公开(公告)号：US10630225B2

公开(公告)日：2020-04-21

申请号：US16269027

申请日：2019-02-06

Applicant: FANUC CORPORATION

Inventor： Shunpei Tanaka

IPC: G05B11/01 ,  H02P29/024 ,  G05B19/406

Abstract: A machine tool controller capable of identifying the factors of a warning easily is provided. A controller of a machine tool includes a power supply monitoring unit, a power supply abnormality detecting unit, and an abnormality diagnosis unit. The power supply monitoring unit acquires measurements indicating an operating state of a machine tool and/or a peripheral device (for example, an AC power supply or a motor) of the machine tool. The power supply abnormality detecting unit detects an abnormality in the operating state of the machine tool and/or the peripheral device and outputs a signal indicating the abnormality and the measurements obtained when the abnormality was detected. The abnormality diagnosis unit automatically selects a measurement related to the abnormality among the measurements and automatically diagnoses factors of the abnormality.

公开(公告)号：US10353375B2

公开(公告)日：2019-07-16

申请号：US15623378

申请日：2017-06-15

Applicant: FANUC CORPORATION

Inventor： Shunpei Tanaka

IPC: G05B19/406 ,  B23Q5/58

Abstract: A machine tool controller includes: a voltage detection unit which detects a voltage value of an input power supply; a time measurement unit which measures an occurrence time and a duration time when a voltage drop state occurs with respect to the voltage value; an abnormality determination unit which determines whether a low voltage abnormality or a power failure occurs with respect to the input power supply based on the voltage value and the duration time of the voltage drop state; a machining management unit which acquires a machining condition command and machining information of the machine tool; and a storage unit which stores the voltage value detected by the voltage detection unit, the occurrence time of the voltage drop state measured by the time measurement unit, and the machining information when the abnormality determination unit determines that the low voltage abnormality occurs with respect to the input power supply.

公开(公告)号：US10298167B2

公开(公告)日：2019-05-21

申请号：US15458084

申请日：2017-03-14

Applicant: FANUC CORPORATION

Inventor： Shunpei Tanaka ,  Kenta Yamamoto

IPC: H02P29/024 ,  H02P27/06 ,  H02H1/00

Abstract: A motor controller includes a rectifier for converting AC power supplied from an AC power supply into DC power and outputting the DC power; an AC voltage detector for detecting an AC voltage value of the AC power supply and outputting the AC voltage value as a detection value; a power failure detector for determining that a power failure is occurring, when a state in which the outputted detection value is equal to or lower than a regulation voltage has continued for a regulation time or more; and a power failure detection condition determiner for determining or modifying the regulation time.

公开(公告)号：US11175647B2

公开(公告)日：2021-11-16

申请号：US16004639

申请日：2018-06-11

Applicant: FANUC CORPORATION

Inventor： Shunpei Tanaka ,  Kazunori Iijima

IPC: G05B19/416

Abstract: A controller of a motor that drives a driven body includes: an inertia estimating unit that estimates inertia on the basis of feedback information (torque and current) of the motor; a computing unit that computes an acceleration or deceleration time constant of the motor from the estimation inertia estimated by the inertia estimating unit; a storage unit that stores an inertia difference which is a difference between the estimation inertia and at least one known actual inertia and a time constant difference which is a difference between an actual acceleration or deceleration time constant corresponding to the actual inertia and an acceleration or deceleration time constant calculated on the basis of the estimation inertia; and a correction unit that corrects the acceleration or deceleration time constant calculated by the computing unit using the inertia difference and the time constant difference stored in the storage unit.

公开(公告)号：US11387745B2

公开(公告)日：2022-07-12

申请号：US17114704

申请日：2020-12-08

Applicant: Fanuc Corporation

Inventor： Eijun Murai ,  Shunpei Tanaka ,  Shinichi Horikoshi

IPC: H02P27/08 ,  H02P27/06 ,  H02M7/219

Abstract: The rectifier includes: a main circuit unit configured to perform power conversion between AC power on a side of a three-phase AC power supply and DC power on a DC side by rectifying operation of a rectifying device and ON-OFF operation of a switching device; a power calculation unit configured to calculate a value of a power flowing between the side of the three-phase AC power supply and the DC side via the main circuit unit; and a control unit configured to perform control to execute the ON-OFF operation of the switching device, wherein the control unit changes a length of an ON period per cycle in the ON-OFF operation executed on the switching device according to the value of the power calculated by the power calculation unit.

公开(公告)号：US10666184B2

公开(公告)日：2020-05-26

申请号：US16269027

申请日：2019-02-06

Applicant: FANUC CORPORATION

Inventor： Shunpei Tanaka

IPC: G05B11/01 ,  H02P29/024 ,  G05B19/406

Abstract: A machine tool controller capable of identifying the factors of a warning easily is provided. A controller of a machine tool includes a power supply monitoring unit, a power supply abnormality detecting unit, and an abnormality diagnosis unit. The power supply monitoring unit acquires measurements indicating an operating state of a machine tool and/or a peripheral device (for example, an AC power supply or a motor) of the machine tool. The power supply abnormality detecting unit detects an abnormality in the operating state of the machine tool and/or the peripheral device and outputs a signal indicating the abnormality and the measurements obtained when the abnormality was detected. The abnormality diagnosis unit automatically selects a measurement related to the abnormality among the measurements and automatically diagnoses factors of the abnormality.

公开(公告)号：US11126149B2

公开(公告)日：2021-09-21

申请号：US16286982

申请日：2019-02-27

Applicant: FANUC CORPORATION

Inventor： Ryoutarou Tsuneki ,  Shunpei Tanaka

IPC: G05B19/4155 ,  G05B13/02

Abstract: To provide an adjusting device and an adjusting method for appropriately controlling the machine learning reduced in cost with respect to calculation load and learning period of time in the case where an evaluation program for machine learning is used separately from a machining program and the like. The present invention includes a feedback information acquiring part configured to acquire, from a control device, feedback information obtained when an evaluation program including various types of learning elements is executed in the control device, a determination part configured to determine which learning element the acquired feedback information corresponds to among the various types of learning elements, a feedback information transmitting part configured to transmit the acquired feedback information to a machine learning part corresponding to the learning element, a parameter setting information acquiring part configured to acquire control parameter setting information obtained through machine learning by use of the feedback information, and a parameter setting information transmitting part configured to transmit the acquired control parameter setting information to the control device.

公开(公告)号：US20210175818A1

公开(公告)日：2021-06-10

申请号：US17114704

申请日：2020-12-08

Applicant: Fanuc Corporation

Inventor： Eijun Murai ,  Shunpei Tanaka ,  Shinichi Horikoshi

IPC: H02M7/219 ,  H02P27/08

Abstract: The rectifier includes: a main circuit unit configured to perform power conversion between AC power on a side of a three-phase AC power supply and DC power on a DC side by rectifying operation of a rectifying device and ON-OFF operation of a switching device; a power calculation unit configured to calculate a value of a power flowing between the side of the three-phase AC power supply and the DC side via the main circuit unit; and a control unit configured to perform control to execute the ON-OFF operation of the switching device, wherein the control unit changes a length of an ON period per cycle in the ON-OFF operation executed on the switching device according to the value of the power calculated by the power calculation unit.

公开(公告)号：US10148214B2

公开(公告)日：2018-12-04

申请号：US15466994

申请日：2017-03-23

Applicant: FANUC CORPORATION

Inventor： Shunpei Tanaka ,  Kenta Yamamoto

IPC: H02P29/00 ,  H02P29/024 ,  H02P6/14 ,  H02P27/08

Abstract: A motor control device includes: a rectifier that converts AC power supplied from an AC power supply side into DC power and outputs the DC power; an inverter that converts the DC power output from the rectifier into AC power for motor driving and outputs the AC power; an AC voltage detection unit that detects an AC voltage value of an AC power supply side of the rectifier; and a power failure detection unit that outputs, based on the AC voltage value detected by the AC voltage detection unit, several power failure detection signals in accordance with a predetermined power failure detection condition at a power failure on the AC power supply side of the rectifier.

公开(公告)号：US20170279399A1

公开(公告)日：2017-09-28

申请号：US15458084

申请日：2017-03-14

Applicant: FANUC CORPORATION

Inventor： Shunpei Tanaka ,  Kenta Yamamoto

IPC: H02P29/024 ,  H02P27/06

CPC classification number: H02P29/025 ,  H02H1/00 ,  H02P27/06

Abstract: A motor controller includes a rectifier for converting AC power supplied from an AC power supply into DC power and outputting the DC power; an AC voltage detector for detecting an AC voltage value of the AC power supply and outputting the AC voltage value as a detection value; a power failure detector for determining that a power failure is occurring, when a state in which the outputted detection value is equal to or lower than a regulation voltage has continued for a regulation time or more; and a power failure detection condition determiner for determining or modifying the regulation time.