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: 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
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Patent number: 8989981Abstract: There is provided a vehicle drive control system that feels less unnatural and that enables an improvement in safety performance. A vehicle motion control system capable of independently controlling a driving force and a braking force of four wheels comprises: a first mode (G-Vectoring control) in which substantially the same driving force and braking force are generated with respect to left and right wheels among the four wheels based on a longitudinal acceleration/deceleration control command that is coordinated with the vehicle's lateral motion; and a second mode (sideslip prevention control) in which different driving forces and braking forces are generated with respect to the left and right wheels among the four wheels based on a target yaw moment derived from the vehicle's sideslip information, wherein the first mode is selected when the target yaw moment is equal to or less than a pre-defined threshold, and the second mode is selected when the target yaw moment is greater than the threshold.Type: GrantFiled: April 9, 2014Date of Patent: March 24, 2015Assignee: Hitachi Automotive Systems, Ltd.Inventors: Makoto Yamakado, Shinjiro Saito, Atsushi Yokoyama, Junya Takahashi, Tatsuya Yoshida
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Patent number: 8983748Abstract: A vehicle dynamics control device includes a control unit that executes braking/driving torque control based upon vehicle information that includes operation input information and vehicle dynamics information. The operation input information includes a lateral motion operation index pertaining to a lateral motion operation executed to generate a lateral motion in the vehicle; the vehicle dynamics information includes a longitudinal acceleration generated in the vehicle and a lateral motion index indicating a lateral motion occurring in the vehicle; and the control unit determines a handling assurance acceleration limit with a maximum longitudinal acceleration value that assumes a substantially linear proportional relationship with the lateral motion operation index and the lateral motion index over a range in which the lateral motion operation index assumes a value equal to or less than a predetermined value or the lateral motion index assumes a value equal to or less than a predetermined value.Type: GrantFiled: March 18, 2014Date of Patent: March 17, 2015Assignee: Hitachi, Ltd.Inventors: Junya Takahashi, Makoto Yamakado, Atsushi Yokoyama, Shinjiro Saito
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Patent number: 8977464Abstract: 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: GrantFiled: January 30, 2014Date of Patent: March 10, 2015Assignee: Hitachi, Ltd.Inventors: Junya Takahashi, Heiko Altmannshofer, Makoto Yamakado, Atsushi Yokoyama
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Publication number: 20140222309Abstract: There is provided a vehicle drive control system that feels less unnatural and that enables an improvement in safety performance. A vehicle motion control system capable of independently controlling a driving force and a braking force of four wheels comprises: a first mode (G-Vectoring control) in which substantially the same driving force and braking force are generated with respect to left and right wheels among the four wheels based on a longitudinal acceleration/deceleration control command that is coordinated with the vehicle's lateral motion; and a second mode (sideslip prevention control) in which different driving forces and braking forces are generated with respect to the left and right wheels among the four wheels based on a target yaw moment derived from the vehicle's sideslip information, wherein the first mode is selected when the target yaw moment is equal to or less than a pre-defined threshold, and the second mode is selected when the target yaw moment is greater than the threshold (FIG. 11).Type: ApplicationFiled: April 9, 2014Publication date: August 7, 2014Applicant: Hitachi Automotive Systems, Ltd.Inventors: Makoto YAMAKADO, Shinjiro SAITO, Atsushi YOKOYAMA, Junya TAKAHASHI, Tatsuya YOSHIDA
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Publication number: 20140211361Abstract: 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: May 2, 2013Publication date: July 31, 2014Applicant: 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: 20140200787Abstract: A vehicle dynamics control device includes a control unit that executes braking/driving torque control based upon vehicle information that includes operation input information and vehicle dynamics information. The operation input information includes a lateral motion operation index pertaining to a lateral motion operation executed to generate a lateral motion in the vehicle; the vehicle dynamics information includes a longitudinal acceleration generated in the vehicle and a lateral motion index indicating a lateral motion occurring in the vehicle; and the control unit determines a handling assurance acceleration limit with a maximum longitudinal acceleration value that assumes a substantially linear proportional relationship with the lateral motion operation index and the lateral motion index over a range in which the lateral motion operation index assumes a value equal to or less than a predetermined value or the lateral motion index assumes a value equal to or less than a predetermined value.Type: ApplicationFiled: March 18, 2014Publication date: July 17, 2014Applicant: Hitachi, Ltd.Inventors: Junya TAKAHASHI, Makoto YAMAKADO, Atsushi YOKOYAMA, Shinjiro SAITO
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Publication number: 20140180554Abstract: 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: ApplicationFiled: May 11, 2011Publication date: June 26, 2014Inventors: Junya Takahashi, Makoto Yamakado, Shinjiro Saito
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Publication number: 20140145498Abstract: 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: ApplicationFiled: September 28, 2011Publication date: May 29, 2014Inventors: Makoto Yamakado, Junya Takahashi, Shinjiro Saito, Toshiya Oosawa
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Publication number: 20140137733Abstract: 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: ApplicationFiled: June 21, 2012Publication date: May 22, 2014Applicant: KABUSHIKI KAISHA RIKENInventors: Takuma Sekiya, Yuuichi Murayama, Masayuki Sato, Yuji Shima, Junya Takahashi, Masaki Moronuki
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Publication number: 20140125013Abstract: 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: ApplicationFiled: June 21, 2012Publication date: May 8, 2014Applicant: KABUSHIKI KAISHA RIKENInventors: Takuma Sekiya, Yuuichi Murayama, Masayuki Sato, Yuji Shima, Junya Takahashi, Masaki Moronuki
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Patent number: 8524729Abstract: The present invention relates to a cinnamoyl compound represented by the formula (I):Type: GrantFiled: September 16, 2004Date of Patent: September 3, 2013Assignee: Sumitomo Chemical Company, LimitedInventors: Yoshitaka Tomigahara, Kiyoshi Higashi, Junya Takahashi
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Publication number: 20130131947Abstract: 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: ApplicationFiled: July 19, 2011Publication date: May 23, 2013Applicant: Hitachi Automotive Systems, Ltd.Inventors: Junya Takahashi, Makoto Yamakado, Shinjiro Saito
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Patent number: 8433493Abstract: There is provided a vehicle motion control system which carries out acceleration and deceleration of a vehicle which satisfies driving feeling of a driver even in the state where a lateral motion of the vehicle is not involved. The vehicle motion control system includes a curve shape acquisition section 2 for acquiring a curve shape ahead of an own vehicle, an own vehicle position acquisition section 3 for acquiring a position of the own vehicle, and a vehicle motion control calculation section 4 for calculating a command value of a longitudinal acceleration generated for the vehicle based on the curve shape and the position of the own vehicle. The vehicle motion control calculation section 4 calculates a plurality of negative longitudinal acceleration command values during travel of the own vehicle from before a curve to a point where a curve curvature becomes constant or maximum after the vehicle enters into the curve.Type: GrantFiled: June 28, 2012Date of Patent: April 30, 2013Assignee: Hitachi Automotive Systems, Ltd.Inventors: Junya Takahashi, Makoto Yamakado, Toshiya Oosawa
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Publication number: 20130062835Abstract: 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: ApplicationFiled: May 24, 2011Publication date: March 14, 2013Applicant: KABUSHIKI KAISHA RIKENInventors: Yuji Shima, Junya Takahashi
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Publication number: 20130038822Abstract: Disclosed are polyamide microparticles, a manufacturing method therefor, an optical film, and a liquid crystal display device using the polyamide microparticles, whereby polarized light can be efficiently converted to non-polarized light that is close to natural light, without accompanying a change in color, and light from a light source can be evenly diffused. The disclosed polyamide microparticles are characterized by including a spherocrystal structure and exhibiting a crystallite size of at least 12 nm, as measured by wide-angle X ray diffraction, and a crystallinity of at least 50%, as measured by DSC. The disclosed optical film is characterized by having a resin layer that contains the aforementioned polyamide microparticles.Type: ApplicationFiled: April 19, 2011Publication date: February 14, 2013Applicant: UBE INDUSTRIES, LTD.Inventors: Hajime Aono, Kimio Nakayama, Junya Takahashi, Ryo Sakimoto, Tatsuya Shoji
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Publication number: 20120277965Abstract: There is provided a vehicle motion control system which carries out acceleration and deceleration of a vehicle which satisfies driving feeling of a driver even in the state where a lateral motion of the vehicle is not involved. The vehicle motion control system includes a curve shape acquisition section 2 for acquiring a curve shape ahead of an own vehicle, an own vehicle position acquisition section 3 for acquiring a position of the own vehicle, and a vehicle motion control calculation section 4 for calculating a command value of a longitudinal acceleration generated for the vehicle based on the curve shape and the position of the own vehicle. The vehicle motion control calculation section 4 calculates a plurality of negative longitudinal acceleration command values during travel of the own vehicle from before a curve to a point where a curve curvature becomes constant or maximum after the vehicle enters into the curve.Type: ApplicationFiled: June 28, 2012Publication date: November 1, 2012Applicant: Hitachi Automotive Systems, Ltd.Inventors: Junya TAKAHASHI, Makoto Yamakado, Toshiya Oosawa
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Publication number: 20120209489Abstract: There is provided a vehicle motion control device that defines a pre-curve entry deceleration amount taking the deceleration amount that occurs while traveling a curve into consideration. A vehicle motion control device 6 comprises: a lateral motion-coordinated acceleration/deceleration calculation means 11 that calculates lateral motion-coordinated acceleration/deceleration Gx_dGy, which is the longitudinal acceleration/deceleration of a vehicle 0 that is coordinated with lateral motion, in accordance with lateral jerk Gy_max that acts on the vehicle 0 at curve entry; and a vehicle speed control device 12, which calculates pre-curve entry deceleration Gx_preC that is to be generated with respect to the vehicle 0 before entering the curve, taking lateral motion-coordinated acceleration/deceleration Gx_dGy calculated by the lateral motion-coordinated acceleration/deceleration calculation device 11 into consideration.Type: ApplicationFiled: August 10, 2010Publication date: August 16, 2012Applicant: Hitachi Automotive Systems, Ltd.Inventors: Shinjiro Saito, Junya Takahashi, Atsushi Yokoyama, Makoto Yamakado
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Publication number: 20120179349Abstract: There is provided a vehicle drive control system that feels less unnatural and that enables an improvement in safety performance. A vehicle motion control system capable of independently controlling a driving force and a braking force of four wheels comprises: a first mode (G-Vectoring control) in which substantially the same driving force and braking force are generated with respect to left and right wheels among the four wheels based on a longitudinal acceleration/deceleration control command that is coordinated with the vehicle's lateral motion; and a second mode (sideslip prevention control) in which different driving forces and braking forces are generated with respect to the left and right wheels among the four wheels based on a target yaw moment derived from the vehicle's sideslip information, wherein the first mode is selected when the target yaw moment is equal to or less than a pre-defined threshold, and the second mode is selected when the target yaw moment is greater than the threshold (FIG. 11).Type: ApplicationFiled: August 2, 2010Publication date: July 12, 2012Applicant: Hitachi Automotive Systems, Ltd.Inventors: Makoto Yamakado, Shinjiro Saito, Atsushi Yokoyama, Junya Takahashi, Tatsuya Yoshida