Patents by Inventor Junya Takahashi
Junya Takahashi 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: 20190054916Abstract: The present invention provides a vehicle control device and method capable of ensuring steering accuracy. In a vehicle provided with a left-right pair of steered wheels for which the braking/driving forces can each be controlled, and a steering force generation device that generates steering force for the steered wheels and controls the steering angle of the steered wheels, this vehicle control device and method control the steering force and the steering reaction force from the steering force generation device by controlling the braking/driving force of each of the steered wheels on the basis of the lateral force acting on the steered wheels.Type: ApplicationFiled: March 24, 2017Publication date: February 21, 2019Inventors: Yuki AKIYAMA, Junya TAKAHASHI, Toshiyuki INNAMI
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Publication number: 20190031191Abstract: A cruise control apparatus according to the present invention comprises a curve shape detection unit that detects the shape of a curve, an estimation trajectory calculation means that, on the basis of vehicle speed, calculates an estimated trajectory that satisfies a relationship in which a G-G diagram, which is a relationship between lateral acceleration and longitudinal acceleration, draws an arc, and a steering start point determination unit that determines a steering start point in front of a curve so that the estimated trajectory falls within the curve.Type: ApplicationFiled: January 13, 2017Publication date: January 31, 2019Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Seiichi SATOH, Toshiyuki INNAMI, Junya TAKAHASHI, Yuki AKIYAMA
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Publication number: 20180297594Abstract: Provided are a vehicular motion control device and method such that, even when a vehicle is turning, the target trajectory can be followed while maintaining traveling stability, with a reduced sense of incongruity felt by the driver. This vehicular motion control device is equipped with: a target trajectory acquisition unit that acquires a target trajectory for a vehicle to travel; and a speed control unit that increases or decreases the longitudinal acceleration generated in the vehicle, the longitudinal acceleration being positive in the vehicle travel direction. If the vehicle deviates from the target trajectory during turning, the speed control unit performs longitudinal acceleration control to increase or decrease the longitudinal acceleration.Type: ApplicationFiled: October 11, 2016Publication date: October 18, 2018Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Junya TAKAHASHI, Atsushi YOKOYAMA, Masamichi IMAMURA
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Publication number: 20180162409Abstract: An apparatus and method for controlling a vehicle is proposed. Detection of a traffic light along the trajectory of a cruising vehicle and a determination of current and future traffic light statuses is performed. It is determined whether the vehicle can arrive at the traffic light during a passing status in accordance with an adaptation of the kinematic vehicle state. Signals are provided via a human 10 machine interface corresponding to various kinematic vehicle state adaptation scenarios in order to enable an arrival at the traffic light during a passing status. In response to the respective human machine interface signals, control of the vehicle can be performed accordingly.Type: ApplicationFiled: November 29, 2017Publication date: June 14, 2018Inventors: Heiko ALTMANNSHOFER, Junya TAKAHASHI
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Patent number: 9990332Abstract: A vehicle motion control device includes curve shape acquisition means for acquiring a shape of a curve present in front of a currently traveling vehicle, vehicle position acquisition means for acquiring a position of the vehicle, and vehicle motion control arithmetic means for computing, on the basis of the shape of the curve and the position of the vehicle, a command value relating to longitudinal acceleration to be caused to the vehicle. During a time interval from before the vehicle reaches a near end of the curve, until the vehicle has approached the curve and traveled to a site having a constant or maximum curvature of the curve, the vehicle motion control arithmetic means computes a plurality of different negative longitudinal acceleration command values. Thus, even when there is no lateral motion, the vehicle motion control device accelerates/decelerates the vehicle while improving a driver's feeling of slowdown.Type: GrantFiled: July 19, 2011Date of Patent: June 5, 2018Assignee: Hitachi Automotive Systems, Ltd.Inventors: Junya Takahashi, Makoto Yamakado, Shinjiro Saito
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Patent number: 9919603Abstract: The present invention improves emergency evasion performance. An operation control system for a vehicle that is provided with a risk-potential determining unit that determines the risk potential of a vehicle on the basis of external environment information and/or vehicle information, a friction braking unit that applies friction braking force to the vehicle, and a regenerative braking device that applies regenerative braking force to the vehicle, the operation control system being provided with a control value determining unit that determines a first control value that is for determining the size of the friction braking force and determines a second control value that is for determining the size of the regenerative braking force. The control value determining unit determines at least the first control value on the basis of the risk potential determined by the risk-potential determining unit.Type: GrantFiled: January 28, 2015Date of Patent: March 20, 2018Assignee: Hitachi Automotive Systems, Ltd.Inventors: Makoto Yamakado, Keiichiro Nagatsuka, Junya Takahashi, Mitsuhide Sasaki, Toshiyuki Innami, Mikio Ueyama
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Publication number: 20180051172Abstract: An easily producible electroconductive aromatic polyimide porous film comprising an aromatic polyimide porous film and carbon nanotubes dispersed in the film has a resistance in the thickness direction of 100 m?·cm2 or less and a Gurley air permeation resistance of 300 seconds/100 cc or less and exhibits especially high conductivity and high air permeability as a gas diffusion layer of a membrane-electrode assembly of a fuel cell.Type: ApplicationFiled: March 6, 2015Publication date: February 22, 2018Inventors: Ken KAWAGISHI, Junya TAKAHASHI, Kimio NAKAYAMA, Tatsuya SHOJI
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Publication number: 20180034132Abstract: An electronic device that reduces deterioration of the antenna characteristics of an antenna corresponding to a plurality of communication bands is provided. An electronic device includes an antenna corresponding to a plurality of communication bands, a conductive member, a GND terminal, a first circuit, a second circuit having an impedance lower than that of the first circuit and a switching circuit. The first circuit and the second circuit can each connect the conductive member and the GND terminal. The switching circuit switches a circuit connecting the conductive member and the GND terminal between the first circuit and the second circuit depending on the communication band for use.Type: ApplicationFiled: July 25, 2017Publication date: February 1, 2018Applicant: KYOCERA CorporationInventor: Junya TAKAHASHI
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Patent number: 9617952Abstract: To provide a price-competitive compression ring having excellent thermal conductivity and thermal sag resistance, which can be used in a high-thermal-load environment of high-compression-ratio engines, steel identified by the material number of SUP10 in JIS G 4801, which contains small amounts of alloying elements, is used, and a piston ring wire is annealed before an oil-tempering treatment such that spheroidal cementite having an average particle size of 0.1-1.5 ?m is dispersed in a tempered martensite matrix, thereby suppressing the movement of dislocation and creep even at 300° C., and improving thermal sag resistance.Type: GrantFiled: May 24, 2011Date of Patent: April 11, 2017Assignees: KABUSHIKI KAISHA RIKEN, TOKUSEN KOGYO CO., LTD.Inventors: Yuji Shima, Junya Takahashi, Ryouichi Kamon
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Publication number: 20170088381Abstract: A steel sheet shape control method includes, (A) setting a target correction shape of the steel sheet at a position of an electromagnet to a curved shape, (B) measuring a steel sheet shape when electromagnetic correction is performed, (C) calculating the steel sheet shape in a nozzle position based on the steel sheet shape, (D) repeating (B) and (C) by resetting the target correction shape to a curved shape having a smaller amount of warp, (E) when the amount of warp of the steel sheet shape at the position of the nozzle is less than the upper limit value, (F) calculating vibration of the steel sheet at the position of the nozzle, and (G) adjusting a control gain of the electromagnet until amplitude of vibration is less than a second upper limit value when the amplitude of the vibration is equal to or more than the second upper limit value.Type: ApplicationFiled: December 12, 2016Publication date: March 30, 2017Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Yasushi KURISU, Yoshihiro YAMADA, Futoshi NISHIMURA, Katsuya KOJIMA, Junya TAKAHASHI, Masaaki OMODAKA, Masafumi MATSUMOTO, Hiroyuki TANAKA
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Patent number: 9551056Abstract: A steel sheet shape control method includes, (A) setting a target correction shape of the steel sheet at a position of an electromagnet to a curved shape, (B) measuring a steel sheet shape when electromagnetic correction is performed, (C) calculating the steel sheet shape in a nozzle position based on the steel sheet shape, (D) repeating (B) and (C) by resetting the target correction shape to a curved shape having a smaller amount of warp, (E) when the amount of warp of the steel sheet shape at the position of the nozzle is less than the upper limit value, (F) calculating vibration of the steel sheet at the position of the nozzle, and (G) adjusting a control gain of the electromagnet until amplitude of vibration is less than a second upper limit value when the amplitude of the vibration is equal to or more than the second upper limit value.Type: GrantFiled: May 2, 2013Date of Patent: January 24, 2017Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Yasushi Kurisu, Yoshihiro Yamada, Futoshi Nishimura, Katsuya Kojima, Junya Takahashi, Masaaki Omodaka, Masafumi Matsumoto, Hiroyuki Tanaka
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Publication number: 20160347181Abstract: The present invention improves emergency evasion performance. An operation control system for a vehicle that is provided with a risk-potential determining unit that determines the risk potential of a vehicle on the basis of external environment information and/or vehicle information, a friction braking unit that applies friction braking force to the vehicle, and a regenerative braking device that applies regenerative braking force to the vehicle, the operation control system being provided with a control value determining unit that determines a first control value that is for determining the size of the friction braking force and determines a second control value that is for determining the size of the regenerative braking force. The control value determining unit determines at least the first control value on the basis of the risk potential determined by the risk-potential determining unit.Type: ApplicationFiled: January 28, 2015Publication date: December 1, 2016Inventors: Makoto YAMAKADO, Keiichiro NAGATSUKA, Junya TAKAHASHI, Mitsuhide SASAKI, Toshiyuki INNAMI, Mikio UEYAMA
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Publication number: 20160215882Abstract: A compression ring that makes it possible to suppress adhesion of a piston material to the compression ring is provided. The compression ring includes an annular main body that is constituted of a steel material consisting of 0.45 to 0.55 mass % of C, 0.15 to 0.35 mass % of Si, 0.65 to 0.95 mass % of Mn, 0.80 to 1.10 mass % of Cr, 0.25 mass % or less of V, less than 0.010 mass % of P, and a balance containing Fe and an inevitable impurity.Type: ApplicationFiled: September 19, 2014Publication date: July 28, 2016Applicant: Kabushiki Kaisha RikenInventors: Yuji SHIMA, Junya TAKAHASHI
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Patent number: 9371797Abstract: To provide a high-thermal-conductivity piston ring having excellent scuffing resistance and wear resistance, which can be used in a high-heat-load environment in engines, a TiN coating as thick as 10-60 ?m, in which the texture coefficient of a (220) plane is 1.1-1.8 in X-ray diffraction on the coating surface, larger than those of (111) and (200) planes, is formed under the optimized ion plating conditions on a peripheral surface of the piston ring. Also, to obtain excellent sliding characteristics with low friction without losing excellent thermal conductivity of TiN, a hard amorphous carbon coating is formed on the TiN coating.Type: GrantFiled: June 21, 2012Date of Patent: June 21, 2016Assignee: KABUSHIKI KAISHA RIKENInventors: Takuma Sekiya, Yuuichi Murayama, Masayuki Sato, Yuji Shima, Junya Takahashi, Masaki Moronuki
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Patent number: 9347559Abstract: A high-thermal-conductivity piston ring having excellent scuffing resistance and wear resistance, which can be used in a high-heat-load environment in engines is provided. Also, to provide a piston ring with low friction for contributing to the improvement of fuel efficiency, a TiN coating as thick as 10-60 ?m, in which the texture coefficient of a (111) plane is 1.2-1.65 in X-ray diffraction on the coating surface, with the texture coefficient of a (111) plane>the texture coefficient of a (220) plane>the texture coefficient of a (200) plane, is formed under the optimized ion plating conditions on a peripheral surface of the piston ring. Further, to obtain excellent sliding characteristics with low friction without losing excellent thermal conductivity of TiN, a hard amorphous carbon coating is formed on the TiN coating.Type: GrantFiled: June 21, 2012Date of Patent: May 24, 2016Assignee: KABUSHIKI KAISHA RIKENInventors: Takuma Sekiya, Yuuichi Murayama, Masayuki Sato, Yuji Shima, Junya Takahashi, Masaki Moronuki
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Patent number: 9199639Abstract: Vehicular motion control system comprising controller that independently controls driving force and/or braking force of each of four wheels and a turning direction sensor that senses a turning direction, and with an acceleration/deceleration command generator that generates an acceleration/deceleration command based upon a sensed steering angle and sensed vehicle speed and a driving force/braking force distributor that determines the distribution of driving force or driving torque and/or braking force or braking torque of each wheel, and driving force/braking force distributor determines based upon the acceleration/deceleration command and the turning direction so that more driving force or more driving torque and/or more braking force or more braking torque are/is distributed to the inside front wheel in turning than the outside front wheel in turning and more driving force or more driving torque and/or more braking force or more braking torque are/is distributed to the outside rear wheel.Type: GrantFiled: September 28, 2011Date of Patent: December 1, 2015Assignee: Hitachi Automotive Systems, Ltd.Inventors: Makoto Yamakado, Junya Takahashi, Shinjiro Saito, Toshiya Oosawa
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Patent number: 9090258Abstract: In order to propose a vehicle motion control apparatus providing a good operability for a driver and capable of reducing a pedal operation, motional state information acquiring means configured to acquire longitudinal acceleration, lateral acceleration, and a vehicle speed generated in a vehicle; pedal operating amount acquiring means configured to acquire pedal operation information performed by the driver; and vehicle motion control command calculating means configured to calculate a longitudinal acceleration command value on the basis of information acquired therefrom and output a command value realizing the calculated longitudinal acceleration command value are provided, and the vehicle motion control command calculating means is configured to calculate the longitudinal acceleration command value on the basis of the acquired information so as to generate longitudinal acceleration which provides a longitudinal jerk of a value comparable to a longitudinal jerk on the basis of a pedal opening operation perfoType: GrantFiled: May 11, 2011Date of Patent: July 28, 2015Assignee: Hitachi Automotive Systems, Ltd.Inventors: Junya Takahashi, Makoto Yamakado, Shinjiro Saito
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Patent number: 9043116Abstract: The present invention relates to methods and apparatuses for performing driving assistance for a controlled vehicle, involving determining a first longitudinal acceleration target value on the basis of a lateral acceleration of the controlled vehicle, determining a second longitudinal acceleration target value on the basis of a target speed of the controlled vehicle, determining a third longitudinal acceleration target value based on a minimum value of the first longitudinal acceleration target value and the second longitudinal acceleration target value, and controlling a longitudinal acceleration of the controlled vehicle on the basis of the determined third longitudinal acceleration target value.Type: GrantFiled: January 29, 2014Date of Patent: May 26, 2015Assignee: Hitachi, Ltd.Inventors: Junya Takahashi, Heiko Altmannshofer, Makoto Yamakado, Takao Kojima
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Publication number: 20150094924Abstract: The present invention relates to methods and apparatuses for performing driving assistance for a controlled vehicle, involving determining a longitudinal acceleration target value on the basis of a lateral acceleration of the controlled vehicle and one or more setting parameters, and controlling a longitudinal acceleration of the controlled vehicle on the basis of the calculated longitudinal acceleration target value. According to the invention, a lateral acceleration acting, during cornering, on a proceeding vehicle, which moves in the longitudinal direction on the road ahead of the controlled vehicle, is estimated, and the one or more setting parameters for the calculation of the longitudinal acceleration target value are set based on the estimated lateral acceleration acting on the proceeding vehicle during cornering.Type: ApplicationFiled: January 30, 2014Publication date: April 2, 2015Applicant: Hitachi, Ltd.Inventors: Junya TAKAHASHI, Heiko ALTMANNSHOFER, Makoto YAMAKADO, Atsushi YOKOYAMA
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Publication number: 20150094927Abstract: The present invention relates to methods and apparatuses for performing driving assistance for a controlled vehicle, involving determining a first longitudinal acceleration target value on the basis of a lateral acceleration of the controlled vehicle, determining a second longitudinal acceleration target value on the basis of a target speed of the controlled vehicle, determining a third longitudinal acceleration target value based on a minimum value of the first longitudinal acceleration target value and the second longitudinal acceleration target value, and controlling a longitudinal acceleration of the controlled vehicle on the basis of the determined third longitudinal acceleration target value.Type: ApplicationFiled: January 29, 2014Publication date: April 2, 2015Applicant: Hitachi, Ltd.Inventors: Junya TAKAHASHI, Heiko ALTMANNSHOFER, Makoto YAMAKADO, Takao KOJIMA