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公开(公告)号：US20240429804A1
公开(公告)日：2024-12-26
申请号：US18680659
申请日：2024-05-31
Applicant: SHIN-ETSU CHEMICAL CO., LTD.
Inventor： Akira GOTO
Abstract: A magnetic circuit configuration component for a VCM includes a pair of yokes, a pair of magnets provided on inner surfaces of the yokes, and a support member or a support column that maintains a gap between the magnets to fix the yokes to each other, the magnet is a rare earth sintered magnet having a surface on which coating is performed, a composition of the magnet consists of, by weight, R (R is one or more types of rare earth elements selected from Nd, Pr, Dy, Tb, Ce, La, and Gd) of 28% to 34%, Co of 2% or less, B of 0.5% to 2%, one or more types selected from Ni, Nb, Al, Ti, Zr, Cr, V, Mn, Mo, Si, Sn, Ga, Cu, and Zn as an additive of 2% or less, and the balance of Fe, and the coating includes a metal plating layer of a predetermined thickness and a metal oxide layer and/or a metal nitride layer of 0.01 μm to 2 μm.
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公开(公告)号：US20240235357A9
公开(公告)日：2024-07-11
申请号：US18278004
申请日：2021-04-21
Applicant: Mitsubishi Electric Corporation
Inventor： Masahito MIYOSHI , Yusuke SAKAMOTO , Shinichi FURUTANI
CPC classification number: H02K41/065 , H02K11/21
Abstract: A bearingless motor includes a rotor, a stator for applying support force and torque to the rotor, and a first displacement sensor and a second displacement sensor for detecting a radial position of the rotor. The stator includes a motor winding for generating a magnetic flux having p poles to produce the torque, and a support winding for generating a magnetic flux having p±2 poles or two poles to produce the support force. The first displacement sensor and the second displacement sensor are disposed at positions axially different from each other.
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公开(公告)号：US20240030798A1
公开(公告)日：2024-01-25
申请号：US18338158
申请日：2023-06-20
Applicant: Nodal Film Systems LLC
Inventor： Boyd Randolph Hobbs
CPC classification number: H02K41/065 , H02K3/26 , H02K2203/03 , H04N23/687
Abstract: Embodiments of the inventive subject matter are directed to PCB stator motors having radially positioned wheel-based bearings for the rotor, including PCB stator motors that are included in camera stabilizing and control systems. PCB stator motors of the inventive subject matter feature a rotor that creates a slot into which a PCB stator is disposed. Surrounding that rotor is a set of wheels having, e.g., grooves into which an outer edge of the rotor can be disposed. The set of wheels enables the rotor to rotate smoothly as a result of a motor controller activating the PCB stator. In some embodiments, an annular roll motor is accompanied by one or more tilt motors to create a camera system that can, e.g., actively stabilize a camera that is disposed at least partially within the roll motor's interior space.
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公开(公告)号：US11588387B2
公开(公告)日：2023-02-21
申请号：US16999539
申请日：2020-08-21
Applicant: HONEYWELL INTERNATIONAL INC.
Inventor： Deepak Pitambar Mahajan , Varun Ananda , Subhashree Rajagopal , Renukaprasad N
Abstract: A hybrid spherical motor includes a first gear box, a second gear box, a yoke arm, a brushless direct current (BLDC) motor, a spherical stator, and a spherical armature. The split armature, in response to the spherical stator being energized, rotates about a first rotational axis, thereby causing the first gear box input connection and the second gear box input connection to rotate about the first rotational axis, and the yoke arm rotates about the first rotational axis in response to the first gear box input connection and the second gear box input connection being rotated about the first rotational axis, whereby the BLDC motor rotates about the first rotational axis.
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公开(公告)号：US20220376597A1
公开(公告)日：2022-11-24
申请号：US17882135
申请日：2022-08-05
Applicant: Tau Motors, Inc.
Inventor： Matthew J. Rubin , Walter Wesley Pennington, III , Adam Daniel Ambrecht , Gregory Gordon Stevenson
Abstract: An electric motor has a stator mechanically coupled to the rotor by a nutating traction interface, such that during nutation of the rotor with respect to the stator a tilt axis of the rotor progresses about the axis of rotation of the output shaft. The rotor and a surface of the stator bound a dynamic gap across which a magnetic field is produced by electrical activation of the motor to generate a force between the rotor and the stator. The traction interface and the gap are arranged such that, in a plane containing the axis of rotation of the output shaft, the traction interface is angled with respect to the stator surface bounding the gap. The rotor is connected to the output shaft by a tiltable connection such as a gimbal.
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Patent Agency Ranking
公开(公告)号：US11451124B2
公开(公告)日：2022-09-20
申请号：US16963950
申请日：2019-05-23
Applicant: Tau Motors, Inc.
Inventor： Matthew J. Rubin , Walter Wesley Pennington, III , Adam Daniel Ambrecht , Gregory Gordon Stevenson
Abstract: An electric motor has a stator mechanically coupled to the rotor by a nutating traction interface, such that during nutation of the rotor with respect to the stator a tilt axis of the rotor progresses about the axis of rotation of the output shaft. The rotor and a surface of the stator bound a dynamic gap across which a magnetic field is produced by electrical activation of the motor to generate a force between the rotor and the stator. The traction interface and the gap are arranged such that, in a plane containing the axis of rotation of the output shaft, the traction interface is angled with respect to the stator surface bounding the gap. The rotor is connected to the output shaft by a tiltable connection such as a gimbal.
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公开(公告)号：US20210367477A1
公开(公告)日：2021-11-25
申请号：US17354865
申请日：2021-06-22
Applicant: QM Power, Inc.
Inventor： Charles J. Flynn
Abstract: An actuator has a first stator with four first poles, a second stator with four second poles aligned with the four first poles, at least one permanent magnet between the first stator and the second stator, four armatures positioned at terminal ends of the aligned four first poles and four second poles and coils wrapped around the first stator and the second stator. A controller selectively applies current to the coils to cause flux created by the at least one permanent magnet to traverse through selective poles of the first stator and the second stator to selectively alter air gap sizes associated with the four armatures.
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公开(公告)号：US11018569B1
公开(公告)日：2021-05-25
申请号：US16847739
申请日：2020-04-14
Applicant: Robert Herrin , Sean R. Khant
Inventor： Robert Herrin , Sean R. Khant
Abstract: The torque augmentation device has two primary embodiments. The first embodiment is two rotors, the rotors including rings of permanent magnets. The two rotors are angled with respect to each other. The magnetic field is disrupted on the bottom half by a ferrous flux diversion plate. With the forces unbalanced between the upper and lower halves of the rotors, rotation will result, thus augmenting the torque production of any associated rotational device. The second embodiment uses a straight shaft, with a single central rotor, both sides of the rotor covered in magnets. In place of adjacent rotors, the second half of the magnets is placed on fixed plates, one on each side of the central rotor. The fixed plates are set at an angle with respect to the central rotor, creating the unbalanced forces that cause rotation.
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公开(公告)号：US20210050767A1
公开(公告)日：2021-02-18
申请号：US16594195
申请日：2019-10-07
Applicant: Po-Hsun Yen , Shang-Jung Lee , Yung-Cheng Chang , Sung-Liang Hou
Inventor： Po-Hsun Yen , Shang-Jung Lee , Yung-Cheng Chang , Sung-Liang Hou
Abstract: A motor comprising a stator and a rotor; the stator includes a first stator, a second stator, and a third stator; the stators each include at least one stator coil; the rotor includes a magnetic element, a first bearing, a second bearing, and a shaft; the stators generating a superimposed magnetic field together causes the magnetic element to rotate; when the magnetic element rotates in the first plane, the outer ring of the first bearing rotates; the center of the first bearing is located in a plane where the second bearing is located, and when the magnetic element rotates in the second plane, the inner ring of the second bearing rotates; the central axis of the shaft passes through the center of the first bearing; wherein the shaft is rotatably fixed to the first bearing and connected to the second bearing; the magnetic element located in where the central axis of the first bearing meets the central axis of the second bearing, the normal vector of the first plane is parallel to the axial direction of the shaft; the normal vector of the second plane is perpendicular to the axial direction of the shaft.
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公开(公告)号：US10855217B2
公开(公告)日：2020-12-01
申请号：US16396075
申请日：2019-04-26
Applicant: GM Global Technology Operations LLC
Inventor： Alireza Fatemi , Derek F. Lahr
IPC: H02P25/086 , H02K11/21 , H02K11/27 , H02K41/06 , H02K11/33
Abstract: An electrical system includes a power inverter module (PIM) connected to DC and AC voltage buses and having a pair of inverter phase legs, at least one of which includes a plurality of semiconductor switche. A cycloidal electric machine with plurality of electrical phases is connected to the PIM via the AC voltage bus, and has a stator and a rotor with eccentric stator and rotor axes. The rotor moves with two degrees of freedom, including rotating motion about the rotor axis and orbiting motion about the stator axis. A controller applies, for each respective phase, a phase-specific offset value to a carrier signal and to a voltage reference signal. This generates a modified carrier signal and a modified reference signal, respectively, which in turn generate a pulse width modulation (PWM) signal. The electric machine is powered via the PIM by energizing the semiconductor switches using the PWM signal.
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