Patents by Inventor Takuya OKAHARA

Takuya OKAHARA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230286150
    Abstract: A robot control device includes: a reliability computing unit that is inputted with a feature quantity obtained from a sensor signal indicating a measurement result obtained by an external sensor installed in a main body of a robot or a surrounding environment of the robot, and computes a reliability for the sensor signal on the basis of a temporal change or a spatial change of the feature quantity; a correction command value computing unit that computes a trajectory correction amount for correcting a trajectory of the robot on the basis of the reliability and correction information calculated on the basis of the feature quantity; and a command value generation unit that generates a location command value for the robot on the basis of a predetermined target trajectory of the robot and the trajectory correction amount.
    Type: Application
    Filed: September 14, 2020
    Publication date: September 14, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Koji SHIRATSUCHI, Takuya OKAHARA
  • Publication number: 20230226691
    Abstract: A robot controller includes: axis motor control units that control motors for driving axes of a robot; and an action command generation unit that generates a first action command having the shortest action time when the robot is moved from an action start point to an action goal point without considering an obstacle, and selects, from among the axes, a major axis having the longest action time when the action is performed in accordance with the first action command. The first action command includes another axis command, and a major axis command, and the action command generation unit adjusts the other axis command so as to reduce an action time according to the other axis command and outputs a second action command including the major axis command and the adjusted other axis command and corresponding to a first trajectory when determining that the first trajectory avoids a clash between the robot and the obstacle.
    Type: Application
    Filed: July 8, 2020
    Publication date: July 20, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Nanase HARUO, Kiyoshi MAEKAWA, Koji SHIRATSUCHI, Takuya OKAHARA
  • Patent number: 11045955
    Abstract: A robot control device includes: a measuring unit to measure a robot control state indicative of a position and a posture of the robot; a work area setting unit to store, for each of work processes, a work area that is defined by work movement of the worker between a start and an end of each of the work processes and includes a space a body of the worker occupies and to set the work area corresponding to the work process currently carried out by the worker based on a signal specifying the work process currently carried out by the worker; and a robot command generator to generate a motion command for the robot based on the work area and the robot control state. The generator varies the command for the robot based on whether the robot is present in the work area.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: June 29, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takuya Okahara, Koji Shiratsuchi
  • Publication number: 20210146895
    Abstract: A brake controller includes: a necessary braking force calculator to calculate a necessary braking force that is a braking force generated by a mechanical brake apparatus in order to obtain a deceleration indicated by a brake command; an initial speed acquirer to acquires an initial speed; a target pressing force calculator to calculate a target pressing force that is a force for pressing a brake shoe against a wheel in order to obtain the necessary braking force; and a target pressure calculator to calculate a target pressure indicating a pressure of a fluid inside the brake cylinder that is necessary for obtaining the target pressing force and perform feedback control to adjust the target pressure based on a feedback signal acquired from a pressure sensor.
    Type: Application
    Filed: July 25, 2018
    Publication date: May 20, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Ryohei TSUGOSHI, Shumpei ONODERA, Takuya OKAHARA
  • Patent number: 10960774
    Abstract: An automatic train operation device includes: a step command start position determining unit to determine whether a train passes through a step command start position that is a position a certain distance before a target stop position of the train; a deceleration command generating unit to generate a deceleration command to control braking force of a braking device in a section from the step command start position that the train passes through to the target stop position at which the train stops; and a travel history storage unit to store travel state information and the deceleration command for the section as a plurality of travel histories. When the step command start position is determined by the step command start position determining unit, the deceleration command generating unit generates the deceleration command by using the travel histories.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: March 30, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Takuya Okahara
  • Publication number: 20190255956
    Abstract: An automatic train operation device includes: a step command start position determining unit to determine whether a train passes through a step command start position that is a position a certain distance before a target stop position of the train; a deceleration command generating unit to generate a deceleration command to control braking force of a braking device in a section from the step command start position that the train passes through to the target stop position at which the train stops; and a travel history storage unit to store travel state information and the deceleration command for the section as a plurality of travel histories. When the step command start position is determined by the step command start position determining unit, the deceleration command generating unit generates the deceleration command by using the travel histories.
    Type: Application
    Filed: November 6, 2017
    Publication date: August 22, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventor: Takuya OKAHARA
  • Publication number: 20190134819
    Abstract: A robot control device includes: a measuring unit to measure a robot control state indicative of a position and a posture of the robot; a work area setting unit to store, for each of work processes, a work area that is defined by work movement of the worker between a start and an end of each of the work processes and includes a space a body of the worker occupies and to set the work area corresponding to the work process currently carried out by the worker based on a signal specifying the work process currently carried out by the worker; and a robot command generator to generate a motion command for the robot based on the work area and the robot control state. The generator varies the command for the robot based on whether the robot is present in the work area.
    Type: Application
    Filed: April 28, 2017
    Publication date: May 9, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takuya OKAHARA, Koji SHIRATSUCHI