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公开(公告)号：US12013263B2
公开(公告)日：2024-06-18
申请号：US18256426
申请日：2021-12-10
发明人： Akira Matsunawa
CPC分类号： G01D5/2046 , G01B7/30
摘要： A resolver includes: a sine exciting coil and a cosine exciting coil; a detecting coil that is provided to a rotor and is placed facing the sine exciting coil and the cosine exciting coil; an exciting coil forming a closed circuit, together with the detecting coil, in the rotor; and a sine detecting coil and a cosine detecting coil that are provided to a stator, are placed facing the exciting coil, and transmit alternating current signals that are 90 electrical degrees apart in phase. The multiplication factor of angle of the sine detecting coil, the cosine detecting coil, and the exciting coil is different from the multiplication factor of angle of the sine exciting coil, the cosine exciting coil, and the detecting coil.
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公开(公告)号：US20180313667A1
公开(公告)日：2018-11-01
申请号：US15770378
申请日：2015-12-29
发明人： Won-Yong LEE , Byung-Cheol NA , Da-Hee SIM , Seong-Wook LEE , Yeon-Muk CHOI
CPC分类号： G01D5/2046 , G01B7/30 , G01D5/20 , G01D5/245 , H02K24/00
摘要： Disclosed is a resolver, which includes a stator made of a magnetic material and having a plurality of teeth and a plurality of slots alternately formed at an inner side thereof; insulation covers respectively having a tooth insulating unit formed at an inner side thereof corresponding to the teeth and mounted to the stator at both upper and lower surfaces of the stator; and coils wound on the teeth with the tooth insulating unit being interposed therebetween, wherein a coil occupying ratio per slot, which is defined by the following equation and represents a ratio of area occupied by the coils in a slot to which the insulation covers are fixed, is 35% or below: Coil occupying ratio per slot=(area occupied by coils in a single slot)/(area of a single slot). Equation
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3.发明授权公开(公告)号：US10084472B1
公开(公告)日：2018-09-25
申请号：US15909248
申请日：2018-03-01
发明人： Hiroshi Kushihara , Kazuyuki Ishibashi , Hirofumi Maruyama , Katsutoshi Toyotake , Shinichi Arai , Toshiki Muramatsu
CPC分类号： H03M1/485 , G01D3/08 , G01D5/2046 , G01D5/2073 , G01D5/24457 , G01D5/2448 , G01P3/44 , G01P3/488 , G01R31/2829 , H02K24/00 , H02P6/16
摘要： The present invention relates to a phase modulation-type redundant two-phase-output resolver, an excitation signal (100) is applied to an excitation winding (50) of an annular stator (21) having a VR-type rotor (20) disposed therein, and a two-phase output signal (101) is outputted from first and second output windings (43, 44) that are provided in the annular stator (21), the excitation winding (50) is made up of first and second excitation windings (40, 41) of mutually different phases, and the excitation signal (100) has two phases, and even in a case where a break occurs in only any one winding from among the first and second excitation windings (40, 41) and the first and second output windings (43, 44), at least a one-phase output signal can be obtained.
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公开(公告)号：US10082407B2
公开(公告)日：2018-09-25
申请号：US15378599
申请日：2016-12-14
发明人： Takaaki Ochiai , Takuji Yamada , Ichiro Sasada , Takuya Matsuda , Jisho Oshino
CPC分类号： G01D5/2033 , G01B7/30 , G01D5/2046
摘要： An angle detecting apparatus using a resolver disposed at a position where an external magnetic field is present on one side in an axial direction includes a rotor that is rotatable and made of a magnetic material, a magnetic permeability of the magnet material having an uniaxial anisotropy as an entirety, and a stator disposed to face the rotor, the stator including an exciting coil and a detection coil for detecting a magnetic flux generated by the exciting coil, the rotor being provided between the stator and the external magnetic field.
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公开(公告)号：US20180216967A1
公开(公告)日：2018-08-02
申请号：US15911808
申请日：2018-03-05
IPC分类号： G01D5/20
CPC分类号： G01D5/2046 , G01D5/145 , G01D5/2073
摘要： A linear and curvilinear encoder is provided in which absolute mechanical position and high resolution position determination can be obtained using a cart having a mover with “hybrid” teeth, configured in a curvilinear profile or shape, moving along a curvilinear track with a stator having teeth. The absolute mechanical position and high resolution position determination can be detected on the track by applying an excitation signal to a coil surrounding particular teeth of the stator to produce an electromagnetic (EM) field which can be influenced by the profile or shape of the teeth of the mover. A resulting pick-up signal can then be detected in a pick-up coil surrounding particular teeth of the stator with different harmonics in the pick-up signal corresponding to harmonics of the profile or shape of the teeth.
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6.发明授权公开(公告)号：US09958297B2
公开(公告)日：2018-05-01
申请号：US15414686
申请日：2017-01-25
申请人： Robert Bosch GmbH
发明人： Dayo Oshinubi , Stefan Leidich
CPC分类号： G01D5/204 , F01L1/047 , F01L1/34 , F01L2820/041 , G01D5/2013 , G01D5/2046
摘要： A sensor device for ascertaining at least one rotation characteristic of a rotating element is provided. The sensor device includes at least one trigger wheel which is able to be connected to the rotating element. The rotating element and the trigger wheel have an axis of rotation. The sensor device includes at least one coil array. The coil array encompasses at least one excitation coil and at least one receiver coil. The coil array is situated on at least one circuit carrier. The trigger wheel as a trigger wheel profile. The sensor device is designed to ascertain a change in an inductive coupling between the excitation coil and the receiver coil as a function of a position of the trigger wheel. The circuit carrier is situated coaxially with the axis of rotation of the trigger wheel. The circuit carrier surrounds the trigger wheel at least partially in a circular manner.
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公开(公告)号：US09912268B2
公开(公告)日：2018-03-06
申请号：US14838782
申请日：2015-08-28
发明人： Satoshi Yokoo , Atsuhiro Ichikawa
CPC分类号： H02P6/182 , G01D5/2046 , H02P6/187
摘要： In accordance with an embodiment, a sensor-less detection circuit is provided that includes a first voltage adjustment circuit coupled for receiving an induced voltage and a second voltage adjustment circuit coupled for receiving a common voltage. A differential amplifier has an inverting input terminal coupled to the first voltage adjustment circuit and a noninverting input terminal coupled to the second voltage adjustment circuit. In accordance with another embodiment, a method for detecting a motor rotor position is provided that includes receiving a first back electromotive force that is at a first voltage level and shifting the first back electromotive force from the first voltage level to a second voltage level. The first back electromotive force is filtered to generate a first filtered voltage; and a first motor rotor position signal is generated in response to comparing the first filtered voltage with a reference voltage.
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公开(公告)号：US20170350728A1
公开(公告)日：2017-12-07
申请号：US15603472
申请日：2017-05-24
CPC分类号： G01D5/204 , G01B7/14 , G01D5/2046 , G01D5/2053 , G01D5/2275
摘要： A scale for inductive position measurement along a measurement direction X includes a support channel made of electrically conductive material having two interconnected spaced-apart side walls extending parallel to the measurement direction X and enclosing an interstitial space therebetween. A succession of first graduations made of electrically conductive material are disposed on the support channel, located in the interstitial space opposite and spaced from one of the two side walls and extending parallel to the measurement direction X. A succession of second graduations made of electrically conductive material are disposed on the support channel, located in the interstitial space opposite and spaced from the other one of the two side walls and extending parallel to the measurement direction X. The succession of first graduations and the succession of second graduations form a gap configured to receive a scanner operable to inductively scan the first graduations and the second graduations.
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公开(公告)号：US20170219385A1
公开(公告)日：2017-08-03
申请号：US15423925
申请日：2017-02-03
发明人： Rui Feng QIN , Cheng Shun DU , Ning SUN , Xing LIU
IPC分类号： G01D5/20 , B62D6/10 , B62D5/04 , H02K11/225 , H02K11/01
CPC分类号： G01D5/204 , B62D5/0463 , B62D6/10 , G01D5/2046 , H02K5/225 , H02K11/01 , H02K11/225
摘要： The invention relates to a motor and a resolver thereof. The resolver includes a resolver stator (70), a resolver rotor (80). The resolver includes (70) a plurality of resolver stator teeth (73) and resolver stator windings (75) wound around the resolver stator teeth (73). The resolver rotor (75) includes a resolver rotor core (81) received in a space surrounded by the resolver stator teeth (73) and capable of rotating around a shaft axis. The resolver stator windings (75) includes first output windings wound around each of the resolver stator teeth (73) by a first number of turns, second output windings wound around each of the resolver stator teeth by a second number of turns, and exciting windings wound around each resolver stator teeth by a third number of turns.
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公开(公告)号：US09716421B2
公开(公告)日：2017-07-25
申请号：US15105129
申请日：2015-01-14
申请人： NSK LTD.
发明人： Kazuhiro Ohira , Masaki Kuwahara
IPC分类号： G01D5/20 , H02K11/225 , H02K24/00 , H02K37/04
CPC分类号： H02K11/225 , G01D5/2046 , H02K24/00 , H02K37/04
摘要： A resolver device includes a stator core and a rotor core supported so as to be freely rotatable with respect to the stator core and configured such that a reluctance component in a gap between the rotor core and the stator core changes in accordance with a relative angle position to the stator core. The stator core includes stator main poles and stator interpoles.
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