WO2022163029A1 - 電磁アクチュエータ装置及びこれを備えたサスペンション装置 - Google Patents
電磁アクチュエータ装置及びこれを備えたサスペンション装置 Download PDFInfo
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- WO2022163029A1 WO2022163029A1 PCT/JP2021/038197 JP2021038197W WO2022163029A1 WO 2022163029 A1 WO2022163029 A1 WO 2022163029A1 JP 2021038197 W JP2021038197 W JP 2021038197W WO 2022163029 A1 WO2022163029 A1 WO 2022163029A1
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- sectional area
- tooth end
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- electromagnetic actuator
- Prior art date
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- 239000000725 suspension Substances 0.000 title claims description 16
- 238000004804 winding Methods 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000010349 pulsation Effects 0.000 abstract description 22
- 230000004907 flux Effects 0.000 description 25
- 230000007423 decrease Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 239000000470 constituent Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
- H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
-
- 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
- H02K11/20—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
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/40—Type of actuator
- B60G2202/42—Electric actuator
- B60G2202/422—Linear motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2401/00—Indexing codes relating to the type of sensors based on the principle of their operation
- B60G2401/17—Magnetic/Electromagnetic
- B60G2401/172—Hall effect
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Definitions
- the present invention relates to an electromagnetic actuator device using a linear motor and a suspension device having the same.
- An object of the present invention is to provide an electromagnetic actuator device using a linear motor capable of reducing pulsation and improving thrust, and a suspension device having the same.
- the present invention includes a magnet portion and an armature that moves relative to the magnet portion, the armature having a plurality of teeth formed along a direction of relative movement, and the plurality of teeth formed along a direction of relative movement.
- An electromagnetic actuator device comprising a plurality of magnets facing each other and arranged along the direction of relative movement, wherein the minimum cross-sectional area Sc1 of one tooth end of the armature and the minimum cross-sectional area Sc1 of the other tooth end of the armature A relationship with the area Sc2 is set to Sc1>Sc2, and a relationship between the minimum cross-sectional area Sc2 of the other tooth end portion and the cross-sectional area Sy of the yoke in the direction transverse to the relative movement direction is set to Sc2 ⁇ Sy.
- FIG. 2 is an external perspective view of the electromagnetic actuator device with a linear motor section extracted;
- FIG. 1B is a sectional view taken along line IB-IB (YZ plane) of FIG. 1A; It is a cross-sectional view showing a conventional structure. It is a sectional view showing the structure of the linear motor concerning Example 1 of the present invention.
- FIG. 5 is a diagram showing characteristics of thrust and thrust pulsation with respect to the cross-sectional area of one end;
- FIG. 7 is a cross-sectional view showing the structure of the linear motor in a state where Wc is smaller than Wm (Wc ⁇ Wm) according to Example 2 of the present invention
- FIG. 8 is a cross-sectional view showing the structure of the linear motor in a state where Wc is greater than Wm (Wc>Wm) according to Example 2 of the present invention
- FIG. 10 is a configuration diagram of a vehicle suspension device using an electromagnetic actuator device according to Embodiment 3 of the present invention.
- constituent elements of the present invention do not necessarily have to be independent entities, and one constituent element may consist of a plurality of members, a plurality of constituent elements may consist of one member, a certain constituent element may part of a component, part of one component overlaps part of another component, and so on.
- FIG. 1 the armature 10 and the magnet part 20 move relatively.
- the direction of relative movement is the Z direction
- two directions orthogonal to the Z direction are the X direction and the Y direction.
- FIG. 1A is an external perspective view of a linear motor section extracted from an electromagnetic actuator device
- FIG. 1B is a cross-sectional view of FIG. 1A cut along line IB-IB (YZ plane).
- Figures 1A and 1B describe the main parts of the linear motor, and do not show other mechanical parts of the electromagnetic actuator device.
- the linear motor 1 includes a magnet portion 20 and an armature 10 that moves relative to the magnet portion 20 .
- the armature 10 includes a plurality of teeth 12 formed along the Z direction (relative movement direction), a plurality of slots 15 formed between the plurality of teeth 12, a yoke 14 connecting the plurality of teeth 12, A winding 13 is provided which is wound in a plurality of slots.
- the plurality of slots 15 are composed of U-phase slots 15a, V-phase slots 15b, and W-phase slots 15c.
- a magnetic body 22 (outer cylinder) formed in a cylindrical shape is arranged on the inner peripheral side of the magnetic body 22, faces the plurality of teeth 12 with a gap therebetween, and extends in the Z direction ( A plurality of magnets 21 arranged along the relative movement direction) are provided.
- the armature 10 is arranged on the inner peripheral side of the magnet portion 20 formed in a cylindrical shape.
- the magnet part 20 and the armature 10 move relatively in the Z direction, and generate force in the Z direction, that is, thrust.
- the configuration of this linear motor is a four-pole, three-slot structure in which three windings 13 are arranged on the magnetic bodies 11 of the armature 10 that constitutes the teeth for four magnets.
- This is one example of the configuration of the linear motor, and is not limited to this configuration as long as the same effect can be obtained.
- the number of poles, the number of slots, and the cylindrical linear motor are not limited.
- the linear motor shown in FIG. 1 is an example of a three-phase linear motor that applies a three-phase alternating current to three windings 13 (13a, 13b, 13c), and the current values of the three windings 13 are varied. Thus, any force can be generated at any position.
- the thrust is produced by the interaction of the magnetic flux produced by the magnet 21 and the magnetic flux produced by the winding 13 .
- linear motors Unlike rotating machines, linear motors have ends on the armature. It is known that secondary thrust pulsation occurs in a linear motor due to the influence of the edge. This is due to the imbalance of the magnetic flux linkage between the three phases due to the ends.
- FIG. 2 is a comparative cross-sectional view of two linear motors with different tooth end dimensions.
- FIG. 2A is a cross-sectional view showing a conventional structure. Sc2a is the minimum cross-sectional area of the tooth end portion 12a, Sc1 is the minimum cross-sectional area of the tooth end portion 12c, and Sy is the cross-sectional area of the yoke .
- the cross-sectional area of the yoke 14 is donut-shaped with the central portion hollowed out.
- a magnetic flux 60 passes through the tooth ends and the yoke.
- FIG. 2B is a cross-sectional view showing the structure of the linear motor according to Example 1 of the present invention, where the minimum cross-sectional area Sc2b of the tooth end 12b is smaller than the minimum cross-sectional area Sc1 of the tooth end 12c (Sc2b ⁇ Sc1). . Since the linear motor of this embodiment has a cylindrical shape, the cross-sectional areas of the tooth ends 12a, 12b, and 12c are not constant, and the cross-sectional area decreases toward the inner diameter side. Therefore, in Example 1, comparison is made using the cross-sectional area of the tooth end located at the bottom of the slot (the innermost side).
- Fig. 3 is a diagram showing the characteristics of thrust and thrust pulsation with respect to the cross-sectional area of one end.
- the upper diagram in FIG. 3 shows the characteristics of thrust
- the lower diagram in FIG. 3 shows the characteristics of thrust pulsation.
- the thrust decreases, and the thrust pulsation first increases as Sc2 increases, reaches a maximum value, and then decreases.
- the minimum cross-sectional area of the teeth ends increases, the dimension in the Z-axis direction of the surfaces of the teeth ends facing the magnets increases.
- the section in which the teeth straddle the two magnets becomes longer, and a loop is drawn between the tips of the teeth and the magnets, so that the magnetic flux effective for thrust is reduced and pulsation is also reduced.
- teeth having a large minimum cross-sectional area are used as shown in FIG. 2B. It is desirable to place it on the end 12c side. If it is placed on the tooth end 12b side, leakage flux may occur due to magnetic saturation when driven with a large current, and the reliability of magnetic pole position detection may decrease. Therefore, the reliability of the magnetic pole position detection can be ensured by installing the sensor 50 on the tooth end portion 12c side where magnetic saturation is less likely to occur.
- the first embodiment it is possible to provide an electromagnetic actuator device that suppresses thrust pulsation and improves thrust.
- Embodiment 2 of the present invention will be described with reference to FIGS. 3 and 4.
- FIG. The same reference numerals are assigned to the same configurations as in the first embodiment, and detailed description thereof will be omitted.
- the point at which the thrust pulsation reaches its maximum value is the dimension Wc of the surface of the tooth end 12b facing the magnet in the Z-axis direction and the dimension Wc of the surface of the magnet 21 facing the tooth end 12b in the Z-axis direction.
- the magnetic flux imbalance between the three phases increases, and the thrust pulsation takes a maximum value as shown in FIG.
- FIG. 4B is a cross-sectional view showing the structure of the linear motor when Wc is smaller than Wm (Wc ⁇ Wm) according to Example 2 of the present invention.
- Wc ⁇ Wm shown in FIG. 4B
- the magnet magnetic flux entering the tooth end 12b is reduced because the facing area of the tooth end 12b is small.
- the magnetic flux imbalance between the three phases is reduced, the thrust pulsation is reduced as shown in FIG. 3, and the thrust is increased.
- FIG. 4C is a cross-sectional view showing the structure of the linear motor when Wc is greater than Wm (Wc>Wm) according to Example 2 of the present invention.
- Wc>Wm shown in FIG. 4C
- the tooth ends 12b face two adjacent magnets 21 as described in the first embodiment, so the magnetic flux 60 passing through the adjacent teeth via the yoke is reduced and the tooth ends Since the leakage magnetic flux 61 entering the adjacent magnet 21 through the tip of the portion 12b increases, the imbalance in the amount of magnetic flux between the three phases due to the ends is improved, but the increased leakage magnetic flux 61 reduces the thrust. .
- FIG. 5 is a configuration diagram of a vehicle suspension device using an electromagnetic actuator device according to a third embodiment of the present invention.
- the vehicle body 32 constitutes the body of the vehicle 31.
- a total of four wheels 33 consisting of left and right front wheels and left and right rear wheels are provided on the lower side of the vehicle body 32 .
- four suspension devices 34 are provided between the vehicle body 32 and each wheel 33 in order to suppress vibration during running.
- a suspension device 34 of Example 3 shows an electromagnetic suspension device using the electromagnetic actuator device of the present invention. Although not shown, the suspension device 34 is connected to a power source for supplying current to the electromagnetic actuator and a controller capable of varying the electromagnetic force by controlling the current. The suspension device 34 suppresses vibration directly applied to the vehicle body using electromagnetic force generated by the linear motor.
- the third embodiment it is possible to suppress the increase in size of the linear motor that constitutes the suspension device 34 . Further, the mounting space for the suspension device 34 in the vehicle 31 can be reduced, and the mounting space for equipment related to running can be reduced.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- Linear Motors (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
上述した実施例は本発明を分かり易く説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定するものではない。
Claims (7)
- 磁石部と、前記磁石部と相対移動する電機子とを備え、
前記電機子には、相対移動方向に沿って形成された複数のティースと、前記複数のティース間に形成された複数のスロットと、前記複数のティースを繋ぐヨークと、前記複数のスロットに巻かれる巻線と、を備え、
前記磁石部には、空隙を介して前記複数のティースと対向し、かつ相対移動方向に沿って配置された複数の磁石を備えた電磁アクチュエータ装置であって、
前記電機子の一方のティース端部の最小断面積Sc1と、他方のティース端部の最小断面積Sc2との関係をSc1>Sc2とし、かつ前記他方のティース端部の最小断面積Sc2と、相対移動方向を横切る方向の前記ヨークの断面積Syとの関係をSc2≧Syとしたことを特徴とする電磁アクチュエータ装置。 - 請求項1において、
前記電機子の磁極位置を検出するセンサを備え、
前記センサは前記一方のティース端部側に配置したことを特徴とする電磁アクチュエータ装置。 - 請求項1において、
前記磁石部は筒状に形成され、筒状に形成された前記磁石部の内周側に前記電機子を配置したことを特徴とする電磁アクチュエータ装置。 - 請求項3において、
前記一方のティース端部の最小断面積Sc1と前記他方のティース端部の最小断面積Sc2は、前記スロットの底部に位置するティースの断面積であることを特徴とする電磁アクチュエータ装置。 - 請求項1において、
前記他方のティース端部における前記磁石と対向する面の相対移動方向の寸法Wcと、前記磁石における前記他方のティース端部と対向する面の相対移動方向の寸法Wmとの関係をWc≠Wmとしたことを特徴とする電磁アクチュエータ装置。 - 請求項1において、
前記他方のティース端部における前記磁石と対向する面の相対移動方向の寸法Wcと、前記磁石における前記他方のティース端部と対向する面の相対移動方向の寸法Wmとの関係をWc<Wmとし、かつ、前記他方のティース端部の最小断面積Sc2と前記ヨークの断面積Syの関係をSc2>Syとしたことを特徴とする電磁アクチュエータ装置。 - 請求項1乃至6の何れか1項に記載の電磁アクチュエータ装置を備えたことを特徴とするサスペンション装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202180089454.9A CN116669972A (zh) | 2021-01-26 | 2021-10-15 | 电磁致动器装置和具有该电磁致动器装置的悬架装置 |
US18/269,651 US20240063704A1 (en) | 2021-01-26 | 2021-10-15 | Electromagnetic actuator device and suspension device provided with same |
KR1020237022806A KR20230113391A (ko) | 2021-01-26 | 2021-10-15 | 전자 액추에이터 장치 및 이것을 구비한 서스펜션 장치 |
DE112021005786.3T DE112021005786T5 (de) | 2021-01-26 | 2021-10-15 | Elektromagnetische aktuatorvorrichtung und damit versehene aufhängungsvorrichtung |
Applications Claiming Priority (2)
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JP2021-010173 | 2021-01-26 | ||
JP2021010173A JP7420755B2 (ja) | 2021-01-26 | 2021-01-26 | 電磁アクチュエータ装置及びこれを備えたサスペンション装置 |
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US (1) | US20240063704A1 (ja) |
JP (1) | JP7420755B2 (ja) |
KR (1) | KR20230113391A (ja) |
CN (1) | CN116669972A (ja) |
DE (1) | DE112021005786T5 (ja) |
WO (1) | WO2022163029A1 (ja) |
Citations (2)
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JP2016092842A (ja) * | 2014-10-29 | 2016-05-23 | ファナック株式会社 | コギング力を低減するリニアモータ |
JP2017041947A (ja) * | 2015-08-18 | 2017-02-23 | 山洋電気株式会社 | リニアモータ |
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2021
- 2021-01-26 JP JP2021010173A patent/JP7420755B2/ja active Active
- 2021-10-15 WO PCT/JP2021/038197 patent/WO2022163029A1/ja active Application Filing
- 2021-10-15 KR KR1020237022806A patent/KR20230113391A/ko unknown
- 2021-10-15 CN CN202180089454.9A patent/CN116669972A/zh active Pending
- 2021-10-15 DE DE112021005786.3T patent/DE112021005786T5/de active Pending
- 2021-10-15 US US18/269,651 patent/US20240063704A1/en active Pending
Patent Citations (2)
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JP2016092842A (ja) * | 2014-10-29 | 2016-05-23 | ファナック株式会社 | コギング力を低減するリニアモータ |
JP2017041947A (ja) * | 2015-08-18 | 2017-02-23 | 山洋電気株式会社 | リニアモータ |
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CN116669972A (zh) | 2023-08-29 |
US20240063704A1 (en) | 2024-02-22 |
JP7420755B2 (ja) | 2024-01-23 |
KR20230113391A (ko) | 2023-07-28 |
JP2022114061A (ja) | 2022-08-05 |
DE112021005786T5 (de) | 2023-09-21 |
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