Patents by Inventor Yu Sasaki
Yu Sasaki 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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Publication number: 20190369523Abstract: An image forming apparatus includes a developer information acquisition unit. The developer information acquisition unit performs a developer deterioration information acquisition operation. In the developer deterioration information acquisition operation, the developer information acquisition unit acquires a tilt of a measurement straight line representing the relationship between the change amount of the frequency in a first measurement toner image forming operation and the density change amount of the measurement toner image based on the change amount of the frequency in the first measurement toner image forming operation and a result of detecting density of the measurement toner image in a density detecting unit, and acquires a toner charging amount based on the acquired tilt of the measurement straight line and the reference information in the storage unit so as to acquire information relating to deterioration of developer based on the acquired toner charging amount.Type: ApplicationFiled: May 29, 2019Publication date: December 5, 2019Inventors: Tamotsu Shimizu, Akifumi Yamaguchi, Yasuhiro Tauchi, Eiji Gyotoku, Yu Sasaki
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Publication number: 20190372503Abstract: A motor control apparatus includes an inverter comprising switching elements, current detection means for detecting a phase current value output from the inverter to each phase of a three-phase AC motor, conversion means for converting the phase current value into a digital AD conversion value, and modulation means for comparing a phase voltage command value based on the AD conversion value from the conversion means with a PWM counter value generated using a timer operating at predetermined cycles to generate a PWM signal and outputting the generated PWM signal to the inverter to thereby switch the switching elements of the inverter and control the three-phase AC motor. The conversion means outputs the AD conversion value acquired by converting the phase current value at a timing when a rectangular width of a rectangular wave of a phase voltage value corresponding to the PWM counter value is long.Type: ApplicationFiled: April 17, 2019Publication date: December 5, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akira HATANO, Yu SASAKI, Yoshihiro OKUMATSU, Hiroyuki IYAMA, Yuki NOMURA
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Publication number: 20190372498Abstract: A motor control apparatus includes an inverter comprising switching elements, current detection means for detecting a phase current value, conversion means for converting the phase current value into a digital AD conversion value, and current control means for controlling a three-phase AC motor by switching the switching elements using a current command value based on the AD conversion value. When the conversion means determines that an amplitude of the current command value is greater than or equal to a threshold, it acquires the phase current value at timings of at least one of t=?/8, 3?/8 and t=5?/8, 7?/8 converts the acquired phase current value into the AD conversion value. When the conversion means determines that the amplitude of the current command value is smaller than the threshold, it acquires the phase current value at a timing of t=?/2, converts the acquired phase current value into the AD conversion value.Type: ApplicationFiled: April 2, 2019Publication date: December 5, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yu SASAKI, Yuki NOMURA
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Patent number: 10472719Abstract: A nozzle for supplying a fluid includes a tubular part including a tubular passage thereinside and a fluid discharge surface having a plurality of fluid discharge holes formed therein along a lengthwise direction of the tubular passage. A partition plate is provided in the tubular passage and extends along the lengthwise direction so as to partition the tubular passage into a first area including the fluid discharge surface and a second area without the fluid discharge surface. The partition plate has distribution holes whose number is less than a number of the plurality of fluid discharge holes in the lengthwise direction. A fluid introduction passage is in communication with the second area.Type: GrantFiled: November 5, 2015Date of Patent: November 12, 2019Assignee: Tokyo Electron LimitedInventors: Yu Wamura, Fumiaki Hayase, Masahiko Kaminishi, Kosuke Takahashi, Hiroko Sasaki, Yu Sasaki
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Publication number: 20190288626Abstract: A motor control apparatus includes a current estimation unit configured to output a detected current value corresponding to each of the three-phase AC currents based on the measured current value and rotor rotation angle information of the motor. The current estimation unit defines a phase whose duty ratio of a driving pulse supplied to an inverter circuit, which generates the three-phase AC currents, becomes more than or equal to an operation switching threshold as an estimation target phase, calculates, for the estimation target phase, an estimated current value based on a coefficient value, which is calculated from the measured current value by the current measurement unit in a period in which the duty ratio of the driving pulse is lower than the operation switching threshold, and the rotor rotation angle information, and outputs the calculated estimated current value as the detected current value of the estimation target phase.Type: ApplicationFiled: January 23, 2019Publication date: September 19, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masaki YAMADA, Hiroyuki IYAMA, Yu SASAKI
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Publication number: 20190256757Abstract: The present disclosure provides a coolant composition comprising acetate as a freezing-point depressant, which has low corrosiveness to metal such as aluminum and hardly deteriorates rubber. The present disclosure provides a coolant composition comprising water and acetate, wherein the coolant composition further comprises: an aliphatic polyol compound; an azole compound; at least one selected from phosphoric acid and a salt thereof; at least one selected from carboxylic acid and a salt thereof in an amount of 0.1% to 10% by weight, with respect to the total amount of the coolant composition; at least one selected from a calcium compound, a magnesium compound, and a strontium compound in an amount of 0.0001% to 0.2% by weight in terms of nitrate, with respect to the total amount of the coolant composition; and at least one selected from tartaric acid and a salt thereof in an amount of 0.001% to 1.0% by weight in terms of tartaric acid, with respect to the total amount of the coolant composition.Type: ApplicationFiled: February 11, 2019Publication date: August 22, 2019Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, JAPAN CHEMICAL INDUSTRIES CO., LTD.Inventors: Yasuaki KODAMA, Hiroyuki ARAI, Masayuki NAGASAWA, Yoshimichi UMEHARA, Yousuke KISHINO, Yu SASAKI
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Publication number: 20190243355Abstract: A remote control system includes: a moving object including shooting means, and image quality changing means; controller means by which an operator remotely controls the moving object; and display means for cutting out a predetermined range from the image data transmitted from the image quality changing means according to a direction in which the operator is facing and displaying the cut-out predetermined range for the operator. The image quality changing means increases a frame rate of the image data taken by the shooting means and lowers the resolution of the image data according to the increase in the frame rate when at least one of following conditions is satisfied: a condition that a moving speed of the moving object increases; and a condition that a setting is changed through the controller means so that the frame rate of the image data taken by the shooting means increases.Type: ApplicationFiled: January 7, 2019Publication date: August 8, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroki IZU, Yu Sasaki
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Patent number: 10374541Abstract: A motor control system includes a motor, a resolver configured to detect a rotation angle of the motor, a resolver/digital converter configured to convert an analog angle signal output from the resolver into a digital angle signal, and a motor control unit configured to control the motor based on the digital angle signal output from the resolver/digital converter and determine, when an integrated value obtained by integrating the digital angle signal at a predetermined time interval is not within a threshold range, that the resolver/digital converter is abnormal. The motor control unit increases the time interval for the integration when a rotation speed of the motor decreases and decreases the time interval for the integration when the rotation speed of the motor increases.Type: GrantFiled: March 29, 2018Date of Patent: August 6, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuya Yamamoto, Yu Sasaki
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Publication number: 20190216669Abstract: A first exemplary aspect is a walking training apparatus including: an walking assistance apparatus attached to a lower limb of a trainee; at least one wire connected to the lower limb directly or through the walking assistance apparatus; a first wire winding mechanism configured to wind the wire for applying a pull-up force to the wire; a sensor for detecting displacement information according to a displacement of a position connected to the wire in a lateral direction; and a controller configured to control the first wire winding mechanism based on the displacement information.Type: ApplicationFiled: December 5, 2018Publication date: July 18, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Daiki Fukunaga, Kanako Suzuki, Yu Sasaki, Uori Koike, Masatomo Tanaka
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Publication number: 20190105218Abstract: A walking training system includes: a treadmill on which a walking trainee walks; a walking assistance apparatus that is mounted on a leg part of the walking trainee and assists walking of the walking trainee; and control means for controlling an operation of the walking assistance apparatus. The control means controls the operation of the walking assistance apparatus so as to cause the walking trainee to approach a reference position when the trainee is spaced apart from the reference position of the treadmill by a predetermined distance or more in a walking front/back direction while the walking trainee is walking on the treadmill, and increases the predetermined distance when at least one of a walking training amount of the walking trainee, a walking training level of the walking trainee set in the walking training system, and the speed of the treadmill is larger/higher/greater than a predetermined amount, level, and speed.Type: ApplicationFiled: September 17, 2018Publication date: April 11, 2019Applicant: Toyota Jidosha Kabushiki KaishaInventors: Hiroki Izu, Yu Sasaki, Kazuya Yamamoto, Uori Koike, Masatomo Tanaka
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Patent number: 10181749Abstract: A charging system that includes a charging device and a secondary battery device with improved safety is provided. When the secondary battery device has been connected to a charging terminal of the charging device, a DC voltage for inspection is supplied from a DC power supply unit to the charging terminal to detect a DC signal by a DC signal detection unit, and an AC voltage for inspection is supplied from an AC power supply unit to the charging terminal to detect an AC signal by an AC signal detection unit. The secondary battery device is started to be charged only when the value of the DC signal falls within a reference range defined by a resistance value of the secondary battery device and the value of the AC signal falls within a reference range defined by an impedance value of the secondary battery device.Type: GrantFiled: September 19, 2017Date of Patent: January 15, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroki Izu, Yu Sasaki, Yoshihiro Okumatsu, Takahiro Nakayama
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Publication number: 20190001537Abstract: A pad main body is bonded integrally with an inner pad while covering the front side of the inner pad. A back-side reinforced fabric located on the back side of the pad main body and the inner pad is integrally bonded on the back side of the inner pad and the pad main body by impregnation of foamed synthetic resin materials constituting the inner pad and the pad main body. This allows impregnation of the foamed synthetic resin materials in the back-side reinforced fabric located on the back side of the inner pad and the pad main body. This consequently allows providing a high hardness on the back side of the inner pad while ensuring hardness on the back side of the pad main body.Type: ApplicationFiled: July 19, 2018Publication date: January 3, 2019Applicant: Toyo Tire & Rubber Co., Ltd.Inventors: Haruo Nakamura, Takashi Sakazume, Yu Sasaki
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Patent number: 10159872Abstract: A balance training device includes an inverted two-wheel vehicle, a posture detection unit that detects a posture of the inverted two-wheel vehicle, a control unit that enables control of the inverted two-wheel vehicle so that the inverted two-wheel vehicle moves according to the posture of the inverted two-wheel vehicle detected by the posture detection unit and control of the inverted two-wheel vehicle so that the inverted two-wheel vehicle is forcibly moved in an arbitrary direction irrespective of the posture of the inverted two-wheel vehicle, and a position determining unit that determines a position of the inverted two-wheel vehicle. When a distance between the obtained position of the inverted two-wheel vehicle and the reference position is greater than or equal to a threshold, the control unit suppresses the control to forcibly move the inverted two-wheel vehicle in a direction from a reference position to the position of the inverted two-wheel vehicle.Type: GrantFiled: September 12, 2016Date of Patent: December 25, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yu Sasaki, Masahiro Takahashi
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Publication number: 20180342972Abstract: A motor control system includes a motor, a resolver configured to detect a rotation angle of the motor, a resolver/digital converter configured to convert an analog angle signal output from the resolver into a digital angle signal, and a motor control unit configured to control the motor based on the digital angle signal output from the resolver/digital converter and determine, when an integrated value obtained by integrating the digital angle signal at a predetermined time interval is not within a threshold range, that the resolver/digital converter is abnormal. The motor control unit increases the time interval for the integration when a rotation speed of the motor decreases and decreases the time interval for the integration when the rotation speed of the motor increases.Type: ApplicationFiled: March 29, 2018Publication date: November 29, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuya YAMAMOTO, Yu SASAKI
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Patent number: 10131358Abstract: A vehicle control apparatus which includes an engine, an automatic transmission, and drive wheels transmitted with the power of the engine through the automatic transmission, the automatic transmission including a torque converter connected with the engine, a transmission mechanism connected with the torque converter, the torque converter having a pump impeller connected with the engine, and a turbine runner connected with the transmission mechanism, the vehicle control apparatus for a vehicle further including: an input shaft rotational speed sensor that detects the rotational speed Nt of the turbine runner, and a control unit to control the engine to have the rotational speed Ne of the engine raised when a determination condition in which the rotational speed Nt of the turbine runner is not raised even within a standard time T1 lapsed after the engine is started is established.Type: GrantFiled: November 29, 2013Date of Patent: November 20, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yu Sasaki, Takeshi Ishiwada, Shuji Toyokawa
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Patent number: 10086541Abstract: A pad main body is bonded integrally with an inner pad while covering the front side of the inner pad. A back-side reinforced fabric located on the back side of the pad main body and the inner pad is integrally bonded on the back side of the inner pad and the pad main body by impregnation of foamed synthetic resin materials constituting the inner pad and the pad main body. This allows impregnation of the foamed synthetic resin materials in the back-side reinforced fabric located on the back side of the inner pad and the pad main body. This consequently allows providing a high hardness on the back side of the inner pad while ensuring hardness on the back side of the pad main body.Type: GrantFiled: November 7, 2014Date of Patent: October 2, 2018Assignee: TOYO TIRE & RUBBER CO., LTD.Inventors: Haruo Nakamura, Takashi Sakazume, Yu Sasaki
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Publication number: 20180258527Abstract: A film forming apparatus includes first and second processing gas supply parts for respectively supplying first and second processing gases to the substrate, and a separation region formed between first and second processing regions to separate an atmosphere of the first processing region to which the first processing gas is supplied and an atmosphere of the second processing region to which the second processing gas is supplied. The separation region includes: a separation region forming member including edge portions radially extending from a rotation center to a peripheral edge of a rotary table and for forming a narrow space between the edge portions and the rotary table, and a concave portion provided in a region sandwiched between adjacent edge portions and for forming a buffer space; and a separation gas supply part for supplying a separation gas into the buffer space.Type: ApplicationFiled: March 7, 2018Publication date: September 13, 2018Inventors: Yu SASAKI, Kosuke TAKAHASHI, Fumiaki HAYASE
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Patent number: 10053776Abstract: A method of detoxifying an exhaust pipe in a film forming apparatus configured to supply a raw material gas contending a harmful component and a reaction gas capable of generating a harmless reaction product by reaction with the raw material gas into a process chamber to perform a film forming process on a substrate while independently exhausting the raw material gas and the reaction gas from a raw material exhaust pipe and a reaction gas exhaust pipe connected to the process chamber, respectively, is provided. The method includes supplying the reaction gas into the raw material exhaust pipe to detoxify an interior of the raw material exhaust pipe during a predetermined period in which the film forming apparatus is operated and the film forming process is not performed.Type: GrantFiled: January 21, 2016Date of Patent: August 21, 2018Assignee: TOKYO ELECTRON LIMITEDInventors: Yu Wamura, Fumiaki Hayase, Masahiko Kaminishi, Kosuke Takahashi, Yu Sasaki, Hiroko Sasaki
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Publication number: 20180229074Abstract: Provided is a balance training apparatus operating in conjunction with an inverted pendulum moving apparatus on which a trainee rides and performs a moving operation. The balance training apparatus includes a detector configured to detect a position of the moving apparatus, and a controller configured to set a task for the trainee to travel back and forth from an initial position to a target position within a predetermined time and configured to superimpose a character representing the trainee at a position corresponding to a position of the moving apparatus on a video indicating progress of the task and display it on a display. The controller corrects the initial position in a task to be executed next to a position of the moving apparatus at the end of a task that has been executed last and corrects the target position according to the correction of the initial position.Type: ApplicationFiled: January 12, 2018Publication date: August 16, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yu SASAKI, Masahiro TAKAHASHI
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Patent number: 10044299Abstract: A motor driving device includes: an inverter control unit configured to generate and output a control signal for feedback-controlling a motor using a control command value for setting driving of the motor and a feedback value including a current value of driving power supplied to the motor; an inverter configured to supply driving power to the motor in accordance with the control signal output from the inverter control unit; and an abnormality detecting unit configured to detect an abnormality of the inverter. The abnormality detecting unit determines that the inverter is abnormal when a sum of three-phase AC voltage values of the driving power supplied to the motor is greater than a predetermined voltage value and a difference between the control command value supplied to the inverter control unit and the feedback value is less than a predetermined value.Type: GrantFiled: November 22, 2017Date of Patent: August 7, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yu Sasaki, Hiroyuki Iyama