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公开(公告)号：US20170237376A1
公开(公告)日：2017-08-17
申请号：US15429810
申请日：2017-02-10
Applicant: Kabushiki Kaisha Yaskawa Denki
Inventor： Takahiro SAEKI
Abstract: A motor controller includes an inverter including circuitry which supplies power to a motor, and a controller including circuitry which controls the inverter such that the circuitry of the inverter supplies an AC current to a first axis of a stationary orthogonal coordinate system in the motor while changing a frequency of the AC current. The first axis has a predetermined phase relationship with a phase voltage of the motor.
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公开(公告)号：US20170217025A1
公开(公告)日：2017-08-03
申请号：US15414672
申请日：2017-01-25
Applicant: Kabushiki Kaisha Yaskawa Denki
Inventor： Takuya OKADA , Yasuyuki ISHIBE , Takeyuki NINOMIYA , Yoshitaka FUKUDOME , Kyoko SOTOBAYASHI
IPC: B25J17/00
CPC classification number: B25J17/00 , B25J19/0075 , Y10S901/28
Abstract: A robot includes a joint and a drive mechanism disposed in the joint. A reducer includes an output shaft and a fixed portion. A first seal seals a gap between the output shaft and the fixed portion. A first cover is fixed to the fixed portion and covers an outer surface of the fixed portion. An intermediate portion is fixed to an output-side portion of the output shaft. A second cover is fixed to an output-side portion of the intermediate portion and covers an outer surface and an output-side edge of the first cover. A second seal seals a gap between the first cover and the intermediate portion. A groove extends approximately over a circumference of the outer surface of the first cover.
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公开(公告)号：US20170214356A1
公开(公告)日：2017-07-27
申请号：US15480384
申请日：2017-04-06
Applicant: Kabushiki Kaisha Yaskawa Denki
Inventor： Yasufumi YOSHIURA , Yasuhiko KAKU
IPC: H02P29/00
CPC classification number: H02P29/00 , H02P6/34 , H02P21/143 , H02P29/40 , H02P29/50
Abstract: Provided is an electric-motor control device, including: a command value calculation unit configured to calculate a command value directed to an electric motor based on a command value and a given moment-of-inertia value; a difference detection unit configured to detect a difference between the moment-of-inertia value and an estimated moment-of-inertia value; a moment-of-inertia value change unit configured to change at least anyone of the moment-of-inertia value and a correction coefficient for the moment-of-inertia value based on the difference; and a change restriction unit configured to restrict a change in the moment-of-inertia value or the correction coefficient when at least any one of the moment-of-inertia value and the correction coefficient is changed to decrease by the moment-of-inertia value change unit.
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公开(公告)号：US09690287B2
公开(公告)日：2017-06-27
申请号：US15142179
申请日：2016-04-29
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Yasuhiro Matsutani
CPC classification number: G05B19/416 , G01D5/305 , G01D5/341 , G05B2219/33218 , H02K11/22 , H02P6/16
Abstract: A servo system includes a motor having a stator and a movable element which moves relative to the stator, an encoder which detects at least one of a position and a speed of the movable element of the motor, and a controller including first circuitry which controls operation of the motor based on a detection result of the encoder. The first circuitry of the controller transmits a first command signal that changes a communication speed between the encoder and the controller from a first speed to a second speed which is higher than the first speed, and the encoder includes second circuitry which changes the communication speed between the encoder and the controller to the second speed when the first command signal is received from the controller.
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公开(公告)号：US09662789B2
公开(公告)日：2017-05-30
申请号：US14499274
申请日：2014-09-29
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Taro Namba , Tomohiro Ueno , Osamu Yoshida
IPC: G05B19/04 , G05B19/18 , B25J9/16 , G05B19/042
CPC classification number: B25J9/161 , B25J9/163 , B25J9/1656 , G05B19/0426 , G05B2219/32145 , G05B2219/34039 , G05B2219/37445 , G05B2219/40102 , Y02P90/10 , Y10S901/03
Abstract: This disclosure discloses a robot system including one or more work facilities and a teaching information database. The work facilities comprise a robot and robot controller. The robot controller controls the movement of the robot based on teaching information stored in a storage part. The teaching information database stores a plurality of types of the teaching information associated with work information. Each work facility includes an interface device configured to receive an input of search condition information, to search teaching information highly relevant to the search condition information among the plurality of types of teaching information, and to receive a selection of desired teaching information among one or more sets of the teaching information hit in the search. The robot system further comprises a first transferring part configured to transfer the teaching information from the teaching information database to the storage part.
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Patent Agency Ranking
公开(公告)号：US20170146982A1
公开(公告)日：2017-05-25
申请号：US14946818
申请日：2015-11-20
Applicant: KABUSHIKI KAISHA YASKAWA DENKI , Yaskawa America, Inc.
Inventor： Yasushi KIBE , William PHILLIPS , Christopher JASZCZOLT , Micah STUEDEMANN
IPC: G05B19/4155
Abstract: A motor control apparatus includes a memory and a setting selector. The memory is configured to store setting items each relating to a motor, and the setting sequence to sequentially set the setting items. The setting selector is connected to the memory and configured to select a newly selected item from among the setting items based on the setting sequence, a user input, and a currently selected item of the setting items.
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公开(公告)号：US09660545B2
公开(公告)日：2017-05-23
申请号：US14513216
申请日：2014-10-14
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Hirofumi Kinomura , Joji Ebisu , Koji Iwahashi
Abstract: A matrix converter includes: a power convertor that includes a plurality of bidirectional switches configured to control a conducting direction using a plurality of switching elements; a command generator configured to generate a control command for a PWM control on the plurality of switching elements; and a commutation controller configured to perform a commutation control on the plurality of bidirectional switches in a case where the control command changes. In a case where the control command changes during execution of the commutation control, the commutation controller executes a handover step for handover to a next commutation control and then executes the next commutation control from a step in a course of the next commutation control.
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公开(公告)号：US09647597B2
公开(公告)日：2017-05-09
申请号：US14521619
申请日：2014-10-23
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Shuji Matsuda , Hideaki Iura
Abstract: A motor control apparatus includes a voltage regulator to execute a voltage increase mode to increase a voltage applied to an induction motor from a lower limit of a first range over time. A frequency regulator executes a frequency decrease mode to decrease a frequency of the voltage from an upper limit of a second range over time. The frequency regulator limits decrease of the frequency when a bus voltage of a bus exceeds a first threshold in the frequency decrease mode. The bus supplies DC power to an inverter to drive the motor. A mode changer alternatively changes the voltage increase mode and the frequency decrease mode to control the motor to change from a free running state to a state in which the voltage and the frequency satisfy a relationship. The determinator determines whether the voltage and the frequency satisfy the relationship.
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公开(公告)号：US09625899B2
公开(公告)日：2017-04-18
申请号：US14541142
申请日：2014-11-14
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Koichi Kuwahara
IPC: G05B19/18 , G05B19/425 , B25J9/16
CPC classification number: G05B19/425 , B25J9/1671 , G05B2219/35012 , G05B2219/35216 , G05B2219/40121 , Y02P90/265
Abstract: A teaching system according to an embodiment includes an image generating unit, a start point specifying unit, a via point specifying unit, and a teaching data generating unit. The image generating unit generates a virtual image including a closed processing line set on a workpiece to be processed by a robot. The start point specifying unit specifies a start point at a position outside the processing line on the virtual image. The via point specifying unit specifies a via point on the processing line. The teaching data generating unit generates teaching data relative to the robot for a path that leaves the start point to follow the processing line by way of the via point and returns to the via point.
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公开(公告)号：US20170104376A1
公开(公告)日：2017-04-13
申请号：US15291068
申请日：2016-10-12
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Isao NAKAGAWA , Genki URABE
CPC classification number: H02K1/2773 , H02K1/2766 , H02K15/03 , H02K29/03 , H02K2213/03
Abstract: A rotary electric machine comprises a rotor core and a plurality of permanent magnets embedded in the rotor core along a circumferential direction of the rotor core. The rotor core includes a magnetic pole portion disposed between two permanent magnets adjoining along the circumferential direction of the rotor core. The magnetic pole portion includes a circular arc surface whose cross-sectional shape in a direction perpendicular to an axial direction of the rotor core is a circular arc shape differing in curvature from an outer circumferential circle which is a circumference of a maximum outer diameter portion of the rotor core
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