Patents by Inventor Yosei HIRANO

Yosei HIRANO 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).

  • Control device and speed reducer system
    Patent number: 10042343
    Abstract: This application discloses a control device for controlling a motor configured to drive an oscillatory cyclo-speed reducer including an oscillatory gear portion formed with at least one hole at an eccentric position. The control device includes an angle acquirer for acquiring input information about an input rotational angle indicating a rotational angle of the motor, an estimator for estimating an angular error between the input rotational angle and an output rotational angle indicating a rotational angle of the oscillatory cyclo-speed reducer based on a quantity of the hole(s) and a corrector for determining a compensation current value in correspondence to the angular error and setting a magnitude of a current to be supplied to the motor by correcting a command current value using the compensation current value.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: August 7, 2018
    Assignees: NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGY, NABTESCO CORPORATION
    Inventors: Kiyoshi Ohishi, Yuki Yokokura, Yosei Hirano, Koji Nakamura, Masataka Sato
  • CONTROL DEVICE AND SPEED REDUCER SYSTEM
    Publication number: 20160070247
    Abstract: This application discloses a control device for controlling a motor configured to drive an oscillatory cyclo-speed reducer including an oscillatory gear portion formed with at least one hole at an eccentric position. The control device includes an angle acquirer for acquiring input information about an input rotational angle indicating a rotational angle of the motor, an estimator for estimating an angular error between the input rotational angle and an output rotational angle indicating a rotational angle of the oscillatory cyclo-speed reducer based on a quantity of the hole(s) and a corrector for determining a compensation current value in correspondence to the angular error and setting a magnitude of a current to be supplied to the motor by correcting a command current value using the compensation current value.
    Type: Application
    Filed: September 1, 2015
    Publication date: March 10, 2016
    Inventors: Kiyoshi OHISHI, Yuki YOKOKURA, Yosei HIRANO, Koji NAKAMURA, Masataka SATO