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公开(公告)号：US11870301B2
公开(公告)日：2024-01-09
申请号：US17345993
申请日：2021-06-11
发明人： Lloyd Ash
IPC分类号： H02K29/06 , H02K1/14 , H02K5/16 , H02K11/21 , H02K7/00 , H02K11/215 , H02K11/25 , H02K1/276 , H02K15/02 , H02K15/03
CPC分类号： H02K1/148 , H02K1/276 , H02K5/163 , H02K7/006 , H02K11/21 , H02K11/215 , H02K11/25 , H02K15/022 , H02K15/03
摘要： A radial flux electrical machine is disclosed. The machine comprises a body of the stator having a body that defines a longitudinal axis a substantially cylindrical inner surface and an inner volume, and having a plurality of electromagnetic elements, each of which includes a stator core of ferromagnetic material and a winding of electrically conductive material located around at least part of the stator core of the electromagnetic element, the electromagnetic elements being arranged around the inner surface of the stator, and operable to induce a magnetic flux field in a radial direction in the inner volume of the stator, and a rotor located within the inner volume of the stator, and rotatable with respect to the stator. The inner surface of the body of the stator and the electromagnetic elements of the stator define cooperating engagement features of shape that serve to prevent relative rotation between the body of the stator and the electro-magnetic elements, and which allow relative longitudinal movement between the body of the stator and the electromagnetic elements.
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公开(公告)号：US11774268B2
公开(公告)日：2023-10-03
申请号：US17026456
申请日：2020-09-21
发明人： Masaki Tanaka
CPC分类号： G01D5/2006 , B60L3/08 , G01D18/00 , H02K29/06
摘要： A control apparatus includes: a data acquisition part that acquires correction data indicating a content regarding a correction process which corrects an error of an angle at which a rotation angle sensor that measures a rotation angle of a rotor included in an electric motor is attached; a determination part that determines, based on the correction data, whether or not the correction process has been performed; and a control method determination part that determines, in a case where it is determined that the correction process has not been performed, that an inverter which supplies an AC current to the electric motor is controlled under a pulse-width modulation control.
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公开(公告)号：US11678056B2
公开(公告)日：2023-06-13
申请号：US17352463
申请日：2021-06-21
申请人： Raytheon Company
发明人： Curtis Kyhl , Sean Thomas
摘要： A deroll control system includes an outer housing, a detector configured to capture an image, an annular torsional flexure, at least one drive and a controller configured to control the at least one drive. The annular torsional flexure has a rotatable inner mount surface to which the detector is mounted, a fixed outer mount surface fixed to the outer housing and spaced radially apart from the rotatable inner mount surface, and a flexure region having a plurality of flexures spaced radially between the inner mount surface and the outer mount surface. The at least one drive is coupled to the inner mount surface of the torsional flexure and is configured to cause a counter-rotation of the inner mount surface and the detector about a central rotational axis perpendicular to an image plane to correct a rotation of the image as the detector is capturing the image.
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公开(公告)号：US20220271598A1
公开(公告)日：2022-08-25
申请号：US17667573
申请日：2022-02-09
申请人： Nidec Corporation
发明人： Ryo KAMIZATO
摘要： A motor includes a drive source assembly including a first wiring, a rotation detector including a second wiring, and a motor housing. The motor housing includes a first motor housing that accommodates at least a portion of the drive source assembly, and a second motor housing that accommodates at least a portion of the rotation detector. The first motor housing includes a first penetration portion that radially penetrates the circumferential wall portion of the first motor housing and is open to one axial side, and the second motor housing includes a second penetration portion that radially penetrates the circumferential wall portion of the second motor housing and is open to another axial side. The first wiring is lead out to the outside of the first motor housing via the first penetration portion, and the second wiring is lead out to the outside of the second motor housing via the second penetration portion.
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公开(公告)号：US11359936B2
公开(公告)日：2022-06-14
申请号：US16925901
申请日：2020-07-10
IPC分类号： H02K11/215 , G01D5/14 , G01D5/246 , G01D5/245 , G01B7/30 , G01D5/16 , G01B7/315 , H02K11/21 , H02K29/06 , H02K29/08
摘要： A system is provided with a magnetic field sensor being positioned in a magnetic field of a magnet that is coupled to a rotatable driving shaft. The magnetic field sensor is configured to sense a rotation of the magnetic field in response to a rotation of the rotatable driving shaft, and generate an angle sensor signal based on an orientation angle of the magnetic field. The angle sensor signal includes angular values that represent an absolute orientation angle of the rotatable driving shaft. The system includes a memory storing a mapping of values of a patterned signal to the angular values, electronic circuitry configured to generate, based on the angular values and the stored mapping, the patterned signal, and a signal generator circuit configured to generate a signal representing the absolute orientation angle of the rotatable driving shaft based on the angle sensor signal.
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公开(公告)号：US11152875B2
公开(公告)日：2021-10-19
申请号：US16963888
申请日：2018-12-11
摘要： A multigroup, multiphase rotary electric machine control device including: a control target calculator to calculate an initial current command value of each phase based on a torque command value; a correction coefficient calculator to calculate a per-group correction coefficient corresponding to each group from a spatial mode M (M is 0 or a positive integer) of an electromagnetic force caused by magnetic flux density variation with respect to a rotational periodicity at the time of rotation of the multigroup, multiphase rotary electric machine; and a current command value corrector to calculate a current command value of the each phase, which is corrected based on the initial current command value and the per-group correction coefficient.
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公开(公告)号：US11121652B2
公开(公告)日：2021-09-14
申请号：US16724736
申请日：2019-12-23
申请人： Robert Bosch GmbH
发明人： Dominik Denz , Haithem Fkaier
IPC分类号： H02K29/06 , H02P6/18 , H02P29/024 , H02P8/36
摘要： A method for determining an interrupted motor phase of an electric motor having at least three windings by means of a control unit is disclosed, wherein voltages induced in the windings are determined on outer conductors of the electric motor by means of at least one measuring unit, wherein the measuring unit is connected to at least one outer conductor of the electric motor via at least one resistor, the induced voltages of the outer conductors of the electric motor are compared with one another, and an interrupted motor phase is registered if the induced voltage differs or if a frequency of the induced voltage differs. A control unit, a computer program and a machine-readable storage medium are also disclosed.
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公开(公告)号：US11075595B2
公开(公告)日：2021-07-27
申请号：US16719212
申请日：2019-12-18
发明人： Stephen Steg , Matthew James Carton
IPC分类号： H02K29/06 , H02P6/10 , H02K11/215 , H02K21/24 , B64G1/28 , B64G1/36 , H02K1/27 , H02K21/14 , H02K1/14
摘要： The present disclosure relates to an axial flux motor comprising a stator and a rotor. The stator comprises a first motor coil, a second motor coil, a first hall sensor, and a second hall sensor, and the rotor comprises a rotor platform member, an actuator magnet array arranged in an alternating axial polarity arrangement, a trigger magnet array, and a rotating magnetic return path member.
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公开(公告)号：US20210135547A9
公开(公告)日：2021-05-06
申请号：US16714067
申请日：2019-12-13
发明人： Peter John Zegarelli
摘要： An oral appliance is provided for delivering a medicament to at least a portion of teeth and/or soft tissue areas inside a mouth. The oral appliance contains an interior surface having a medicament disposed in or on at least a portion of and/or the entire interior surface of the oral appliance. The interior surface of the oral cavity is formed to fit contours of at least the portion of the teeth and/or soft tissue areas inside the oral cavity and is configured for holding the medicament in contact with at least the portion of the teeth and/or soft tissue areas inside the oral cavity to deliver the medicament to strategic areas in need of treatment. In some embodiments, computer, network and computer readable storage media are provided.
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公开(公告)号：US10052730B2
公开(公告)日：2018-08-21
申请号：US15563328
申请日：2016-03-31
申请人： Peng Cheng , Bengt Oelmann , Stefan Haller
发明人： Peng Cheng , Bengt Oelmann , Stefan Haller
摘要： A variable-speed direct current motor comprising a stator (22), a rotor (23) arranged within the stator, and a motor drive device (40) arranged partly at the stator and partly at the rotor, wherein the stator comprises a yoke (25) defining a cylindrical cavity (31), and a plurality of permanent magnets (24) arranged at the yoke, wherein the rotor comprises a cylindrical core (26) and a conductor structure (47) arranged at the core, wherein the motor drive device comprises an alternating current transformer (41) having a primary winding (42) arranged at the stator and a secondary winding (43) arranged at the rotor, a rectifier device (44) arranged at the rotor and connected with the secondary winding, a direct current supply device (45) arranged at the rotor (23) and connected with the rectifier device (44), and with the conductor structure (47), and an operation control device (48) comprising a first unit (49) arranged at the rotor (23) and a second unit (50) arranged externally of the rotor and wirelessly communicating with the first unit.
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