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).
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Patent number: 12261554Abstract: 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: GrantFiled: January 29, 2021Date of Patent: March 25, 2025Assignee: HITACHI ASTEMO, LTD.Inventors: Yasuaki Sato, Keisuke Suzuki, Katsuhiro Hoshino, Hideki Sekiguchi
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Patent number: 12036993Abstract: 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: GrantFiled: June 19, 2019Date of Patent: July 16, 2024Assignee: Hitachi Astemo, Ltd.Inventors: Yasuaki Sato, Hiroyuki Ooiwa, Hideki Sekiguchi, Hiroyuki Sakamoto, Shogo Miyamoto
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Publication number: 20240204705Abstract: 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: ApplicationFiled: February 15, 2022Publication date: June 20, 2024Applicant: HITACHI ASTEMO, LTD.Inventors: Yasuaki SATO, Keisuke SUZUKI, Katsuhiro HOSHINO, Hideki SEKIGUCHI
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Publication number: 20230188070Abstract: 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: ApplicationFiled: January 29, 2021Publication date: June 15, 2023Applicant: HITACHI ASTEMO, LTD.Inventors: Yasuaki SATO, Keisuke SUZUKI, Katsuhiro HOSHINO, Hideki SEKIGUCHI
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Publication number: 20230166883Abstract: 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: ApplicationFiled: June 14, 2021Publication date: June 1, 2023Applicant: MITSUI CHEMICALS, INC.Inventors: Masaru KAWAGUCHI, Yasuaki SATO, Mai SHIRAI
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Publication number: 20230142471Abstract: 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: ApplicationFiled: November 9, 2020Publication date: May 11, 2023Applicant: KYOWA LEATHER CLOTH CO., LTD.Inventors: Yasuaki SATO, Yutaka SHIGENOBU
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Publication number: 20210221379Abstract: 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: ApplicationFiled: June 19, 2019Publication date: July 22, 2021Applicant: Hitachi Automotive Systems, Ltd.Inventors: Yasuaki SATO, Hiroyuki OOIWA, Hideki SEKIGUCHI, Hiroyuki SAKAMOTO, Shogo MIYAMOTO
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Patent number: 11059374Abstract: 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: GrantFiled: January 29, 2018Date of Patent: July 13, 2021Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Hiroyuki Sakamoto, Hideki Sekiguchi, Yasuaki Sato
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Patent number: 11022214Abstract: 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: GrantFiled: June 19, 2018Date of Patent: June 1, 2021Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yasuaki Sato, Hideki Sekiguchi, Hiroyuki Sakamoto
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Publication number: 20210080001Abstract: 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: ApplicationFiled: June 19, 2018Publication date: March 18, 2021Inventors: Yasuaki SATO, Hideki SEKIGUCHI, Hiroyuki SAKAMOTO
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Publication number: 20200189557Abstract: 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: ApplicationFiled: January 29, 2018Publication date: June 18, 2020Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Hiroyuki SAKAMOTO, Hideki SEKIGUCHI, Yasuaki SATO
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Patent number: 4835735Abstract: 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: GrantFiled: October 21, 1987Date of Patent: May 30, 1989Assignee: Fujitsu LimitedInventors: Yoshiki Ikegami, Yoshio Hayakawa, Yasuaki Sato
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Patent number: 4677585Abstract: 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: GrantFiled: December 18, 1985Date of Patent: June 30, 1987Assignee: Fujitsu LimitedInventors: Yoshiki Ikegami, Yasuaki Sato, Mitsutoshi Ishimaru
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Patent number: 4663731Abstract: 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: GrantFiled: January 26, 1984Date of Patent: May 5, 1987Assignee: Fujitsu LimitedInventors: Yoshiki Ikegami, Fumio Matsumoto, Yasuaki Sato, Yoshio Hayakawa
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Patent number: 4598284Abstract: 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: GrantFiled: October 11, 1983Date of Patent: July 1, 1986Assignee: Fujitsu LimitedInventors: Yoshiki Ikegami, Yasuaki Sato
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Patent number: 4572657Abstract: 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: GrantFiled: June 3, 1983Date of Patent: February 25, 1986Assignee: Konisiroku Photo Industry Co., Ltd.Inventors: Tadashi Amano, Yasuaki Sato, Yasuo Ohkoshi
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Patent number: 4472973Abstract: 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: GrantFiled: June 18, 1982Date of Patent: September 25, 1984Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.Inventors: Kazuo Sugai, Yasuaki Sato, Hirotoshi Kino, Shuichi Hiruoka
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Patent number: D301338Type: GrantFiled: December 24, 1985Date of Patent: May 30, 1989Assignee: Nakayo Telecommunications Inc.Inventors: Yasuaki Sato, Ichiro Sato