公开(公告)号：US20240055970A1

公开(公告)日：2024-02-15

申请号：US18496000

申请日：2023-10-27

Applicant: Canon Kabushiki Kaisha

Inventor： Masaharu Naka ,  Norihiro Suzuki ,  Satoru Deguchi

IPC: H02K41/03 ,  H02K7/06 ,  H02P6/00

CPC classification number: H02K41/031 ,  H02K7/06 ,  H02P6/006

Abstract: The disclosed linear motor includes a stator having a plurality of cores and coils that excite the plurality of cores, respectively, and a movable element having a permanent magnet and configured to move using electromagnetic force applied from the stator as driving force, each of the plurality of cores has an excitation unit wound with the coil and an acting unit configured to be magnetically coupled to the excitation unit and cause a magnetic flux applied from the excitation unit to work on the permanent magnet of the movable element, and the linear motor includes an airgap or a heat conduction reduction portion between the excitation unit and the acting unit, and the heat conduction reduction portion reduces heat conduction from the excitation unit to the acting unit more than in a case where the excitation unit and the acting unit are in direct contact with each other.

公开(公告)号：US11742738B2

公开(公告)日：2023-08-29

申请号：US17720706

申请日：2022-04-14

Applicant: IRIS DYNAMICS LTD

Inventor： Kyle A. Hagen ,  Patrick A. McFadden ,  Maximilien F. Bethune-Waddell ,  Jeffrey R. Rendell

IPC: G05B19/416 ,  H02K41/03 ,  H02K11/215 ,  H02P25/064 ,  H02P6/00 ,  H02P6/16

CPC classification number: H02K41/031 ,  H02K11/215 ,  H02P6/006 ,  H02P6/16 ,  H02P25/064

Abstract: An embodiment of a linear electric machine includes two or more phases that define a central bore, and alternating permanent magnets that are disposed within the central bore and are free to move relative the windings. An embodiment of a method for selectively powering the windings is disclosed that enables the machine to realize a commanded force, or to determine the force present by using the current within the windings and the alignment of the magnets relative to the windings.

公开(公告)号：US20230188062A1

公开(公告)日：2023-06-15

申请号：US18062027

申请日：2022-12-06

Applicant: CANON KABUSHIKI KAISHA

Inventor： TAKUMA HASHIZUME

IPC: H02P6/00 ,  H02P6/16 ,  H02P25/064 ,  H02K11/22 ,  H02K41/03 ,  B65G54/02

CPC classification number: H02P6/006 ,  B65G54/02 ,  H02K11/22 ,  H02K41/031 ,  H02P6/16 ,  H02P25/064 ,  B65G2203/0283

Abstract: A transport apparatus includes: a stator; a mover that includes a first scale and is movable along the stator in a first direction; a plurality of first detectors each of which is provided to be able to face the first scale and detects a position of the mover in a second direction crossing the first direction; and a control unit that controls position and/or attitude of the mover, the first scale and the first detector constitute an incremental encoder, wherein the plurality of first detectors are arranged at a predetermined interval along the first direction in the stator, and the control unit corrects position information of the mover by a detection value of one of the first detectors based on position information of the mover by a detection value of another of the first detectors.

公开(公告)号：US20190089225A1

公开(公告)日：2019-03-21

申请号：US16137029

申请日：2018-09-20

Applicant: EtaGen, Inc.

Inventor： Anthony Da Costa ,  John Powers

IPC: H02K7/18 ,  F02B71/04 ,  H02M3/158 ,  F02B63/04 ,  H02M3/06

CPC classification number: H02K7/1884 ,  F02B63/041 ,  F02B71/04 ,  F02B71/06 ,  H02M3/06 ,  H02M3/1582 ,  H02P6/006 ,  H02P9/04 ,  H02P25/032

Abstract: Multiphase electromagnetic machines, such as free-piston engines or compressors, may require, or supply, a pulsed power profile from or to a DC bus, respectively. The pulsed power profile may include relatively large fluctuations in instantaneous power. Sourcing, sinking, or otherwise exchanging power with an AC grid, via an inverter, may be accomplished by using an energy storage device and a DC-DC converter coupled to a DC bus. The energy storage device may aid in smoothing the pulsed power profile, while the DC-DC converter may aid in reducing fluctuations in voltage across a DC bus due to energy storage in the energy storage device.

公开(公告)号：US20190058423A1

公开(公告)日：2019-02-21

申请号：US16104494

申请日：2018-08-17

Applicant: Dialog Semiconductor (UK) Limited

Inventor： Horst Knoedgen ,  Horst Schleifer

IPC: H02P6/185 ,  H02P6/00 ,  H02K29/12 ,  H02K41/035 ,  G03B13/36

CPC classification number: H02P6/185 ,  G03B3/10 ,  G03B5/00 ,  G03B13/36 ,  G03B2205/0069 ,  H02K29/12 ,  H02K41/0356 ,  H02P6/006 ,  H02P6/182 ,  H02P25/034 ,  H02P2203/11

Abstract: An actuation system is proposed for an optical system, comprising a voice coil motor for actuating the optical system, the voice coil motor comprising a magnet and an electric coil, a position measuring unit for measuring the position of the electric coil and providing a position feedback signal, and a control unit for closed loop control of the position of the optical system based on a target position and the position feedback signal, used for generating a drive signal for the electric coil. According to the disclosure, a ferromagnetic element is arranged in proximity to the electric coil so that the inductance of the electric coil depends on its position. Further, the position-measuring unit measures the inductance of the electric coil and determines the position of the electric coil based on the determined inductance.

公开(公告)号：US20180329172A1

公开(公告)日：2018-11-15

申请号：US15942989

申请日：2018-04-02

Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

Inventor： Yoshihisa TABUCHI

IPC: G02B7/10 ,  H02P7/28 ,  H02P7/06 ,  H02P6/182 ,  H02P6/26 ,  G02B15/14 ,  H02P6/00 ,  H02P7/02 ,  G02B7/28

CPC classification number: G02B7/102 ,  G02B7/28 ,  G02B15/14 ,  H02P6/006 ,  H02P6/182 ,  H02P6/26

Abstract: Various embodiments of the present technology may comprise a method and apparatus for actuator control. The methods and apparatus may comprise various digital signal processing functions to detect a back EMF (electromotive force) and compute a countermeasure value to reduce ringing. The methods and apparatus for actuator control may apply a drive signal corresponding to the countermeasure value. The magnitude and direction of the drive signal provided at particular times during operation may facilitate a shorter settling time.

公开(公告)号：US09780703B2

公开(公告)日：2017-10-03

申请号：US14824193

申请日：2015-08-12

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Giuseppe Maiocchi

IPC: G05B15/02 ,  H02P6/00

CPC classification number: H02P6/28 ,  H02M5/458 ,  H02P6/006 ,  H02P6/085

Abstract: A power supply may include power generation circuits, each configured to drive a respective winding of a multiphase motor; converter circuits, each configured to generate a digital driving signal for a respective power generation circuit, and a memory configured to store a plurality of fast recirculation compensation values corresponding to combinations of the digital driving signals that would otherwise result in a fast recirculation condition. The power supply may also include a controller coupled to the memory and configured to determine when a given combination of the digital driving signals would otherwise result in a fast recirculation condition, and based upon the determination, substitute at least one corresponding fast recirculation compensation value for the given combination of the digital driving signals.

公开(公告)号：US09673005B2

公开(公告)日：2017-06-06

申请号：US15029464

申请日：2014-10-02

Applicant: Hitachi, Ltd.

Inventor： Hisashi Urasaki ,  Makoto Hirose ,  Masataka Sasaki ,  Yoichi Oshita ,  Yasuaki Aoyama

IPC: H01H33/36 ,  H01H33/59 ,  H01H33/88 ,  H02P6/00 ,  H01H9/16 ,  H01H47/02 ,  H01H3/26 ,  H02K41/02

CPC classification number: H01H33/36 ,  H01H9/167 ,  H01H33/59 ,  H01H33/88 ,  H01H47/02 ,  H01H2003/268 ,  H02K41/02 ,  H02P6/006

Abstract: The invention provides a switchgear that is capable of increasing a degree of freedom of a position of a moving arcing contact in a circuit breaker, does not require dimension management of components and a mechanism for adjusting a position of the moving arcing contact, and is capable of simplifying fabrication of components and assembly of devices and reducing cost. The switchgear according to the invention includes: a circuit breaker that is configured of a fixed arcing contact installed at a fixed-side conductor and a moving arcing contact installed at a moving electrode that opens and closes with respect to the fixed arcing contact; a linear motor that generates drive force for operating the moving arcing contact; a position detecting device that detects a position of a moving element of the linear motor; a contact detecting device that detects a contact state between the fixed arcing contact and the moving arcing contact; and a control device that sets a moving range of the moving arcing contact by controlling a voltage and a phase to be supplied to the linear motor based on the contact state between the fixed arcing contact and the moving arcing contact, which is detected by the contact detecting device, and position information of the moving element of the linear motor, which is detected by the position detecting device.

公开(公告)号：US20160380573A1

公开(公告)日：2016-12-29

申请号：US15263794

申请日：2016-09-13

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Yusuke OKA ,  Tadashi OKUBO

IPC: H02P27/08 ,  H02P6/08 ,  H02P6/00

CPC classification number: H02P27/08 ,  H02P6/006 ,  H02P6/08 ,  H02P29/02

Abstract: A motor control apparatus for controlling driving of a motor includes an inverter which supplies power to a motor having a position detector, and circuitry which controls power conversion of the inverter based on at one or more predetermined control parameters, determine a type of the motor based on a signal received from the position detector of the motor, and control notification of setting confirmation of one or more of the predetermined control parameters in accordance with the type of the motor.

Abstract translation: 用于控制电动机驱动的电动机控制装置包括向具有位置检测器的电动机供给电力的逆变器，以及基于一个或多个预定控制参数来控制逆变器的功率转换的电路，确定基于电动机的类型 根据从电动机的位置检测器接收到的信号，以及根据电动机的类型来设定一个或多个预定控制参数的确定的控制通知。

公开(公告)号：US09501063B2

公开(公告)日：2016-11-22

申请号：US14648722

申请日：2013-11-12

Applicant: Yui Masuda

Inventor： Yui Masuda

IPC: H02K7/10 ,  G05D3/12 ,  F16D65/18 ,  H02P3/26 ,  H02P6/16 ,  H02K7/06 ,  G05B19/19 ,  H02P6/00 ,  F16D121/24 ,  F16D125/40 ,  F16D125/50 ,  F16D127/06 ,  F16D129/08 ,  F16H25/20

CPC classification number: G05D3/12 ,  F16D65/18 ,  F16D2121/24 ,  F16D2125/40 ,  F16D2125/50 ,  F16D2127/06 ,  F16D2129/08 ,  F16H25/20 ,  G05B19/19 ,  G05B2219/43194 ,  G05B2219/49141 ,  H02K7/06 ,  H02K11/24 ,  H02P3/26 ,  H02P6/006 ,  H02P6/16

Abstract: An electric linear motion actuator includes an electric motor, a motion converting mechanism that converts the rotational motion of the electric motor into a linear motion of a linear moving member, a load sensor that detects the magnitude of the load applied to the brake disk from the linear moving member, and a controller that performs feedback control on the electric motor based on the difference between the load detected by the load sensor and a load command value. The controller reduces the number of revolutions of the electric motor when the linear moving member moves into a predetermined zone immediately before the position where the clearance between the linear moving member and the brake disk becomes zero.

Abstract translation: 电动直线运动致动器包括电动机，将电动机的旋转运动转换为直线运动部件的直线运动的运动转换机构，负载传感器，其从 线性移动部件，以及基于由负载传感器检测到的负载与负载指令值之间的差异对电动机进行反馈控制的控制器。 当直线移动部件移动到直线移动部件和制动盘之间的间隙变为零的位置之前的预定区域时，控制器减少电动机的转数。