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公开(公告)号：US11381140B2
公开(公告)日：2022-07-05
申请号：US17032713
申请日：2020-09-25
申请人： FANUC CORPORATION
发明人： Masao Fukuda , Nobuyuki Ootake
摘要： A motor includes a sheet-like gasket for sealing the gap between a stator core and an encoder. The gasket has a structure including a metal plate and a sealing member covering the metal plate, and the gasket includes a first portion that is disposed at least between the end face on one end side of the stator core and the encoder and a second portion that has a structure including the sealing member with no metal plate and extends inward from the first portion to contact the projection.
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公开(公告)号：US20220195847A1
公开(公告)日：2022-06-23
申请号：US17127072
申请日：2020-12-18
发明人： James REDMOND , Zackery SOBIN
摘要： Systems and methods for providing power to devices at a well site employ a linear alternator to generate power at a well site. The linear alternator is mounted on a pump at the well site and uses the up-and-down motion of the pump to generate power. The pump may be a nodding donkey head pump or other sucker rod pump mechanisms that operate based on linear vertical motion. The linear vertical motion drives a linear rotor back and forth through a linear stator to induce current in the linear alternator. This allows the linear alternator to convert a portion of the mechanical work performed by the pump into electrical energy that can be supplied to the devices. In some embodiments, the pump-mounted linear alternator can be equipped with a position sensor to directly measure a vertical position of the pump as the alternator travels up and down with the pump.
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公开(公告)号：US11333243B2
公开(公告)日：2022-05-17
申请号：US16847992
申请日：2020-04-14
申请人： DENSO CORPORATION
发明人： Kazunori Shimada , Mikine Kume , Hiroyuki Kado , Shinji Naito
摘要： A rotary actuator is used in a shift-by-wire system for a vehicle. The actuator includes a motor, a case, a controller, a cover, and a cover fixing member. The case houses the motor. The controller is disposed in an opening of the case and controls the motor. The cover closes the opening of the case. The cover fixing member fixes the cover to the case. The cover fixing member fixes the cover to the case at a position outside of a board of the controller. The board is clamped between the cover and the case.
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公开(公告)号：US11323002B2
公开(公告)日：2022-05-03
申请号：US16892528
申请日：2020-06-04
申请人： DENSO CORPORATION
发明人： Masayuki Echizen , Seigo Shinoda
摘要： A rotary electric machine includes magnetic poles to which a coil is attached. A connection portion between a conductive member and a coil end of the coil is arranged in an inter-pole gap between the magnetic poles. The rotary electric machine may include a rotor and a stator. The magnetic poles may be magnetic poles of the stator.
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公开(公告)号：US11316418B2
公开(公告)日：2022-04-26
申请号：US16825255
申请日：2020-03-20
申请人： LEINE & LINDE AB
发明人： Richard Arnstein
摘要： A rotary encoder includes a rotor and a stator. The rotor and the stator are arranged in the rotary encoder such that, when the rotary encoder is arranged on a machine that includes a shaft having a rotation axis, a rotation of the rotor in relation to the stator about the rotation axis of the shaft is allowed, a relative movement between the rotor and the stator along the rotation axis of the shaft is restricted to a predetermined distance, and a movement of the rotor in relation to the shaft along the rotation axis of the shaft is allowed. Additionally, movement of the stator in relation to the machine along the rotation axis of the shaft may be allowed.
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公开(公告)号：US11314037B2
公开(公告)日：2022-04-26
申请号：US16409187
申请日：2019-05-10
申请人： TDK TAIWAN CORP.
发明人： Liang-Ting Ho , You-Zhen Lin , Sin-Jhong Song
摘要： An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed portion, a movable portion, a driving assembly, a first circuit assembly, and a second circuit assembly. The fixed portion includes a housing, a frame, and a base. The frame is affixed to the housing. The base is fixedly connected to the housing. The movable portion is movably connected to the fixed portion, and carries an optical element, wherein the optical element has an optical axis. The driving assembly drives the movable portion to move relative to the fixed portion. The first circuit assembly is disposed in the frame, and electrically connected to the driving assembly. The second circuit assembly is disposed on the base.
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公开(公告)号：US20220120787A1
公开(公告)日：2022-04-21
申请号：US17378172
申请日：2021-07-16
申请人： Ria M. PATEL
发明人： Ria M. PATEL
摘要： An energy measuring device made of two same size blocks. The outline of two metal ball bearings are traced onto the blocks which are then drilled out where the tracings are marked. Ball bearings are inserted into the resulting holes. With the bearings fitted in place a dowel is inserted through the centers of the bearings to check out the fitting. The dowel is then removed and replaced with a roller. Next, a generator and gear assembly is fabricated comprising two gears and a band, the selected gears having a 10:1 ratio. A string is now loosely attached to the dowel so it can be wound up and released to measure an amount of energy created. The string is marked from 12-24 inches, in 6 inch increments, and these markings are used to control speed and turns for tests related to harnessing otherwise wasted energy.
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公开(公告)号：US11294143B2
公开(公告)日：2022-04-05
申请号：US16843326
申请日：2020-04-08
申请人： TDK TAIWAN CORP.
发明人： Chao-Hsi Wang , Chao-Chang Hu , Kuen-Wang Tsai , Chih-Wei Weng , Sin-Jhong Song
IPC分类号： H04N5/225 , G03B9/40 , G02B7/09 , G02B27/64 , G03B13/36 , H02K41/035 , G03B5/00 , H02K11/21 , H02K37/04
摘要： An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed portion, a movable portion, and a driving assembly. The movable portion is movably disposed on the fixed portion. The driving assembly is disposed on the fixed portion and drives the movable portion to move relative to the fixed portion.
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公开(公告)号：US20220097798A1
公开(公告)日：2022-03-31
申请号：US17420697
申请日：2019-12-26
发明人： Kenji TSUKAMOTO , Satoshi HONDA
摘要： To allow assist control according to the pedal force to be performed in a bicycle electric power assist device without complicating the structure for detecting the pedal force and/or requiring modification of the bicycle, a bicycle electric power assist device (50) includes: an electric motor (54) connected in a torque transmitting relationship to a crank arm (26) or a crankshaft (24) driven by a pedal force from pedals (30) via the crank arm (28); a battery (102) to be mounted on a bicycle to serve as a power supply for the electric motor (54); a control unit (100) configured to control operation of the electric motor (54); a rotation angle sensor (110) configured to detect a crank rotation angle position of the crankshaft (24); and a current sensor (116) configured to detect a motor current of the electric motor (54), wherein the control unit (100) includes: a pedal force estimation/calculation unit (120) configured to estimate the pedal force of the pedals (30) from a difference between the motor current in a first crank rotation angle position and the motor current in a second crank rotation angle position which is different from the first crank rotation angle position; and a motor drive control unit (126) configured to control a drive current of the electric motor (54) according to the pedal force estimated by the pedal force estimation/calculation unit (120).
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公开(公告)号：US11286983B2
公开(公告)日：2022-03-29
申请号：US15737542
申请日：2016-05-11
发明人： Rafal Jastrzebski , Pekko Jaatinen
IPC分类号： H02P8/38 , H02P7/29 , F16C32/04 , H02P4/00 , H02P27/08 , H02K11/215 , H02P25/16 , H02P29/40 , H02K11/21 , G05B17/02 , H02K7/09
摘要： An electrical drive includes an electrical machine, a first converter stage connected to terminals of stator phase-windings of the electrical machine, and a second converter stage connected to intermediate points of the stator phase-windings. A control device determines first component currents and second component currents so that torque is generated in accordance with electrical machine control and magnetic levitation force is directed to a rotor of the electrical machine in accordance with levitation control when portions of the phase-windings between the terminals and the intermediate points carry both the first and second component currents and the other portions of the phase-windings carry the first component currents. The reference currents for the first converter stage are determined based on the first and second component currents, and the reference currents for the second converter stage are determined based on the second component currents.
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