Patents by Inventor Yasuaki Sato

Yasuaki Sato 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: 12261554
    Abstract: Provided is a motor controller that can estimate the magnetic flux of a magnet without changing a current of an electric motor. A motor controller 1 includes a current detecting unit 15 that detects a current of an electric motor 5, a current stability determining unit 10 that determines whether or not a current detected by the current detecting unit 15 is stable, and a magnetic flux calculating unit (filters 8a to 8e, a current conversion unit 4b, a resistance calculating unit 9, a magnet magnetic flux estimating unit 11) that based on a determination made by the current stability determining unit 10 as to current stability, calculates the magnetic flux of a magnet of the electric motor 5, according to a voltage equation in a rotating coordinate system, to output the calculated magnet flux.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: March 25, 2025
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Yasuaki Sato, Keisuke Suzuki, Katsuhiro Hoshino, Hideki Sekiguchi
  • Patent number: 12036993
    Abstract: There is provided a control device for vehicles which can improve quietness and fuel economy, while maintaining high responsiveness to acceleration of a vehicle. Therefore, the control device 100 for vehicles includes a gear ratio control unit 10 that controls a gear ratio of a vehicle V, and a determination unit 20 that determines whether or not there is an acceleration limit of the vehicle V. The gear ratio control unit 10 is configured to limit an increase in gear ratio Rt, when the determination unit 20 determines that there is an acceleration limit.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: July 16, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Yasuaki Sato, Hiroyuki Ooiwa, Hideki Sekiguchi, Hiroyuki Sakamoto, Shogo Miyamoto
  • Publication number: 20240204705
    Abstract: A motor control device includes: an inverter that supplies an alternating current to a motor mounted on a vehicle; a current detection unit that detects the alternating current; a position detection unit that detects a rotor phase angle of the motor; and an inverter control unit that controls the inverter based on a current value detected by the current detection unit and the rotor phase angle detected by the position detection unit, wherein the inverter control unit, in response to a timing at which vibration of the vehicle is generated, changes a current phase angle of the motor, and makes a cycle of a waveform of a resultant current of the alternating current irregular.
    Type: Application
    Filed: February 15, 2022
    Publication date: June 20, 2024
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Yasuaki SATO, Keisuke SUZUKI, Katsuhiro HOSHINO, Hideki SEKIGUCHI
  • Publication number: 20230188070
    Abstract: Provided is a motor controller that can estimate the magnetic flux of a magnet without changing a current of an electric motor. A motor controller 1 includes a current detecting unit 15 that detects a current of an electric motor 5, a current stability determining unit 10 that determines whether or not a current detected by the current detecting unit 15 is stable, and a magnetic flux calculating unit (filters 8a to 8e, a current conversion unit 4b, a resistance calculating unit 9, a magnet magnetic flux estimating unit 11) that based on a determination made by the current stability determining unit 10 as to current stability, calculates the magnetic flux of a magnet of the electric motor 5, according to a voltage equation in a rotating coordinate system, to output the calculated magnet flux.
    Type: Application
    Filed: January 29, 2021
    Publication date: June 15, 2023
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Yasuaki SATO, Keisuke SUZUKI, Katsuhiro HOSHINO, Hideki SEKIGUCHI
  • Publication number: 20230166883
    Abstract: In a xylylene diisocyanate-containing container including a xylylene diisocyanate and a container accommodating the xylylene diisocyanate, a resin layer is provided on an inner surface of a container.
    Type: Application
    Filed: June 14, 2021
    Publication date: June 1, 2023
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Masaru KAWAGUCHI, Yasuaki SATO, Mai SHIRAI
  • Publication number: 20230142471
    Abstract: A skin material that achieves both of a cushion-like sensation and a rupture property at low temperature environments, including: a skin layer including an olefin-based resin, an intermediate layer including a polypropylene resin, and a foam layer including an olefin-based resin, in this order.
    Type: Application
    Filed: November 9, 2020
    Publication date: May 11, 2023
    Applicant: KYOWA LEATHER CLOTH CO., LTD.
    Inventors: Yasuaki SATO, Yutaka SHIGENOBU
  • Publication number: 20210221379
    Abstract: There is provided a control device for vehicles which can improve quietness and fuel economy, while maintaining high responsiveness to acceleration of a vehicle. Therefore, the control device 100 for vehicles includes a gear ratio control unit 10 that controls a gear ratio of a vehicle V, and a determination unit 20 that determines whether or not there is an acceleration limit of the vehicle V. The gear ratio control unit 10 is configured to limit an increase in gear ratio Rt, when the determination unit 20 determines that there is an acceleration limit.
    Type: Application
    Filed: June 19, 2019
    Publication date: July 22, 2021
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Yasuaki SATO, Hiroyuki OOIWA, Hideki SEKIGUCHI, Hiroyuki SAKAMOTO, Shogo MIYAMOTO
  • Patent number: 11059374
    Abstract: The present invention is to make it possible to effectively recover regenerative energy and improve a fuel efficiency. Thus, there is provided an HCM 50 of a hybrid vehicle, in which the hybrid vehicle includes: an engine; a drive wheel to which a driving force of the engine is transmittable; a motor to which the driving force from the engine is transmittable and which is capable of transmitting a driving force to the drive wheel; and a battery which supplies power for driving the motor and stores power generated by the motor.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: July 13, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Hiroyuki Sakamoto, Hideki Sekiguchi, Yasuaki Sato
  • Patent number: 11022214
    Abstract: Provided is a transmission control device which can improve drivability in an acceleration section even while taking a reduction of fuel consumption in a deceleration section into consideration. The transmission control device (transmission controller) which controls a transmission in a running control of a vehicle includes a shift timing calculation unit which determines an acceleration position at which the vehicle accelerates on the basis of a target speed pattern generated from external information, a target gear ratio calculation unit which determines a required gear ratio which is required at the acceleration position, and a gear ratio overwriting command unit which outputs a command of overwriting the gear ratio such that the gear ratio at the acceleration position approaches the required gear ratio.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: June 1, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yasuaki Sato, Hideki Sekiguchi, Hiroyuki Sakamoto
  • Publication number: 20210080001
    Abstract: Provided is a transmission control device which can improve drivability in an acceleration section even while taking a reduction of fuel consumption in a deceleration section into consideration. The transmission control device (transmission controller) which controls a transmission in a running control of a vehicle includes a shift timing calculation unit which determines an acceleration position at which the vehicle accelerates on the basis of a target speed pattern generated from external information, a target gear ratio calculation unit which determines a required gear ratio which is required at the acceleration position, and a gear ratio overwriting command unit which outputs a command of overwriting the gear ratio such that the gear ratio at the acceleration position approaches the required gear ratio.
    Type: Application
    Filed: June 19, 2018
    Publication date: March 18, 2021
    Inventors: Yasuaki SATO, Hideki SEKIGUCHI, Hiroyuki SAKAMOTO
  • Publication number: 20200189557
    Abstract: The present invention is to make it possible to effectively recover regenerative energy and improve a fuel efficiency. Thus, there is provided an HCM 50 of a hybrid vehicle, in which the hybrid vehicle includes: an engine; a drive wheel to which a driving force of the engine is transmittable; a motor to which the driving force from the engine is transmittable and which is capable of transmitting a driving force to the drive wheel; and a battery which supplies power for driving the motor and stores power generated by the motor.
    Type: Application
    Filed: January 29, 2018
    Publication date: June 18, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Hiroyuki SAKAMOTO, Hideki SEKIGUCHI, Yasuaki SATO
  • Patent number: 4835735
    Abstract: In a card image data processing system wherein a plurality of card images are recognized as one box (2, 2'), the card images are defined by form data common to the box and card data written in fields is defined by field definition information which is of the form data, and the fields are designated for processing contents of the fields, i.e., card data; the card images, including the form data, is displayed in a first window (41, 42) of the display unit, fields of the displayed card images are designated and processing instructions for the card data prepared, and the processing instructions are displayed in an instruction window (43) of the display unit and registered in the instruction code buffer. Processing of the card data of the card images is executed based on the registered processing instructions.
    Type: Grant
    Filed: October 21, 1987
    Date of Patent: May 30, 1989
    Assignee: Fujitsu Limited
    Inventors: Yoshiki Ikegami, Yoshio Hayakawa, Yasuaki Sato
  • Patent number: 4677585
    Abstract: In a method for obtaining common mode information and common field attribute information for a plurality of card images belonging to a "box" in a data processing system, fixed information and field indicating information are written into a mode image buffer and the content of the mode image buffer is displayed on a display unit. The field indicating information written into the mode image buffer is analyzed to make field definition information tables, and a field name, for each field, is detected to make a field name table. By sorting and merging the contents of the field definition information tables and the field name table, a blank form is made.
    Type: Grant
    Filed: December 18, 1985
    Date of Patent: June 30, 1987
    Assignee: Fujitsu Limited
    Inventors: Yoshiki Ikegami, Yasuaki Sato, Mitsutoshi Ishimaru
  • Patent number: 4663731
    Abstract: A word processing system for inserting characters into a series of displayed characters within a predetermined field, including a circuit (1008) for moving a series of characters displayed on and after a cursor position to the end portion of the field by pushing an insertion key indicating the insertion of characters, a circuit (1015) for inserting a character into the cursor position and moving the cursor by pushing a character key, and a circuit (1017) for filling the spaces following the inserted characters with the previously moved series of characters.
    Type: Grant
    Filed: January 26, 1984
    Date of Patent: May 5, 1987
    Assignee: Fujitsu Limited
    Inventors: Yoshiki Ikegami, Fumio Matsumoto, Yasuaki Sato, Yoshio Hayakawa
  • Patent number: 4598284
    Abstract: A system for changing common card mode data a plurality of card images including: a memory area for old card mode data; a memory area for old card data; a memory area for card mode data; a memory area for card data; and a memory area for the field correspondence between the old and card mode data. In accordance with the content of the corresponding memory area, all or part of the old card data is transmitted from the old card data memory area to the card data memory area.
    Type: Grant
    Filed: October 11, 1983
    Date of Patent: July 1, 1986
    Assignee: Fujitsu Limited
    Inventors: Yoshiki Ikegami, Yasuaki Sato
  • Patent number: 4572657
    Abstract: A color printer wherein densities of blue, green and red colors of an object copied print with respect to an original color picture for setting standard copying conditions by using the original color picture, a copied print is made by using the original color picture for setting standard copying conditions, densities of blue, green and red colors of the copied print are measured in an optical path of copying exposure, and the standard copying conditions are set on the basis of the functions of the measured densities of the object copied print and the copied print.
    Type: Grant
    Filed: June 3, 1983
    Date of Patent: February 25, 1986
    Assignee: Konisiroku Photo Industry Co., Ltd.
    Inventors: Tadashi Amano, Yasuaki Sato, Yasuo Ohkoshi
  • Patent number: 4472973
    Abstract: An ultrasonic flaw detecting apparatus of electronically scanning type comprises a plurality of ultrasonic vibrator elements disposed in an arcuate array, wherein groups of N vibrator elements arrayed in the circumferential direction of an object under test are sequentially changed over to one another on one-by-one base to thereby scan an object under test with ultrasonic beams. By controlling phases of pulse signals applied to the individual vibrator elements, a region of focus of the ultrasonic beams is set at a predetermined depth of the object under test. For reception, only the echoes reflected from a predetermined focal range are selectively extracted by providing corresponding window or gate means.
    Type: Grant
    Filed: June 18, 1982
    Date of Patent: September 25, 1984
    Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.
    Inventors: Kazuo Sugai, Yasuaki Sato, Hirotoshi Kino, Shuichi Hiruoka
  • Patent number: D301338
    Type: Grant
    Filed: December 24, 1985
    Date of Patent: May 30, 1989
    Assignee: Nakayo Telecommunications Inc.
    Inventors: Yasuaki Sato, Ichiro Sato