CN101521102B - Rotary transformer with relatively small output common ground error - Google Patents
Rotary transformer with relatively small output common ground error Download PDFInfo
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- CN101521102B CN101521102B CN200810153345.5A CN200810153345A CN101521102B CN 101521102 B CN101521102 B CN 101521102B CN 200810153345 A CN200810153345 A CN 200810153345A CN 101521102 B CN101521102 B CN 101521102B
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Abstract
The invention relates to a rotary transformer with relatively small output common ground error, which is composed of a stator and a rotor and exists in two structural forms, namely, segmental type andintegral type. The stator comprises a stator case, a stator iron core and a stator winding wound thereon, and the rotor comprises a rotor shaft sleeve, a rotor iron core and a rotor winding wound the reon, wherein two phase windings of the rotor winding and/or stator winding are all formed by the alternate arrangement of a circular coil assembly and a concentric coil assembly; and the circular coil assembly and the concentric coil assembly under the two poles of the two phase windings are both symmetrically arranged. The capacitance of the rotary transformer is greatly reduced due to the alternative distribution of the output windings, and the output common ground quadrature error and null voltage are also greatly reduced, thus lowering the system angle measurement error, improving the system precision, and simultaneously widening the excitation frequency application range of the rotary transformer, satisfying the application requirements of certain special systems on high excitation frequency and small output common ground error of the rotary transformer.
Description
Technical field
The invention belongs to resolver field, particularly a kind of resolver with relatively small output common ground error.
Background technology
The effect of resolver in angle measuring system has been angle mould conversion, and mechanical angle is transformed into electric phase mode analog signal or amplitude analog signal, then through phase demodulation or amplitude discrimination, records input angle.As completed the measurement of hull pitching, rolling, orientation angle changing together with inductosyn in inertial navigation system.Resolver is a kind of inductive element, according to the principle of magnetic Field Coupling, when resolver adopts former side or the compensation of pair side, output voltage should be sine and cosine relation with respect to former side's angle in strict accordance with pair side, but between each winding, there is distributed capacitance, thereby in fact between winding, also have field coupled.When output winding is not altogether time, distribute alternately electric capacity cannot and output winding between form loop, thereby little to the interference of output voltage signal.But, due to the at present specific (special) requirements (as reduced by a tie line, to reduce complex circuit degree) of measuring system, need to by the two-phase low side short circuit of resolver output and with system " " be connected.But thus, the output winding electric capacity that distributes alternately can cause very large impact to components accuracy.Its former because: when output winding is altogether time, distribute alternately electric capacity by " " and output form loop between winding, loop current will produce pressure drop in the reactance at output winding, thereby cause the space phase of output end voltage to be offset, form angular error, caused resolver quadrature error to become large; Coincidence circuit electric current also will produce pressure drop on output winding resistance, thereby also just cause null position voltage increase; Particularly excitation power supply frequency higher (more than 4kHz) in the situation that, quadrature error when quadrature error during output common ground is far longer than not altogether, the system angle error of causing increases greatly, even can not complete angle measurement function.
Existing resolver exists one of reason of above drawback to be: its rotor all adopts Concentrical winding, the proportional relation of sine of the electrical degree of umber of turn and place groove number, end winding is crossed over corresponding slot distance along iron core circumference, and with the coil of another phase winding in end portions cross, from resolver axis, coil turn is more away from more, the distance of crossing over is also just far away, also just more with another phase winding in end portions cross, area between conductor is also just larger, therefore the electric capacity that distributes alternately is larger, the distributed capacitance that those coils from axis away from form accounts for major part.At present, the resolver that not yet discovery can address the above problem.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of winding electric capacity that distributes alternately that reduces to export is provided, thereby the quadrature error while reducing resolver output common ground and null position voltage, particularly reduce the quadrature error of resolver in the excitatory situation of upper frequency (more than 4kHz) and the resolver of null position voltage.
The present invention solves its technical problem and takes following technical scheme to realize:
A kind of resolver with relatively small output common ground error, by stator and rotor, formed, stator is by stator cage, stator core and stator winding wound on it form, rotor is by rotor axle sleeve, rotor core and rotor winding wound on it form, this stator winding and rotor winding are two phase windings of electric upper quadrature, this two phase winding forms by the coil groups Opposite direction connection under the two poles of the earth, it is characterized in that: rotor winding or/and two phase windings of stator winding by loop coil group and ceoncentrically wound coil group, alternately arrange and form, loop coil group under the two poles of the earth of two phase windings and ceoncentrically wound coil group are and are arranged symmetrically with.
And described loop coil group is for forming along axial continuous winding one group rotor or stator core slot in rotor or stator core.
And described loop coil group is wound in mechanical clearance place reserved between rotor core and rotor axle sleeve or between stator core and stator cage.
And, described rotor winding or/and stator winding by three types or the coiling of above pachydermia enamelled wire, formed.
And described rotor winding is or/and the longitudinal end that the neighboring concentric coil groups of two phase windings of stator winding intersects at it wiring separately.
And described rotor winding is or/and the mutually stacked loop coil group of stator winding and ceoncentrically wound coil group wiring separately.
Advantage of the present invention and good effect are:
1. by rotor winding, or/and stator winding is from axis, the concentric coil group away from changes loop coil group into this resolver, this loop coil group for to be entwined vertically in rotor or stator core slot, because the end winding of this loop coil group is no longer crossed over rotor core or stator core end face larger distance, two phase coils all carried out capacitive coupling originally in end and groove, after changing mixing type winding into, two phase coil major parts are carried out capacitive coupling in groove, end is less, therefore between two phase windings, the pole-face of distributed capacitance is long-pending reduces greatly, thereby reduce the winding electric capacity that distributes alternately, and then reach the object that reduces output common ground error.
2. this resolver rotor winding is or/and stator winding enamelled wire adopts three types or above pachydermia enamelled wire, because enamelled wire is comprised of coat of paint and bare wire, between line, also there is impregnating varnish or encapsulating, coat of paint and impregnating varnish (or encapsulating) have just formed distributed capacitance contrasted between solid dielectric, the thickness of coat of paint and the thickness of impregnating varnish are exactly distributed capacitance anode-cathode distance, therefore increasing wire enamel skin thickness just can increase the distance between two conductors that belong to two phase windings, increase distributed capacitance anode-cathode distance, thereby further reduce distributed capacitance, thereby reduce resolver output common ground error.
In this resolver using the longitudinal end that the rotor winding of institute's coiling or the neighboring concentric coil groups of stator winding intersect at it on the output rotor on limit or stator wiring separately, and by mutually stacked loop coil group and ceoncentrically wound coil group wiring separately, can greatly reduce the quantity of adjacent conductor between two phase windings, thereby it is long-pending to reduce distributed capacitance pole-face, and then reduce the distributed capacitance that two phase windings form in end.
4. the present invention exports the winding electric capacity that distributes alternately and greatly reduces, output common ground quadrature error and null position voltage also just reduce greatly, thereby can reduce system angle error, improve system accuracy, widen the scope of application of rotating transformer exciting frequency simultaneously, meet the instructions for use that some special system is high to rotating transformer exciting frequency, output common ground error is little.
Accompanying drawing explanation
Fig. 1 is the structural representation of resolver of the present invention;
Fig. 2 is the left view (broken section) of Fig. 1;
Fig. 3 is resolver rotor of the present invention (output limit) winding line schematic diagram;
Fig. 4 is resolver rotor of the present invention (output limit) winding binding wire structure schematic diagram;
Fig. 5 is that the C-C of Fig. 4 is to revolved sectional view.
Embodiment
Below in conjunction with accompanying drawing, by specific embodiment, the invention will be further described.Following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A resolver with relatively small output common ground error, consists of stator 2 and rotor 1, and its mounting structure is separately loading or integral type.Stator consists of stator cage 11, stator core 16 and stator winding 23 wound on it, and rotor consists of rotor axle sleeve 12, rotor core 15 and rotor winding 22 wound on it.Stator winding and rotor winding are A, B two phase windings of electric upper quadrature, and this two phase winding forms by the coil groups Opposite direction connection under the two poles of the earth, the proportional relation of sine of the electrical degree of umber of turn and place groove number.
The innovation of this resolver is: as shown in Figure 1,5, two phase windings of rotor winding alternately arrange and form by loop coil group 25 and ceoncentrically wound coil group 24, and the loop coil group under the two poles of the earth of two phase windings and ceoncentrically wound coil group are and are arranged symmetrically with.Loop coil group is for forming along axial continuous winding one group rotor iron core slot in rotor core.Its technique for coiling is: line graph as shown in Figure 3, the concentric coil group 6 of rotor A phase winding 17 from installing on institute's respective rotor axle sleeve made two boss 14 center positions start coiling, coiling has been boss place and has been started coiling loop coil group 7.From coiling, 180 ° of point symmetries start another coil groups under extremely of coiling, adopt equally the mode of coiling loop coil group after first coiling concentric coil group, and after two groups of coil groups coilings under the two poles of the earth well, reverse link forms rotor A phase winding.Another phase winding is B phase winding 20 and the electric upper quadrature of A phase winding, from winding A coiling starting point, cross 90 ° and start coiling, first coiling B phase ceoncentrically wound coil group 8, coiling has been boss place and has been started coiling loop coil group 4,180 ° of B phase coiling starting points locate to start another coil groups under extremely of coiling, also be first coiling ceoncentrically wound coil group, rear coiling loop coil group, after the coil groups coiling under the two poles of the earth well, reverse link forms rotor B phase winding.After rotor A, B two-phase winding technique complete, shaping is carried out in its end and embedded coil, then pack in rotor axle sleeve, between rotor axle sleeve and rotor core, remain in advance the mechanical clearance 13 of coiling loop coil group.Rotor winding is formed by three types or the coiling of above pachydermia enamelled wire.
Owing to belonging to the winding overhang of each phase, separate wiring, can greatly reduce the quantity of adjacent conductor between two phase windings, thereby it is long-pending to reduce distributed capacitance pole-face, reduce the distributed capacitance that two phase windings form in end, therefore this resolver adopts in corresponding four lug boss position, and the longitudinal end that the neighboring concentric coil groups of rotor A phase winding, B phase winding intersects at it is separately carried out wiring separately; Region between two boss, the ceoncentrically wound coil group of the rotor A phase winding of minute two-layer layout is separated separately and carried out wiring with the loop coil group that belongs to rotor B phase winding, the concentric coil group that belongs to rotor B phase winding is also separated separately and carried out wiring with the loop coil group that belongs to rotor A phase winding, as shown in Fig. 1,4,5.A phase winding wiring label is that 18, B phase winding wiring label is 19.In addition, because degree of tightness, the wiring interval of coil groups at end wiring also has a certain impact to distributed capacitance.Wiring is tighter, interval is less, is equivalent to distributed capacitance anode-cathode distance less, and distributed capacitance is larger.Therefore to select suitable tightness and wiring interval during wiring, guarantee that coil fixes, not scatter, but unsuitable tension, end and axial dimension meet the demands.After winding technique, available dipping lacquer or encapsulating mode are fixed again to coil.
The resolver of the present invention output winding electric capacity that distributes alternately reduces greatly, output common ground quadrature error and null position voltage also just reduce greatly, even can be reduced to output not the level of quadrature error and null position voltage altogether time (there is not quadrature error and null position voltage altogether time in output yet, mainly structure and the manufacturability error of resolver), can ignore the impact of electric capacity on resolver output common ground error that distribute alternately, thereby reduce system angle error, improve system accuracy.Meanwhile, owing to reducing the electric capacity that distributes alternately, can widen the scope of application of rotating transformer exciting frequency, meet the instructions for use that some special system is high to rotating transformer exciting frequency, output common ground error is little.
It should be noted that: generally, the stator of resolver excitatory (input), rotor output is as output limit.Also can adopt rotor excitatory, the mode of stator output now can be implemented technique scheme, with A phase ceoncentrically wound coil group 3, A phase loop coil group 10, B phase ceoncentrically wound coil group 9, the B phase loop coil group 5 of the same manner coiling stator winding on stator.Excitatory when rotor, when stator is output limit, between stator cage and stator core, leave mechanical clearance 21 for coiling Circular Winding, on stator cage, leave four boss for stator core is installed, embodiment and said process are similar, do not repeat them here.Certainly, also can on stator and rotor, implement technique scheme, there is the effect of better reduction output common ground error simultaneously.
Claims (5)
1. a resolver with relatively small output common ground error, by stator and rotor, formed, stator is by stator cage, stator core and stator winding wound on it form, rotor is by rotor axle sleeve, rotor core and rotor winding wound on it form, this stator winding and rotor winding are two phase windings of electric upper quadrature, this two phase winding forms by the coil groups Opposite direction connection under two magnetic poles, it is characterized in that: rotor winding or/and two phase windings of stator winding by loop coil group and ceoncentrically wound coil group, alternately arrange and form, loop coil group under two magnetic poles of two phase windings and ceoncentrically wound coil group are and are arranged symmetrically with, rotor winding or/and the technique for coiling of stator winding be: the ceoncentrically wound coil group of rotor A phase winding from installing on institute's respective rotor axle sleeve made two boss center positions start coiling, coiling has been boss place and has been started coiling loop coil group, 180 ° of coil groups that start under another magnetic pole of coiling of point symmetry from coiling, the mode of coiling loop coil group after the first coiling ceoncentrically wound coil group of same employing, after two groups of coil groups coilings under two magnetic poles well, reverse link forms rotor A phase winding, the electric upper quadrature of B phase winding and A phase winding, from winding A coiling starting point, cross 90 ° and start coiling, first coiling B phase ceoncentrically wound coil group (8), coiling has been boss place and has been started coiling loop coil group (4), 180 ° of B phase coiling starting points locate to start another coil groups under extremely of coiling, also be first coiling ceoncentrically wound coil group, rear coiling loop coil group, after coil groups coiling under two magnetic poles well, reverse link forms rotor B phase winding, and loop coil group is for to form along axial continuous winding one group rotor iron core slot or stator core slot in rotor core or stator core.
2. the resolver with relatively small output common ground error according to claim 1, is characterized in that: described loop coil group is wound in mechanical clearance place reserved between rotor core and rotor axle sleeve or between stator core and stator cage.
3. the resolver with relatively small output common ground error according to claim 1, is characterized in that: described rotor winding or/and stator winding by three type pachydermia enamelled wire coilings, formed.
4. the resolver with relatively small output common ground error according to claim 1, is characterized in that: described rotor winding is or/and the longitudinal end that the neighboring concentric coil groups of two phase windings of stator winding intersects at it wiring separately.
5. the resolver with relatively small output common ground error according to claim 4, is characterized in that: described rotor winding or/and the loop coil group of stator winding with its mutually stacked ceoncentrically wound coil group wiring separately.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810153345.5A CN101521102B (en) | 2008-11-25 | 2008-11-25 | Rotary transformer with relatively small output common ground error |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810153345.5A CN101521102B (en) | 2008-11-25 | 2008-11-25 | Rotary transformer with relatively small output common ground error |
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| CN101521102A CN101521102A (en) | 2009-09-02 |
| CN101521102B true CN101521102B (en) | 2014-03-26 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042801B (en) * | 2010-08-16 | 2012-03-28 | 葛幸华 | Electromagnetic angle sensor of spiral coils of mirroring cylindrical surfaces |
| CN102403934A (en) * | 2011-08-16 | 2012-04-04 | 深圳市安托山特种机械有限公司 | Voltage signal rotation sensor of dual-redundancy permanent magnet power frequency brushless synchronous generator |
| CN104200968B (en) * | 2014-09-17 | 2016-05-04 | 哈尔滨工业大学 | Harmonic wave eliminating formula axial magnetic circuit multipolar resolver and signal winding method for winding |
| CN106504870B (en) * | 2016-10-25 | 2018-01-30 | 南京航空航天大学 | The non-contact slip ring of radial direction multichannel of vice-side winding distribution coiling |
| CN107504984A (en) * | 2017-08-25 | 2017-12-22 | 上海岭先机器人科技股份有限公司 | Magnet ring, the magnet ring of magnetic encoder magnetize and reading device and magnetic encoder |
| CN110031025B (en) * | 2019-04-19 | 2024-05-03 | 武汉蔚铭自控科技有限公司 | Digital output split charging rotary transformer |
| 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 |
|---|---|---|---|---|
| CN1062334C (en) * | 1994-08-18 | 2001-02-21 | 美国西门子汽车公司 | Angled terminal/coil designed for small diameter fuel injector |
| CN1320568C (en) * | 2002-01-30 | 2007-06-06 | 艾劳埃斯·乌本 | Transformer device |
-
2008
- 2008-11-25 CN CN200810153345.5A patent/CN101521102B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062334C (en) * | 1994-08-18 | 2001-02-21 | 美国西门子汽车公司 | Angled terminal/coil designed for small diameter fuel injector |
| CN1320568C (en) * | 2002-01-30 | 2007-06-06 | 艾劳埃斯·乌本 | Transformer device |
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| CN101521102A (en) | 2009-09-02 |
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