CN109842245A - A kind of permanent magnet machine rotor position-measurement device and method - Google Patents
A kind of permanent magnet machine rotor position-measurement device and method Download PDFInfo
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- CN109842245A CN109842245A CN201910058923.5A CN201910058923A CN109842245A CN 109842245 A CN109842245 A CN 109842245A CN 201910058923 A CN201910058923 A CN 201910058923A CN 109842245 A CN109842245 A CN 109842245A
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- permanent magnet
- hall sensor
- annular permanent
- motor
- machine rotor
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- 238000005259 measurement Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title abstract description 8
- 230000001360 synchronised effect Effects 0.000 claims abstract description 9
- 238000000691 measurement method Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 10
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
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- 230000036039 immunity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The present invention relates to a kind of permanent magnet machine rotor position-measurement device and methods, device includes annular permanent magnet and Hall sensor, it is characterized in that, the annular permanent magnet is mounted on the motor shaft of motor, the annular permanent magnet being capable of rotation with motor and motor shaft synchronous rotary；The annular permanent magnet replaces radial magnetizing, so that the number of pole-pairs of annular permanent magnet is equal with the number of pole-pairs of the motor；The side of the anchor ring of the annular permanent magnet is provided with Hall sensor, and there are air gaps between the Hall sensor and annular permanent magnet；The Hall sensor is connected by cable with data processing equipment；The Hall sensor is used to acquire the magnetic field angle of annular permanent magnet, and the magnetic field angle of collected annular permanent magnet is converted to the rotor-position of permanent magnet synchronous motor by the data processing equipment.Present invention ensure that reducing cost while measurement data high reliability.
Description
Technical field
The present invention relates to motor rotor position field of measuring technique, measure more particularly to a kind of permanent magnet machine rotor position
Device and method.
Background technique
In the prior art, magneto control mode mostly uses vector controlled, Direct Torque Control, PI control, sliding formwork control
System etc., but any control mode no matter is used to require to determine that permanent magnet machine rotor position becomes as the input of control system
Amount.Traditional rotor position measurement method has grating encoder detection, rotary transformer detection, counter electromotive force detection technique etc..
However grating encoder detection device is expensive in actual use and high-precision grating encoder size is larger,
Rotary transformer detection needs external excitation winding and rotary transformer rotor and external decoding circuitry higher cost, counter electromotive force
Measuring technique is big to the very sensitive detection difficulty of the variation of stator voltage and current value in motor low speed.
From the above mentioned, how to seek a kind of new permanent magnet machine rotor location measurement method, to realize motor rotor position
Quick accurate, strong immunity to interference is simply installed, the detection method and device of low cost, is become those skilled in the art and is needed
The technical issues of solution.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of permanent magnet machine rotor position-measurement device and methods, it is ensured that
Cost is reduced while measurement data high reliability.
The technical solution adopted by the present invention to solve the technical problems is: providing a kind of permanent magnet machine rotor position measurement dress
It sets, including annular permanent magnet and Hall sensor, the annular permanent magnet is mounted on the motor shaft of motor, the annular permanent magnet
Body can with motor rotation and motor shaft synchronous rotary；The annular permanent magnet replaces radial magnetizing, so that annular permanent magnet
The number of pole-pairs of body is equal with the number of pole-pairs of the motor；The side of the anchor ring of the annular permanent magnet is provided with Hall sensor,
There are air gaps between the Hall sensor and annular permanent magnet；The Hall sensor passes through cable and data processing equipment phase
Even；The Hall sensor is used to acquire the magnetic field angle of annular permanent magnet, and the data processing equipment is by collected annular
The magnetic field angle of permanent magnet is converted to the rotor-position of permanent magnet synchronous motor.
The ring of the annular permanent magnet is arranged in by the mounting device being mounted on electric motor end cap for the Hall sensor
The side in face.
The measurement sensitive surface of the Hall sensor is radial vertical with the annular permanent magnet.
The technical solution adopted by the present invention to solve the technical problems is: also providing a kind of permanent magnet machine rotor position measurement
Method, comprising the following steps:
(1) it magnetizes to annular permanent magnet, the number of pole-pairs that magnetizes is identical as the number of pole-pairs to measured motor, and the mode that magnetizes is to hand over
For radial magnetizing and guarantee that magnetic field strength is greater than the magnetic field strength inside annular permanent magnet outside annular permanent magnet；
(2) annular permanent magnet finished that will magnetize is mounted on the motor shaft to measured motor；
(3) Hall sensor is fixed on the end cap to measured motor, end cap passes Hall after installing with motor body
Sensor is located just at the anchor ring side of circular permanent magnet, and there are air gaps between Hall sensor and annular permanent magnet；
(4) output end of Hall sensor is connected with data processing equipment, data processing equipment reads Hall sensor
Electric signal output, and the electric signal that will acquire is converted to the rotor-position of motor.
Hall sensor in the step (3) is fixed on the end cap to measured motor by mounting device.
The measurement sensitive surface of Hall sensor and the annular permanent magnet after end cap and motor body are installed in the step (3)
The radial direction of body is vertical.
Beneficial effect
Due to the adoption of the above technical solution, compared with prior art, the present invention having the following advantages that and actively imitating
Fruit: the present invention is coaxially installed on the magnetic field angle of permanent magnet on motor shaft by Hall sensor measurement, uses data processing mould
Block can measure the rotor-position of magneto.More traditional rotary transformer measurement method, present invention reduces detection devices
Cost, makes to detect eased, simplifies traditional measurement method, and improve detection device anti-interference ability.
Detailed description of the invention
Fig. 1 is measuring principle schematic diagram of the invention；
Fig. 2 is the location diagram of annular permanent magnet and Hall sensor in the present invention；
Fig. 3 is the magnetic direction schematic diagram of Hall sensor in the present invention.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiments of the present invention are related to a kind of permanent magnet machine rotor position-measurement device, are radially filled using annular permanent magnet
Magnetic, is mounted on synchronous rotation on motor shaft, and annular permanent magnet magnetic field angle changes with motor rotating circulating；Make
With Hall sensor measure annular permanent magnet field angle, electric signal is exported to Hall sensor by data processing equipment and is carried out
Data conversion obtains annular permanent magnet angular values, which can measure permanent magnet machine rotor position indirectly.
As shown in Figure 1, the permanent magnet machine rotor position-measurement device includes annular permanent magnet 4 and Hall sensor 3, it is described
Annular permanent magnet 4 is mounted on the motor shaft 6 of motor 1, the annular permanent magnet 4 can with motor 1 rotation and motor shaft 6
Synchronous rotary；The annular permanent magnet 4 replaces radial magnetizing, so that the number of pole-pairs of annular permanent magnet 4 and the motor 1 is extremely right
Number is equal；The side of the anchor ring of the annular permanent magnet 4 is provided with Hall sensor 3, the Hall sensor 3 and annular permanent magnet
There are air gaps between iron 4；The Hall sensor 3 is connected by cable 7 with data processing equipment 5；The Hall sensor 3 is used
In the magnetic field angle of acquisition annular permanent magnet, the data processing equipment 5 turns the magnetic field angle of collected annular permanent magnet
It is changed to the rotor-position of permanent magnet synchronous motor.Wherein, the Hall sensor 3 is filled by the installation being mounted on electric motor end cap 2
The side for the anchor ring that 8 are arranged in the annular permanent magnet 4 is set, and the measurement sensitive surface of Hall sensor 3 and the annular are forever
The radial direction of magnet 4 is vertical, as shown in Figures 2 and 3, wherein plane is vertical Hall sensor 3 guarantees its Bx and Bz axis when installing where
Directly in the radial direction By of annular permanent magnet 4, such setting can guarantee that Hall sensor 3 can accurately collect annular permanent-magnet
The magnetic field angle of iron 4.After Hall sensor 3 collects data, PWM electric signal can be exported, different PWM electric signals illustrates
The magnetic field angle of different annular permanent magnets 4, data processing equipment 5 can receive Hall sensor 3 and export PWM duty cycle letter
Number, permanent magnet machine rotor position, pwm signal and permanent magnet machine rotor position corresponding relationship formula are calculated according to the following formula
It is as follows:
θ=θ0+2π/(K·P)·(D-D0)
θ: permanent magnet machine rotor position；
θ0: permanent magnet machine rotor initial position；
K: Hall sensor PWM duty cycle exports maximum changing range；
P: magneto number of pole-pairs to be measured；
D: Hall sensor output duty cycle signal；
D0: Hall sensor exports initial duty cycle signal
After it receives the PWM electric signal D of the transmission of Hall sensor 3, motor initial position θ according to the pre-stored data0、
The exportable maximum duty cycle range K of Hall sensor, the motor number of pole-pairs P of magneto to be measured, Hall sensor output are just
Beginning duty cycle signals D0, current permanent magnet machine rotor location information is calculated.It is as follows when specific detection:
A magnetizes to circular ring-shaped permanent-magnet iron, and the number of pole-pairs that magnetizes is identical as motor number of pole-pairs is installed and used, and the mode that magnetizes is the South Pole
(S) arctic (N) grade replaces radial magnetizing and guarantees that outside magnetic field strength is larger；
The B annular permanent magnet finished that will magnetize is mounted on motor shaft, and is connected in motor shaft；
C Hall sensor is fixed on back end cover for motor, and electric motor end cap makes Hall sensor rigid after installing with motor body
It is located at circular ring-shaped permanent-magnet iron hoop face side well, air gap between Hall sensor and permanent magnet is determined according to the permanent magnet intensity that magnetizes,
Sensor position magnetic field strength meets the requirement of chip magnetic field strength；
Hall sensor is connected by D by cable with data processing equipment；
E data processing equipment reads the output of Hall sensor electric signal, will using calculation formula according to obtained electric signal
PWM electric signal is converted to permanent magnet machine rotor location information.
It is not difficult to find that the present invention is coaxially installed on the magnetic field angle of permanent magnet on motor shaft by Hall sensor measurement,
The rotor-position of magneto can be measured using data processing equipment.Compared to traditional rotary transformer measurement method, originally
Invention reduces detection device cost, makes to detect eased, simplifies traditional measurement method, and use PWM count word signal
Transmission of location information, to improve detection device anti-interference ability.
Claims (6)
1. a kind of permanent magnet machine rotor position-measurement device, including annular permanent magnet and Hall sensor, which is characterized in that described
Annular permanent magnet is mounted on the motor shaft of motor, and the annular permanent magnet can be with the rotation of motor rotation synchronous with motor shaft
Turn；The annular permanent magnet replaces radial magnetizing, so that the number of pole-pairs of annular permanent magnet is equal with the number of pole-pairs of the motor；Institute
The side for stating the anchor ring of annular permanent magnet is provided with Hall sensor, and there are gas between the Hall sensor and annular permanent magnet
Gap；The Hall sensor is connected by cable with data processing equipment；The Hall sensor is for acquiring annular permanent magnet
Magnetic field angle, the magnetic field angle of collected annular permanent magnet is converted to permanent magnet synchronous motor by the data processing equipment
Rotor-position.
2. permanent magnet machine rotor position-measurement device according to claim 1, which is characterized in that the Hall sensor is logical
Cross the side that the anchor ring of the annular permanent magnet is arranged in the mounting device being mounted on electric motor end cap.
3. permanent magnet machine rotor position-measurement device according to claim 1, which is characterized in that the Hall sensor
It is radial vertical with the annular permanent magnet to measure sensitive surface.
4. a kind of permanent magnet machine rotor location measurement method, which comprises the following steps:
(1) it magnetizes to annular permanent magnet, the number of pole-pairs that magnetizes is identical as the number of pole-pairs to measured motor, and the mode that magnetizes is alternating diameter
To magnetizing and guarantee that magnetic field strength is greater than the magnetic field strength inside annular permanent magnet outside annular permanent magnet；
(2) annular permanent magnet finished that will magnetize is mounted on the motor shaft to measured motor；
(3) Hall sensor is fixed on the end cap to measured motor, makes Hall sensor after end cap and motor body installation
It is located just at the anchor ring side of circular permanent magnet, and there are air gaps between Hall sensor and annular permanent magnet；
(4) output end of Hall sensor is connected with data processing equipment, data processing equipment reads the electricity of Hall sensor
Signal output, and the electric signal that will acquire is converted to the rotor-position of motor.
5. permanent magnet machine rotor location measurement method according to claim 4, which is characterized in that in the step (3)
Hall sensor is fixed on the end cap to measured motor by mounting device.
6. permanent magnet machine rotor location measurement method according to claim 4, which is characterized in that step (3) middle-end
It covers radial vertical with the annular permanent magnet with the measurement sensitive surface of Hall sensor after motor body installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910058923.5A CN109842245A (en) | 2019-01-22 | 2019-01-22 | A kind of permanent magnet machine rotor position-measurement device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910058923.5A CN109842245A (en) | 2019-01-22 | 2019-01-22 | A kind of permanent magnet machine rotor position-measurement device and method |
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| CN109842245A true CN109842245A (en) | 2019-06-04 |
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| CN201910058923.5A Pending CN109842245A (en) | 2019-01-22 | 2019-01-22 | A kind of permanent magnet machine rotor position-measurement device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417192A (en) * | 2019-08-05 | 2019-11-05 | 东风电子科技股份有限公司 | Novel rotor position detecting module for low-speed electronic commercial vehicle driving motor |
| CN113572312A (en) * | 2021-07-01 | 2021-10-29 | 上海大学 | Linear Hall angle and displacement integrated detection device and method based on homopolar permanent magnet birotor |
| CN114089231A (en) * | 2021-11-02 | 2022-02-25 | 湖南大学 | Magnetic sensor module, printed permanent magnet synchronous motor and application method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1713490A (en) * | 2005-05-18 | 2005-12-28 | 江苏大学 | Digital-control servo system and its control for permanent magnet synchronous motor without bearing |
| CN101532521A (en) * | 2008-03-13 | 2009-09-16 | 卢克摩擦片和离合器两合公司 | Fluid pressure cylinder with information transmitter |
| CN101594029A (en) * | 2009-07-01 | 2009-12-02 | 宁波双林汽车部件股份有限公司 | Dual-Hall sensor motor |
| CN102192759A (en) * | 2010-03-11 | 2011-09-21 | 上海信耀电子有限公司 | Circumferential magnetic conduction structure of Hall sensor |
| CN102545524A (en) * | 2012-02-14 | 2012-07-04 | 美的威灵电机技术（上海）有限公司 | Rotor position detection device for permanent magnet motor |
| CN102889897A (en) * | 2011-07-20 | 2013-01-23 | 苏州泰铎电气有限公司 | Hall sensor assembly and permanent magnet motor with same |
| CN104092344A (en) * | 2014-06-24 | 2014-10-08 | 北京航天控制仪器研究所 | Brushless motor with built-in Hall sensor |
| CN107026539A (en) * | 2017-05-22 | 2017-08-08 | 华中科技大学 | Integrated magnetic coder and Hall switch determine the external rotor permanent magnet synchronous machine of position |
| US20180342933A1 (en) * | 2017-05-23 | 2018-11-29 | Simmonds Precision Products, Inc. | Halbach array for rotor position sensing |
| CN209375383U (en) * | 2019-01-22 | 2019-09-10 | 上海拓为汽车技术有限公司 | A kind of permanent magnet machine rotor position-measurement device |
-
2019
- 2019-01-22 CN CN201910058923.5A patent/CN109842245A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1713490A (en) * | 2005-05-18 | 2005-12-28 | 江苏大学 | Digital-control servo system and its control for permanent magnet synchronous motor without bearing |
| CN101532521A (en) * | 2008-03-13 | 2009-09-16 | 卢克摩擦片和离合器两合公司 | Fluid pressure cylinder with information transmitter |
| CN101594029A (en) * | 2009-07-01 | 2009-12-02 | 宁波双林汽车部件股份有限公司 | Dual-Hall sensor motor |
| CN102192759A (en) * | 2010-03-11 | 2011-09-21 | 上海信耀电子有限公司 | Circumferential magnetic conduction structure of Hall sensor |
| CN102889897A (en) * | 2011-07-20 | 2013-01-23 | 苏州泰铎电气有限公司 | Hall sensor assembly and permanent magnet motor with same |
| CN102545524A (en) * | 2012-02-14 | 2012-07-04 | 美的威灵电机技术（上海）有限公司 | Rotor position detection device for permanent magnet motor |
| CN104092344A (en) * | 2014-06-24 | 2014-10-08 | 北京航天控制仪器研究所 | Brushless motor with built-in Hall sensor |
| CN107026539A (en) * | 2017-05-22 | 2017-08-08 | 华中科技大学 | Integrated magnetic coder and Hall switch determine the external rotor permanent magnet synchronous machine of position |
| US20180342933A1 (en) * | 2017-05-23 | 2018-11-29 | Simmonds Precision Products, Inc. | Halbach array for rotor position sensing |
| CN209375383U (en) * | 2019-01-22 | 2019-09-10 | 上海拓为汽车技术有限公司 | A kind of permanent magnet machine rotor position-measurement device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417192A (en) * | 2019-08-05 | 2019-11-05 | 东风电子科技股份有限公司 | Novel rotor position detecting module for low-speed electronic commercial vehicle driving motor |
| CN113572312A (en) * | 2021-07-01 | 2021-10-29 | 上海大学 | Linear Hall angle and displacement integrated detection device and method based on homopolar permanent magnet birotor |
| CN114089231A (en) * | 2021-11-02 | 2022-02-25 | 湖南大学 | Magnetic sensor module, printed permanent magnet synchronous motor and application method thereof |
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