Patents by Inventor Yuki Akiyama
Yuki Akiyama 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: 20240151636Abstract: In a biological component measurement device according to the present disclosure, a modulation unit intensity-modulates excitation light emitted from an excitation light source and the intensity-modulated excitation light is incident to an optical medium. The modulation unit switches a plurality of modulation frequencies in order from a low frequency to a high frequency. The plurality of modulation frequencies include a first frequency and a second frequency higher than the first frequency. A light position detector detects a position of probe light when the sample is irradiated with excitation light intensity-modulated at the first frequency and a position of probe light when the sample is irradiated with excitation light intensity-modulated at the second frequency. The biological component acquisition unit measures a biological component of the sample based on the position of the probe light at the first frequency and the position of the probe light at the second frequency.Type: ApplicationFiled: March 23, 2021Publication date: May 9, 2024Applicant: Mitsubishi Electric CorporationInventors: Shusaku HAYASHI, Koichi AKIYAMA, Yuki TSUDA
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Patent number: 11970084Abstract: A vehicle drive device and a control method therefor are provided. The vehicle drive device includes: a power source including a first rotating electrical machine; a second rotating electrical machine; a differential unit including three rotating elements to which a first output shaft, a second output shaft, and the second rotating electrical machine are connected; and an electronic control device. The electronic control device regeneratively controls the first rotating electrical machine and the second rotating electrical machine in such a manner that negative torque is applied to the first output shaft and the second output shaft, when performing regenerative control by the second rotating electrical machine in a drive mode in which torque from the power source is distributed to the first output shaft and the second output shaft by controlling torque of the second rotating electrical machine during deceleration of a vehicle.Type: GrantFiled: February 11, 2022Date of Patent: April 30, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Atsushi Tabata, Koichi Okuda, Koji Takaira, Yuki Makino, Akinori Homan, Yosuke Akiyama, Akira Ijichi, Kunihiko Usui
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Publication number: 20240122503Abstract: A component measurement device for measuring a given component contained in a sample. The component measurement device includes an excitation light source to emit excitation light onto the optical medium portion, a probe light source to emit probe light onto the optical medium portion, an intensity modulation unit to perform intensity modulation on the excitation light emitted by the excitation light source based on stratum corneum information about stratum corneum of the sample to generate intensity-modulated excitation light and emit the generated intensity-modulated excitation light onto the optical medium portion, and a measurement unit to measure the given component based on a difference between the probe light emitted from the optical medium portion in a first state where the excitation light is emitted and the probe light emitted from the optical medium portion in a second state where the intensity-modulated excitation light is emitted.Type: ApplicationFiled: March 3, 2021Publication date: April 18, 2024Applicant: Mitsubishi Electric CorporationInventors: Yuki TSUDA, Shusaku HAYASHI, Koichi AKIYAMA
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Publication number: 20240128754Abstract: A startup method and startup program for microgrid that enable to stably start up the microgrid without producing frequency fluctuation is provided. An embodiment of the present disclosure is a startup method for microgrid configured by a plurality of inverter power supplies independently sharing a load and divided into a master that starts up first and a slave that starts up secondly and later, the startup method comprising: a master initial startup step of initially starting up the master in a CVCF mode; a slave initial startup step of initially starting up the slave in a grid interconnection mode; and a control mode changing step of the master and the slave changing control modes thereof when output fluctuation of the master and the slave becomes a predetermined threshold or less or when the master and the slave or other inverter power supplies become a predetermined operation state while output voltage of said master and said slave becomes a predetermined threshold or less.Type: ApplicationFiled: February 19, 2021Publication date: April 18, 2024Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Yoko SAKAUCHI, Yukina AKIYAMA, Yuki KUDO, Shunsuke KAWACHI, Koji TOBA
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Patent number: 11383698Abstract: Provided are: a device and a method for controlling vehicle movement, with which it is possible to suppress causing uncomfortableness to vehicle occupants and causing unstable behavior during turning by automatic travel control; and a device and a method for generating a target course. In a vehicle capable of automatically controlling lateral acceleration occurring in the vehicle, the present invention controls the acceleration occurring in the vehicle such that jerk, which is the change over time of acceleration, becomes the greatest in a region where the lateral acceleration that occurs upon entering a curve is equal to or less than half the acceleration during normal turning, and the jerk decreases as the acceleration increases.Type: GrantFiled: July 26, 2018Date of Patent: July 12, 2022Assignee: HITACHI ASTEMO, LTD.Inventors: Junya Takahashi, Yuki Akiyama, Kenta Maeda, Naoki Hiraga, Toshiyuki Innami
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Publication number: 20220195200Abstract: A carbon black is disclosed which can exert excellent abrasion resistance while suppressing heat generation when incorporated into a rubber composition. A carbon black in which the total number of active sites represented by a product of a full width at half maximum of a Raman scattering peak appearing in a range of 1340 to 1360 cm?1 when an excitation wavelength is 532 nm and a specific surface area when nitrogen gas is adsorbed is 3.60×104 to 8.20×104 (cm?1·m2/g), and when a nuclear magnetic resonance signal of a spin-spin relaxation process observed by a solid echo method is represented by a sum of a first signal and a second signal having a time constant larger than that of the first signal, an amount of hydrogen represented by a signal intensity per unit mass at time 0 of the first signal is 50.0 to 250.0 (/g).Type: ApplicationFiled: March 26, 2020Publication date: June 23, 2022Applicant: TOKAI CARBON CO., LTD.Inventors: Kengo Kurisu, Takuya Takahashi, Yuki Akiyama
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Patent number: 11117559Abstract: An object of the invention is to realize an M+ control which is suitable to a driving scene without depending on pedal operation information of a driver. A vehicle motion control device according to the invention sets an absolute value of deceleration generated in the vehicle in a period in which the lateral motion of the vehicle is predicted to be changed from a state where the vehicle takes the lateral motion to a state where the vehicle does not take the lateral motion to be smaller than that generated in a period in which the lateral motion of the vehicle is predicted to be changed from a state the vehicle takes one of right and left lateral motions to a state where the vehicle takes the other lateral motion.Type: GrantFiled: August 22, 2017Date of Patent: September 14, 2021Assignee: Hitachi Automotive Systems, Ltd.Inventors: Junya Takahashi, Yuki Akiyama, Masamichi Imamura
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Patent number: 11092967Abstract: The present invention provides a vehicle movement control device which is capable of achieving stable vehicle behavior during the movement of a vehicle in lane changing mode. When calculating a travel path for turning a vehicle to the left side or the right side and then turning the vehicle to the other side, this vehicle movement control device calculates the travel path so that the peak value of the curvature of the travel path decreases in a section where the vehicle speed is higher.Type: GrantFiled: July 31, 2017Date of Patent: August 17, 2021Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yuki Akiyama, Junya Takahashi, Toshiyuki Innami
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Patent number: 10843683Abstract: 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: GrantFiled: March 24, 2017Date of Patent: November 24, 2020Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yuki Akiyama, Junya Takahashi, Toshiyuki Innami
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Patent number: 10745887Abstract: A work machine that can detect abnormality such as a malfunction and wear and tear of each of hydraulic pumps including control equipment with high precision and that can reduce equipment cost is provided. A controller 9 according to the present invention includes a volumetric-transfer-efficiency-calculating section 94 that calculates a volumetric transfer efficiency ?C representing a transfer efficiency of hydraulic oil between a hydraulic cylinder 11 and hydraulic pumps 21 to 23 on the basis of a target discharge flow rate calculated by a target-discharge-flow-rate-calculating section 932 and the speed of the hydraulic cylinder 11 that is detected by a speed sensor 28, and an abnormality decision section 95 that decides whether any one of the hydraulic pumps 21 to 23 is abnormal on the basis of the volumetric transfer efficiency ?C calculated by the volumetric-transfer-efficiency-calculating section 94.Type: GrantFiled: August 29, 2016Date of Patent: August 18, 2020Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.Inventors: Yuki Akiyama, Kenji Hiraku, Hiromasa Takahashi
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Publication number: 20200164870Abstract: Provided are: a device and a method for controlling vehicle movement, with which it is possible to suppress causing uncomfortableness to vehicle occupants and causing unstable behavior during turning by automatic travel control; and a device and a method for generating a target course. In a vehicle capable of automatically controlling lateral acceleration occurring in the vehicle, the present invention controls the acceleration occurring in the vehicle such that jerk, which is the change over time of acceleration, becomes the greatest in a region where the lateral acceleration that occurs upon entering a curve is equal to or less than half the acceleration during normal turning, and the jerk decreases as the acceleration increases.Type: ApplicationFiled: July 26, 2018Publication date: May 28, 2020Applicant: Hitachi Automotive Systems, Ltd.Inventors: Junya TAKAHASHI, Yuki AKIYAMA, Kenta MAEDA, Naoki HIRAGA, Toshiyuki INNAMI
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Patent number: 10654478Abstract: 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: GrantFiled: January 13, 2017Date of Patent: May 19, 2020Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Seiichi Satoh, Toshiyuki Innami, Junya Takahashi, Yuki Akiyama
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Patent number: 10655740Abstract: A work machine includes a closed circuit system in which there is provided a flushing valve.Type: GrantFiled: February 25, 2016Date of Patent: May 19, 2020Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.Inventors: Juri Shimizu, Teppei Saitoh, Kenji Hiraku, Yuki Akiyama, Hiromasa Takahashi
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Publication number: 20200117192Abstract: The present invention provides a travel control device for a vehicle with which it is possible to control the vehicle so that, by appropriately controlling override in accordance with the vehicle behavior upon driver override, the vehicle behavior does not become unstable. This travel control device comprises: a vehicle control plan creation unit that creates a control plan for a vehicle; an operation detail acquisition unit that acquires operation details by a driver to the vehicle; a vehicle control assessment unit that determines vehicle control details on the basis of the control plan and the driver's operation details; a vehicle behavior assessment unit that assesses the behavior of the vehicle; and a vehicle control detail determination unit that determines whether or not to prioritize the driver's operation details over the vehicle control plan on the basis of the behavior of the vehicle as assessed by the vehicle behavior assessment unit.Type: ApplicationFiled: June 4, 2018Publication date: April 16, 2020Inventors: Seiichi SATOH, Toshiyuki INNAMI, Naoki HIRAGA, Junya TAKAHASHI, Yuki AKIYAMA
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Publication number: 20200086885Abstract: According to the present invention, even when information needed to calculate an acceleration command cannot be detected due to a sensor malfunction or the like, acceleration control can be continued by adding, in accordance with outside-world information, a correction to the result of calculating the acceleration command, which uses the result of an estimation made using alternative sensor information.Type: ApplicationFiled: May 30, 2018Publication date: March 19, 2020Inventors: Naoki HIRAGA, Toshiyuki INNAMI, Junya TAKAHASHI, Yuki AKIYAMA, Seiichi SATOH
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Publication number: 20190263368Abstract: An object of the invention is to realize an M+ control which is suitable to a driving scene without depending on pedal operation information of a driver. A vehicle motion control device according to the invention sets an absolute value of deceleration generated in the vehicle in a period in which the lateral motion of the vehicle is predicted to be changed from a state where the vehicle takes the lateral motion to a state where the vehicle does not take the lateral motion to be smaller than that generated in a period in which the lateral motion of the vehicle is predicted to be changed from a state the vehicle takes one of right and left lateral motions to a state where the vehicle takes the other lateral motion.Type: ApplicationFiled: August 22, 2017Publication date: August 29, 2019Inventors: Junya TAKAHASHI, Yuki AKIYAMA, Masamichi IMAMURA
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Patent number: 10378185Abstract: To provide a work machine capable of efficiently regenerating the energy owned by hydraulic fluid during a swing deceleration.Type: GrantFiled: March 10, 2015Date of Patent: August 13, 2019Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Teppei Saitoh, Yuki Akiyama, Kenji Hiraku, Hiromasa Takahashi, Juri Shimizu
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Publication number: 20190196487Abstract: The present invention provides a vehicle movement control device which is capable of achieving stable vehicle behavior during the movement of a vehicle in lane changing mode. When calculating a travel path for turning a vehicle to the left side or the right side and then turning the vehicle to the other side, this vehicle movement control device calculates the travel path so that the peak value of the curvature of the travel path decreases in a section where the vehicle speed is higher.Type: ApplicationFiled: July 31, 2017Publication date: June 27, 2019Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yuki AKIYAMA, Junya TAKAHASHI, Toshiyuki INNAMI
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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