Patents by Inventor Syo HASHIMOTO

Syo HASHIMOTO 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).

  • Patent number: 10414287
    Abstract: A control apparatus for a rotary electric machine extracts, based on a rotational speed of a rotating member, a vibration component included in the rotational speed of the rotating member, the vibration component being based on vibrations of a drivetrain. The control apparatus calculates, according to the extracted vibration component, compensation torque for compensating the vibrations of the drivetrain. The control apparatus performs drive control of the rotary electric machine according to the compensation torque. The control apparatus performs suppression to suppress the rotational speed of the rotating member from changing due to change of a speed change ratio.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: September 17, 2019
    Assignees: DENSO CORPORATION, NISSAN MOTOR CO., LTD.
    Inventors: Syo Hashimoto, Shuichi Orita
  • Patent number: 10035504
    Abstract: A filter processor of a control apparatus for a rotary electric machine filters target torque for the rotary electric machine to suppress a vibrational frequency component of a drivetrain using a filter having a frequency transfer characteristic. A controller performs drive control of the rotary electric machine according to the filtered target torque. A parameter calculator calculates, according to a running condition of the vehicle, a parameter associated with a request value for responsivity of output torque of the rotary electric machine with respect to the target torque. A variable setter variably sets the frequency transfer characteristic of the filter to decrease a degree of attenuation of the vibrational frequency component with an increase of the request value for the responsivity of the output torque.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: July 31, 2018
    Assignees: DENSO CORPORATION, NISSAN MOTOR CO., LTD.
    Inventors: Syo Hashimoto, Shuichi Orita
  • Publication number: 20170267229
    Abstract: A filter processor of a control apparatus for a rotary electric machine filters target torque for the rotary electric machine to suppress a vibrational frequency component of a drivetrain using a filter having a frequency transfer characteristic. A controller performs drive control of the rotary electric machine according to the filtered target torque. A parameter calculator calculates, according to a running condition of the vehicle, a parameter associated with a request value for responsivity of output torque of the rotary electric machine with respect to the target torque. A variable setter variably sets the frequency transfer characteristic of the filter to decrease a degree of attenuation of the vibrational frequency component with an increase of the request value for the responsivity of the output torque.
    Type: Application
    Filed: August 21, 2015
    Publication date: September 21, 2017
    Applicants: DENSO CORPORATION, NISSAN MOTOR CO., LTD.
    Inventors: Syo HASHIMOTO, Shuichi ORITA
  • Publication number: 20170217332
    Abstract: A control apparatus for a rotary electric machine extracts, based on a rotational speed of a rotating member, a vibration component included in the rotational speed of the rotating member, the vibration component being based on vibrations of a drivetrain. The control apparatus calculates, according to the extracted vibration component, compensation torque for compensating the vibrations of the drivetrain. The control apparatus performs drive control of the rotary electric machine according to the compensation torque. The control apparatus performs suppression to suppress the rotational speed of the rotating member from changing due to change of a speed change ratio.
    Type: Application
    Filed: August 6, 2015
    Publication date: August 3, 2017
    Applicants: DENSO CORPORATION, NISSAN MOTOR CO., LTD.
    Inventors: Syo HASHIMOTO, Shuichi ORITA
  • Patent number: 9533601
    Abstract: In a control apparatus, a filter processor filters target torque for a rotary electric machine to suppress a vibrational frequency component of a drivetrain using a filter having a frequency transfer characteristic. A controller performs drive control of the rotary electric machine according to the filtered target torque. A parameter calculator calculates, according to a running condition of the vehicle, a parameter associated with a request value for responsivity of output torque of the rotary electric machine with respect to the target torque. A variable setter variably sets the frequency transfer characteristic of the filter to decrease a degree of attenuation of the vibrational frequency component with an increase of the request value for responsivity of the actual output torque. A limiter limits a rate of change of the degree of attenuation to suppress vibrations of the drivetrain.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: January 3, 2017
    Assignee: DENSO CORPORATION
    Inventor: Syo Hashimoto
  • Patent number: 9517704
    Abstract: In a control apparatus, an extractor extracts, from a rotational speed of a rotating member, a vibration component included in the rotational speed of the rotating member. A first suppressor performs first suppression to suppress the rotational speed of the rotating member from changing due to change of a speed change ratio. A mode setter switchably sets one of an enabling mode to enable the first suppression or a disabling mode to disable the first suppression in the control apparatus according to a parameter indicative of the speed change ratio. A second suppressor performs second suppression to suppress change of the vibration component generated based on switching of one of the enabling mode and the disabling mode to the other thereof.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: December 13, 2016
    Assignee: DENSO CORPORATION
    Inventor: Syo Hashimoto
  • Publication number: 20160052422
    Abstract: In a control apparatus, a filter processor filters target torque for a rotary electric machine to suppress a vibrational frequency component of a drivetrain using a filter having a frequency transfer characteristic. A controller performs drive control of the rotary electric machine according to the filtered target torque. A parameter calculator calculates, according to a running condition of the vehicle, a parameter associated with a request value for responsivity of output torque of the rotary electric machine with respect to the target torque. A variable setter variably sets the frequency transfer characteristic of the filter to decrease a degree of attenuation of the vibrational frequency component with an increase of the request value for responsivity of the actual output torque. A limiter limits a rate of change of the degree of attenuation to suppress vibrations of the drivetrain.
    Type: Application
    Filed: August 19, 2015
    Publication date: February 25, 2016
    Inventor: Syo HASHIMOTO
  • Publication number: 20160056739
    Abstract: In a control apparatus, an extractor extracts, from a rotational speed of a rotating member, a vibration component included in the rotational speed of the rotating member. A first suppressor performs first suppression to suppress the rotational speed of the rotating member from changing due to change of a speed change ratio. A mode setter switchably sets one of an enabling mode to enable the first suppression or a disabling mode to disable the first suppression in the control apparatus according to a parameter indicative of the speed change ratio. A second suppressor performs second suppression to suppress change of the vibration component generated based on switching of one of the enabling mode and the disabling mode to the other thereof.
    Type: Application
    Filed: August 19, 2015
    Publication date: February 25, 2016
    Applicant: DENSO CORPORATION
    Inventor: Syo HASHIMOTO