WO2009084425A1 - リニアステッピングモータ - Google Patents
リニアステッピングモータ Download PDFInfo
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- WO2009084425A1 WO2009084425A1 PCT/JP2008/072835 JP2008072835W WO2009084425A1 WO 2009084425 A1 WO2009084425 A1 WO 2009084425A1 JP 2008072835 W JP2008072835 W JP 2008072835W WO 2009084425 A1 WO2009084425 A1 WO 2009084425A1
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- stepping motor
- field magnet
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- 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
Definitions
- the present invention relates to a linear stepping motor that linearly moves a field magnet relative to an armature by a predetermined step amount by switching excitation currents of at least two-phase coils of the armature.
- a stepping motor is a motor having a function of rotating by a certain angle in proportion to a given number of pulses. Since the position and speed are determined only by the command pulse, open-loop control without feedback of the rotor position and speed can be performed.
- the driving circuit of the stepping motor supplies current from the DC power source to each coil of the stepping motor and sequentially switches the coil to be excited every time there is a command pulse. Each time the coil to be excited is switched, the rotor rotates one step at a unique angle.
- the rotary stepping motor converts the rotary motion of the rotor into a linear motion via a motion conversion means such as a rack and pinion mechanism, whereas the linear stepping motor directly moves the slider linearly.
- Known linear stepping motors include VR (Variable Reductance) linear motors that do not use permanent magnets, and HB (Hybrid type) linear motors that combine permanent magnets and electromagnets.
- VR Variable Reductance
- HB Hybrid type linear motors that combine permanent magnets and electromagnets.
- an HB type linear stepping motor capable of increasing the thrust is widely used (see, for example, Patent Document 1). JP-A-61-173660
- the HB type linear stepping motor has advantages such as increasing the thrust and reducing the step amount by processing a large number of comb teeth on the stator and the mover.
- it is difficult to manufacture because it requires processing of a complicated comb tooth shape or assembly that keeps the distance between the stator comb teeth and the mover comb teeth constant. There is.
- an object of the present invention is to provide a linear stepping motor capable of simplifying the structure and obtaining a large thrust and a manufacturing method thereof.
- the invention according to claim 1 is a field magnet in which N and S poles are alternately magnetized in the axial direction, and at least two phases surrounding the field magnet.
- This is a linear stepping motor that linearly moves relative to the armature by a predetermined step amount.
- the inner core includes a number of divided inner cores equal to the number of phases of the at least two-phase coils.
- the coil is disposed inside each of the at least two-phase coils.
- the axial length of the divided inner core is equal to or slightly longer than the axial length of the coils.
- a nonmagnetic material is provided at both ends in the axial direction of each of the at least two-phase coils. It is characterized by being able to.
- the armature in the linear stepping motor according to any one of the first to fourth aspects, includes a yoke of a magnetic material that covers the at least two-phase coil, and the at least two-phase coil.
- Nonmagnetic material bushes provided at both ends in the axial direction to guide relative linear motion of the field magnet with respect to the armature, and nonmagnetic materials provided between the coils and shifting the phases of the coils. It is characterized by having a spacer made of material.
- the field magnet is a single magnet having N and S poles magnetized in the axial direction.
- the unit magnets are arranged so that the S poles and the S poles face each other, and a pair of end faces on which the N poles or S poles of the single magnet are magnetized are parallel to each other and are perpendicular to the axial direction. It is tilted.
- a seventh aspect of the present invention is the linear stepping motor according to the sixth aspect, wherein the at least two-phase coils are two-phase coils, and the pair of end faces are as follows from a plane orthogonal to the axial direction. It is characterized by being tilted by an angle ⁇ calculated from a mathematical formula.
- At least two-phase coils are excited, and the exciting coils are switched to generate magnetic poles generated at both ends in the axial direction of the exciting coils.
- the field for the armature is provided at both ends in the axial direction of the at least two-phase coils.
- a nonmagnetic material bush for guiding the relative linear motion of the magnet is disposed, and a nonmagnetic material spacer for shifting the phase of each coil is disposed between each of the at least two phase coils.
- the magnetic poles generated at both ends of the coil are generated at both ends of the adjacent coil as in the case where the ring-shaped core is arranged at both ends of the coil. It is possible to prevent the cogging force from being generated by the core.
- the magnetic poles generated at both ends of each coil are affected by the magnetic poles generated at both ends of the adjacent coil. Can be prevented. If one inner core is arranged for a plurality of coils, strong magnetic poles are hardly generated at both ends of each coil.
- the magnetic poles can be formed at both ends of the inner core which is a mechanically processed part, the position of the magnetic pole on the coil side and the position of the magnetic pole on the field magnet side are determined. Accurate positioning is possible. Since it is not necessary to manage the length of the coil in the axial direction with high accuracy, the coil winding work is facilitated.
- the non-magnetic material at both ends of the coil can also be used as a bush or a spacer. Further, since the coil is covered with a yoke made of a magnetic material, the magnetic resistance outside the coil is reduced, and the magnetic flux density at both ends of the coil is increased.
- the cogging force generated between the inner core and the field magnet can be reduced by inclining the end face of the single magnet. Since the coil surrounds the field magnet, there is little reduction in the thrust generated by tilting the end face of the single magnet.
- the cogging force generated between the inner core and the field magnet can be minimized.
- the inner core of the magnetic material is disposed inside the coil, the magnetic resistance inside the coil is reduced, and the magnetic flux density at both ends of the coil is increased. Therefore, a linear stepping motor having a large thrust can be obtained.
- the magnetic poles generated at both ends of the coil are generated at both ends of the adjacent coil as in the case where the ring-shaped core is arranged at both ends of the coil. It is possible to prevent the cogging force from being generated by the core.
- the magnetic poles generated at both ends of the coil from being affected by the magnetic poles generated at both ends of the adjacent coil.
- the nonmagnetic material at both ends of the coil can also be used as a bush or a spacer.
- the perspective view of the linear stepping motor in 1st embodiment of this invention Sectional view along the axis of the linear stepping motor Detailed view of rod Single magnet side view Forsa top view
- Cross-sectional view along the forcer axis The figure which shows a yoke (in the figure, (a) shows a top view, (b) shows a side view) Coil cross section Coil connection diagram
- segmentation inner core ((a) in a figure shows a top view, (b) shows a side view in a figure)
- the figure which shows a spacer ((a) shows a top view in the figure, (b) shows a side view in the figure)
- FIG. 1 shows a linear stepping motor according to a first embodiment of the present invention.
- the linear stepping motor includes an elongated rod 1 and a cylindrical forcer 2 that covers the periphery of the rod 1.
- the rod 1 functions as a field magnet of the linear stepping motor, and the forcer 2 functions as an armature.
- the rod 1 moves linearly relative to the forcer 2 in the axial direction. Either the rod 1 or the forcer 2 is fixed, and the other moves.
- FIG. 2 shows a sectional view of the linear stepping motor.
- N-pole and S-pole magnetic poles are alternately magnetized in the axial direction.
- the forcer 2 accommodates a two-phase coil 4 wound around the rod 1 with a gap.
- the two-phase coil 4 includes a pair of coils 4a and 4b arranged in an axial direction.
- N and S poles are generated at both ends of the coils 4a and 4b for each phase.
- the attracting force and / or repulsive force between the magnetic poles at both ends of the coils 4a and 4b of each phase and the magnetic pole of the rod 1 becomes a thrust, and the rod 1 moves linearly with respect to the forcer 2.
- the rod 1 moves linearly by a predetermined step amount with respect to the forcer 2 by switching the excitation currents of the coils 4a and 4b of each phase.
- FIG. 3 shows a detailed view of the rod 1.
- the rod 1 is formed by enclosing a plurality of magnets 5 in a cylindrical pipe 3.
- the cylindrical pipe 3 is made of metal such as stainless steel or resin.
- the single magnet 5 is a rare earth magnet such as a neodymium magnet having a high coercive force.
- the front surface is circular and the side surface is a parallelogram.
- the single magnet 5 is composed of a bonded magnet (for example, a plastic magnet), and is manufactured by injection molding a composite material of magnet powder and resin.
- the single magnet 5 is magnetized with N and S poles in the axial direction.
- one end face 5a in the axial direction of the single magnet 5 is an N pole
- the other end face 5b is an S pole.
- FIG. 4 shows a side view of the single magnet 5.
- a pair of end faces 5 a and 5 b on which the N pole or the S pole is magnetized are parallel, and the pair of end faces 5 a and 5 b are inclined from the face 6 orthogonal to the axial direction.
- P is the magnetic pole pitch between NS and R is the diameter of a single magnet.
- the reason why the end faces 5a and 5b of the single magnet 5 are inclined is to reduce the cogging force generated between the inner core 8 (see FIG. 2) and the single magnet 5.
- the single magnet 5 is made of a bonded magnet and manufactured by injection molding, it is possible to easily perform the inclination processing of the end faces 5a and 5b as in this case.
- both ends of the pipe 3 are closed with end plugs 7.
- the exposed surface 7 a of the end plug 7 is orthogonal to the axial direction of the rod 1.
- the end surface 7 b on the back side of the end plug 7 is inclined according to the end surface 5 a of the single magnet 5.
- the end plug 7 is fixed to the pipe 3 by a coupling means such as adhesion or screw coupling.
- the end plug 7 is processed with a screw 7c for attaching a movable body to be linearly moved.
- the cross-sectional shape of the rod 1 may not be a circle, may be a flat ellipse, or may be a polygon such as a quadrangle.
- FIG. 5 shows a plan view of the forcer 2
- FIG. 6 shows a cross-sectional view of the forcer 2.
- Two-phase coils 4 are accommodated in a line in the axial direction in a cylindrical yoke 9 made of a magnetic material. Inside the coils 4a and 4b, cylindrical divided inner cores 8a and 8b made of a magnetic material are arranged. Resin (non-magnetic material) bushes 11 for guiding the linear motion of the rod 1 relative to the forcer 2 are provided at both ends of the two-phase coil 4 in the axial direction. Between the coils, a spacer 12 for shifting the phase of each coil is provided as a non-magnetic material.
- FIG. 7 shows the yoke.
- the yoke 9 is made of a magnetic material such as silicon steel and is formed in a cylindrical shape. At both ends of the yoke 9 in the axial direction, claw portions 9a that can be bent and deformed are formed. A plurality of claw portions 9a are provided in the circumferential direction. After inserting the bush 11, the two-phase coil 4 and the spacer 12 into the yoke 9, the bush 11 is fixed to the yoke 9 by caulking the claw portion 9 a and engaging with the bush 11. The positions of the two-phase coil 4 and the spacer 12 are fixed by being sandwiched between the bushes 11.
- FIG. 8 shows the coils 4a and 4b.
- Each of the coils 4a and 4b is formed by spirally winding a conductive wire coated with insulation. Lead wires 13 that lead to the beginning and end of winding of the copper wire are drawn out from the ends of the coils 4a and 4b.
- the two-phase coil 4 is composed of the two coils 4a and 4b, but the two-phase coil 4 may be composed of four or six coils.
- FIG. 9 shows a connection diagram of the two-phase coil 4.
- the A-phase coil 4a and the B-phase coil 4b constitute a two-phase coil 4.
- the phase changes to -A phase
- the current flowing through the B-phase coil 4b is inverted, the phase changes to -B phase.
- FIG. 10 shows the divided inner cores 8a and 8b.
- the divided inner cores 8a and 8b are made of a magnetic material such as silicon steel and are formed in a cylindrical shape.
- the length in the axial direction of the divided inner cores 8a and 8b is equal to or slightly longer than the length in the axial direction of the coils 4a and 4b.
- the inner diameters of the divided inner cores 8 a and 8 b are larger than the outer diameter of the rod 1, and there is a gap between the divided inner cores 8 a and 8 b and the rod 1.
- the length L1 in the axial direction of the divided inner cores 8a and 8b (the magnetic pole pitch at both ends of the coils 4a and 4b) is substantially equal to the magnetic pole pitch L2 between NS of the rod 1. 2N + 1 times (N: positive integer). That is, when one end of each of the coils 4 a and 4 b is on the north pole of the rod 1, the other end is on the south pole of the rod 1.
- FIG. 11 shows the bush 11.
- the bush 11 is formed in a ring shape. Since the rod 1 slides on the inner peripheral surface of the bush 11, the bush 11 is manufactured by injection molding a resin having low frictional resistance. The bush 11 also serves as a seal that prevents the iron powder attached to the rod 1 from entering the inside of the forcer 2.
- the bush 11 is formed with a recess 11 a that engages with the claw portion 9 a of the yoke 9.
- FIG. 12 shows the spacer 12.
- the spacer 12 is also formed in a ring shape.
- the spacer 12 is provided in order to keep the interval between the coils 4a and 4b constant.
- the length L3 of the spacer 12 in the axial direction is set so that the phase of the two-phase coil 4 is shifted by 90 degrees in electrical angle. As shown in FIG. 2, in this embodiment, it is set to 3/4 times the NN magnetic pole pitch L4 of the rod 1.
- the inner diameter of the spacer 12 is set larger than the inner diameter of the bush 11 so as not to contact the rod 1 moving in the axial direction.
- Forcer 2 is manufactured through the following steps. First, the divided inner cores 8a and 8b are inserted into the coils 4a and 4b. Next, the bush 11, the coil 4a, the spacer 12, the coil 4b, and the bush 11 are inserted into the yoke 9 in order. Next, the claw portion 9 a of the yoke 9 is bent to fix the bush 11 to the yoke 9. The forcer 2 is assembled as described above. Next, the rod 1 is inserted into the forcer 2. Insertion of the rod 1 is guided by the bush 11.
- FIG. 13 shows an example of the excitation method of the two-phase coil 4 by the control device.
- FIG. 13 shows a one-phase excitation method in which a current is passed through only one phase.
- the A-phase coil 4a is excited in the first step
- the B-phase coil 4b is excited in the next step.
- a current in the opposite direction flows through the A-phase coil 4a (-A phase)
- a current flows in the opposite direction through the B-phase coil 4b (-B phase).
- the control device repeats the above steps every time it receives a command pulse. Steps 1 to 4 are one period, and during this period, the rod 1 moves by the magnetic pole pitch between NN.
- a two-phase excitation method in which a current is passed over two phases of A phase and B phase may be adopted.
- the two-phase coil 4 may be excited by a unipolar method or may be excited by a bipolar method.
- FIG. 14 illustrates the principle of movement of the linear stepping motor.
- the pitch between both end portions 10 of each coil 4a, 4b is 2N + 1 times (N: a positive integer) the magnetic pole pitch between NS of the rod 1, and the pair of both end portions 10 is always N of the rod 1. Opposite the pole and the south pole.
- N a positive integer
- the rod 1 since the A-phase coil 4a is excited, the rod 1 opposes both ends 10 of the A-phase coil 4a with different polarities.
- a force for returning the rod 1 to the position (1) acts, so that positioning becomes possible.
- the centers of both end portions 10 of the B-phase coil 4 b are located at the boundary of the magnetic pole NS of the rod 1.
- the A phase coil 4a and the B phase coil 4b are 90 degrees out of phase in electrical angle.
- both ends of the coils 4a and 4b are arranged as in the case where the ring-shaped core is disposed at both ends of the coils 4a and 4b. It is possible to prevent the magnetic pole generated in one part from being affected by the magnetic poles generated at both ends of the adjacent coil and the cogging force generated by the ring-shaped core.
- the amount of the reduced coil 4 is hardly changed. This is because the space inside the coil 4 that is reduced by the inner core 8 is substantially equal to the space at both ends of the coil 4 that is reduced by the ring-shaped core. In spite of the fact that the amount of the coil 4 hardly changed, the experiment showed that the thrust of the motor when the inner core 8 was arranged increased to three times the thrust when the ring-shaped core was arranged.
- FIG. 15 shows the analysis result of the cogging force generated when the rod 1 is linearly moved with respect to the forcer 2.
- a cogging force is generated in the rod 1 without passing a current through the two-phase coil 4 of the forcer 2.
- FIG. 15 shows the cogging force generated in the rod 1 when the rod 1 is linearly moved at a constant speed.
- the horizontal axis is the position of the rod 1, and the vertical axis is the cogging force. Since the cogging force is a force that hinders the thrust of the motor, it is necessary to suppress the cogging force.
- the variation in cogging force can be suppressed as the angle of the end face of the single motor is tilted by 12 degrees and 20 degrees rather than when the end face of the single motor is not tilted (normal).
- FIG. 16 shows an induced voltage induced in the coil 4.
- the rod 1 is linearly moved with respect to the forcer 2
- an induced voltage is generated in the coil 4.
- the motor is considered as a generator
- the induced voltage represents the strength of the motor. From FIG. 16, it can be seen that even if the end faces 5a and 5b of the single magnet 5 are tilted by 12 degrees and 20 degrees, the thrust of the motor hardly falls. Unlike the flat type linear motor in which the coil faces the plate-like field magnet, the structure in which the coil 4 covers the rod-like field magnet seems to be the cause of the thrust not falling.
- FIG. 17 is a graph showing the principle of reducing the cogging force.
- the horizontal axis represents the position of the rod 1, and the vertical axis represents the cogging force.
- the cogging force C1 generated by the divided inner core 8a and the cogging force C2 generated by the divided inner core 8b are shifted in peak cogging force.
- the total cogging force C3 obtained by adding the divided inner core 8a and the divided inner core 8b acts so that the cogging force C1 and the cogging force C2 cancel each other, and thus has a total of four peaks.
- the coil 4 may be tilted instead of tilting the single magnet 5, but it is difficult to manufacture the coil 4 in terms of manufacturing.
- the N and S poles of the field magnet are magnetized in the radial direction, and the magnetic flux density distribution of the field magnet becomes a trapezoidal shape without a clean sine wave.
- the end face of each magnet may be tilted so that the thrust ripple does not occur, and the magnetic flux density distribution of the field magnet may be made closer to a sine wave.
- the exciting currents of the coils 4a and 4b are stepped, and the distribution of the magnetic flux density of the field magnet does not need to be a sine wave.
- the end surfaces 5a and 5b of the single magnet 5 are tilted in order to reduce the cogging force generated by inserting the core, not to make the magnetic flux density distribution sinusoidal as in the permanent magnet synchronous motor. .
- FIG. 18 shows a comparison of the shapes of the divided inner cores 8a and 8b when the poles made of a magnetic material are provided at both ends in the axial direction of the divided inner cores 8a and 8b and when the poles are not provided.
- (a) is an example with a pole
- (b) in the figure is an example without a pole.
- FIG. 19 shows a comparison result of the back electromotive force constant generated in the coil 4 with and without the pole.
- (a) is a graph with a pole
- (b) in the figure is a graph without a pole. In the case with a pole, the thrust per current was improved by about 4%.
- the number of turns of the coil 4 is reduced, or it is influenced by the magnetic poles of the adjacent divided inner cores 8a and 8b (the voltage of the two-phase coil 4 having a 90 ° phase difference is the same). Etc.). For this reason, it is desirable not to provide a pole.
- FIG. 20 shows a linear stepping motor according to a second embodiment of the present invention.
- the structure of the forcer 2 is the same as that of the first embodiment.
- an example in which the end face of the single magnet 5 accommodated in the rod 1 is not tilted is shown.
- the end face of the single magnet 5 may not be inclined.
- the present invention is not limited to the above-described embodiment, and can be embodied in various embodiments without departing from the gist of the present invention.
- the coil may be a three-phase coil or a five-phase coil.
- microstep driving capable of dividing the full step amount into n may be used.
- the forcer may move instead of the rod moving.
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Abstract
Description
(数1)
θ=tan-1(P/2R)
ここで、P:N-S間の磁極ピッチ、R:単一マグネットの直径
2…フォーサ(電機子)
4…二相のコイル
4a,4b…各相のコイル
5…単一マグネット
5a,5b…マグネットの端面
8…インナーコア
8a,8b…各分割インナーコア
9…ヨーク
11…ブッシュ
12…スペーサ
(数1)
θ=tan-1(P/2R)
ここで、P:N-S間の磁極ピッチ、R:単一マグネットの直径
Claims (9)
- N極及びS極の磁極が軸線方向に交互に着磁される界磁マグネットと、
前記界磁マグネットの周囲を取り囲む少なくとも二相のコイル、及び前記少なくとも二相のコイルの内側に前記界磁マグネットからすきまを空けて配置される磁性材料のインナーコアを有する電機子と、
前記少なくとも二相のコイルを励磁すると共に、励磁するコイルを切り替える制御装置と、を備え、
励磁コイルの軸線方向の両端部に発生する磁極と前記界磁マグネットの磁極との間の吸引力及び/又は反発力を利用して、前記界磁マグネットを前記電機子に対して所定のステップ量ずつ相対的に直線運動させるリニアステッピングモータ。 - 前記インナーコアは、前記少なくとも二相のコイルの相数に等しい数の分割インナーコアからなり、
各分割インナーコアは、前記少なくとも二相のコイルのうちの各コイルの内側に配置されることを特徴とする請求項1に記載のリニアステッピングモータ。 - 前記分割インナーコアの軸線方向の長さが、前記各コイルの軸線方向の長さと等しいか又はわずかに長いことを特徴とする請求項2に記載のリニアステッピングモータ。
- 前記少なくとも二相のコイルのうちの各コイルの軸線方向の両端部には、非磁性材料が設けられることを特徴とする請求項1ないし3のいずれかに記載のリニアステッピングモータ。
- 前記電機子は、
前記少なくとも二相のコイルを覆う磁性材料のヨーク、前記少なくとも二相のコイルの軸線方向の両端部に設けられ、前記電機子に対する前記界磁マグネットの相対的な直線運動を案内する非磁性材料のブッシュ、及び前記各コイル間に設けられ、前記各コイルの位相をずらす非磁性材料のスペーサを有することを特徴とする請求項1ないし4のいずれかに記載のリニアステッピングモータ。 - 前記界磁マグネットは、軸線方向にN極及びS極が着磁された単一マグネットがN極同士及びS極同士が向かい合うように並べられたユニットマグネットを有し、
前記単一マグネットのN極又はS極が着磁される一対の端面が互いに平行であり、かつ軸線方向に直交する面から傾けられることを特徴とする請求項1ないし5のいずれかに記載のリニアステッピングモータ。 - 前記少なくとも二相のコイルは、二相のコイルであり、
前記一対の端面は、軸線方向に直交する面から下記の数式から算出される角度θだけ傾けられることを特徴とする請求項6に記載のリニアステッピングモータ。
(数1)
θ=tan-1(P/2R)
ここで、P:N-S間の磁極ピッチ、R:単一マグネットの直径 - 少なくとも二相のコイルを励磁すると共に、励磁するコイルを切り替えることによって、励磁コイルの軸線方向の両端部に発生する磁極を発生させ、該励磁コイルの磁極と界磁マグネットの磁極との間の吸引力及び/又は反発力を利用して、電機子に対して界磁マグネットを所定のステップ量ずつ相対的に直線運動させるリニアステッピングモータの製造方法において、
前記少なくとも二相のコイルの内側に磁性材料の筒状のインナーコアを挿入するインナーコア挿入工程と、
前記少なくとも二相のコイルを磁性材料の筒状のヨークに挿入するコイル挿入工程と、
前記インナーコアの内側にN極及びS極の磁極が軸線方向に交互に着磁される前記界磁マグネットを挿入するマグネット挿入工程と、
を備えるリニアステッピングモータの製造方法。 - 前記コイル挿入工程では、
前記少なくとも二相のコイルの軸線方向の両端部に、前記電機子に対する前記界磁マグネットの相対的な直線運動を案内する非磁性材料のブッシュを配置すると共に、
前記少なくとも二相のコイルのうちの各コイル間に、各コイルの位相をずらす非磁性材料のスペーサを配置することを特徴とする請求項8に記載のリニアステッピングモータの製造方法。
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JP2009547990A JP5363994B2 (ja) | 2007-12-28 | 2008-12-16 | リニアステッピングモータ |
CN200880122730.1A CN101911451B (zh) | 2007-12-28 | 2008-12-16 | 直线步进电动机 |
DE112008003556T DE112008003556T5 (de) | 2007-12-28 | 2008-12-16 | Linearer Schrittmotor |
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CN (1) | CN101911451B (ja) |
DE (1) | DE112008003556T5 (ja) |
TW (1) | TWI481160B (ja) |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2011114101A (ja) * | 2009-11-25 | 2011-06-09 | Nichia Corp | 円柱状ボンド磁石およびその製造方法並びに製造装置 |
JP2012094825A (ja) * | 2010-09-29 | 2012-05-17 | Nichia Chem Ind Ltd | 円柱状ボンド磁石 |
JP2013011730A (ja) * | 2011-06-29 | 2013-01-17 | Canon Inc | 駆動装置 |
JP2013172585A (ja) * | 2012-02-22 | 2013-09-02 | Mitsubishi Electric Corp | シャフト型リニアモータ可動子、永久磁石、リニアモータ、磁場中成形装置、シャフト型リニアモータ可動子の製造方法 |
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JP5525408B2 (ja) * | 2009-11-09 | 2014-06-18 | 山洋電気株式会社 | 電気機械装置 |
CN106300705A (zh) * | 2015-06-11 | 2017-01-04 | 宇生自然能源科技股份有限公司 | 电磁装置 |
TWM537763U (zh) * | 2016-02-01 | 2017-03-01 | 迅昌科技股份有限公司 | 具雙線圈橋接及同步激磁之發電裝置 |
WO2019096814A1 (en) * | 2017-11-14 | 2019-05-23 | Lutz May | Magnetic field propulsion drive |
CN117879210B (zh) * | 2024-03-11 | 2024-06-18 | 比亚迪股份有限公司 | 次级铁芯、直线电机、电磁悬架及车辆 |
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- 2008-12-16 WO PCT/JP2008/072835 patent/WO2009084425A1/ja active Application Filing
- 2008-12-16 DE DE112008003556T patent/DE112008003556T5/de active Pending
- 2008-12-16 CN CN200880122730.1A patent/CN101911451B/zh active Active
- 2008-12-26 TW TW097150901A patent/TWI481160B/zh active
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2011114101A (ja) * | 2009-11-25 | 2011-06-09 | Nichia Corp | 円柱状ボンド磁石およびその製造方法並びに製造装置 |
JP2012094825A (ja) * | 2010-09-29 | 2012-05-17 | Nichia Chem Ind Ltd | 円柱状ボンド磁石 |
JP2013011730A (ja) * | 2011-06-29 | 2013-01-17 | Canon Inc | 駆動装置 |
JP2013172585A (ja) * | 2012-02-22 | 2013-09-02 | Mitsubishi Electric Corp | シャフト型リニアモータ可動子、永久磁石、リニアモータ、磁場中成形装置、シャフト型リニアモータ可動子の製造方法 |
Also Published As
Publication number | Publication date |
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JP5363994B2 (ja) | 2013-12-11 |
JPWO2009084425A1 (ja) | 2011-05-19 |
DE112008003556T5 (de) | 2011-01-20 |
TWI481160B (zh) | 2015-04-11 |
CN101911451B (zh) | 2013-03-13 |
TW200937811A (en) | 2009-09-01 |
CN101911451A (zh) | 2010-12-08 |
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