Patents by Inventor Kazuya AKAO

Kazuya AKAO 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).

  • Motor driving device
    Patent number: 9444393
    Abstract: A motor driving device, which controls a rotation number of a brushed motor by outputting a command signal to a motor controller placed in a current supply path, includes: a noise detecting unit including at least one of: a high voltage side noise detecting unit which detects high voltage side noise from brush noise included in the monitor voltage, based on whether a monitor voltage is larger than a first threshold voltage; and a low voltage side noise detecting unit which detects low voltage side noise from the brush noise included in the monitor voltage, based on whether the monitor voltage is smaller than a second threshold voltage; and a calculating unit which outputs the command signal to the motor controller to control the rotation number of the motor to reduce a occurrence number of the brush noise, based on at least one of the occurrence numbers.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: September 13, 2016
    Assignees: ADVICS CO., LTD., DENSO CORPORATION
    Inventors: Kazuya Akao, Masatoshi Ota
  • MOTOR DRIVING DEVICE
    Publication number: 20140239866
    Abstract: A motor driving device, which controls a rotation number of a brushed motor by outputting a command signal to a motor controller placed in a current supply path, includes: a noise detecting unit including at least one of: a high voltage side noise detecting unit which detects high voltage side noise from brush noise included in the monitor voltage, based on whether a monitor voltage is larger than a first threshold voltage; and a low voltage side noise detecting unit which detects low voltage side noise from the brush noise included in the monitor voltage, based on whether the monitor voltage is smaller than a second threshold voltage; and a calculating unit which outputs the command signal to the motor controller to control the rotation number of the motor to reduce a occurrence number of the brush noise, based on at least one of the occurrence numbers.
    Type: Application
    Filed: February 24, 2014
    Publication date: August 28, 2014
    Applicants: DENSO CORPORATION, ADVICS CO., LTD.
    Inventors: Kazuya AKAO, Masatoshi OTA