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公开(公告)号：US11632071B2
公开(公告)日：2023-04-18
申请号：US17424566
申请日：2020-02-27
摘要： A motor drive device that drives motors with one inverter includes a step-out control unit that detects step-out in which the operating frequency of at least one of the motors does not match the inverter output frequency, or the operating frequency of at least one of the motors does not match the operating frequency of another one of the motors, and stops the motors by switching an energization state of the inverter when at least one of the motors is out of step.
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公开(公告)号：US20230099477A1
公开(公告)日：2023-03-30
申请号：US17910029
申请日：2021-03-10
申请人： Festool GmbH
发明人： Patrick Schön , Markus With
IPC分类号： H02P6/16 , H02K7/08 , H02K7/14 , H02K11/215 , H02K21/16
摘要： A drive motor (10) for a vacuum cleaner or a machine tool, wherein the drive motor (10) includes a stator (20) with a stator coil arrangement (26), and a rotor (30) wherein a sensor arrangement (60) is arranged in a stationary manner with respect to the stator in order to detect a respective angle of rotation position of the rotor (30) with respect to the stator, said sensor arrangement comprising at least two sensors (67A, 67b, 67C). It is provided that the at least two sensors are configured to detect two waves of a magnetic rotating field (FB) of the rotor (30) wherein the sensors generate the switching signals in a manner dependent on a wave of the magnetic rotating field (FB) exceeding or undershooting a switching threshold (SH, SL) of the sensor (67A, 67b, 67C).
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公开(公告)号：US11603927B2
公开(公告)日：2023-03-14
申请号：US17012575
申请日：2020-09-04
发明人： Koji Sakaguchi , Masahiko Akiyama , Masashi Misawa , Kenshi Masuo
IPC分类号： H02P23/18 , F16H61/32 , F16H61/24 , F16H61/28 , F16H61/02 , H02P23/16 , H02P29/00 , H02P25/026 , H02P6/16
摘要： A shift range control apparatus controls a shift range switching system that switches shift ranges by controlling driving of a motor. This control apparatus calculates a motor angle based on a motor rotation angle signal, acquires an output shaft signal based on a rotation position of an output shaft from an output shaft sensor, sets a target rotation angle based on a target shift range and the output shaft signal, and controls driving of the motor such that the motor angle becomes the target rotation angle. The control apparatus sets the target rotation angle to a target limit value, in response to the target rotation angle that is set based on the output shaft signal being a value at which rotation occurs that is further toward a back side in a rotation direction than the target limit value that is set based on shift ranges before and after switching.
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公开(公告)号：US11583949B2
公开(公告)日：2023-02-21
申请号：US17764984
申请日：2020-09-18
发明人： Jiayou Wang , Jie Zhu , Tianwei Wang , Wei Wang , Kai Wang , Da Jiang , Biao Wang , Yuqing Jiang , Jianjian Pang , Luxiao Zhang
IPC分类号： B23K9/28 , H02K11/22 , H02K5/20 , B23K9/16 , H02K5/14 , H02K7/00 , H02K9/19 , H02K9/28 , H02P6/16
摘要： A swing/rotating gas metal arc welding torch, include a hollow shaft motor and a feeder panel. An upper extending shaft of the feeder panel penetrates through a brush mechanism, and is fixedly connected to a lower extension shaft of the hollow shaft by means of a coupling, and a lower extending shaft of the feeder panel penetrates through a support bearing mounted in a brush base and is then connected to an eccentric or bent conductive rod mechanism; the motor base is fixedly connected to the brush base by means of connecting screws, and a welding shielding gas is provided and welding torch cooling is achieved by means of inner holes of the connecting screws as well as a built-in gas passage and a cooling water passage of the brush base; the length of the conductive rod mechanism is adjusted by means of modulation or extension and retraction.
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公开(公告)号：US20220408023A1
公开(公告)日：2022-12-22
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：US20220407396A1
公开(公告)日：2022-12-22
申请号：US17825838
申请日：2022-05-26
发明人： Jae Hoon YOON
摘要： A motor system includes a motor including a motor cover and a shaft of which a first end portion is exposed to an outside of the motor cover, a permanent magnet provided at the exposed first end portion of the shaft, and a rotation angle detector disposed at a periphery of the permanent magnet, and configured to detect a magnetic field change due to rotation of the permanent magnet during rotation of the shaft to detect a rotation angle of the motor.
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公开(公告)号：US11533007B2
公开(公告)日：2022-12-20
申请号：US17221629
申请日：2021-04-02
发明人： Wenbin Ao , Bin Chen , Shengyu Xiao , Wenxian Wu , Yanzhang Wang , Xiaofei Zhang
摘要： A method and a system for detecting a logic level of a rotor of a motor, and a motor are disclosed. The method comprises: obtaining an analog voltage output by a position sensor for a winding of the motor; setting a first commutation voltage and a second commutation voltage; generating a logic level according to the analog voltage, the first commutation voltage and the second commutation voltage; and performing angle correction on the logic level according to a first angle corresponding to the first commutation voltage and a second angle corresponding to the second commutation voltage. The first commutation voltage is a commutation voltage for triggering a rising edge, and the second commutation voltage is a commutation voltage for triggering a falling edge. This method may accurately identify the logic level corresponding to the motor rotor, improve uniformity of a commutation voltage and prevent fluctuations in motor speed.
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公开(公告)号：US20220388088A1
公开(公告)日：2022-12-08
申请号：US17764984
申请日：2020-09-18
发明人： Jiayou WANG , Jie ZHU , Tianwei WANG , Wei WANG , Kai WANG , Da JIANG , Biao WANG , Yuqing JIANG , Jianjian PANG , Luxiao ZHANG
IPC分类号： B23K9/28 , B23K9/16 , H02K5/14 , H02K5/20 , H02K7/00 , H02K9/19 , H02K9/28 , H02K11/22 , H02P6/16
摘要： A swing/rotating gas metal arc welding torch, include a hollow shaft motor and a feeder panel. An upper extending shaft of the feeder panel penetrates through a brush mechanism, and is fixedly connected to a lower extension shaft of the hollow shaft by means of a coupling, and a lower extending shaft of the feeder panel penetrates through a support bearing mounted in a brush base and is then connected to an eccentric or bent conductive rod mechanism; the motor base is fixedly connected to the brush base by means of connecting screws, and a welding shielding gas is provided and welding torch cooling is achieved by means of inner holes of the connecting screws as well as a built-in gas passage and a cooling water passage of the brush base; the length of the conductive rod mechanism is adjusted by means of modulation or extension and retraction.
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公开(公告)号：US11522477B2
公开(公告)日：2022-12-06
申请号：US17149291
申请日：2021-01-14
发明人： Jakub Chmelar , Jan Scheirich , Martin Vagner , Stanislav Hasik
摘要： A contactless power supply and motor control system includes a pulse width modulator, a rotary transformer, a demodulator circuit, a motor driver, and a motor. The pulse width modulator supplies a first pulse width modulated (PWM) signal that has a duty cycle and a first amplitude. The rotary transformer receives the PWM signal. The secondary winding is rotatable relative to the primary winding and supplies a second PWM signal having the duty cycle and a second amplitude. The demodulator circuit is rotatable with the secondary winding and supplies a demodulated direct current (DC) voltage having a DC voltage amplitude. The motor driver is rotatable with the secondary winding and the demodulator circuit and controllably supplies motor current. The motor receives the motor current and rotates at a rotational speed.
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公开(公告)号：US11505243B2
公开(公告)日：2022-11-22
申请号：US16710956
申请日：2019-12-11
申请人： Showa Corporation
发明人： Kosuke Sano , Junya Hirata
摘要： A steering control device includes: an electric motor configured to apply an assist force to steering of a steering wheel; a torque sensor configured to detect steering torque of the steering wheel; a base target current setting unit configured to set a base driving force of the electric motor on the basis of the steering torque detected by the torque sensor; and an addition determination unit configured to determine whether a driving force larger than the base driving force is to be set, on the basis of a rotation speed of the electric motor.
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