CN204514270U - Birotor reluctance type angle level sensor - Google Patents
Birotor reluctance type angle level sensor Download PDFInfo
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- CN204514270U CN204514270U CN201520158368.0U CN201520158368U CN204514270U CN 204514270 U CN204514270 U CN 204514270U CN 201520158368 U CN201520158368 U CN 201520158368U CN 204514270 U CN204514270 U CN 204514270U
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Abstract
The utility model discloses a kind of birotor reluctance type angle level sensor, comprise internal rotor, stator and outer rotor, the external stator part that stator comprises magnetism-isolating loop, is arranged at the inner stator on magnetism-isolating loop inwall and is arranged on magnetism-isolating loop outer wall, the both sides of magnetism-isolating loop are provided with groove, external stator part and inner stator are provided with raised line, uniformly on inner stator be provided with the first stator tooth, external stator part be provided with the second stator tooth.The utility model, owing to having inside and outside two cover stator and rotor combinations, is applicable to birotor servo drive motor system, can simplied system structure greatly, increases the useful space of motor, has that structure is simple, high reliability.By changing the number of teeth on stator, can obtain number of pole-pairs is different angle level sensors, is suitable for the servo electrical machinery system of different number of pole-pairs, also has advantage easy for installation, to be applicable to batch machining production.
Description
Technical field
The utility model relates to a kind of reluctance type angle level sensor, particularly relates to a kind of birotor reluctance type angle level sensor.
Background technology
Because double-rotor machine can make full use of the inner space of motor, compare traditional single stators and rotators motor, physical size and the weight of motor can be reduced to a great extent, not only drastically increase power density and the torque density of motor, reduce cost, and inside and outside motor has independently stator winding, both can series operation also can isolated operation, by reasonably switching the connected mode of inside and outside stator winding, motor can be made to meet the performance requirement of electric automobile low speed high torque and the little torque of high speed well.Be widely used in hybrid power system, wind generator system and high thrust, high reliability drive system field.Inherently very complicated for inner structure double rotor BLDC motor, whole electric system then can be made more complicated as two angle level sensors need be installed again, give design, manufacture, install and maintenance brings very large difficulty.
Summary of the invention
The utility model is intended to solve above-mentioned mentioned technical matters, provides a kind of birotor reluctance type angle level sensor being mainly used in birotor servo drive motor rotor-position and detecting.
The utility model is realized by following technical scheme:
Birotor reluctance type angle level sensor, comprise internal rotor, stator and outer rotor, the first sinusoidal air gap is provided with between internal rotor and stator, the second sinusoidal air gap is provided with between stator and outer rotor, described stator comprises magnetism-isolating loop, the external stator part being arranged at the inner stator on magnetism-isolating loop inwall and being arranged on magnetism-isolating loop outer wall, the both sides of described magnetism-isolating loop are provided with restriction inner stator and external stator part groove in relative rotation, external stator part and inner stator are provided with the raised line with fit depressions, uniformly in the circumference of described inner stator be provided with several the first stator tooths, first stator tooth is provided with First Line ring framework, First Line ring framework is provided with the first field winding, the below of the first field winding is provided with the first cosine and exports winding or the first sinusoidal output winding, first cosine exports winding and exports winding with the first sine and be separated by and arrange, the inner periphery of external stator part is provided with several and the first stator tooth the second stator tooth one to one, second stator tooth is provided with the second coil rack, second coil rack is provided with the second field winding, the below of the second field winding is provided with the second cosine and exports winding or the second sinusoidal output winding, second cosine exports winding and exports winding with the second sine and be separated by and arrange.
Preferably, the number of described first stator tooth is even number, and is more than or equal to 4.
Preferably, the circumferential outline of external stator part and the circumferential Internal periphery of inner stator are all in eccentric round shape, and the circumferential outline of external stator part increases with the offset increase of the circumferential Internal periphery of inner stator and reduces with the offset minimizing of the circumferential Internal periphery of inner stator.
Preferably, the circumferential Internal periphery of described inner stator is provided with the first projection of some uniform settings, the circumferential outline of external stator part is provided with the second projection of some uniform settings, first xsect that is protruding and the second projection all extends in arc-shaped and along the axis direction of rotor, second protruding correspondence first is protruding to be arranged, and the thickness of the second projection increases with the thickness increase of the first projection and reduces with the thickness minimizing of the first projection.
Preferably, also comprise the rotating shaft socket-connected with internal rotor and the rotating cylinder socket-connected with outer rotor, described outer rotor is sleeved on the inner chamber of rotating cylinder.
Preferably, described rotating shaft is solid or hollow-core construction.
Preferably, the minimum widith scope of described first sinusoidal air gap or the second sinusoidal air gap is between 0.1 ~ 1mm.
Beneficial effect is: compared with prior art, the stator of birotor reluctance type angle of the present utility model level sensor forms by every magnetic, inner stator and external stator part, inner stator and external stator part combine the structure that greatly can simplify birotor servo drive motor system with internal rotor and outer rotor respectively, increase the useful space of motor to improve output power; Birotor reluctance type angle of the present utility model level sensor numbers of pole-pairs desirable 1,2,3,4 etc., directly can be applicable to the motor driven systems of multiple number of pole-pairs, simplify control system; The rotor rotated due to it does not need to arrange winding, is only made up of iron core, has that structure is simple, high reliability; The winding type of inner stator and external stator part is simple, and on the First Line ring framework that directly can be wound on insulation or the second coil rack, makes processing and manufacturing simple, be very applicable to batch machining.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail, wherein:
Fig. 1 is the cut-open view of birotor reluctance type angle of the present utility model level sensor.
Embodiment
Birotor reluctance type angle level sensor as shown in Figure 1, comprise internal rotor 11, stator and outer rotor 12, the first sinusoidal air gap 31 is provided with between internal rotor 11 and stator, the second sinusoidal air gap 32 is provided with, the external stator part 22 that stator comprises magnetism-isolating loop 20, is arranged at the inner stator 21 on magnetism-isolating loop 20 inwall and is arranged on magnetism-isolating loop 20 outer wall between stator and outer rotor 12.The Main Function of magnetism-isolating loop 20 is that the magnetic field to the first field winding 41 and the second field winding 42 produce is separated, and avoids both to influence each other, to improve the accuracy of detection of birotor reluctance type angle of the present utility model level sensor.The both sides of magnetism-isolating loop 20 are provided with restriction inner stator 21 and external stator part 22 groove 23 in relative rotation, external stator part 22 and inner stator 21 are provided with the raised line matched with groove 23, by coordinating of raised line and groove 23, the relative position of inner stator 21 and external stator part 22 can be fixed.And, uniformly in the circumference of inner stator 21 be provided with several the first stator tooths 51, the number of teeth of the first stator tooth 51 can be 4, also can be 6 ... Deng even number, but the number of teeth of the first stator tooth 51 is more than or equal to 4, first stator tooth 51 is provided with First Line ring framework 61, First Line ring framework 61 is provided with the first field winding 41, the below of the first field winding 41 is provided with the first cosine and exports winding 81 or the first sinusoidal output winding 71, first cosine exports winding 81 and the first sine and exports winding 71 and be separated by and arrange, the inner periphery of external stator part 22 is provided with several and the first stator tooth 51 second stator tooth 52 one to one, second stator tooth 52 is provided with the second coil rack 62, second coil rack 62 is provided with the second field winding 42, the below of the second field winding 42 is provided with the second cosine and exports winding 82 or the second sinusoidal output winding 72, second cosine exports winding 82 and the second sine and exports winding 72 and be separated by and arrange.Above-mentioned setting, is the equal of be provided with inside and outside two cover stator and rotor combinations, greatly simplifies the structure of birotor servo drive motor system, the useful space increasing motor to improve output power, have structure simply, high reliability.In addition, inside and outside two cover stator and rotor combinations also can use as required alone or in combination, have the advantages that applicability is wide.
First stator tooth 51 can be rectangular teeth or round-arced tooth.When the first stator tooth 51 is rectangular teeth, First Line ring framework 61 can be monolithic construction; When the first stator tooth 51 is round-arced tooth, First Line ring framework 61 correspondingly can be arranged to split-type structural so that cover installs on the first stator tooth 51.
First sinusoidal air gap 31 and the second sinusoidal air gap 32 preferably adopt non-uniform gap, and the minimum widith scope of the sinusoidal air gap 32 of the first sinusoidal air gap 31 or the second is at 0.1 ~ 1mm.
First sinusoidal air gap 31 and the second sinusoidal air gap 32 are non-uniform gap, when number of pole-pairs is 1, the quantity of the first stator tooth 51 be more than or equal to 4 even number, correspondingly, the even number of quantity also for being more than or equal to 4 of the second stator tooth 52, the circumferential outline of external stator part 22 and the circumferential Internal periphery of inner stator 21 are all in eccentric round shape, and the circumferential outline of external stator part 22 increases with the offset increase of the circumferential Internal periphery of inner stator 21 and reduces with the offset minimizing of the circumferential Internal periphery of inner stator 21, and when number of pole-pairs is greater than 1, also being number of pole-pairs is 2, 3, 4, 5, 6, Deng time, the quantity of the first stator tooth 51 be greater than 4 even number, the circumferential Internal periphery of inner stator 21 is provided with the first projection 210 of some uniform settings, the circumferential outline of external stator part 22 is provided with the second projection 220 of some uniform settings, the xsect of the first protruding 210 and second projection 220 all extends in arc-shaped and along the axis direction of rotor, second protruding 220 corresponding first protruding 210 is arranged, and the thickness of the second projection 220 increases with the thickness increase of the first projection 210 and reduces with the thickness minimizing of the first projection 210, fixed to reduce inside and outside two covers, the detection error of zero of rotor combination.
Birotor reluctance type angle of the present utility model level sensor also comprises the rotating shaft 91 socket-connected with internal rotor 11 and the rotating cylinder 92 socket-connected with outer rotor 12, and outer rotor 12 is sleeved on the inner chamber of rotating cylinder 92.Also to be on excircle that internal rotor 11 cover installs to rotating shaft 91 and to follow rotating shaft 91 and rotate, and outer rotor 12 is sleeved on the inner chamber of rotating cylinder 92 and follows rotating cylinder 92 and rotate.Rotating shaft 91 and rotating cylinder 92 are independent machine-shaping.Rotating shaft 91 can be solid construction or hollow-core construction.
Above embodiment is only not limited in order to the technical solution of the utility model to be described, all do not depart from the utility model spirit and scope any amendment or equivalently to replace, it all should be encompassed in the scope of technical solutions of the utility model.
Claims (7)
1. birotor reluctance type angle level sensor, comprise internal rotor (11), stator and outer rotor (12), the first sinusoidal air gap (31) is provided with between internal rotor (11) and stator, the second sinusoidal air gap (32) is provided with between stator and outer rotor (12), it is characterized in that, described stator comprises magnetism-isolating loop (20), the external stator part (22) being arranged at the inner stator (21) on magnetism-isolating loop (20) inwall and being arranged on magnetism-isolating loop (20) outer wall, the both sides of described magnetism-isolating loop (20) are provided with restriction inner stator (21) and external stator part (22) groove (23) in relative rotation, external stator part (22) and inner stator (21) are provided with the raised line matched with groove (23), uniformly in the circumference of described inner stator (21) be provided with several the first stator tooths (51), first stator tooth (51) is provided with First Line ring framework (61), First Line ring framework (61) is provided with the first field winding (41), the below of the first field winding (41) is provided with the first cosine and exports winding (81) or the first sinusoidal output winding (71), first cosine exports winding (81) and is separated by arranges with the first sinusoidal winding (71) that exports, the inner periphery of external stator part (22) is provided with several and the first stator tooth (51) the second stator tooth (52) one to one, second stator tooth (52) is provided with the second coil rack (62), second coil rack (62) is provided with the second field winding (42), the below of the second field winding (42) is provided with the second cosine and exports winding (82) or the second sinusoidal output winding (72), second cosine exports winding (82) and is separated by arranges with the second sinusoidal winding (72) that exports.
2. birotor reluctance type angle according to claim 1 level sensor, is characterized in that, the number of described first stator tooth (51) is even number, and is more than or equal to 4.
3. birotor reluctance type angle according to claim 1 level sensor, it is characterized in that, the circumferential outline of external stator part (22) and the circumferential Internal periphery of inner stator (21) are all in eccentric round shape, and the circumferential outline of external stator part (22) increases with the offset increase of the circumferential Internal periphery of inner stator (21) and reduces with the offset minimizing of the circumferential Internal periphery of inner stator (21).
4. birotor reluctance type angle according to claim 1 level sensor, it is characterized in that, the circumferential Internal periphery of described inner stator (21) is provided with first projection (210) of some uniform settings, the circumferential outline of external stator part (22) is provided with second projection (220) of some uniform settings, the xsect of the first projection (210) and the second projection (220) all extends in arc-shaped and along the axis direction of rotor, corresponding first projection (210) of second projection (220) is arranged, and the thickness of the second projection (220) increases with the thickness increase of the first projection (210) and reduces with the thickness minimizing of the first projection (210).
5. birotor reluctance type angle according to claim 1 level sensor, it is characterized in that, also comprise the rotating shaft (91) socket-connected with internal rotor (11) and the rotating cylinder (92) socket-connected with outer rotor (12), described outer rotor (12) is sleeved on the inner chamber of rotating cylinder (92).
6. birotor reluctance type angle according to claim 5 level sensor, is characterized in that, described rotating shaft (91) is solid or hollow-core construction.
7. birotor reluctance type angle according to claim 1 level sensor, is characterized in that, the minimum widith scope of described first sinusoidal air gap (31) or the second sinusoidal air gap (32) is between 0.1 ~ 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520158368.0U CN204514270U (en) | 2015-03-19 | 2015-03-19 | Birotor reluctance type angle level sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520158368.0U CN204514270U (en) | 2015-03-19 | 2015-03-19 | Birotor reluctance type angle level sensor |
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| CN204514270U true CN204514270U (en) | 2015-07-29 |
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| CN201520158368.0U Active CN204514270U (en) | 2015-03-19 | 2015-03-19 | Birotor reluctance type angle level sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341731A (en) * | 2018-11-29 | 2019-02-15 | 重庆大学 | It is a kind of for measuring the sensor of double-rotor machine relative position |
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2015
- 2015-03-19 CN CN201520158368.0U patent/CN204514270U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341731A (en) * | 2018-11-29 | 2019-02-15 | 重庆大学 | It is a kind of for measuring the sensor of double-rotor machine relative position |
| CN109341731B (en) * | 2018-11-29 | 2021-06-18 | 重庆大学 | Sensor for measuring relative position of double-rotor motor |
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