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).
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Patent number: 10414287Abstract: 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: GrantFiled: August 6, 2015Date of Patent: September 17, 2019Assignees: DENSO CORPORATION, NISSAN MOTOR CO., LTD.Inventors: Syo Hashimoto, Shuichi Orita
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Patent number: 10035504Abstract: 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: GrantFiled: August 21, 2015Date of Patent: July 31, 2018Assignees: DENSO CORPORATION, NISSAN MOTOR CO., LTD.Inventors: Syo Hashimoto, Shuichi Orita
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Publication number: 20170267229Abstract: 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: ApplicationFiled: August 21, 2015Publication date: September 21, 2017Applicants: DENSO CORPORATION, NISSAN MOTOR CO., LTD.Inventors: Syo HASHIMOTO, Shuichi ORITA
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Publication number: 20170217332Abstract: 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: ApplicationFiled: August 6, 2015Publication date: August 3, 2017Applicants: DENSO CORPORATION, NISSAN MOTOR CO., LTD.Inventors: Syo HASHIMOTO, Shuichi ORITA
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Patent number: 9533601Abstract: 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: GrantFiled: August 19, 2015Date of Patent: January 3, 2017Assignee: DENSO CORPORATIONInventor: Syo Hashimoto
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Patent number: 9517704Abstract: 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: GrantFiled: August 19, 2015Date of Patent: December 13, 2016Assignee: DENSO CORPORATIONInventor: Syo Hashimoto
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Publication number: 20160052422Abstract: 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: ApplicationFiled: August 19, 2015Publication date: February 25, 2016Inventor: Syo HASHIMOTO
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Publication number: 20160056739Abstract: 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: ApplicationFiled: August 19, 2015Publication date: February 25, 2016Applicant: DENSO CORPORATIONInventor: Syo HASHIMOTO