CN112532001A - Dual-stator dual-rotation small-size redundancy servo motor - Google Patents
Dual-stator dual-rotation small-size redundancy servo motor Download PDFInfo
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- CN112532001A CN112532001A CN202011185777.1A CN202011185777A CN112532001A CN 112532001 A CN112532001 A CN 112532001A CN 202011185777 A CN202011185777 A CN 202011185777A CN 112532001 A CN112532001 A CN 112532001A
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- servo motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/04—Machines with one rotor and two stators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to a double-stator double-rotation small-size redundancy servo motor which comprises a rotor, double stators, a double rotary transformer, an end cover assembly and an electric connector, wherein the rotor is connected with the double stators; the rotor is arranged on the rotor shaft, and a metal sheath is sleeved on the surface of the rotor; the double stators are fixedly arranged on the same motor shell and share the rotor shaft; the double rotary transformers are connected in series on the rotor shaft and distributed at the tail end of the motor to be sealed at the shaft end by an end cover assembly, share one electric connector for detecting the position and the speed of the rotor and are respectively transmitted to the EHA drive controller and the EMA drive controller through the electric connector and an external cable, and both the EHA drive controller and the EMA drive controller can independently control the motor; the oil through hole is designed on the end cover assembly, and the inner cavity of the whole motor is immersed in oil.
Description
Technical Field
The invention relates to a double-stator double-rotation small-size redundancy servo motor, in particular to a small-size redundancy servo motor for realizing a double-redundancy switching function of a clutch mechanism of an integrated electric steering system.
Background
The double-stator double-rotation-transformation small-size redundancy servo motor (hereinafter referred to as a motor) is a power and control core element of a clutch mechanism of the integrated electric steering system, the motor drives an eccentric bushing structure to provide power for a clutch constant delivery pump, the double-stator double-rotation-transformation corresponds to two sets of driving controllers which are respectively an EHA driving controller and an EMA driving controller, and the two sets of controllers can independently control the motor, so that the double-redundancy switching function of a main steering gear clutch of the integrated electric steering system is realized. Correspondingly, how to solve the problem that the motor runs reliably in an oil immersion environment is a key problem of the technical scheme of the clutch mechanism of the electric steering system, and on the other hand, how to achieve the performance index requirement while realizing the redundancy design under the limited space and weight requirements is another key point of the design of the motor.
At present, the double-redundancy design mostly only shares a motor shell, actually still adopts two motors, or does not consider the rotary-transformation double-redundancy and the like, and the design of the double-redundancy motor for oil immersion work is rarely mentioned at home.
Disclosure of Invention
The technical problem solved by the invention is as follows: a small-sized redundancy servo motor for realizing a dual redundancy switching function of a clutch mechanism of an integrated electric steering system is provided.
The technical scheme of the invention is as follows: a double-stator double-rotation small-size redundancy servo motor comprises a rotor, double stators, a double rotary transformer, an end cover assembly and an electric connector;
the rotor is arranged on the rotor shaft, and a metal sheath is sleeved on the surface of the rotor; the double stators are fixedly arranged on the same motor shell and share the rotor shaft; the double rotary transformers are connected in series on the rotor shaft and distributed at the tail end of the motor to be sealed at the shaft end by an end cover assembly, share one electric connector for detecting the position and the speed of the rotor and transmitting an excitation signal, and are respectively transmitted to the EHA drive controller and the EMA drive controller through the electric connector and an external cable, and the EHA drive controller and the EMA drive controller can both independently control the motor; an oil through hole is designed on the end cover assembly, and the whole motor inner cavity is immersed in oil; oil enters the inner cavity of the motor through a bearing gap at the shaft outlet end of the motor, and is circulated through an oil path in the inner cavity of the motor through a gap between the stator and the rotor and an oil through hole of the end cover assembly.
Preferably, the double stators are limited and fixed through a key groove, a positioning sleeve and a motor shell structure.
Preferably, the rotor permanent magnet is axially limited by a positioning ring and a balancing ring mounted on the rotor shaft.
Preferably, the rotor is in a multi-pole structure.
Preferably, the electrical connector and end cap assembly are sealed using a dual seal technique.
Preferably, the double stators and the rotary transformer are encapsulated by high-thermal-conductivity epoxy casting glue.
Preferably, the output shaft end of the motor shell is arranged on the whole clutch by adopting a double-channel seal and flange structure.
Preferably, an eccentric shaft sleeve is mounted on a rotor shaft at the output end of the motor, and the rotor shaft is limited by a retaining ring and a key groove structure.
Preferably, a deep groove ball bearing is arranged on an eccentric shaft sleeve at the output end of the motor.
Preferably, the rotary transformer adopts double nuts to lock on the rotor shaft, the threads are coated with anaerobic adhesive, and the rotary transformer pressing sheet and the rotary transformer check ring are locked with the end cover assembly.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides an innovative scheme of a double-stator double-rotation-transformer small-redundancy servo motor, wherein double-stator double-rotation transformers share a rotor shaft and share a series distributed structure of a motor shell, the double-stator double-rotation transformers correspond to two sets of driving controllers which are respectively an EHA driving controller and an EMA driving controller, and the two sets of controllers can independently control the motor, so that the double-redundancy switching function of a clutch mechanism of an integrated electric steering system is realized.
(1) The redundancy design method of the motor with double stators and double rotary transformers sharing the same rotor shaft is adopted, the double rotary transformers are all arranged at the tail end and share one electric connector for outgoing lines, the redundancy design problem of the servo motor under the limited volume and weight is solved, and the reliability of the integrated electric steering system is improved.
(2) The electromagnetic field simulation analysis technology, the temperature field simulation analysis technology and the structural strength analysis technology of the multi-pole fractional slot permanent magnet synchronous motor are adopted, the contradiction between the size and the output power of the motor is solved, reasonable electromagnetic design is carried out, the motor works for a short time and oil is radiated, the current density of the motor is improved during design, the rated torque current density is greater than 9A/mm2, the power density is further improved, the space structure layout is optimized, the rotor shaft and the electric connector are shared through increasing the length-diameter ratio, and the double-rotation transformers are located on the side of the end cover, so that the weight, the volume and the rotational inertia of the motor are reduced, and the stable operation capacity under the eccentric load is improved.
(3) The electric connector and the end cover adopt a double-channel sealing technology, the rotary seal is cancelled, and the problem of oil leakage at the electric connector and the connecting flange under the oil immersion working environment is solved.
(4) High-heat-conductivity epoxy casting glue with good oil water resistance, heat resistance and certain mechanical strength is adopted for encapsulating the motor stator and the double-rotation transformer, so that the insulating property and the winding protection property of the motor are improved, and the capability of stable work under the complex working condition environments of machine, electricity, heat, oil and pressure is met.
Drawings
FIG. 1 is a three-dimensional view of a dual-stator dual-rotation small-redundancy servo motor;
FIG. 2 is a dual-stator dual-rotation small-size redundancy servo motor;
the structure comprises an end cover 1, an end cover 2, an electric connector 3, a double-row deep groove ball bearing 4, an eccentric shaft sleeve 5, a motor shell 6, an eccentric shaft sleeve key 7, an eccentric shaft sleeve retainer ring 8, a single-row angular contact bearing 9, a potting material 10, a stator limit key 11, a positioning sleeve 12, a positioning ring 13, a stator 14, a rotor 15, a metal sheath 16, a balance ring 17, a rotary transformer 18, a rotary transformer pressing sheet 19, a rotary transformer sleeve 20 and an end cover oil through hole.
Detailed Description
The invention is further illustrated by the following examples.
As a clutch mechanism power single machine, a three-dimensional diagram of a double-stator double-rotation-transformation small-scale redundancy servo motor is shown in a figure 1, in order to meet the requirements of a system on double-stator double-rotation transformation, small size, low weight, oil immersion work and the like of the motor, a motor magnetic circuit is reasonably designed, finite element analysis research is carried out on an electromagnetic field and a temperature field, the electromagnetic utilization space is fully improved, the torque density, the rotating speed range and the short-time temperature resistance capability are improved, and the size and the weight of the motor are reduced. Meanwhile, effective structural design measures are adopted, and stability and reliability under the oil immersion working environment are guaranteed.
The permanent magnet synchronous servo motor is composed of a shell 5, a rotor 14, a double stator 13, a double rotary transformer 17, an end cover assembly 1, an electric connector 2 and the like, and is shown in figure 2.
Under the requirements of limited space and weight, the redundancy design is realized and the performance index requirement is met. The double stators are distributed in a serial mode, and the stators are limited and fixed through the key grooves 10, the positioning sleeves 11 and the shell structure 5. Considering the eccentric load of the output shaft end, the deep groove ball bearings 3 and 8 with higher radial load capacity are adopted through simulation calculation. The double stators share one rotor shaft 14, the rotor permanent magnet is axially limited through the positioning ring 12 and the balance ring 16, and the surface of the rotor is sleeved with a metal sheath 15 (such as a stainless steel sheath) to inhibit the thermal expansion of the magnetic steel and the safety and reliability of the magnetic steel during long-time work.
The double rotary transformers 17 are distributed at the tail end of the motor in series, are tightly equipped by double nuts, share one electric connector for detecting the position and the speed of the rotor and are transmitted to the driver through the electric connector and an external cable. In order to reduce the volume of the motor and improve the power density in unit volume, the rotor can select a multi-pole structure within the range allowed by iron loss, the invention adopts the pole slot matching design of an 8-pole 9-slot motor, optimizes the air gap flux density waveform design and reduces the torque fluctuation to the maximum extent.
In the aspect of solving the reliable operation of motor under the immersion oil environment, the motor immersion oil work, two oil through holes 20 are designed on the end cover subassembly, reinforcing fluid circulation heat-sinking capability. The rotary seal is cancelled, the motor is arranged on the clutch shell through a flange, and the double-channel O-shaped ring is sealed outwards and is not allowed to leak; because the motor is immersed in oil, the strong current and rotating power transformation connectors need to adopt double-channel sealing; the motor stator and the rotary transformer are encapsulated by high-heat-conductivity epoxy casting glue.
When the double-stator dual-rotation clutch is used, the motor drives the eccentric shaft sleeve 4 and the double-row deep groove ball bearing 3 to provide power for the clutch constant delivery pump, the dual-rotation of the double stators corresponds to the two sets of driving controllers which are respectively an EHA driving controller and an EMA driving controller, and the two sets of controllers can independently control the motor, so that the dual-redundancy switching function of the main steering gear clutch of the integrated electric steering system is realized.
The invention has not been described in detail in part in the common general knowledge of a person skilled in the art.
Claims (10)
1. The utility model provides a two stator bispin become small-size redundancy servo motor which characterized in that: the double-stator double-rotary transformer comprises a rotor, double stators, a double rotary transformer, an end cover assembly and an electric connector;
the rotor is arranged on the rotor shaft, and a metal sheath is sleeved on the surface of the rotor; the double stators are fixedly arranged on the same motor shell and share the rotor shaft; the double rotary transformers are connected in series on the rotor shaft and distributed at the tail end of the motor to be sealed at the shaft end by an end cover assembly, share one electric connector for detecting the position and the speed of the rotor and transmitting an excitation signal, and are respectively transmitted to the EHA drive controller and the EMA drive controller through the electric connector and an external cable, and the EHA drive controller and the EMA drive controller can both independently control the motor; an oil through hole is designed on the end cover assembly, and the whole motor inner cavity is immersed in oil; oil enters the inner cavity of the motor through a bearing gap at the shaft outlet end of the motor, and is circulated through an oil path in the inner cavity of the motor through a gap between the stator and the rotor and an oil through hole of the end cover assembly.
2. The servo motor of claim 1, wherein: the double stators are limited and fixed through the key grooves, the positioning sleeves and the motor shell structure.
3. The servo motor of claim 1, wherein: and the rotor permanent magnet is axially limited by a positioning ring and a balancing ring which are arranged on the rotor shaft.
4. The servo motor of claim 1, wherein: the rotor is of a multi-pole structure.
5. The servo motor of claim 1, wherein: the electrical connector and end cap assembly are sealed using a dual seal technique.
6. The servo motor of claim 1, wherein: the double stators and the rotary transformer are encapsulated by high-heat-conductivity epoxy casting glue.
7. The servo motor of claim 1, wherein: the shaft outlet end of the motor shell is arranged on the whole clutch by adopting a double-channel seal and flange structure.
8. The servo motor of claim 1, wherein: an eccentric shaft sleeve is arranged on a rotor shaft at the output end of the motor, and the position of the eccentric shaft sleeve is limited by a retaining ring and a key groove structure.
9. The servo motor of claim 8, wherein: and a deep groove ball bearing is arranged on the eccentric shaft sleeve at the output end of the motor.
10. The servo motor of claim 1, wherein: the rotary transformer adopts double nuts to lock on a rotor shaft, the threads are coated with anaerobic adhesive, and a rotary transformer pressing sheet and a rotary transformer check ring are locked with an end cover assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011185777.1A CN112532001A (en) | 2020-10-29 | 2020-10-29 | Dual-stator dual-rotation small-size redundancy servo motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011185777.1A CN112532001A (en) | 2020-10-29 | 2020-10-29 | Dual-stator dual-rotation small-size redundancy servo motor |
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| Publication Number | Publication Date |
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| CN112532001A true CN112532001A (en) | 2021-03-19 |
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| CN202011185777.1A Pending CN112532001A (en) | 2020-10-29 | 2020-10-29 | Dual-stator dual-rotation small-size redundancy servo motor |
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Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937371A (en) * | 2006-10-16 | 2007-03-28 | 中山大学 | Alternating current permanent-magnet water-submersible electric machine |
| CN201365173Y (en) * | 2009-02-25 | 2009-12-16 | 艾欧史密斯电气产品（苏州）有限公司 | Motor stator and enclosure fixed structure |
| CN201690329U (en) * | 2009-10-19 | 2010-12-29 | 兰州飞行控制有限责任公司 | Dual-redundancy DC brushless servo motor of flight control system actuator loop |
| CN103219856A (en) * | 2013-03-11 | 2013-07-24 | 上海交通大学 | Axis static state vacuum partition method of integrated rotary transformer |
| CN203368272U (en) * | 2013-07-22 | 2013-12-25 | 浙江联宜电机股份有限公司 | Double stator structure of brushless motor |
| CN206237255U (en) * | 2016-12-01 | 2017-06-09 | 上海光裕汽车空调压缩机股份有限公司 | Electric compressor motor |
| CN206673799U (en) * | 2016-10-31 | 2017-11-24 | 北京精密机电控制设备研究所 | A kind of double remaining permanent magnet synchronous servo motors of tandem |
| CN207459886U (en) * | 2017-10-20 | 2018-06-05 | 比亚迪汽车工业有限公司 | Motor casing and with its motor, vehicle |
| CN208272817U (en) * | 2018-06-14 | 2018-12-21 | 上海福赞电机科技有限公司 | A kind of permanent-magnet servo motor |
| CN109450154A (en) * | 2018-11-21 | 2019-03-08 | 高邮佳春科技有限公司 | A kind of magneto facilitating maintenance |
| CN109728701A (en) * | 2017-10-27 | 2019-05-07 | 北京精密机电控制设备研究所 | A kind of entirety encapsulating high overload permanent magnet synchronous servo motor |
| CN109921590A (en) * | 2019-03-08 | 2019-06-21 | 贵州航天林泉电机有限公司 | A kind of axial magnetic flux electric drive assembly structure |
| CN209767279U (en) * | 2019-06-17 | 2019-12-10 | 南京晨荣环保设备制造有限公司 | A novel wet dual-purpose motor futilely for smashing type grid de-dirt machine |
| CN209781417U (en) * | 2019-04-04 | 2019-12-13 | 点山科技(苏州)有限公司 | Double-nut anti-loosening fastening device |
| CN210183187U (en) * | 2019-07-15 | 2020-03-24 | 苏州朗高电机有限公司 | Double-rotation structure for variable pitch motor |
| CN210536381U (en) * | 2019-07-15 | 2020-05-15 | 苏州朗高电机有限公司 | Three-end cover variable pitch motor with double rotary transformers |
| CN210733819U (en) * | 2019-07-26 | 2020-06-12 | 武汉理工大学 | Integrated electric wheel system and electric vehicle |
| CN111654132A (en) * | 2020-06-22 | 2020-09-11 | 北京航空航天大学 | Wet-type permanent magnet fault-tolerant motor for aviation electro-hydrostatic actuator |
| CN111779678A (en) * | 2020-06-04 | 2020-10-16 | 北京航天动力研究所 | Ultralow specific speed circulating pump applied to space two-phase flow system |
-
2020
- 2020-10-29 CN CN202011185777.1A patent/CN112532001A/en active Pending
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937371A (en) * | 2006-10-16 | 2007-03-28 | 中山大学 | Alternating current permanent-magnet water-submersible electric machine |
| CN201365173Y (en) * | 2009-02-25 | 2009-12-16 | 艾欧史密斯电气产品（苏州）有限公司 | Motor stator and enclosure fixed structure |
| CN201690329U (en) * | 2009-10-19 | 2010-12-29 | 兰州飞行控制有限责任公司 | Dual-redundancy DC brushless servo motor of flight control system actuator loop |
| CN103219856A (en) * | 2013-03-11 | 2013-07-24 | 上海交通大学 | Axis static state vacuum partition method of integrated rotary transformer |
| CN203368272U (en) * | 2013-07-22 | 2013-12-25 | 浙江联宜电机股份有限公司 | Double stator structure of brushless motor |
| CN206673799U (en) * | 2016-10-31 | 2017-11-24 | 北京精密机电控制设备研究所 | A kind of double remaining permanent magnet synchronous servo motors of tandem |
| CN206237255U (en) * | 2016-12-01 | 2017-06-09 | 上海光裕汽车空调压缩机股份有限公司 | Electric compressor motor |
| CN207459886U (en) * | 2017-10-20 | 2018-06-05 | 比亚迪汽车工业有限公司 | Motor casing and with its motor, vehicle |
| CN109728701A (en) * | 2017-10-27 | 2019-05-07 | 北京精密机电控制设备研究所 | A kind of entirety encapsulating high overload permanent magnet synchronous servo motor |
| CN208272817U (en) * | 2018-06-14 | 2018-12-21 | 上海福赞电机科技有限公司 | A kind of permanent-magnet servo motor |
| CN109450154A (en) * | 2018-11-21 | 2019-03-08 | 高邮佳春科技有限公司 | A kind of magneto facilitating maintenance |
| CN109921590A (en) * | 2019-03-08 | 2019-06-21 | 贵州航天林泉电机有限公司 | A kind of axial magnetic flux electric drive assembly structure |
| CN209781417U (en) * | 2019-04-04 | 2019-12-13 | 点山科技(苏州)有限公司 | Double-nut anti-loosening fastening device |
| CN209767279U (en) * | 2019-06-17 | 2019-12-10 | 南京晨荣环保设备制造有限公司 | A novel wet dual-purpose motor futilely for smashing type grid de-dirt machine |
| CN210183187U (en) * | 2019-07-15 | 2020-03-24 | 苏州朗高电机有限公司 | Double-rotation structure for variable pitch motor |
| CN210536381U (en) * | 2019-07-15 | 2020-05-15 | 苏州朗高电机有限公司 | Three-end cover variable pitch motor with double rotary transformers |
| CN210733819U (en) * | 2019-07-26 | 2020-06-12 | 武汉理工大学 | Integrated electric wheel system and electric vehicle |
| CN111779678A (en) * | 2020-06-04 | 2020-10-16 | 北京航天动力研究所 | Ultralow specific speed circulating pump applied to space two-phase flow system |
| CN111654132A (en) * | 2020-06-22 | 2020-09-11 | 北京航空航天大学 | Wet-type permanent magnet fault-tolerant motor for aviation electro-hydrostatic actuator |
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Application publication date: 20210319 |
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| RJ01 | Rejection of invention patent application after publication |