CN104200967A - Hollow rotary transformer - Google Patents
Hollow rotary transformer Download PDFInfo
- Publication number
- CN104200967A CN104200967A CN201410391932.3A CN201410391932A CN104200967A CN 104200967 A CN104200967 A CN 104200967A CN 201410391932 A CN201410391932 A CN 201410391932A CN 104200967 A CN104200967 A CN 104200967A
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- rotor
- stator
- hollow shaft
- hollow
- closed magnetic
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Abstract
The invention discloses a hollow rotary transformer. Stators in two closed magnetic circuits are in clearance fit with a hollow shaft, rotors in the two closed magnetic circuits rotate synchronously with the hollow shaft, and the stators and the rotors in the two closed magnetic circuits are arranged on the hollow shaft in the mode of stator-rotor-rotor-stator. Stator outgoing lines of the stators are connected with an electric connector outside a shell, and rotor outgoing lines of the rotors are connected with an electric connector arranged on the hollow shaft in a sleeved mode. According to the hollow rotary transformer, the stators and the rotors are of a non-contact structure, induction couplers of a traditional transformer are separated, a primary winding and a secondary winding are wound around different magnetic core structures respectively, and therefore non-contact energy coupling between a power supply and a load is achieved. After being electrified, the stators and the rotors generate induced electromotive force through magnetizers and carry out energy coupling through magnetic gaps. Due to the fact that the electromagnetic coupling step is completely enclosed in a rotary cavity, leakage of electromagnetic waves is avoided, and the requirements of electromagnetic environments and electromagnetic compatibility tests in the onboard state can be met.
Description
Technical field
The present invention relates to aircraft brake system field, specifically a kind of hollow resolver.
Background technology
Abroad on modern advanced aircraft, aero tyre pressure monitor system TPMS (Tire Pressure Monitoring System) generally adopts, as: in all multi-models of AIRBUS company, BOEING company and DASSAULT company, comprise that up-to-date A380 aircraft has also assembled system for monitoring pressure in tyre.It is a technology that ensures aircraft safety.System for monitoring pressure in tyre is monitored the air pressure inside of tire, the actual pressure of tire is provided to crew or attendant by data/address bus and display, can be to the low pressure of tire, blow out and carry out alarm, in the time that brake gear temperature exceedes 400 DEG C, open fan and lower the temperature simultaneously.In regular maintenance, this technology reduces brake gear temperature in time, guarantees flight landing safety, shortens the departure time again.This resolver is arranged in aircraft main landing gear axle, for communication and energy transmission between resolver and tire pressure actuator.It is to use permanent magnetic material as driving source that traditional resolver makes resolver, and the stator of transformer is fixed on resolver stator, and rotor is connected with resolver rotor coaxial, keeps relatively static.The stator of transformer is powered by external ac power source, and by transformer action, transformer rotor obtains induced potential, thereby the rotor of supply resolver carries out excitatory.But traditional transformer device structure is shown in Fig. 1, mainly by rotor, stator, composition unshakable in one's determination.Magnetic conductor is made up of permeability magnetic materials such as DT4E, but is limited to the defect of material and structure, and energy transfer efficiency is 40%, can not meet slave computer instructions for use.
Abroad on modern advanced aircraft, the energy, the information transmission that under airborne condition, are rotated under state have obtained very big breakthrough, in all multi-models of AIRBUS, BOEING company, the energy that can realize under rotation status, the system for monitoring pressure in tyre of information transmission technique are equipped with.The analysis just having retrieved, in domestic used scheme, energy transmission efficiency is very limited, and only enough transducer uses, and there is no hollow-core construction design simultaneously.
A kind of resolver has been proposed in the innovation and creation that are 201120496019.1 at number of patent application, this transformer adopting noncontact energy transmission technology carries out energy transmission, but this invention does not provide actual energy transfer efficiency, simultaneously, this invention is solid shafting structure, distinguishes to some extent with the engineering problem that the present invention will solve.
At home, the occasion that needs energy under the state that is rotated, information to transmit under airborne condition is not rarely seen, but what generally adopt is the way of contact such as collector ring, brush.Owing to having contact at transmittance process, the wearing and tearing of electrode, brush are inevitably existed, wearing and tearing and the various hidden danger of bringing due to wearing and tearing become the energy under rotation status, the restriction bottleneck that information is transmitted.
Summary of the invention
For overcoming the deficiency that the energy transfer efficiency that prior art value exists is low, can not meet energy while being rotated state under airborne condition, information transmission needs, the present invention proposes a kind of hollow resolver.
The present invention includes two closed magnetic circuits, housing, pair of bearings, hollow shaft, stator winding resistance and rotor winding resistance, in described each closed magnetic circuit, the magnetic gap of stator and rotor junction is 0.5mm.Pair of bearings is sleeved on hollow shaft.Two described closed magnetic circuits are sleeved on hollow shaft, and between described pair of bearings; Stator in two described closed magnetic circuits and this hollow shaft matched in clearance, the rotor in two described closed magnetic circuits and this hollow shaft synchronous rotary.After two closed magnetic circuits are sleeved on hollow shaft, the stator in described two closed magnetic circuits and rotor mode with stator-rotor-rotor-stator on this hollow shaft are arranged.Housing is sleeved on the external peripheral surface of described two closed magnetic circuits.The stator lead-out wire of the each stator in two closed magnetic circuits is connected with the electric connector being positioned at outside this housing respectively; The rotor leading-out wire of the each rotor in two closed magnetic circuits is connected with the electric connector being sleeved on described hollow shaft respectively.The internal diameter of described hollow shaft is greater than the external diameter of motor shaft, motor shaft can be penetrated to this hollow shaft.
Described two stators are the double Shell of hollow, have formed stator winding mounting groove by the space between described double Shell, for laying stator winding.The annulus end face sealing of described stator one end, the annulus end face of the other end is uncovered.The internal diameter of described two stators is slightly larger than the external diameter of described hollow shaft, and the external diameter of described two stators is all identical with the internal diameter of described housing, makes external peripheral surface and the shell inner surface interference engagement of described two stators.There is annular stator welding groove at the outer rim place of described stator blind end end face, for the inner surface of this stator and housing is welded and fixed.
The rotor of described rotor is also the double Shell of hollow, has formed rotor winding mounting groove by the space between described double Shell, for laying rotor winding.The annulus end face sealing of described rotor one end, the annulus end face of the other end is uncovered.The internal diameter of rotor is identical with the external diameter of described hollow shaft, and makes interference engagement between this rotor and this hollow shaft, and the external diameter of described two rotors is all slightly less than the internal diameter of housing, makes external peripheral surface and the shell inner surface matched in clearance of described two rotors.The hole circle perimeter surface of described rotor bore is evenly equipped with four rotor welding grooves, and this rotor welding groove is along the axial perforation of this rotor, for the inner surface of this rotor and hollow shaft is welded and fixed.
Described stator winding is identical with the number of turn of rotor winding.
The symmetrical stator lead hole that has on the housing wall of described housing one side.In described hollow shaft housing wall, have two rotor leading wire holes, and the aperture in this rotor leading wire hole is all positioned at the external peripheral surface of this hollow shaft.
The present invention has proposed a kind of hollow resolver on prior art basis, and this resolver completes the transmission of energy and signal by electromagnetic coupled, is to pass fan electromotor axle simultaneously, has adopted hollow shaft.And resolver rotor can be rotated by this hollow shaft.
Under the requirement that meets existing installation dimension, for ensureing energy transfer efficiency, stator of the present invention and rotor adopt permalloy material, in the warm area of-55 DEG C～125 DEG C, make the energy transfer efficiency of hollow resolver higher than 90%.
Due to traditional Wound-rotor type resolver or have brush and slip ring, make its exist electromagnetic interference and useful life short, or with coupling transformer, complex structure and manufacturing cost are high, and its application is restricted.Stator of the present invention and rotor adopt contactless structure, and by the induction coupling of traditional transformer separately, armature winding and secondary winding are wound on respectively on different core structures, realize the noncontact Energy Coupling between power supply and load.After energising, between stator and rotor, produce induced electromotive force by magnetic conductor, and carry out Energy Coupling by magnetic gap.
The present invention utilizes resolver coaxial rotating not affect the feature of energy transmission efficiency, has ensured above normal use of turn/min of rotating speed 3000; There is little, the lightweight feature of volume as the hollow shaft of drive disk assembly, in the hollow kinematic axis of not enough 80mm, can realize the stable transfer of signal and power.
For meeting airborne equipment environment and technical performance instructions for use, stator and rotor in the present invention have adopted permalloy.For meeting the requirement of airborne equipment mechanical environment, the present invention by Finite Element the each rank natural frequency to rotor and dynamic characteristic carry out model analysis, analysis result is in table 1.
Table 1 modal analysis result
| Rank number of mode | Natural frequency (Hz) |
| Single order | 7687.1 |
| Second order | 7699.5 |
| Three rank | 11520 |
| Quadravalence | 11548 |
| Five rank | 11960 |
| Six rank | 12125 |
By modal analysis result, the first natural frequency of rotor is 7687.1Hz, second order natural frequency 7699.5Hz, three rank natural frequency 11520Hz.Product is in the time bearing basic impact, and maximum displacement is 5.45 μ m; Product bear pendant hit impact time, maximum displacement is 1.63 μ m; Product is in the time bearing acceleration test, and maximum displacement is 2.47 μ m.Maximum displacement does not affect serviceability.Rotor and stator use material same structure similar, can meet instructions for use.
In the present invention, all affixed by the mode of welding between stator and housing, between rotor and hollow shaft.Described stator and rotor all use permalloy to make, because permalloy permeability is high, more responsive to thermal stress, and stator, rotor and housing and hollow shaft are different materials, in welding, easily crack and pore, for the generation of avoiding this problem is used laser welding.
Traditional transformer core uses silicon steel sheet compacting to form, and energy transmission efficiency is 40%, can not meet slave computer instructions for use, in the present invention, has formed closed magnetic circuit between stator, rotor, magnetic gap.
Magnetic field analysis: use Ansoft finite element analysis to analyze stator, rotor field, hollow resolver selects 0.22mm specification wire as wire resistor, and the wire resistor number of turn is (2200 ± 50) circle as calculated.
Between rotor-stator, be provided with respectively tri-kinds of different magnetic gaps of 0.5mm, 1.0mm and 1.5mm,, assemble and utilization requirement to meet machinery as the magnetic gap between stator and rotor through overtesting final choice 0.5mm.Through actual measurement, the magnetic gap of 0.5mm reaches more than 90%-55 DEG C to 125 DEG C scope self-energy efficiencies of transmission.
Apply U at stator lead-out wire line
1=± 28V voltage, measures input electric current I
1, calculate P according to formula
1=U
1i
1; At output termination R=50 Ω power resistor, measure output voltage U
2, calculate P by formula
2=U
2 2/ R; Computational efficiency η=P
2/ P
1=U
2 2/ (50 × U
1i
1) × 100%.Magnetic gap be 0.5mm test result in table 2, magnetic gap be 1mm test result in table 3, magnetic gap is that 1.5mm test result is in table 4.
Table 2 0.5mm magnetic gap efficiency test result
Table 3 1.0mm magnetic gap efficiency test result
Table 4 1.5mm magnetic gap efficiency test result
In the present invention, electromagnetic coupled link is completely enclosed within rotation cavity, accomplishes that electromagnetic wave is without leakage, can meet the electromagnetic environment requirements under airborne state, meets the requirement of electromagnetic compatibility test.
The present invention has realized fan electromotor axle and has passed from resolver center, guarantees that brake gear lowers the temperature in time, simultaneously by non-contact transmission technique guarantee the demand of the power supply of slave computer tire pressure actuator, communication.
Brief description of the drawings
Fig. 1 is the structural representation of traditional resolver;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the structural representation of stator;
Fig. 4 is the structural representation of rotor;
Fig. 5 is the structural representation of housing;
Fig. 6 is the structural representation of hollow shaft.
In figure:
1. stator; 2. rotor; 3. magnetic gap; 4. stator lead-out wire; 5. housing; 6 bearings; 7. hollow shaft; 8. rotor leading-out wire; 9. stator lead hole; 10. stator winding; 11. rotor windings; 12. rotor leading wire holes; 13. stator welding grooves; 14. rotor welding grooves; 15. end caps.
Embodiment
The present embodiment is a kind of hollow resolver, comprise two closed magnetic circuits, housing 5, pair of bearings 6, hollow shaft 7, stator resistance 10 and rotor resistance 11, described closed magnetic circuit is by a stator 1 and a closed magnetic circulation passage that rotor 2 forms, and in each closed magnetic circuit, the magnetic gap 3 of stator and rotor junction is 0.5mm.Described stator 1 and rotor 2 all adopt permalloy to make.
In the present embodiment: pair of bearings 6 is sleeved on hollow shaft 7.Two described closed magnetic circuits are sleeved on hollow shaft 7, and between described pair of bearings; Stator in two described closed magnetic circuits and this hollow shaft matched in clearance, the rotor in two described closed magnetic circuits and this hollow shaft synchronous rotary.After two closed magnetic circuits are sleeved on hollow shaft, the stator in described two closed magnetic circuits and rotor mode with stator-rotor-rotor-stator on this hollow shaft are arranged.Housing 5 is sleeved on the external peripheral surface of described two closed magnetic circuits.The stator lead-out wire 4 of the each stator in two closed magnetic circuits is connected with the electric connector being positioned at outside this housing respectively; The rotor leading-out wire 8 of the each rotor in two closed magnetic circuits is connected with the electric connector being sleeved on described hollow shaft respectively.The stator lead-out wire 4 of described each stator has the fairlead of end cap 15 one end to draw by being positioned at housing, and the rotor leading-out wire 8 of each rotor is drawn by the other end.
Described stator and rotor obtain after being prior art being improved.
Described stator is the double Shell of hollow, has formed stator winding mounting groove by the space between described double Shell, for laying stator winding 10.The annulus end face sealing of described stator one end, the annulus end face of the other end is uncovered.Described rotor is also the double Shell of hollow, has formed rotor winding mounting groove by the space between described double Shell, for laying rotor winding 11.The annulus end face sealing of described rotor one end, the annulus end face of the other end is uncovered.In the time that a stator is together with a rotor combination, described stator and rotor uncovered relative, has formed a closed magnetic circuit
Described stator winding is identical with the number of turn of rotor winding.In the present embodiment, be 2200 circles, wire diameter is 0.1.
The internal diameter of described two stators is slightly larger than the external diameter of described hollow shaft, and the external diameter of described two stators is all identical with the internal diameter of described housing, makes external peripheral surface and the shell inner surface interference engagement of described two stators.There is annular stator welding groove 13 at the outer rim place of described stator blind end end face, for the inner surface of this stator and housing is fixed by laser welding
The internal diameter of rotor is identical with the external diameter of described hollow shaft, and makes interference engagement between this rotor and this hollow shaft, and the external diameter of described two rotors is all slightly less than the internal diameter of housing, makes external peripheral surface and the shell inner surface matched in clearance of described two rotors.The hole circle perimeter surface of described rotor bore is evenly equipped with four rotor welding grooves 14, and this rotor welding groove is along the axial perforation of this rotor, for the inner surface of this rotor and hollow shaft is fixed by laser welding.
On the housing wall of described housing one side, the symmetrical stator lead hole 9 that has, penetrates the stator lead-out wire of two stators in this stator lead hole and draws outside housing.
The internal diameter of described hollow shaft is greater than the external diameter of motor shaft, motor shaft can be penetrated to this hollow shaft.In described hollow shaft housing wall, have two rotor leading wire holes 12, and the aperture in this rotor leading wire hole is all positioned at the external peripheral surface of this hollow shaft.By described rotor leading wire hole, two rotor leading-out wires are drawn and are connected with electric connector respectively.
Claims (7)
1. a hollow resolver, is characterized in that, comprises two closed magnetic circuits, housing, pair of bearings, hollow shaft, stator winding resistance and rotor winding resistance, and in described each closed magnetic circuit, the magnetic gap of stator and rotor junction is 0.5mm; Pair of bearings is sleeved on hollow shaft; Two described closed magnetic circuits are sleeved on hollow shaft, and between described pair of bearings; Stator in two described closed magnetic circuits and this hollow shaft matched in clearance, the rotor in two described closed magnetic circuits and this hollow shaft synchronous rotary; After two closed magnetic circuits are sleeved on hollow shaft, the stator in described two closed magnetic circuits and rotor mode with stator-rotor-rotor-stator on this hollow shaft are arranged; Housing is sleeved on the external peripheral surface of described two closed magnetic circuits; The stator lead-out wire of the each stator in two closed magnetic circuits is connected with the electric connector being positioned at outside this housing respectively; The rotor leading-out wire of the each rotor in two closed magnetic circuits is connected with the electric connector being sleeved on described hollow shaft respectively; The internal diameter of described hollow shaft is greater than the external diameter of motor shaft, motor shaft can be penetrated to this hollow shaft.
2. hollow resolver as claimed in claim 1, is characterized in that, the stator magnetizer of described two stators is the double Shell of hollow, has formed stator winding mounting groove by the space between described double Shell, for laying stator winding; The annulus end face sealing of described stator magnetizer one end, the annulus end face of the other end is uncovered; The internal diameter of described two stators is slightly larger than the external diameter of described hollow shaft, and the external diameter of described two stators is all identical with the internal diameter of described housing, makes external peripheral surface and the shell inner surface interference engagement of described two stators.
3. hollow resolver as claimed in claim 1, is characterized in that, the rotor magnetic conductor of described rotor is also the double Shell of hollow, has formed rotor winding mounting groove by the space between described double Shell, for laying rotor winding; The annulus end face sealing of described rotor magnetic conductor one end, the annulus end face of the other end is uncovered; The internal diameter of rotor is identical with the external diameter of described hollow shaft, and makes interference engagement between this rotor and this hollow shaft, and the external diameter of described two rotors is all slightly less than the internal diameter of housing, makes external peripheral surface and the shell inner surface matched in clearance of described two rotors.
4. hollow resolver as claimed in claim 2, is characterized in that there is annular stator welding groove at the outer rim place of described stator magnetizer blind end end face, for the inner surface of this stator magnetizer and housing is welded and fixed.
5. hollow resolver as claimed in claim 3, it is characterized in that, the hole circle perimeter surface of described rotor magnetic conductor centre bore is evenly equipped with four rotor welding grooves, and this rotor welding groove is along the axial perforation of this rotor magnetic conductor, for the inner surface of this rotor magnetic conductor and hollow shaft is welded and fixed.
6. hollow resolver as described in claim 2 and 3, is characterized in that, described stator winding is identical with the number of turn of rotor winding.
7. hollow resolver as claimed in claim 1, is characterized in that, the symmetrical stator lead hole that has on the housing wall of described housing one side; In described hollow shaft housing wall, have two rotor leading wire holes, and the aperture in this rotor leading wire hole is all positioned at the external peripheral surface of this hollow shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410391932.3A CN104200967A (en) | 2014-08-11 | 2014-08-11 | Hollow rotary transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410391932.3A CN104200967A (en) | 2014-08-11 | 2014-08-11 | Hollow rotary transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104200967A true CN104200967A (en) | 2014-12-10 |
Family
ID=52086243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410391932.3A Pending CN104200967A (en) | 2014-08-11 | 2014-08-11 | Hollow rotary transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104200967A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934745A (en) * | 2015-06-09 | 2015-09-23 | 西安航空制动科技有限公司 | Hollow rapid dismounting electric connector |
| CN108695054A (en) * | 2017-04-05 | 2018-10-23 | 天津市松正电动汽车技术股份有限公司 | A kind of rotating transformer structures |
| CN111052275A (en) * | 2017-08-23 | 2020-04-21 | 纬湃科技有限责任公司 | Method for manufacturing a rotor of an electric machine with a contactless power transfer system, and rotor, electric machine and motor vehicle |
| CN114203390A (en) * | 2021-11-05 | 2022-03-18 | 河北汉光重工有限责任公司 | Installation and wiring structure of multi-polar rotary transformer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61174606A (en) * | 1985-01-29 | 1986-08-06 | Tokyo Juki Ind Co Ltd | Non-contact type power supply device |
| CN101728073A (en) * | 2010-01-08 | 2010-06-09 | 西北工业大学 | Rotary transformer for real-time monitoring system of airplane tire pressure |
| DE102012007871B3 (en) * | 2011-08-05 | 2012-08-09 | Udo Dannenmaier | Method for transmission of electric power from stator to rotatable device carrier for e.g. drilling machine, involves constructing parallel structure for feeding power during occurrence of interfering force such that force is compensated |
-
2014
- 2014-08-11 CN CN201410391932.3A patent/CN104200967A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61174606A (en) * | 1985-01-29 | 1986-08-06 | Tokyo Juki Ind Co Ltd | Non-contact type power supply device |
| CN101728073A (en) * | 2010-01-08 | 2010-06-09 | 西北工业大学 | Rotary transformer for real-time monitoring system of airplane tire pressure |
| DE102012007871B3 (en) * | 2011-08-05 | 2012-08-09 | Udo Dannenmaier | Method for transmission of electric power from stator to rotatable device carrier for e.g. drilling machine, involves constructing parallel structure for feeding power during occurrence of interfering force such that force is compensated |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934745A (en) * | 2015-06-09 | 2015-09-23 | 西安航空制动科技有限公司 | Hollow rapid dismounting electric connector |
| CN104934745B (en) * | 2015-06-09 | 2017-10-20 | 西安航空制动科技有限公司 | A kind of hollow fast quick-detach electric connector |
| CN108695054A (en) * | 2017-04-05 | 2018-10-23 | 天津市松正电动汽车技术股份有限公司 | A kind of rotating transformer structures |
| CN111052275A (en) * | 2017-08-23 | 2020-04-21 | 纬湃科技有限责任公司 | Method for manufacturing a rotor of an electric machine with a contactless power transfer system, and rotor, electric machine and motor vehicle |
| CN111052275B (en) * | 2017-08-23 | 2022-02-15 | 纬湃科技有限责任公司 | Method for manufacturing a rotor of an electric machine with a contactless power transfer system, and rotor, electric machine and motor vehicle |
| US11489420B2 (en) | 2017-08-23 | 2022-11-01 | Vitesco Technologies GmbH | Method for manufacturing a rotor for an electrical machine with a contactless power transmission system, and rotor, electrical machine and motor vehicle |
| CN114203390A (en) * | 2021-11-05 | 2022-03-18 | 河北汉光重工有限责任公司 | Installation and wiring structure of multi-polar rotary transformer |
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Application publication date: 20141210 |