CN109341731A - It is a kind of for measuring the sensor of double-rotor machine relative position - Google Patents
It is a kind of for measuring the sensor of double-rotor machine relative position Download PDFInfo
- Publication number
- CN109341731A CN109341731A CN201811439853.XA CN201811439853A CN109341731A CN 109341731 A CN109341731 A CN 109341731A CN 201811439853 A CN201811439853 A CN 201811439853A CN 109341731 A CN109341731 A CN 109341731A
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- Prior art keywords
- rotor
- stator
- double
- sensor
- measuring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K24/00—Machines adapted for the instantaneous transmission or reception of the angular displacement of rotating parts, e.g. synchro, selsyn
Abstract
The invention discloses a kind of for measuring the sensor of double-rotor machine relative position, including from left to right sequentially coaxially the heart lay the first rotor, stator and the second rotor, the right side of the first rotor is the wavy surface with convex peak, bitrochanteric left side is the wavy surface with convex peak, stator includes the left stator being arranged successively, magnetism-isolating loop and right stator, left stator left side and right stator right side are respectively provided with the salient pole opposite with the first rotor and bitrochanteric convex peak, centralized field winding is wound on each salient pole, sine windings and cosine winding, magnetism-isolating loop is equipped among left stator and right stator.The invention has the advantages that realizing non-brushing, the reliability of test is improved, and reduce the quantity of lead-out wire.
Description
Technical field
The invention belongs to hybrid electric vehicle fields, and in particular to one kind is for hybrid vehicle composite construction birotor electricity
The position sensor of machine relative rotation speed measurement.
Background technique
Currently, the position detection of composite construction double-rotor machine generallys use two discrete position sensors or angle passes
Sensor, this method to become more complicated with regard to very complicated composite construction double-rotor machine system originally.Chinese patent text
Offer a kind of sensing for measurement two concentric rotating shafts of double-rotor motor relative rotation speed that CN101545917A was announced on May 7th, 2009
Device, magnetoresistance transformer is unlike traditional magnetoresistance transformer in the sensor: the rotary transformer by
Rotation becomes outer rotor, rotation becomes internal rotor, field winding, sine windings and cosine winding and forms.The sensor the problem is that: should
Sensor signal conveying uses electric brush slip ring structure, in the case where rotor high speed rotation, due to the accuracy of manufacture or assembly precision
Error, electric brush slip ring contact point can occur acutely beat generate spark, reduce the reliability of sensor；Simultaneously because brush is sliding
The presence of ring causes signal transmission faint, reduces running reliability of motor so that the pressure drop of signal source increases.
Summary of the invention
Existing sensor there are aiming at the problem that, the technical problem to be solved by the invention is to provide one kind for measuring
The sensor of double-rotor machine relative rotation speed and position, it can be replaced now, and there are two discrete position detection units, cancel brush,
Structure is simple, improves reliability, reduces double-rotor machine maintenance cost.
It is realized the technical problem to be solved by the present invention is to technical solution in this way, it includes from left to right successively
The first rotor, stator and the second rotor of concentric laying, the right side of the first rotor are the wavy surface with convex peak, second turn
The left side of son is the wavy surface with convex peak, and stator includes the left stator being arranged successively, magnetism-isolating loop and right stator, and left stator is left
Side and right stator right side are respectively provided with the salient pole opposite with the first rotor and bitrochanteric convex peak, on each salient pole around
There are centralized field winding, sine windings and cosine winding, is equipped with magnetism-isolating loop among left stator and right stator.
The solution have the advantages that:
Since all conducting wires of the present invention are drawn from stator, realizes non-brushing, improve the reliability of test；Present invention installation
In motor one end, so that electric machine structure is more compact, while the field winding phase in left and right stator salient poles (is equivalent to respectively
The primary side of common transformer motivates winding, need to use two pairs of extraction wires), the present invention is in such a way that two field windings are in parallel
A pair of of lead-out wire is only needed therefore to reduce the quantity of lead-out wire.Sine and cosine winding is equivalent to the secondary side of common rotary transformer
Coil, signal are exported from second siding ring.So it is an advantage of the invention that realization non-brushing, improves the reliability of test, again
Reduce the quantity of lead-out wire.
Detailed description of the invention
Detailed description of the invention of the invention is as follows:
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the side view of the first rotor；
Fig. 3 is the front view of stator；
Fig. 4 is that the present invention is mounted on schematic diagram on double-rotor machine.
In figure: 1. the first rotors；2. stator；2-1. left stator；2-2. magnetism-isolating loop；The right stator of 2-3.；2-4. salient pole；3. the
Two rotors.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
As shown in Figure 1, the present invention include from left to right sequentially coaxially the heart lay the first rotor 1, stator 2 and the second rotor
3, the first rotor 1 and the second rotor 3 are stacked by multilayer silicon steel sheet, what winding do not let alone, realizes contactless operation；
As shown in Fig. 2, the right side of the first rotor 1 is the wavy surface with multiple convex peaks, the present embodiment is convex equipped with 4
Peak makes to constitute sinusoidal air gap between 1 right side of the first rotor and the left side of stator 2；The first rotor 1 and stator 2 form left magnetic
Resistive rotary transformer；
The left side of second rotor 3 is the wavy surface with multiple convex peaks, and the present embodiment is equipped with 4 convex peaks, the right side of stator 2
Sinusoidal air gap is constituted between side and the left side of the second rotor 3, stator 2 and the second rotor 3 form a right reluctance type and rotate
Transformer.
As shown in figures 1 and 3, stator 2 includes left stator 2-1, the magnetism-isolating loop 2-2 and right stator 2-3, Zuo Ding being arranged successively
The sub- left side 2-1 and the right side right stator 2-3 are respectively provided with a salient pole 2-4 opposite with rotor convex peak.To reduce output signal
Harmonic content, the measuring accuracy that rotation becomes is improved, in the convex peak number of 1 right side of the first rotor and the left side left stator 2-1
Salient pole number is at certain matching relationship, and in the present embodiment, respectively there are 4 convex peak phases of 10 salient poles with rotor-side in stator two sides
Cooperate, centralized field winding, sine windings and cosine winding is wound on each salient pole, the number of turns of the sine windings is by just
The number of turns of the variation of string rule, the cosine winding is changed by cosine rule, is equipped among left stator 2-1 and right stator 2-3 every magnetic
Ring 2-2 keeps the magnetic circuit of the right and left mutually indepedent, guarantees that the measurement accuracy of magnetoresistance transformer is unaffected.
As shown in figure 4, the present invention is mounted on double-rotor machine, the first rotor 1 on engine output shaft, i.e., with it is double
The internal rotor of rotor electric machine is connected, and the shaft hole diameter of stator 2 and the second rotor 3 is all larger than 1 axis hole of the first rotor, not same
On axis, stator 2 is fixed on casing, and the second rotor 3 is connected with the outer rotor of double-rotor machine.
Working principle of the present invention:
Using the saliency of rotor magnetic pole, when rotor-position changes, the air-gap permeance in space changes.When
When adding AC sinusoidal voltage to excitation winding, sine windings and the output of cosine winding are induced with rotor position information
Just, cosine electromotive force, to measure the corner of rotor by the variation of output voltage amplitude, output voltage amplitude is depended primarily on
The size of air-gap permeance between stator and the relative position of rotor tooth.Rotor often turns over a rotor polar distance, air-gap permeance variation one
The periodicity in a period, air-gap permeance variation is equal to rotor number of poles.
The decoding principle of magnetoresistance transformer is as follows:
Assuming that the input voltage of excitation side winding motivates are as follows:
E=Um·sin(ωt)
Wherein, E is excitation winding voltage, and Um is excitation winding voltage magnitude, and the π of ω=2 f, f are exciting signal frequency.
Then just, cosine winding output voltage is respectively as follows:
U1=KUm·sin(ωt)·sinθ
U2=KUm·sin(ωt)·cosθ
Wherein, U1、U2It is positive respectively, cosine induced voltage, K is proportionality coefficient, and θ is rotor angular displacement.
Rotary transformer is in decoding, by U1Multiplied by cos φ, U2Multiplied by sin φ, wherein Ф is the output that converter generates
Angle, to obtain:
U1Cos φ=KUm·sin(ωt)·sinθ·cosφ
U2Sin φ=KUm·sin(ωt)·cosθ·sinφ
Two are subtracted each other:
Δ=U1·cosφ-U2Sin φ=KUm·sin(ωt)(sinθ·cosφ-cosθ·sinφ)
=KUm·sin(ωt)×sin(θ-φ)
The feedback output angle Ф that converter generates is compared with the rotor angular displacement θ of input；When converter correctly track it is defeated
When entering angle θ, error between the two will be driven to 0, i.e. Δ=0, at this time θ=φ, therefore decode angle of rotor.
The angle of rotor that left and right magnetic resistance rotary transformer decodes is made the difference to the relative positional relationship for obtaining two rotors.
Claims (3)
1. a kind of for measuring the sensor of double-rotor machine relative position, it is characterized in that: including the from left to right sequentially coaxially heart
The first rotor (1), stator (2) and the second rotor (3) of laying, the right side of the first rotor (1) are the wavy surface with convex peak,
The left side of second rotor (3) is the wavy surface with convex peak, and stator (2) includes the left stator (2-1) being arranged successively, magnetism-isolating loop
(2-2) and right stator (2-3), the left stator left side (2-1) and the right side right stator (2-3) are respectively provided with and the first rotor and
The opposite salient pole of bitrochanteric convex peak (2-4), be wound on each salient pole centralized field winding, sine windings and cosine around
Group, left stator (2-1) and right stator (2-3) are intermediate equipped with magnetism-isolating loop (2-2).
2. the sensor according to claim 1 for double-rotor machine, it is characterized in that: the first rotor (1) and second turn
The single side face of sub (3) has 4 convex peaks, and respectively there are 10 salient poles in stator (2) two sides.
3. it is according to claim 1 or 2 for measuring the sensor of double-rotor machine relative position, it is characterized in that: first
Rotor (1) is connected with the internal rotor of double-rotor machine, and stator (2) is fixed on casing, the second rotor (3) and double-rotor machine
Outer rotor is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811439853.XA CN109341731B (en) | 2018-11-29 | 2018-11-29 | Sensor for measuring relative position of double-rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811439853.XA CN109341731B (en) | 2018-11-29 | 2018-11-29 | Sensor for measuring relative position of double-rotor motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109341731A true CN109341731A (en) | 2019-02-15 |
| CN109341731B CN109341731B (en) | 2021-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811439853.XA Active CN109341731B (en) | 2018-11-29 | 2018-11-29 | Sensor for measuring relative position of double-rotor motor |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6924574B2 (en) * | 2003-05-30 | 2005-08-02 | Wisconsin Alumni Research Foundation | Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine |
| CN101545917A (en) * | 2009-05-07 | 2009-09-30 | 哈尔滨工业大学 | Sensor for measuring relative rotating speed of two concentric rotating shafts of double-rotor motor |
| CN102664096A (en) * | 2012-06-06 | 2012-09-12 | 哈尔滨工业大学 | Outer rotor salient pole reluctance type multi-pole rotary transformer |
| CN102723185A (en) * | 2012-06-06 | 2012-10-10 | 哈尔滨工业大学 | Double-channel axial magnetic circuit reluctance type rotary transformer |
| CN102842415A (en) * | 2012-09-25 | 2012-12-26 | 苏州和鑫电气股份有限公司 | Resolver |
| CN204514270U (en) * | 2015-03-19 | 2015-07-29 | 江门职业技术学院 | Birotor reluctance type angle level sensor |
-
2018
- 2018-11-29 CN CN201811439853.XA patent/CN109341731B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6924574B2 (en) * | 2003-05-30 | 2005-08-02 | Wisconsin Alumni Research Foundation | Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine |
| CN101545917A (en) * | 2009-05-07 | 2009-09-30 | 哈尔滨工业大学 | Sensor for measuring relative rotating speed of two concentric rotating shafts of double-rotor motor |
| CN102664096A (en) * | 2012-06-06 | 2012-09-12 | 哈尔滨工业大学 | Outer rotor salient pole reluctance type multi-pole rotary transformer |
| CN102723185A (en) * | 2012-06-06 | 2012-10-10 | 哈尔滨工业大学 | Double-channel axial magnetic circuit reluctance type rotary transformer |
| CN102842415A (en) * | 2012-09-25 | 2012-12-26 | 苏州和鑫电气股份有限公司 | Resolver |
| CN204514270U (en) * | 2015-03-19 | 2015-07-29 | 江门职业技术学院 | Birotor reluctance type angle level sensor |
Non-Patent Citations (1)
| Title |
|---|
| 徐奇伟: "混合动力车用复合结构永磁电机中磁场耦合", 《电工技术学报》 * |
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| CN109341731B (en) | 2021-06-18 |
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