CN102411130B - Device and method for measuring magnetic declination of permanent magnet - Google Patents
Device and method for measuring magnetic declination of permanent magnet Download PDFInfo
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- CN102411130B CN102411130B CN2011104084854A CN201110408485A CN102411130B CN 102411130 B CN102411130 B CN 102411130B CN 2011104084854 A CN2011104084854 A CN 2011104084854A CN 201110408485 A CN201110408485 A CN 201110408485A CN 102411130 B CN102411130 B CN 102411130B
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Abstract
The invention relates to the field of anisotropic permanent magnet measurement, and discloses a device for measuring magnetic declination of a permanent magnet. The device consists of a loading platform (2), a displacement platform (3), a multidimensional electric control device (4), an induced voltage generation unit (5), an induced voltage detection and processing unit (6) and a computer control and processing unit (7). The device provided by the invention can be used for measuring the magnetic declinations of various shapes of the permanent magnets with single easy magnetization direction; and by adopting the device, the measuring method is simplified, and the measuring efficiency is improved.
Description
Technical field
The present invention relates to anisotropy permanent magnet fields of measurement, relate in particular to a kind of permanent magnet magnetic measurement of angle device and method.
Background technology
Anisotropic permanent-magnetic material is in the magnetic field orientating forming process, and product direction of orientation and alignment magnetic field direction are not parallel and produce magnetic declination; Or in product processing, centering not during the clamping product produces magnetic declination and make between product geometirc symmetry axis and product magnetic axis.The permanent magnet magnetic drift angle exists makes magnet unmagnetized direction produce magnetic field, forms stray magnetic field.At present domesticly measure patent about magnetic declination and have limitation, the CN101382586A patent of invention is about ring axial charging permanent magnet degree of orientation measurement mechanism and measuring method, and CN101833074A also is about ring axial charging permanent magnet magnetization vector direction deflection angle measurement mechanism and measuring method.But do not have a kind ofly to measure different shape, direction of easy axis is proving installation and the measuring method of the magnetized permanent magnet magnetic of single direction drift angle.
Summary of the invention
In order to solve the problems of the prior art, the invention provides a kind of permanent magnet magnetic measurement of angle device and method, solution must not be measured different shape, direction of easy axis is the problem of the magnetized permanent magnet magnetic of single direction drift angle.
The invention provides a kind of permanent magnet magnetic measurement of angle device, formed by objective table, displacement platform, multidimensional electric control gear, induced voltage generation unit, induced voltage detection and processing unit and computer control and processing unit; Described objective table is used for placing and fixed sample; Described displacement platform is used for regulating objective table; The rotation of described multidimensional electric control gear control displacement platform is or/and displacement; Described induced voltage generation unit is used for obtaining the induced voltage signal that testing sample produces; Described induced voltage detection and processing unit are for detection of converting the magnetic flux data to the processing induced voltage signal and with induced voltage signal; Described computer control and processing unit are used for control multidimensional electric control gear makes the rotation of displacement platform or displacement, converts the signal that induced voltage detects and processing unit is carried to flux value, and record and storage magnetic flux data are calculated the permanent magnet magnetic drift angle.
As a further improvement on the present invention, described objective table is column structure; Described objective table comprises cylindricality stage body, fixed block and cavity; Described objective table is nonmagnetic substance.
As a further improvement on the present invention, described displacement platform is regulated the middle section that objective table is positioned at the induced voltage generation unit; Described displacement platform comprises Z axle, X-axis, turning axle, locating piece and has the pedestal of locating slot; The described pedestal that has locating slot is made by nonmagnetic substance.
As a further improvement on the present invention, described multidimensional electric control gear control displacement platform rotation or displacement guarantee the dead in line of sample test direction and induced voltage generation unit, guarantee that sample is positioned at induced voltage generation unit central authorities homogeneous area; Described multidimensional electric control gear comprises Rotation Controllers, Z axle driving governor, X-axis driving governor, and described Rotation Controllers, Z axle driving governor, X-axis driving governor are controlled the displacement platform respectively and be rotated, vertically move and move horizontally.
As a further improvement on the present invention, described induced voltage generation unit is Helmholtz coils.
As a further improvement on the present invention, described induced voltage detects and processing unit comprises digital voltage integrator and signal amplifier, described digital voltage integrator input end is connected with the output terminal of described induced voltage generation unit, is used for receiving induced voltage and the time signal of this induced voltage generation unit; Described signal amplifier input end is connected with the output terminal of above-mentioned digital voltage integrator, signal is amplified the back be connected with processing unit with computer control by its output terminal.
As a further improvement on the present invention, described induced voltage detects and processing unit is digital fluxmeter, and described digital fluxmeter input end is connected its output terminal and computer control and processing unit with the output terminal of described induced voltage generation unit.
The present invention provides a kind of permanent magnet magnetic measurement of angle method simultaneously, comprises the steps: objective table placement and fixing test sample; (102) objective table and displacement platform are regulated, controlled to the multidimensional electric control gear; (103) induced voltage detection and processing unit are gathered the voltage signal amplification and are delivered to computer control and processing unit; (104) computer control and processing unit calculate the magnet magnetic declination.
As a further improvement on the present invention, described step specifically comprises the steps in (102), (1021) specimen direction of magnetization A to induced voltage generation unit dead in line or parallel, the X-axis of multidimensional electric control gear control displacement platform makes objective table Rotate 180 °, and the induced voltage generation unit produces induced voltage signal V
1(1022) X-axis of multidimensional electric control gear control displacement platform makes the objective table half-twist, makes sample B to forwarding A to, repeating step (1021), and the induced voltage generation unit produces induced voltage signal V
2(1023) multidimensional electric control gear control objective table is around the turning axle half-twist, make sample C to forward to B to, and the displacement of control Z axle horizontal, make sample be positioned at induced voltage generation unit middle section, repeating step (1022) (1021) induced voltage generation unit produces induced voltage signal V
3In the described step (104), computer control and processing unit send instruction to the multidimensional electric control gear, the rotation of control objective table and the displacement of displacement platform; Receive the signal that induced voltage detects and processing unit is carried, and convert corresponding flux value to, calculate the magnet magnetic declination.
As a further improvement on the present invention, described induced voltage generation unit is Helmholtz coils; Described objective table is column structure; Described objective table comprises cylindricality stage body, fixed block and cavity; Described objective table is nonmagnetic substance; Described multidimensional electric control gear control displacement platform rotation or displacement guarantee the dead in line of sample test direction and induced voltage generation unit, guarantee that sample is positioned at induced voltage generation unit central authorities homogeneous area; Described multidimensional electric control gear comprises Rotation Controllers, Z axle driving governor, X-axis driving governor, and institute's Rotation Controllers, Z axle driving governor, X-axis driving governor are controlled the displacement platform respectively and be rotated, vertically move and move horizontally.
The invention has the beneficial effects as follows: the invention provides and a kind ofly can measure different shape, direction of easy axis is the magnetic declination of the magnetized permanent magnet of single direction, thereby simplified measuring method, improved measurement efficient.
[description of drawings]
Fig. 1 is the device synoptic diagram of an embodiment of permanent magnet magnetic measurement of angle device of the present invention;
Fig. 2 sample orientation synoptic diagram;
Fig. 3 is another embodiment device synoptic diagram of permanent magnet magnetic measurement of angle device of the present invention.
[embodiment]
The present invention is further described below in conjunction with description of drawings and embodiment.
A kind of permanent magnet magnetic measurement of angle device is detected and processing unit 6 and computer control and processing unit 7 are formed by objective table 2, displacement platform 3, multidimensional electric control gear 4, induced voltage generation unit 5, induced voltage; Described objective table 2 is used for placing and fixed sample; Described displacement platform 3 is used for regulating objective table 2; 2 rotations of described multidimensional electric control gear 4 control displacement platforms are or/and displacement; Described induced voltage generation unit 5 is used for obtaining the induced voltage signal that testing sample produces; Described induced voltage detection and processing unit 6 are for detection of converting the magnetic flux data to the processing induced voltage signal and with induced voltage signal; Described computer control and processing unit 7 is used for control multidimensional electric control gear 4 makes 3 rotation or the displacements of displacement platform, induced voltage is detected and signal that processing unit 6 is carried converts flux value to, record and storage magnetic flux data, calculating permanent magnet magnetic drift angle.
Described objective table 2 is column structure; Described objective table 2 comprises cylindricality stage body 21, fixed block 22 and cavity 23; Described objective table 2 is nonmagnetic substance, and one of preferred version is copper.
Described displacement platform 3 is regulated the middle section that objective table 2 is positioned at induced voltage generation unit 5; Described displacement platform 3 comprises Z axle 31, X-axis 32, turning axle 33, locating piece 34 and has the pedestal 35 of locating slot; The described pedestal that has a locating slot 35 is made by nonmagnetic substance, and one of preferred version is copper.
2 rotation or the displacements of described multidimensional electric control gear 4 control displacement platforms guarantee the dead in line of sample test direction and induced voltage generation unit 5, guarantee that sample is positioned at induced voltage generation unit 5 central homogeneous areas; Described multidimensional electric control gear 4 comprises Rotation Controllers (41), Z axle driving governor (42), X-axis driving governor (43), and described Rotation Controllers (41), Z axle driving governor (42), X-axis driving governor (43) are controlled displacement platform 3 respectively and be rotated, vertically move and move horizontally.
Described induced voltage generation unit 5 is Helmholtz coils.
Described induced voltage detects and processing unit 6 comprises digital voltage integrator 61 and signal amplifier 62, described digital voltage integrator 61 input ends are connected with the output terminal of described induced voltage generation unit 5, are used for receiving induced voltage and the time signal of this induced voltage generation unit 5; Described signal amplifier 62 input ends and above-mentioned digital voltage integrator 61) output terminal be connected, signal is amplified the back is connected with processing unit 7 with computer control by its output terminal.
Described induced voltage detects and processing unit 6 is digital fluxmeter, described digital fluxmeter input end and described induced voltage generation unit 5) output terminal be connected its output terminal and computer control and processing unit 7.
A kind of permanent magnet magnetic measurement of angle method comprises the steps: the placement of 101 objective tables and fixing test sample; Objective table and displacement platform are regulated, controlled to 102 multidimensional electric control gears; 103 induced voltages detect and processing unit is gathered the voltage signal amplification and be delivered to computer control and processing unit; 104 computer control and processing unit 7 calculate the magnet magnetic declination.
Specifically comprise the steps in the described step 102, (1021) specimen direction of magnetization A to induced voltage generation unit dead in line or parallel, the X-axis of multidimensional electric control gear control displacement platform makes objective table Rotate 180 °, and the induced voltage generation unit produces induced voltage signal V
1(1022) X-axis of multidimensional electric control gear control displacement platform makes the objective table half-twist, makes sample B to forwarding A to, repeating step (1021), and the induced voltage generation unit produces induced voltage signal V
2(1023) multidimensional electric control gear control objective table is around the turning axle half-twist, make sample C to forward to B to, and the displacement of control Z axle horizontal, make sample be positioned at induced voltage generation unit middle section, repeating step (1022) (1021) induced voltage generation unit produces induced voltage signal V
3In the described step (104), computer control and processing unit send instruction to the multidimensional electric control gear, the rotation of control objective table and the displacement of displacement platform; Receive the signal that induced voltage detects and processing unit is carried, and convert corresponding flux value to, calculate the magnet magnetic declination.
Described induced voltage generation unit is Helmholtz coils; Described objective table 2 is column structure; Described objective table 2 comprises cylindricality stage body 21, fixed block 22 and cavity 23; Described objective table 2 is nonmagnetic substance; 2 rotation or the displacements of described multidimensional electric control gear 4 control displacement platforms guarantee the dead in line of sample test direction and induced voltage generation unit 5, guarantee that sample is positioned at induced voltage generation unit 5 central homogeneous areas; Described multidimensional electric control gear 4 comprises Rotation Controllers (41), Z axle driving governor (42), X-axis driving governor (43), and described Rotation Controllers (41), Z axle driving governor (42), X-axis driving governor (43) are controlled displacement platform 3 respectively and be rotated, vertically move and move horizontally.
Among one embodiment, with reference to figure 1, shown in Figure 3, present embodiment is a robotization embodiment, the measurement of the magnetized permanent magnet magnetic of single direction drift angle.
Present embodiment is detected by objective table 2, displacement platform 3, multidimensional electric control gear 4, induced voltage generation unit 5, induced voltage and processing unit 6, computer realization and processing unit 7 are formed.
Objective table 2 is used for placing and fixing test sample 1, specifically is made up of cylindricality stage body 21, fixed block 22 and cavity 23, and specimen 1 is placed in the inner chamber, make sample direction of magnetization A to Helmholtz coils 5 deads in line or parallel, fix with fixed block 22.
Displacement platform 3 specifically is made up of Z axle 31, X-axis 32, turning axle 33, locating piece 34, the pedestal 35 that has a locating slot
Multidimensional electric control gear 4 specifically is made up of motor 41,42,43,3 rotation and the displacements of control displacement platform.
Induced voltage generation unit 5 is used for induction by the induced voltage signal that specimen 1 produces, and is made up of Helmholtz coils 5.
The generation of induced voltage:
1. specimen direction of magnetization A to Helmholtz coils 5 deads in line or parallel, the X-axis 32 of multidimensional electric control gear 4 control displacement platforms 3 makes objective table 2 Rotate 180s °, Helmholtz coils 5 produces induced voltage signal V1;
2. the X-axis 32 of multidimensional electric control gear 4 control displacement platforms 3 makes objective table 2 half-twists, makes sample B to forwarding A to, repeating step 1., and Helmholtz coils 4 produces induced voltage signal V2;
3. multidimensional electric control gear 4 control objective tables 2 are around turning axle 33 half-twists, make sample C to forward to B to, and 31 horizontal shifts of control Z axle, make sample be positioned at Helmholtz coils 5 middle sections, repeating step is 2., 1. Helmholtz coils 4 produces induced voltage signal V3.
Induced voltage detects and processing unit 6 is used for the voltage signal V1 that Helmholtz coils 5 is responded to, V2, V3 gathers, amplifies and carries, formed by digital voltage integrator 61 and signal amplifier 62, the input end of digital voltage integrator 61 is connected with the output terminal of Helmholtz coils 5, be used for gathering the voltage signal of Helmholtz coils 5 inductions, output terminal is connected with the input end of signal amplifier 62, and the output terminal of signal amplifier 62 is connected with processing unit (7) with computer control.
Computer control and processing unit 7 send instruction to multidimensional electric control gear (4), control objective table (2) rotation and displacement platform (3) displacement; Receive the signal that induced voltage detects and processing unit 6 is carried, and convert corresponding flux value φ 1 to, φ 2, and φ 3, calculate the magnet magnetic declination.
Embodiment 2, and with reference to figure 2, shown in Figure 3, induced voltage detection and processing unit 6 are digital fluxmeters in the present embodiment, and digital fluxmeter input end is connected with the output terminal of Helmholtz coils 5, and its output terminal is connected with processing unit 7 with computer control.Other structure is identical with embodiment 1.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention does, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. permanent magnet magnetic measurement of angle device is characterized in that: detected and processing unit (6) and computer control and processing unit (7) are formed by objective table (2), displacement platform (3), multidimensional electric control gear (4), induced voltage generation unit (5), induced voltage; Described objective table (2) is used for placing and fixed sample; Described displacement platform (3) is used for regulating objective table (2); Described multidimensional electric control gear (4) control displacement platform (3) rotation is or/and displacement; Described induced voltage generation unit (5) is used for obtaining the induced voltage signal that testing sample produces; Described induced voltage detection and processing unit (6) are for detection of converting the magnetic flux data to the processing induced voltage signal and with induced voltage signal; Described computer control and processing unit (7) are used for control multidimensional electric control gear (4) makes displacement platform (3) rotation or displacement, convert the signal that induced voltage detects and processing unit (6) is carried to flux value, record and storage magnetic flux data are calculated the permanent magnet magnetic drift angle.
2. permanent magnet magnetic measurement of angle device according to claim 1, it is characterized in that: described objective table (2) is column structure; Described objective table (2) comprises cylindricality stage body (21), fixed block (22) and cavity (23); Described objective table (2) is nonmagnetic substance.
3. permanent magnet magnetic measurement of angle device according to claim 1 is characterized in that: described displacement platform (3) is regulated the middle section that objective table (2) is positioned at induced voltage generation unit (5); Described displacement platform (3) comprises Z axle (31), X-axis (32), turning axle (33), locating piece (34) and has the pedestal (35) of locating slot; The described pedestal (35) that has locating slot is made by nonmagnetic substance.
4. permanent magnet magnetic measurement of angle device according to claim 1, it is characterized in that: described multidimensional electric control gear (4) control displacement platform (3) rotation or displacement, guarantee the dead in line of sample test direction and induced voltage generation unit (5), guarantee that sample is positioned at the central homogeneous area of induced voltage generation unit (5); Described multidimensional electric control gear (4) comprises Rotation Controllers (41), Z axle driving governor (42), and X-axis driving governor (43), described Rotation Controllers (41), Z axle driving governor (42), and X-axis driving governor (43) control respectively displacement platform (3) be rotated, vertically mobile and move horizontally.
5. permanent magnet magnetic measurement of angle device according to claim 1, it is characterized in that: described induced voltage generation unit (5) is Helmholtz coils.
6. permanent magnet magnetic measurement of angle device according to claim 1, it is characterized in that: described induced voltage detects and processing unit (6) comprises digital voltage integrator (61) and signal amplifier (62), described digital voltage integrator (61) input end is connected with the output terminal of described induced voltage generation unit (5), is used for receiving the induced voltage signal of this induced voltage generation unit (5); Described signal amplifier (62) input end is connected with the output terminal of above-mentioned digital voltage integrator (61), described induced voltage signal is amplified the back be connected with processing unit (7) with computer control by its output terminal.
7. permanent magnet magnetic measurement of angle device according to claim 1, it is characterized in that: described induced voltage detects and processing unit (6) is digital fluxmeter, described digital fluxmeter input end is connected with the output terminal of described induced voltage generation unit (5), and its output terminal is connected with processing unit (7) with computer control.
8. a method of utilizing the described measurement mechanism of claim 1 that the permanent magnet magnetic drift angle is measured is characterized in that: comprise the steps: the placement of (101) objective table and fixing test sample; (102) objective table and displacement platform are regulated, controlled to the multidimensional electric control gear; (103) induced voltage detection and processing unit are gathered the voltage signal amplification and are delivered to computer control and processing unit; (104) computer control and processing unit calculate the magnet magnetic declination; Described step specifically comprises the steps in (102), (1021) specimen direction of magnetization A to induced voltage generation unit dead in line or parallel, the X-axis of multidimensional electric control gear control displacement platform makes objective table Rotate 180 °, and the induced voltage generation unit produces induced voltage signal V
1(1022) X-axis of multidimensional electric control gear control displacement platform makes the objective table half-twist, makes sample B to forwarding A to, repeating step (1021), and the induced voltage generation unit produces induced voltage signal V
2(1023) multidimensional electric control gear control objective table is around the turning axle half-twist, make sample C to forward to B to, and control Z axle horizontal displacement makes sample be positioned at induced voltage generation unit middle section, repeating step (1022) (1021), the induced voltage generation unit produces induced voltage signal V
3In the described step (104), computer control and processing unit send instruction to the multidimensional electric control gear, the rotation of control objective table and the displacement of displacement platform; Receive the signal that induced voltage detects and processing unit is carried, and convert corresponding flux value to, calculate the magnet magnetic declination.
9. permanent magnet magnetic measurement of angle method according to claim 8, it is characterized in that: described induced voltage generation unit is Helmholtz coils; Described objective table (2) is column structure; Described objective table (2) comprises cylindricality stage body (21), fixed block (22) and cavity (23); Described objective table (2) is nonmagnetic substance; Described multidimensional electric control gear (4) control displacement platform (3) rotation or displacement guarantee the dead in line of sample test direction and induced voltage generation unit (5), guarantee that sample is positioned at the central homogeneous area of induced voltage generation unit (5); Described multidimensional electric control gear (4) comprises Rotation Controllers (41), Z axle driving governor (42), X-axis driving governor (43), and described Rotation Controllers (41), Z axle driving governor (42), X-axis driving governor motor (43) are controlled displacement platform (3) respectively and be rotated, vertically move and move horizontally.
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| CN103412267B (en) * | 2013-08-20 | 2015-11-18 | 黄可可 | For measuring the method and apparatus of the magnetic declination of tile magnetic element |
| CN105699918A (en) * | 2016-01-28 | 2016-06-22 | 宁波兴隆磁性技术有限公司 | A calibration method applied to a test reference surface in a magnetic declination device |
| CN105823993A (en) * | 2016-03-11 | 2016-08-03 | 宁波市计量测试研究院（宁波市衡器管理所） | Magnetic declination measuring system |
| CN106526510B (en) * | 2016-11-21 | 2023-10-13 | 京磁材料科技股份有限公司 | Device and method for measuring magnetic declination of magnet part |
| DE102017219584A1 (en) * | 2017-11-03 | 2019-05-09 | Zf Friedrichshafen Ag | Magnetic field sensor and method for mounting a magnet |
| CN110146833A (en) * | 2019-05-30 | 2019-08-20 | 核工业理化工程研究院 | Magnetic steel component measurement method based on LABVIEW |
| CN110057830A (en) * | 2019-05-30 | 2019-07-26 | 核工业理化工程研究院 | Magnetic steel component measuring device based on LABVIEW |
| CN111736101A (en) * | 2020-08-04 | 2020-10-02 | 江西科技学院 | Rotatable carrying mechanism for magnetic variable measurement |
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Application publication date: 20120411 Assignee: Mianyang West magnetic Co., Ltd. Assignor: Southwest Institute of Applied Magnetics Contract record no.: 2014510000058 Denomination of invention: Device and method for measuring magnetic declination of permanent magnet Granted publication date: 20130807 License type: Exclusive License Record date: 20140604 |
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