公开(公告)号：US10663365B2

公开(公告)日：2020-05-26

申请号：US15717117

申请日：2017-09-27

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Maddumage P. Subasinghe ,  Joseph M. Sands ,  Kanagala S. Rao

IPC: G01L5/28 ,  H02P1/16 ,  H02P3/04 ,  F16D66/00

Abstract: A motor assembly and method for measuring brake backlash using onboard components of the motor assembly. The method includes engaging a brake of the motor assembly, applying torque to an output shaft of the motor assembly in first and second rotational directions and measuring a difference in angular position of the output shaft using a position feedback device of the motor to calculate brake backlash.

公开(公告)号：US10541631B2

公开(公告)日：2020-01-21

申请号：US15580939

申请日：2016-04-22

Applicant: REAC AB

Inventor： Johan Olsson

IPC: H02K7/10 ,  H02P3/04 ,  H02K49/10 ,  H02P3/12 ,  H02P3/16 ,  H02K7/116 ,  F16D63/00 ,  H02K27/00

Abstract: This invention relates to a linear type actuator unit, said actuator unit (100), including an electric motor (1) driving a linear actuator (2) of, said motor (1) having a casing (11), a stator (14,15) fixed to the casing, a rotor (13) fixed to a rotary part (10), preferably a rotary motor shaft (10), wherein said rotary part (10) is arranged to be operatively connected to a reduction gear (5) which drives the mechanical output of the actuator (2), a separate magnetic brake unit (3), said magnetic brake (3) including a rotating brake member (30,31) connected to the motor shaft (10), directly or indirectly, and a plurality of fixed brake members (32, 33), wherein said magnetic brake (3) is arranged to produce a torque that will strive to position a rotary member (10, 20) with said rotating brake member (30,31) into one or more specific angular positions in relation to the fixed brake members (32, 33), and wherein said rotating brake member (30,31) is in the form of a separate annulus (30, 31) attached to said rotary member (10, 20) arranged to brake the motor at low rotational speeds and in that the actuator unit (100) is arranged with a circuitry (101) including a short circuiting arrangement (113, 103) arranged to enable braking of the motor (1) at rotational speeds above low rotational speeds.

公开(公告)号：US20180215592A1

公开(公告)日：2018-08-02

申请号：US15471452

申请日：2017-03-28

Applicant: GOODRICH AEROSPACE SERVICES PRIVATE LIMITED

Inventor： Ashok Kumar Thirunarayana ,  Adishesha Chinknyakanhalli Sivaramasastry

IPC: B66D1/48 ,  B66D1/12 ,  B66D1/22 ,  H02P3/08 ,  H02P3/04

CPC classification number: B66D1/485 ,  B66D1/12 ,  B66D1/22 ,  B66D2700/025 ,  B66D2700/03 ,  H02P3/04 ,  H02P3/08 ,  H02P3/24

Abstract: Embodiments herein relate to a permanent magnet (PM) motor driven hoist with a motor based electromagnetic brake. The hoist includes a direct current (DC) power source, a PM motor having stator coils and a PM rotor operably coupled to a cable drum with a cable wrapped thereon. The hoist also includes a controller operably connected to the direct current power source and the PM motor, wherein the controller is configured to control the PM motor employing a method to brake the PM motor. The method includes generating control signals in the controller based on a position of the PM motor, applying a braking command signal to the PM motor to magnetically lock the PM rotor of the PM motor for a selected duration, removing the braking command signals for a second selected duration, and repeating the generating, applying, and removing until the PM motor has stopped.

公开(公告)号：US10027259B2

公开(公告)日：2018-07-17

申请号：US15217089

申请日：2016-07-22

Applicant: FANUC CORPORATION

Inventor： Katsuya Ono ,  Takeshi Tamaki

IPC: H02K7/10 ,  H02P3/08 ,  F16D1/00 ,  H02P3/04 ,  H02K7/102 ,  H02K11/20

Abstract: A braking apparatus according to one embodiment of the present invention is a braking apparatus for use in an electrical motor, and comprises a braking unit which locks the electrical motor in position, a voltage detection unit which detects a voltage applied to the braking unit, and an observing unit which recognizes a voltage variation pattern and, based on the voltage variation pattern, observes the released and actuated states of the braking unit.

公开(公告)号：US20180022588A1

公开(公告)日：2018-01-25

申请号：US15216103

申请日：2016-07-21

Applicant: Ace World Companies Ltd.

Inventor： Yuh-Jing Ho

IPC: B66D1/48 ,  B66D1/54 ,  H02P3/04 ,  B66D1/12

CPC classification number: B66D1/485 ,  B66C15/00 ,  B66D1/12 ,  B66D1/54 ,  B66D5/30 ,  B66D2700/0141 ,  H02P3/04 ,  H02P3/18

Abstract: A variable frequency drive motor system includes a variable frequency drive motor and a controller coupled to the motor. The controller includes a rectifier, a direct current (DC) link bus, and an inverter. The controller is configured to determine that a brake has failed. In response to the determination that the brake has failed, the controller is configured to determine that power to the controller from a power supply has been interrupted. In response to the determination that power to the controller has been interrupted and a determination that a DC voltage across the DC link bus is below a first threshold value, the controller is configured to drive the motor at a faster speed.

公开(公告)号：US09676103B2

公开(公告)日：2017-06-13

申请号：US15024789

申请日：2014-09-10

Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA

Inventor： Tsuyoshi Tagashira ,  Kouji Munetou

IPC: B25J19/00 ,  B25J19/06 ,  H02P3/04 ,  H02P3/06

CPC classification number: B25J19/06 ,  B25J19/0004 ,  B25J19/066 ,  H02P3/04 ,  H02P3/06

Abstract: A plurality of motors, which drive plurality of axes of multi-axis robot, respectively; plurality of power converters, which control operation of plurality of motors, respectively, by supplying and controlling electric power to plurality of motors; drive circuits, each of which drives first semiconductor switching elements included in a corresponding one of power converters by outputting drive signals to control terminals of first semiconductor switching elements in accordance with control signals for controlling operation of the motors; shut-off circuit provided at non-end position in an electrical path, through which first operating power is supplied to drive circuits; and shut-off control circuit, which outputs shut-off signals to shut-off circuit. The shut-off circuit includes second semiconductor switching elements, which are inserted in an electrical path in series to each other, second semiconductor switching elements turning off in accordance with shut-off signals, respectively, to shut off the electrical path.

公开(公告)号：US09621079B2

公开(公告)日：2017-04-11

申请号：US14879243

申请日：2015-10-09

Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.

Inventor： Takashi Ogawa ,  Kohei Sakurai ,  Yuichiro Morita

IPC: H02P6/06 ,  H02P3/18 ,  H02P6/12 ,  H02P3/04 ,  E02F9/20 ,  G01P3/44 ,  E02F9/12 ,  E02F9/26 ,  H02P29/024

CPC classification number: H02P3/04 ,  B60L2200/40 ,  E02F9/128 ,  E02F9/2095 ,  E02F9/267 ,  G01P3/44 ,  H02P3/18 ,  H02P6/06 ,  H02P6/12 ,  H02P29/0241 ,  Y02T10/642

Abstract: A construction machine includes: a swing structure; an electric motor that drives the swing structure; an operating device that outputs an operating signal according to an operating amount and an operating direction; an inverter device that controls the electric motor based on a control signal generated based on the operating signal; a position sensor that detects an actual speed of the electric motor; and a second controller that determines whether at least one of a first condition and a second condition is satisfied. The first condition is satisfied when a sign of a value computed by subtracting the actual speed from a target speed of the electric motor that defined by the control signal; and the second condition is satisfied when a difference between the target speed and the actual speed is greater than a first reference value, and when the acceleration is greater than a second reference value.

公开(公告)号：US09506954B2

公开(公告)日：2016-11-29

申请号：US14726089

申请日：2015-05-29

Applicant: HYUNDAI MOBIS CO., LTD.

Inventor： Do Kun Kim

IPC: H02P3/04 ,  G01R19/00 ,  B60L3/00 ,  B60T8/171 ,  B60T8/88 ,  B60T13/66 ,  B60T17/18 ,  B60T17/22

CPC classification number: G01R19/00 ,  B60L3/0076 ,  B60T8/171 ,  B60T8/885 ,  B60T13/662 ,  B60T17/18 ,  B60T17/221 ,  B60T2270/406

Abstract: Disclosed is a method, including: urgently putting a brake on a vehicle; detecting current values for at least two phases among phases of a motor which operates at a current which is out of a current measurable range through the urgently putting of a brake; comparing the current value detected in the detecting with a threshold value; when it is determined that there is one current value which is equal to or higher than the threshold value among the detected current values in the comparing, removing the current value which is equal to or higher than the threshold value and obtaining a current value for the remaining phase of the motor from a predetermined look-up table; and determining the removed current value using a current value which is detected through the comparing and is lower than the threshold value and the current value obtained through the obtaining.

Abstract translation: 公开了一种方法，包括：紧急地将车辆制动在车辆上; 通过紧急放置制动器，检测在电流不在当前可测量范围内的电动机的相位中的至少两相的电流值; 将检测中检测到的当前值与阈值进行比较; 当在比较中检测到的电流值中确定存在等于或高于阈值的一个电流值时，去除等于或高于阈值的电流值，并获得当前值 来自预定查找表的马达的剩余相位; 以及使用通过比较检测到的电流值来确定去除的电流值，并且低于通过获得获得的阈值和当前值。

公开(公告)号：US20160156288A1

公开(公告)日：2016-06-02

申请号：US14952841

申请日：2015-11-25

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Mitsujiro SAWAMURA ,  Junichi WATANABE ,  Daichi HORIMAI

IPC: H02P3/04

CPC classification number: H02P3/04 ,  B25J9/1674 ,  B25J19/0004 ,  B25J19/06 ,  F16D59/02 ,  F16D66/00 ,  F16D2055/0058 ,  F16D2066/003 ,  F16D2121/22 ,  G01L5/28 ,  G05B19/406 ,  G05B2219/41279 ,  H02P3/00 ,  H02P29/0241

Abstract: This disclosure discloses a brake diagnosis device configured to diagnose a brake of a motor with a brake. The brake diagnosis device includes a brake control part, a diagnosis part, and a signal output part. The brake control part is configured to actuate or release the brake. The diagnosis part is configured to diagnose a presence or absence of an abnormality of the brake while the brake is actuated by the brake control part. The signal output part is configured to output a signal related to a brake abnormality after the brake is released by the brake control part in a case that the diagnosis part diagnoses the brake as having an abnormality.

Abstract translation: 本公开公开了一种制动诊断装置，其被配置为利用制动器诊断电动机的制动。 制动诊断装置包括制动控制部，诊断部和信号输出部。 制动控制部分构造成致动或释放制动器。 诊断部被配置为在制动器由制动控制部驱动时诊断制动器的异常的存在或不存在。 在诊断部诊断为具有异常的情况下，信号输出部被配置为输出与制动器异常有关的信号。

公开(公告)号：US09312793B2

公开(公告)日：2016-04-12

申请号：US14500279

申请日：2014-09-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD. ,  BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Huixuan Guo ,  Honglin Miao ,  Yinlong Rui ,  Tao Sun

IPC: H02K7/10 ,  H02P3/04

CPC classification number: H02P3/04

Abstract: The present invention relates to a brake control circuit and a motor system. The brake control circuit is used for controlling a motor brake connected to a motor, and comprises a brake control input module and a brake control main module, wherein the brake control input module includes a control signal input unit and N relays connected in parallel to an output end of the control signal input unit, the relays are electrically connected to the brake control main module, and N is an integer greater than or equal to 2.

Abstract translation: 本发明涉及制动控制电路和电动机系统。 制动控制电路用于控制连接到电动机的电动机制动器，并且包括制动控制输入模块和制动控制主模块，其中制动控制输入模块包括控制信号输入单元和N个与 控制信号输入单元的输出端，继电器电连接到制动控制主模块，N为大于或等于2的整数。