Patents Assigned to Kabushiki Kaisha Yaskawa Denki
  • Publication number: 20240134336
    Abstract: Provided is a production system, comprising circuitry configured to: associate a plurality of rungs included in a ladder program with one of a plurality of scan groups each having an execution cycle that is specifiable; allocate each of the plurality of scan groups to one of a plurality of processor cores of a controller so that each of the plurality of scan groups is distributed; and execute one or more rungs associated with one or more scan groups allocated to each of the plurality of processor cores in parallel in each of the execution cycles.
    Type: Application
    Filed: January 3, 2024
    Publication date: April 25, 2024
    Applicant: Kabushiki Kaisha Yaskawa Denki
    Inventors: Takahiko SUZUKI, Hiromasa SHIMIZU, Yu KATONO, Yosuke KAMIYA
  • Patent number: 11960925
    Abstract: A program generating device comprising circuitry configured to: display a schedule screen, in which, for each of a plurality of processes executed in a system including a plurality of industrial devices, at least a name of a process is associated with a variable that is at least either referenced or changed in a process program representing an operation of one or more of the plurality of industrial devices and executed in the process, a plurality of names of the plurality of processes obtained from a process database that is stored as process information are included, and an execution order of the plurality of processes can be specified; receive a specification of the execution order on the schedule screen; and generate a system program based on the execution order and the variable of each process included in the execution order.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: April 16, 2024
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Naoki Mizuno, Yosuke Kamiya, Shinichiro Obata, Aya Matsunaga
  • Patent number: 11958196
    Abstract: A production system comprising: an industrial device being self-movable; and circuitry configured to; control the industrial device to prepare for a next job before the industrial device arrives at a next location; and control the industrial device to perform the next job when the industrial device arrives at the next location and a preparation for the next job is completed.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: April 16, 2024
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Takeshi Yamashita, Ryosuke Tsutsumi
  • Publication number: 20240116719
    Abstract: A transfer robot includes a first arm provided rotatably around a first axis which extends along a vertical direction, a second arm connected to the first arm rotatably around a second axis which extends along the vertical direction, an arm distal end portion which is configured to be connected to a workpiece holder to hold a workpiece and which is connected to the second arm rotatably around a third axis which extends along the vertical direction, and a posture adjuster configured to rotate the workpiece around a first posture adjustment axis which intersects both the third axis and a direction extending toward the arm distal end portion away from the third axis.
    Type: Application
    Filed: September 7, 2023
    Publication date: April 11, 2024
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Akihiro TASHIRO, Kyohei TSUCHIYA, Chengbi ZHAO, Ikuro HIRATA, Keisuke YONEHARA
  • Patent number: 11953882
    Abstract: A production system, comprising: a first industrial machine configured to control a second industrial machine based on each of a plurality of variables; and circuitry configured to input, to the first industrial machine, a control command relating to an operation of at least one of the first industrial machine or the second industrial machine, wherein the first industrial machine rewrites, based on the control command, at least one variable defined as a rewritable variable among the plurality of variables.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: April 9, 2024
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Takeshi Nagata, Takahiko Suzuki, Shinichiro Obata
  • Patent number: 11955917
    Abstract: A motor control system includes host control circuitry configured to generate a first control command; a plurality of motor control apparatuses configured to control a plurality of motors, respectively, based on the first control command; and reference information output circuitry configured to output reference information to one of the plurality of motor control apparatuses which is configured to control one of the plurality of motors. The reference information relates to control of the plurality of motors. Each of the plurality of motor control apparatuses corresponds to a corresponding motor among the plurality of motors and includes information sharing circuitry configured to share the reference information among the plurality of motor control apparatuses via data communication; command conversion circuitry configured to convert the reference information into a second control command; and motor control circuitry configured to control the corresponding motor based on the second control command.
    Type: Grant
    Filed: September 7, 2022
    Date of Patent: April 9, 2024
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Toshinobu Kira, Tadashi Okubo, Isamu Matsumura, Ryo Ota, Yu Katono
  • Patent number: 11956092
    Abstract: A communication system includes a master device, a connector, a superordinate trunk cable connecting the master device and the connector, a superordinate slave device connected to the connector, a subordinate slave device, and a subordinate trunk cable connecting the connector and the subordinate slave device. The connector includes a superordinate power line via which power is supplied from the master device, a power branching unit to divide the superordinate power line into a first power line connected to the superordinate slave device and a second power line connected to the subordinate slave device, a superordinate signal line via which communication data between the master device and the superordinate slave device is configured to be transmitted, and a subordinate signal line via which communication data between the superordinate slave device and the subordinate slave device is configured to be transmitted.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: April 9, 2024
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Hidetsugu Koga, Kunihiko Ogawa, Isamu Matsumura, Junya Hisamatsu, Yasuhiro Matsutani
  • Publication number: 20240083041
    Abstract: A robot includes a speed reducer that increases a first torque output from a motor and outputs a second torque, a torque sensor including an output part that outputs the second torque output from the speed reducer, and a sensor part that detects at least a torque applied to the output part, and a damper that is positioned in a transmission path of the second torque from the speed reducer to the torque sensor and damps transmission of the second torque.
    Type: Application
    Filed: November 21, 2023
    Publication date: March 14, 2024
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Fei ZHAO, Kumiko TOMA, Shinsuke KUCHIWANO, Eiji FUJITSU, Satoshi SUEYOSHI
  • Patent number: 11929695
    Abstract: A control device which includes a power conversion circuit configured to supply driving power to an electric motor, a magnetic flux estimation circuit configured to estimate a primary magnetic flux of the motor, and a voltage command generation circuit (control circuit) configured to control the conversion circuit based on an estimation result of the primary magnetic flux, in which the estimation circuit performs, when an operating speed of the motor is less than a predetermined level, a first estimation of estimating the primary magnetic flux based on an output current to the motor and an inductance thereof, and performs, when the speed exceeds a predetermined level, a second estimation of estimating the primary magnetic flux by estimating a magnetic flux differential value based on an output voltage of the conversion circuit and integrating the value using, as an initial value, an estimation result by the first estimation.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: March 12, 2024
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Takahiro Saeki, Shingo Fukumaru
  • Patent number: 11929277
    Abstract: A pre-aligner for pre-aligning a wafer having a notch. The pre-aligner includes a wafer platform having a wafer receiving surface, and a drive device. A detector is provided to detect the notch, and a memory is provided to store a notch window defining a range of angles in which the notch is predicted to be located in relation to a start position. A controller performs a pre-alignment operation where the wafer is rotated from the start position to an alignment location. The controller performs the operation such that the wafer is rotated at maximum acceleration/deceleration values from the start position to a notch location detected by the detector: where the operation is limited to a maximum velocity for rotation of the wafer from the start position to a notch window; and where the operation is limited to a scanning velocity within the notch window until the notch location is detected.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: March 12, 2024
    Assignees: KABUSHIKI KAISHA YASKAWA DENKI, YASKAWA AMERICA, INC.
    Inventors: John Charles Rogers, Margaret Kathleen Swiecicki
  • Publication number: 20240075639
    Abstract: A robot includes a base, a pivot base, an upper arm, and a lower arm. The base is fixed to an installation surface. The pivot base has a pivot base proximal end which is connected to the base such that the pivot base is rotatable around a first axis along a vertical direction. The lower arm includes a first extending portion, a second extending portion, and a connecting portion. The connecting portion has a hollow structure and connects the first extending portion and the second extending portion such that the first arm proximal end faces the second arm proximal end and such that the first arm distal end faces the second arm distal end. The connecting portion includes a reinforcing portion in the hollow structure. The reinforcing portion includes ribs which connect opposed inner walls of the connecting portion and which cross each other.
    Type: Application
    Filed: August 17, 2023
    Publication date: March 7, 2024
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Kanji SUGIMORI, Yuto TANAKA, Nobuhiko MIHARA, Hidenori MATSUURA
  • Publication number: 20240066694
    Abstract: A robot control system includes processing circuitry that generates an inquiry for a user while a robot is executing a task, identifies an action of the user in response to the inquiry using a sensor, complements at least part of the task based on the identified action, and controls the robot such that the robot executes the complemented at least part of the task.
    Type: Application
    Filed: August 11, 2023
    Publication date: February 29, 2024
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventor: Tatsuya KITTAKA
  • Patent number: 11914343
    Abstract: A command generation device to control a motor includes command input circuitry configured to receive a first command, first intermediate data calculation circuitry configured to calculate first intermediate data based on the first command, delay time setting circuitry configured to determine a delay time based on the first command, second intermediate data calculation circuitry configured to calculate second intermediate data by smoothing the first intermediate data based on the delay time, and command output circuitry configured to calculate, based on the second intermediate data, a second command according to which the motor is controlled. A first time period during which positioning the motor based on the first command is completed when the first intermediate data is smoothed is longer by the delay time than a second time period during which positioning the motor based on the first command is completed when the first intermediate data is not smoothed.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: February 27, 2024
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Kenichi Hirose, Yasuhiro Suzuki, Atsuro Tandai, Kenshiro Yokoi
  • Patent number: 11898922
    Abstract: A torque sensor includes: a strain body; and an optical sensor configured to detect a deformation of the strain body. The strain body includes an outer peripheral portion having a ring shape, and an inner peripheral portion of which at least a part is disposed inside the outer peripheral portion in a radial direction. The optical sensor includes a scale fixed to one of the outer peripheral portion and the inner peripheral portion, and disposed between the outer peripheral portion and the inner peripheral portion, and a detector fixed to a remaining one of the outer peripheral portion and the inner peripheral portion, and disposed to face the scale between the outer peripheral portion and the inner peripheral portion.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: February 13, 2024
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Fei Zhao, Kumiko Toma, Takehito Soga, Kenichi Sadakane, Yasushi Yoshida
  • Patent number: 11899428
    Abstract: A task resumption system including processing circuitry that receives a task resumption specification for task resumption by a device when the device, which sequentially performs multiple tasks, stops during processing, acquires a current state of the device, acquires a resume state corresponding to the task resumption of the device, causes the device to transition from the current state to the resume state, and causes the device to resume the task according to the resume state.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: February 13, 2024
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventor: Takashi Nagasaki
  • Publication number: 20240030850
    Abstract: A power conversion device includes a power conversion circuit that converts primary-side power to secondary-side power and supplies the secondary-side power to an electric motor, and circuitry including a voltage command generator that generates a voltage command in a rotating coordinate system that rotates in synchronization with a magnetic pole position of the electric motor, based on a current command in the rotating coordinate system and a mutual inductance between a first coordinate axis and a second coordinate axis of the rotating coordinate system, and a controller that controls the power conversion circuit to apply a secondary-side voltage corresponding to the voltage command to the electric motor.
    Type: Application
    Filed: October 5, 2023
    Publication date: January 25, 2024
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Keita SHIMAMOTO, Shinya MORIMOTO
  • Patent number: 11878429
    Abstract: A robot control apparatus includes a drive controller configured to control a plurality of motors which are configured to drive a plurality of link mechanisms of a parallel link robot, respectively, and abnormality determination circuitry configured to determine based on state data of the plurality of motors whether at least one of collision of the parallel link robot and dislocation in the link mechanisms occurs.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: January 23, 2024
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Yasufumi Yoshiura, Teruhisa Kitagawa
  • Patent number: 11872686
    Abstract: A robot system is provided, which includes a paint booth, and a pretreatment robot configured to perform painting pretreatment on a workpiece that is an object to be painted, the pretreatment robot being an explosion-proof robot disposed in the paint booth and including an end effector used for the painting pretreatment.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: January 16, 2024
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Tsuyoshi Konno, Katsuhiko Yoshino, Manabu Iida
  • Patent number: 11860007
    Abstract: An encoder includes a scale and a sensor. The scale has first and second absolute patterns. The sensor includes a light source, and first and second absolute light receivers. The first and second absolute light receivers receive light from the first and second absolute patterns, respectively. The first absolute light receiver receives light from the first pattern and includes first and second light receiving elements. Each first light receiving elements outputs a first signal with a first phase. Each second light receiving elements outputs a first signal with a second phase. The first and second light receiving elements are arranged alternately. The second absolute light receiver includes third and fourth light receiving elements. Each third light receiving element outputs a second signal with the first phase. The third and fourth light receiving elements are arranged alternately. Each fourth light receiving element outputs a second signal with the second phase.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: January 2, 2024
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Hiroshi Takada, Yasushi Yoshida, Shiro Yoshidomi, Masanobu Harada, Yasuhiro Matsutani, Daisuke Furukawa
  • Patent number: 11852693
    Abstract: A cable deterioration diagnosis device configured to diagnose deterioration of a cable having a plurality of electrical wires including one or more signal wires configured to transmit signals between a first device and a second device, and includes a test signal output unit configured to output a wave-like test signal to a test signal transmitting wire independent of the one or more signal wires among the plurality of electrical wires, a test signal extraction unit configured to extract a received test signal corresponding to the test signal from a signal propagated in a test signal receiving wire independent of the one or more signal wires and the test signal transmitting wire among the plurality of electrical wires, and a deterioration detection unit configured to detect the deterioration of the cable based on the test signal and the received test signal.
    Type: Grant
    Filed: July 15, 2022
    Date of Patent: December 26, 2023
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventor: Hiroyuki Kita