CN104154857B - Low-power magneto-resistive angle sensor with compensation - Google Patents
Low-power magneto-resistive angle sensor with compensation Download PDFInfo
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- CN104154857B CN104154857B CN201410399834.4A CN201410399834A CN104154857B CN 104154857 B CN104154857 B CN 104154857B CN 201410399834 A CN201410399834 A CN 201410399834A CN 104154857 B CN104154857 B CN 104154857B
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Abstract
The invention provides a low-power magneto-resistive angle sensor with compensation, comprising a stator shell, a stator core, an excitation coil, a sine output coil, a cosine output coil, a sine compensation coil, a cosine compensation coil, a rotor lining, and a rotor core. The outer circumference of the rotor core is provided with toothed slots, and the rotor core is mounted on the rotor lining. The inner circumference of the stator core is provided with toothed slots, and the stator core is mounted in the stator shell. The excitation coil, the sine output coil, the cosine output coil, the sine compensation coil and the cosine compensation coil are wound on the stator core. The compensation coils can carry out error compensation adjustment on the output precision of the angle sensor. The stator core and the rotor core are machined through linear cutting after lamination of highly magnetic conductive material. The power consumption of the angle sensor can be reduced, the size can be reduced, and the precision can be improved. The low-power magneto-resistive angle sensor with compensation has the advantages of an error compensation function, low power consumption, small size, high precision, convenient processing and manufacture, and the like.
Description
Technical field
The angular surveying of the present invention quick rotary part be applied to the plant equipment such as gyroaccelerometer, specifically, relates to
And a kind of with compensate low-power consumption magneto resistive angular sensor.
Background technology
Magneto resistive angular sensor typically adopts stalloy as the core material of stator core and rotor core.Typically adopt
With punch die punching punching, more manually it is overrided to form with mould, the stator core that the method makes and rotor core notch are irregular,
Teeth groove low precision.For improving concentricity and ovality, generally require to increase stator core inner circle and the cylindrical mill of rotor core adds
Work, but fundamentally do not improve the teeth groove precision of stator core and rotor core.Stalloy is used as core material, magnetic conductance
Rate is low, typically only with 400～500hz frequency, will reach same fan-out capability, needs the input current of magnetizing coil big.
The pcrmeability of general fe-Ni soft magnetic alloy is higher than stalloy, but because the magnetic property of general iron-nickel alloy is quick to STRESS VARIATION
Sense, the stability of impact angular transducer, therefore seldom adopt.Due to the magnetizing coil of variable reluctance angular transducer and defeated
Go out in all embedded stator core slot of coil, between coil, distribution capacity is big, the stationary component producing in output winding lead to zero-bit and
The increase of quadrature error is it is impossible to meet the requirement to angle sensor accuracy for the gyroaccelerometer.
Content of the invention
The invention solves the problems that technical problem be: overcome the deficiencies in the prior art, provide a kind of low in energy consumption, small volume,
High precision, the low-power consumption magneto resistive angular sensor with compensating of convenient processing and manufacture.
For solving above-mentioned technical problem, the technical solution used in the present invention includes:
A kind of low-power consumption magneto resistive angular sensor with compensating, including stator case, stator core, magnetizing coil, just
String output winding, cosine output winding, sinusoidal bucking coil, cosine bucking coil, rotor bushing and rotor core, wherein,
Described stator case is substantially circular cross section；Described stator core substantially ringwise, its internal ring wall is equably provided with multiple
Stator tooth, described stator core setting-in is fixed on the internal ring wall of described stator case；Described rotor core is annular, its outer shroud
Multiple rotor tooths are provided with wall；Described rotor bushing is the revolution body structure with middle cavity, described rotor core suit
It is fixed on the excircle of described rotor bushing；Described magnetizing coil, sinusoidal output winding, cosine output winding, sinusoidal compensation
Winding, cosine compensative winding are sequentially successively wound on each tooth of described stator core, and, described magnetizing coil as
Excitation coil, receives the pumping signal of outside input；Described sine bucking coil and the first fixed resistance and first can power transformations
Resistance head and the tail sequential concatenation composition the first concatenation loop；One end of described sinusoidal output winding be connected to described sine bucking coil with
Between described first variable resistance, the other end of described sinusoidal output winding and described first variable-resistance adjustable side are as two
Individual sine outfan；Described cosine bucking coil and the second fixed resistance and the second adjustable resistance head and the tail sequential concatenation composition
Second concatenation loop；Described cosine export winding one end be connected to described cosine bucking coil and described the second adjustable resistance it
Between, described cosine exports the other end of winding and the adjustable side of described the second adjustable resistance as two cosine outfans；Described
Stator core and rotor core all laminate rear linear cutter molding using the rotation of fe-Ni soft magnetic alloy b1j95 sheet stock, and work as
After assembling puts in place, described rotor core is located in the internal ring of described stator core together with described rotor bushing, and described turn
There is air gap between sub- iron core and described stator core.
Preferably, described rotor bushing includes being linked in sequence and inner chamber communicates with each other the first cylindrical portion, the second cylindrical portion,
And flange part, the external diameter of described first cylindrical portion, the second cylindrical portion and flange part is gradually increased, described second cylindrical portion
The roof of described first cylindrical portion of connection on be provided with multiple screwed holes, and multiple screwed hole is round described first cylinder
Portion is uniformly distributed；Described rotor core suit is fixed on the excircle of described second cylindrical portion, and described rotor core
Lower surface is resisted against on described flange part.
Preferably, the quantity of the stator tooth on described stator core is two of the rotor tooth quantity on described rotor core
Times.
Present invention advantage compared with prior art is:
1st, in the present invention, because the fe-Ni soft magnetic alloy b1j95 material using high permeability makes stator core, rotor
Iron core, compared with traditional silicon steel material, improves the pcrmeability of medium frequency section, produces the excitatory electricity needed for air-gap field intensity
Stream reduces, and reduces power attenuation, exciting curent is reduced to 80～100ma, therefore lower power consumption from 120 original～150ma.
Iron core thickness is reduced to 5～6mm from 8 original～10mm.Product axial dimension reduces；
2nd, stator core and rotor core are overrided to form using sheet stock rotation, and by linear cutter stator core and turn
The teeth groove of sub- iron core, compares punch die punching, then the mode being laminated by hand with mould, in the present invention, the precision of teeth groove is improved；
3rd, combine sine and cosine bucking coil, the output voltage amplitude aligning cosine coil carries out the error of zero and quadrature error
Compensate, the precision of magneto resistive angular sensor brings up to less than 1 ' from original 2 '.While volume-diminished, improve product
Precision.
Brief description
Fig. 1 is the axial, cross-sectional view according to the low-power consumption magneto resistive angular sensor with compensating for the present invention；
Fig. 2 be according to the magnetizing coil of the present invention, sinusoidal output winding, cosine output winding, sinusoidal bucking coil and
The connection diagram of cosine bucking coil；
Fig. 3 is the front view of the stator core according to the present invention；
Fig. 4 is the front view of the rotor core according to the present invention；
Fig. 5 is the coiling expanded view of the stator core according to the present invention and each coil；
Fig. 6 is the structural representation of the rotor bushing according to the present invention.
Specific embodiment
Below in conjunction with the drawings and specific embodiments to according to the low-watt consumption magnetic resistive angle sensor with compensating for the present invention
Device is further described in detail.
As shown in figs 1 to 6, include stator case 1, stator core 2, swash according to the magneto resistive angular sensor of the present invention
Magnetic coil 3, sinusoidal output winding 4, cosine output winding 5, sinusoidal bucking coil 6, cosine bucking coil 7, rotor bushing 8, with
And rotor core 9.Wherein, stator case 1 is substantially circular cross section (as shown in figure 1, according to actual needs, can be in annular one end
One inwardly projecting boss is set, so that positioning in stator case internal ring for the stator core).Stator core 2 is in substantially ring
Shape, its internal ring wall is equably provided with multiple stator tooths (being teeth groove between adjacent teeth).Stator core 2 setting-in is fixed on stator
On the internal ring wall of housing 1.Usually, using the mode such as bonding, welding, stator core 2 can be fixed on the internal ring of stator case 1
On wall.
Rotor core 9 is also annular, and its external annulus is provided with multiple rotor tooths.Generally, the stator tooth on stator core 2
Quantity be rotor core on rotor tooth quantity 2nTimes, n is natural number.In the preferred embodiment, n takes 1.
Rotor bushing 8 is the revolution body structure with middle cavity.Rotor core 9 suit is fixed on the outer of rotor bushing 8
On circumference.Usually, using the mode such as bonding, welding, rotor core 9 can be fixed on the excircle of rotor bushing 8.
The structure of rotor bushing 8 is determined according to the axle of measuring angle to be measured or the structure of miscellaneous part.As shown in Figure 6 excellent
Select in embodiment, the first cylindrical portion 81 that rotor bushing 8 includes being linked in sequence and inner chamber communicates with each other, the second cylindrical portion 82, with
And flange part 83.Wherein, the external diameter of the first cylindrical portion 81, the second cylindrical portion 82 and flange part 83 is gradually increased.Second cylinder
It is provided with multiple screwed holes 821 on the roof of connection the first cylindrical portion 81 in portion 82, and multiple screwed hole 821 is round first
Cylindrical portion 81 is uniformly distributed.The purpose arranging these screwed holes is the installation on axle for the ease of rotor bushing 8.Rotor core
9 suits are fixed on the excircle of the second cylindrical portion 82, and the lower surface of rotor core 9 is resisted against on flange part 83.
Stator core 2 all laminates rear linear cutter using the rotation of fe-Ni soft magnetic alloy b1j95 sheet stock with rotor core 9 and becomes
Type.Specifically, the material of stator core 2 and rotor core 9 is fe-Ni soft magnetic alloy b1j95.After assembling puts in place, rotor ferrum
Core 9 is located in the internal ring of stator core 2 together with rotor bushing 8, and there is air gap between rotor core 9 and stator core 2.
The size of this air gap determines according to the requirement of actual condition.
Fe-Ni soft magnetic alloy b1j95 the initial segment pcrmeability under 2khz～10khz frequency is better than silicon steel material, and it initiates
Magnetic permeability μ0>=0.037h/m, reaches identical fan-out capability, required exciting curent reduction, the thickness of stator core 2 and rotor ferrum
The thickness of core 9 also scaled-back.Pass through the tooth of linear cutter stator core 2 and rotor core 9 again after sheet stock rotation is laminated
Groove, so that the precision of teeth groove is improved, can save stator core 2 inner circle and the cylindrical mill manufacturing procedure of rotor core 9, in side
Just, while manufacture, effectively reduce the volume of angular transducer, improve the precision of sensor.
The principle of such scheme is: fe-Ni soft magnetic alloy b1j95 compares stalloy, have intermediate frequency the initial segment pcrmeability high,
It is difficult the advantage got rusty.With respect to general iron-nickel alloy material, there is hardness height, the stable advantage of magnetic property.In magnetic structure
Under the conditions of magnetizing coil number of turn identical, obtaining identical air gap flux density then needs less excitatory electricity compared with silicon steel material
Stream.Because Mid Frequency pcrmeability is high, fan-out capability can be improved by improving magnet excitation frequency.So stator ferrum is done using b1j95
Core and rotor core material effectively can reduce exciting curent under conditions of not reducing fan-out capability, reduce iron core thickness, reduce
Volume.
In conjunction with shown in Fig. 2 and Fig. 5, magnetizing coil 3, sinusoidal output winding 4, cosine output winding 5, sinusoidal compensative winding 6,
Cosine compensative winding 7 is sequentially successively wound on each tooth of stator core 2.Wherein, magnetizing coil 3 is as excitation coil,
Receive the pumping signal of outside input.Sinusoidal bucking coil 6 is suitable with the first fixed resistance r1 and the first variable resistance r2 head and the tail
Sequence composes in series the first concatenation loop；One end of sinusoidal output winding 4 is connected to sinusoidal bucking coil 6 and the first variable resistance r2
Between, the sinusoidal other end of winding 4 and the adjustable side of the first variable resistance r2 of exporting is as two sinusoidal outfans.Cosine compensates
Coil 7 concatenates loop with the second fixed resistance r3 and the second adjustable resistance r4 head and the tail sequential concatenation composition second.Cosine exports
One end of winding 5 is connected between cosine bucking coil 7 and the second adjustable resistance r4, and cosine exports the other end and the of winding 5
The adjustable side of two variable resistance r4 is as two cosine outfans.
So, after by Fig. 2 wiring, by adjusting the first variable resistance r2, the error of zero of sensor can be made minimum, adjust
Whole the second adjustable resistance r4 is so that the quadrature error of sensor is minimum.
The principle of such scheme is: by adjusting adjustable resistance, sinusoidal bucking coil and cosine bucking coil seal in sine
Output winding and cosine output winding, are equivalent to and are superimposed stationary component in sinusoidal output and cosine output potential, when superposition
When the stationary component that stationary component is brought with the distribution capacity in output winding offsets, the error of zero and quadrature error reach
Little, sensor accuracy now is optimal.
Here, it should be noted that the content not described in detail in this specification, being those skilled in the art by this theory
Description in bright book and prior art are capable of, and therefore, do not repeat.
The foregoing is only the preferred embodiments of the present invention, be not used for limiting the scope of the invention.For ability
For the technical staff in domain, on the premise of not paying creative work, some modifications and replacement can be made to the present invention,
All such modifications and replacement all should be included within the scope of the present invention.
Claims (3)
1. a kind of low-power consumption magneto resistive angular sensor with compensating is it is characterised in that include stator case (1), stator core
(2), magnetizing coil (3), sinusoidal output winding (4), cosine output winding (5), sinusoidal bucking coil (6), cosine bucking coil
(7), rotor bushing (8) and rotor core (9), wherein,
Described stator case (1) is substantially circular cross section；
Described stator core (2) substantially ringwise, its internal ring wall is equably provided with multiple stator tooths, described stator core
(2) setting-in is fixed on the internal ring wall of described stator case (1)；
Described rotor core (9) is annular, and its external annulus is provided with multiple rotor tooths；
Described rotor bushing (8) is the revolution body structure with middle cavity, and described rotor core (9) suit is fixed on described turning
On the excircle of sub- bushing (8)；
Described magnetizing coil (3), sinusoidal output winding (4), cosine output winding (5), sinusoidal bucking coil (6), cosine compensate
Coil (7) is sequentially successively wound on each stator tooth of described stator core (2), and, described magnetizing coil (3) as
Excitation coil, receives the pumping signal of outside input；Described sine bucking coil (6) and the first fixed resistance (r1), Yi Ji
One variable resistance (r2) head and the tail sequential concatenation composition the first concatenation loop；One end of described sine output winding (4) is connected to institute
State between sinusoidal bucking coil (6) and described first variable resistance (r2), described sine output winding (4) the other end with described
The adjustable side of the first variable resistance (r2) is as two sinusoidal outfans；Described cosine bucking coil (7) and the second fixed resistance
(r3) and the second adjustable resistance (r4) head and the tail sequential concatenation composition second concatenation loop；The one of described cosine output winding (5)
End be connected between described cosine bucking coil (7) and described the second adjustable resistance (r4), described cosine output winding (5) another
The adjustable side of one end and described the second adjustable resistance (r4) is as two cosine outfans；
Described stator core (2) and rotor core (9) all laminate rear wire cutting using the rotation of fe-Ni soft magnetic alloy b1j95 sheet stock and add
Work molding, and after assembling puts in place, described rotor core (9) is located at described stator core together with described rotor bushing (8)
(2) in internal ring, and there is air gap between described rotor core (9) and described stator core (2).
2. according to claim 1 with compensate low-power consumption magneto resistive angular sensor it is characterised in that
The first cylindrical portion (81) that described rotor bushing (8) includes being linked in sequence and inner chamber communicates with each other, the second cylindrical portion (82),
And flange part (83), the external diameter of described first cylindrical portion (81), the second cylindrical portion (82) and flange part (83) gradually increases
Greatly, on the roof of described first cylindrical portion of connection (81) of described second cylindrical portion (82), described second cylindrical portion (82) sets
It is equipped with multiple screwed holes (821), and multiple screwed hole (821) is uniformly distributed round described first cylindrical portion (81)；
Described rotor core (9) suit is fixed on the excircle of described second cylindrical portion (82), and described rotor core (9)
Lower surface be resisted against on described flange part (83).
3. the low-power consumption magneto resistive angular sensor with compensating according to claim 1 is it is characterised in that described stator ferrum
The quantity of the stator tooth on core (2) is the twice of the rotor tooth quantity on described rotor core (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399834.4A CN104154857B (en) | 2014-08-13 | 2014-08-13 | Low-power magneto-resistive angle sensor with compensation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399834.4A CN104154857B (en) | 2014-08-13 | 2014-08-13 | Low-power magneto-resistive angle sensor with compensation |
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| CN104154857A CN104154857A (en) | 2014-11-19 |
| CN104154857B true CN104154857B (en) | 2017-01-18 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106847476B (en) * | 2017-03-24 | 2019-03-05 | 深圳市德西机电有限责任公司 | VR Two Speed Resolver |
| CN117439285B (en) * | 2023-12-21 | 2024-03-01 | 江苏巧思科技有限公司 | Magnetic core integrated rotary transformer, wireless power transmission system and design method |
| CN117470281B (en) * | 2023-12-27 | 2024-04-09 | 峰岹科技(深圳)股份有限公司 | Electromagnetic structure for angle sensor and angle sensor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201331328Y (en) * | 2008-12-26 | 2009-10-21 | 中国船舶重工集团公司第七○七研究所 | Barrel-shaped movable coil angle sensor |
| CN103414376A (en) * | 2013-07-25 | 2013-11-27 | 北京航天控制仪器研究所 | Internally-arranged angle sensor all-in-one ultrasonic motor servo control system |
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2014
- 2014-08-13 CN CN201410399834.4A patent/CN104154857B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201331328Y (en) * | 2008-12-26 | 2009-10-21 | 中国船舶重工集团公司第七○七研究所 | Barrel-shaped movable coil angle sensor |
| CN103414376A (en) * | 2013-07-25 | 2013-11-27 | 北京航天控制仪器研究所 | Internally-arranged angle sensor all-in-one ultrasonic motor servo control system |
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Effective date of registration: 20221012 Address after: Room 411, 4th floor, building 3, yard 7, Shixing street, Shijingshan District, Beijing 100043 Patentee after: Beijing Aerospace Wanrun High Tech Co.,Ltd. Address before: 142 box 403, box 100854, Beijing, Beijing, Haidian District Patentee before: BEIJIGN INSTITUTE OF AEROSPACE CONTROL DEVICES |
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