding and vertical with described field winding, thereby form orthogonal sinusoidal exciting field on two surface levels by the magnetic flux density waveforms of controlling described field winding for sine, just can obtain circular or oval-shaped rotating magnetic field by phase place and the amplitude of controlling exciting field.Preferably there is air gap between described yoke and the described field winding, so that the control magnetic flux density waveforms is avoided effect of nonlinear.
Optimized technical scheme of the present invention is: described supply module comprises power amplifier, the voltage that magnetic field intensity that described computer processing unit basis records and the described power amplifier of magnetic induction density Data Control offer described field winding, that is to say, further control the magnetic flux density waveforms that field winding produces by feedback data.
The preferred technical scheme of the present invention is: described measuring sensor is an inductive coil, and the central area of described test sample offers the hole that is used to install described inductive coil, adopts the inductive coil measurement to be convenient to install.Further, described inductive coil is preferably the coil that evenly is wound with annulus, adopts this coil to measure magnetic field intensity precision height.Described measuring sensor also can be hall probe.Described field winding comprises the many enameled wires that detour side by side.
By following description also in conjunction with the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 is the structural representation of an embodiment of magnetic material rotary magnetization characteristic measuring device of the present invention.
Fig. 2 is the structural representation of the rotary magnetization mechanism of magnetic material rotary magnetization characteristic measuring device shown in Figure 1.
Fig. 3 is the structure for amplifying synoptic diagram of the test sample in the rotary magnetization shown in Figure 2 mechanism.
Fig. 4 is for being provided with the structural representation behind the measuring sensor on the test sample shown in Figure 3.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above, the invention provides a kind of magnetic material rotary magnetization characteristic measuring device of rotary magnetization characteristic that can automatic accurate measurement electromagnetic material.
Elaborate the technical scheme of the embodiment of the invention below in conjunction with accompanying drawing.As depicted in figs. 1 and 2, the magnetic material rotary magnetization characteristic measuring device of present embodiment comprises test sample 1, measurement and control module 2 and the rotary magnetization mechanism 3 that is used to produce rotating magnetic field, described test sample 1 is arranged in described rotating magnetic field, the magnetic field intensity (H that described measurement and control module 2 comprise the measuring sensor of being located at described test sample central area, described measuring sensor is recorded
x, H
y) and magnetic induction density (B
x, B
y) data carry out the computer processing unit 21 of Treatment Analysis with the rotary magnetization characteristic of obtaining described test sample 1.Obviously, the magnetic field intensity (H that records of described measuring sensor
x, H
y) and magnetic induction density (B
x, B
y) carry out sending to computer processing unit 21 after the analog to digital conversion through A/D transition card 22 and carry out Treatment Analysis, this knows for those skilled in the art, omits detailed description at this.
Particularly, the described rotary magnetization device of present embodiment comprises two orthogonal field windings 32 (the parallel plane field winding 32a of the direction that detours and XZ and detour direction and the parallel plane field winding 32b of YZ), be used for powering with the supply module 31 of the magnetic flux density waveforms of controlling described field winding 32 and the yoke 33 of being located at described field winding 32 peripheries to described field winding 32, described test sample 1 is positioned at the center of described field winding 32 and vertical with described field winding 32, promptly is positioned at the XY plane.The magnetic flux density waveforms of controlling described field winding 32 promptly can form orthogonal sinusoidal exciting field on two surface levels.Particularly, phase place and amplitude by the control exciting field, is 90 degree such as the magnetic flux density waveforms of the described field winding 32 of control for the close phase differential of magnetic of the field winding 32b correspondence of the field winding 32a of sinusoidal, directions X and Y direction, just can obtain circle or oval-shaped rotating magnetic field.Preferably there is air gap 34 between described yoke 33 and the described field winding 32, so that the control magnetic flux density waveforms is avoided effect of nonlinear.
As the preferred embodiments of the present invention, as shown in Figure 1, described supply module 31 comprises power amplifier, the voltage that magnetic field intensity that described computer processing unit 22 bases record and the described power amplifier of magnetic induction density Data Control offer described field winding 32, that is to say, further control the magnetic flux density waveforms that field winding 32 produces by feedback data, thus the rotating magnetic field that control produces.Obviously, the control signal of described computer processing unit 22 need send to described power amplifier after 23 conversions of D/A transition card, and this knows for those skilled in the art, omits at this and describes in detail.
Described measuring sensor is an inductive coil 24, and the central area of described test sample 1 offers the hole 1a that is used to install described inductive coil 24, adopts the inductive coil measurement to be convenient to install.Further, evenly be wound with annulus 24a (being also referred to as H-coil) on the described inductive coil 24, adopt this inductive coil to measure magnetic field intensity precision height.Described measuring sensor also can be hall probe.Described field winding 32 comprises the many enameled wires that detour side by side.Described yoke 33 is made by high permeability material.
The following describes the course of work of the magnetic material rotary magnetization characteristic measuring device of present embodiment.As shown in Figure 1, supply module 31 is 3 power supplies of described rotary magnetization mechanism, to produce circular or oval-shaped rotating magnetic field, computer processing unit 22 obtains the magnetic induction density and the magnetic density data of test sample 1 central area by measuring sensor, and obtain magnetic hysteresis and iron loss performance data under the rotary magnetization according to the data computation that obtains, and then can instruct the optimal design of other electrical equipments such as motor, simultaneously, computer processing unit 22 also according to survey the output of Data Control supply module 31, and then control rotary magnetization mechanism 3 produces different frequency, difform rotating magnetic field is measured the rotary magnetization performance of described magnetic material comprehensively.It is accurate and stable that this measurement mechanism is measured.
Claims (10)
1. magnetic material rotary magnetization characteristic measuring device, comprise test sample, measurement and control module, it is characterized in that, also comprise the rotary magnetization mechanism that is used to produce rotating magnetic field, described test sample is arranged in described rotating magnetic field, and magnetic field intensity that described measurement and control module comprise the measuring sensor that is arranged on the described test sample, record described measuring sensor and magnetic induction density data are carried out the computer processing unit of Treatment Analysis with the rotary magnetization characteristic of obtaining described test sample.
2. magnetic material rotary magnetization characteristic measuring device according to claim 1, it is characterized in that: described rotary magnetization mechanism comprises two orthogonal field windings, be used for to described field winding power supply with the supply module of the magnetic flux density waveforms of controlling described field winding and the yoke of being located at described field winding periphery, and described test sample is positioned at the center of described field winding and vertical with described field winding.
3. magnetic material rotary magnetization characteristic measuring device according to claim 2, it is characterized in that: described supply module comprises power amplifier, the voltage that magnetic field intensity that described computer processing unit basis records and the described power amplifier of magnetic induction density Data Control offer described field winding.
4. magnetic material rotary magnetization characteristic measuring device according to claim 3 is characterized in that: described rotating magnetic field is for circular or oval.
5. magnetic material rotary magnetization characteristic measuring device according to claim 4 is characterized in that: have air gap between described yoke and the described field winding.
6. according to each described magnetic material rotary magnetization characteristic measuring device of claim 1-5, it is characterized in that: described measuring sensor is arranged on the central area of described test sample.
7. magnetic material rotary magnetization characteristic measuring device according to claim 6 is characterized in that: described measuring sensor is an inductive coil, and the central area of described test sample offers the hole that is used to install described inductive coil.
8. magnetic material rotary magnetization characteristic measuring device according to claim 7 is characterized in that: described inductive coil is for evenly being wound with the coil of annulus.
9. magnetic material rotary magnetization characteristic measuring device according to claim 6 is characterized in that: described measuring sensor is a hall probe.
10. according to each described magnetic material rotary magnetization characteristic measuring device of claim 1-5, it is characterized in that: described field winding comprises the many enameled wires that detour side by side.
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| CN2011100531261A CN102156268A (en) | 2011-03-07 | 2011-03-07 | Device for measuring rotating magnetization characteristic of magnetic material |
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| CN2011100531261A CN102156268A (en) | 2011-03-07 | 2011-03-07 | Device for measuring rotating magnetization characteristic of magnetic material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777157A (en) * | 2014-01-15 | 2014-05-07 | 华中科技大学 | Testing system and testing method for perpendicular magnetic anisotropic magnetic tunnel junction unit |
| CN103901367A (en) * | 2014-03-28 | 2014-07-02 | 浙江省计量科学研究院 | Device for measuring magnetic property of magnetic material based on embedded measuring coils |
| CN105842639A (en) * | 2016-06-14 | 2016-08-10 | 东南大学 | Measuring device for magnetic characteristics of magnetic conductive material |
| CN106125021A (en) * | 2016-06-14 | 2016-11-16 | 东南大学 | The measuring method of permeability magnetic material characteristic under a kind of quadrature bias magnetic field |
| CN106842083A (en) * | 2017-02-28 | 2017-06-13 | 河北工业大学 | Wideband rotary magnetic characteristic measuring system and measuring method based on flexible magnetizing coil |
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Patent Citations (5)
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| JPS6432184A (en) * | 1987-07-28 | 1989-02-02 | Yokogawa Electric Corp | Continuous core loss measuring instrument |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777157A (en) * | 2014-01-15 | 2014-05-07 | 华中科技大学 | Testing system and testing method for perpendicular magnetic anisotropic magnetic tunnel junction unit |
| CN103901367A (en) * | 2014-03-28 | 2014-07-02 | 浙江省计量科学研究院 | Device for measuring magnetic property of magnetic material based on embedded measuring coils |
| CN105842639A (en) * | 2016-06-14 | 2016-08-10 | 东南大学 | Measuring device for magnetic characteristics of magnetic conductive material |
| CN106125021A (en) * | 2016-06-14 | 2016-11-16 | 东南大学 | The measuring method of permeability magnetic material characteristic under a kind of quadrature bias magnetic field |
| CN105842639B (en) * | 2016-06-14 | 2018-07-20 | 东南大学 | A kind of measuring device of permeability magnetic material magnetic characteristic |
| CN106125021B (en) * | 2016-06-14 | 2018-10-30 | 东南大学 | The measurement method of permeability magnetic material characteristic under a kind of quadrature bias magnetic field |
| CN106842083A (en) * | 2017-02-28 | 2017-06-13 | 河北工业大学 | Wideband rotary magnetic characteristic measuring system and measuring method based on flexible magnetizing coil |
| CN106842083B (en) * | 2017-02-28 | 2019-03-26 | 河北工业大学 | Wideband rotary magnetic characteristic measuring system and measurement method based on flexible magnetizing coil |
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Application publication date: 20110817 |