Patents by Inventor Tadayoshi Iwase

Tadayoshi Iwase 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: 20230311783
    Abstract: A mounting structure (X), comprising: a cover (5) provided on an inboard side of a pillar (P) of a vehicle, and having an opening (15) facing inboard; an illuminating device (9) configured to illuminate interior of the vehicle via the opening; and an imaging device (11) configured to capture an image of the interior of the vehicle via the opening, wherein the illuminating device and imaging device are provided with respective working ends facing the interior of the vehicle which are positioned one above and inboard of another.
    Type: Application
    Filed: March 27, 2023
    Publication date: October 5, 2023
    Inventors: Kodai USUKI, Hiroyuki SUKIGARA, Tadayoshi IWASE, Hiromi SATO, Arata ISOBE, Yoshito TERAYAMA
  • Patent number: 9610973
    Abstract: A motor-driven power steering apparatus including: a base current calculator configured to calculate a base current, which is a base for a target current, based on a detected torque detected by a torque sensor; a band-pass filter configured to allow a predetermined range of frequency components of the detected torque to the pass through the band-pass filter; a base shimmy compensation current calculator configured to calculate a base shimmy compensation current, considered a base for a shimmy compensation current required to suppress a disturbance torque, based on an extracted torque after passing through the band-pass filter; a shimmy compensation current calculator configured to calculate the shimmy compensation current by correcting the base shimmy compensation current according to magnitude of amplitude of the extracted torque; and a final target current determination unit configured to determine the target current based on the base current and the shimmy compensation current.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: April 4, 2017
    Assignee: SHOWA CORPORATION
    Inventors: Kyouichi Tagami, Katsutoshi Yokoi, Eishi Ishimaru, Tadayoshi Iwase
  • Publication number: 20160280252
    Abstract: Disclosed is a motor-driven power steering apparatus including: a base current calculator configured to calculate a base current, which is a base for a target current, based on a detected torque detected by a torque sensor; a band-pass filter configured to allow a predetermined range of frequency components of the detected torque to the pass through the band-pass filter; a base shimmy compensation current calculator configured to calculate a base shimmy compensation current, which is a base for a shimmy compensation current required to suppress a disturbance torque, based on an extracted torque after passing through the band-pass filter; a shimmy compensation current calculator configured to calculate the shimmy compensation current by correcting the base shimmy compensation current according to magnitude of amplitude of the extracted torque; and a final target current determination unit configured to determine the target current based on the base current and the shimmy compensation current.
    Type: Application
    Filed: March 23, 2016
    Publication date: September 29, 2016
    Applicant: Showa Corporation
    Inventors: Kyouichi TAGAMI, Katsutoshi YOKOI, Eishi ISHIMARU, Tadayoshi IWASE
  • Patent number: 9302699
    Abstract: An electric power steering apparatus includes: a detector that detects a value corresponding to a steering torque of a steering wheel; a correcting unit that corrects a detection value detected by the detector by taking into account a hysteresis between an actual steering torque and the detection value detected by the detector; and a target current calculating unit that calculates a target current which is supplied to an electric motor on the basis of a corrected detection value corrected by the correcting unit. The correcting unit makes a correction by using a correction value corresponding to the detection value detected by the detector so as to make the hysteresis small in a case where the steering torque is small and large in a case where the steering torque is large.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: April 5, 2016
    Assignee: SHOWA CORPORATION
    Inventor: Tadayoshi Iwase
  • Publication number: 20130075191
    Abstract: An electric power steering apparatus includes: a detector that detects a value corresponding to a steering torque of a steering wheel; a correcting unit that corrects a detection value detected by the detector by taking into account a hysteresis between an actual steering torque and the detection value detected by the detector; and a target current calculating unit that calculates a target current which is supplied to an electric motor on the basis of a corrected detection value corrected by the correcting unit. The correcting unit makes a correction by using a correction value corresponding to the detection value detected by the detector so as to make the hysteresis small in a case where the steering torque is small and large in a case where the steering torque is large.
    Type: Application
    Filed: March 16, 2012
    Publication date: March 28, 2013
    Applicant: Showa Corporation
    Inventor: Tadayoshi Iwase