The University of Tokyo

Toyota Jidosha Kabushiki Kaisha

Kayaba Industry Company, Ltd.

The Foundation for the Promotion of Industrial Science

Other

Bridgestone Corporation

Nippon Steel Corporation

Nippon Steel Sumitomo Metal Corporation

Kabushiki Kaisha Kobe Seiko Sho

Equos Research Co., Ltd.

Akebono Brake Industry Co., Ltd.

West Japan Railway Company

Yoshihiro Suda

Takahiro Suzuki

Daisuke Yamaguchi

Osamu Fujimoto

Takuhiro Kondo

Kei Matsui

Teiji Mabuchi

Yoichi Sato

Masaaki Mizuno

Hideki Yamagata

Masuhisa Tanimoto

Yoshihiko Tabuchi

Shoichiro Takehara

Takaaki Koga

Yoshihiro Oe

Hironobu Sugimoto

Hiroyuki Sugiyama

Akira Mizuno

Naoki Sugano

Shojiro Takeuchi

Hiroaki Sekiyama

Takashi Kunimi

Yoshiyuki Shimokawa

Kenichi Horiguchi

Hirofumi Inoue

Etsujiro Imanishi

Takao Nanjo

Koichi Honke

Keizo Araki

Toshiyuki Namba

Keisuke Okamoto

Akira Tsutsui

Satomi Yoshioka

Takuya Saito

Kotaro Yamada

Shiro Kumano

Nobuo Masaki

Hiroki Arakawa

Makoto Itou

Jun Kurihara

Hiroshi Obayashi

Kouji Hio

Minoru Mashiko

Masaya Sakamoto

Kenji Kouno

Manabu Kotani

Jeffrey Too Chuan Tan

Kensuke Kimoto

Kiyoaki Takiguchi

Shigeyuki Yamabe

Tatsuo Hayashi

Shihpin Lin

Masahiko Aki

Koichi Ohtani

Yoshifumi Komura

Atsushi Iwamoto

Takayuki Hirasawa

Shuguang Li

Kensuke Nagasawa

Tatsuro Hayashi

Wenjun Wang

Takashi Sakai

Takayoshi Yamashita

Masato Morikawa

Wen-Jun Wang

Fumio Tanaka

Chieh-Jen Hung

Yohei Michitsuji

Takuhiro Kayaba Industry Co Ltd Kondou

Taro c/o Kayaba Industry Co Ltd Matsumae

Takuhiro c/o Kayaba Industry Co Ltd Kondo

Tetsuya Kawanabe

Kazuhiro Kobayashi

Hidemi Yano

Shinichirou Koga

Atsushi Tanimoto

Yoshinori Kodama

Satomi Okubo

A vehicle is configured to travel, when a vehicle velocity is within a velocity range from not less than a first velocity of at least zero to not more than a second velocity larger than the first velocity, in a mode in which a vehicle body is leaned by a lean mechanism according to an input into an operation input unit, and a wheel angle of a turn wheel changes following a lean of the vehicle body. A natural frequency of roll oscillation of the vehicle body is either within a range of smaller than a reference frequency or within a range of larger than the reference frequency, the reference frequency being a frequency at which oscillation of the wheel angle of the turn wheel has phase delay of 90 degrees relative to the roll oscillation of the vehicle body in its width direction.

Vehicle

A railway vehicle condition monitoring apparatus includes a detection device for detecting vehicle information represented by a wheel load or the like of a wheel included in a railway vehicle running on a railroad track, and a determination device including a classifier to which the vehicle information detected by the detection device is input and which outputs a vehicle condition such as the presence or absence of an abnormality of the railway vehicle. The classifier is generated by means of machine learning that uses training data of a railway vehicle of which the vehicle condition is known, the training data being the vehicle information and the vehicle condition which is known, the machine learning being performed so that when the vehicle information of the training data is input to the classifier, the classifier outputs the vehicle condition of the training data.

Railway vehicle condition monitoring apparatus

A charge potential distributed over a vehicle body resulting from the contact, separation, and friction between a tire and a road surface is detected by a detecting unit provided with a sensing electrode that is disposed on the external surface of the vehicle body, a reference electrode that is disposed apart from the external surface of the vehicle body with a space therebetween, and a sensor amplifier that senses a potential between the sensing electrode and the reference electrode as a signal and amplifies the signal. And the amplitude of the charge potential detected by the detecting unit is monitored by a data processing unit, thereby making it possible to accurately identify not only the state of the road surface but also an internal pressure state of the tire, a wear state of the tire, and the like during vehicular travel.

Measuring method and measuring apparatus to detect charge potential between tire and road surface

A vehicle abnormality detecting apparatusincludes wheel load sensorsthat are attached to right and left rails R constituting a track to measure wheel loads of wheelsprovided in a vehicle; and a calculation unitthat is connected to the wheel load sensors. An index represented by wheel loads of a pair or more of right and left wheelsprovided in at least one of bogiesand defined according to a type of vehicle abnormality as an index for detecting the vehicle abnormality is previously stored in the calculation unit. The calculation unitcalculates a value of the stored index from the wheel loads measured by the wheel load sensorsand transmitted from the wheel load sensors, and detects the abnormality of a running vehicle based on the calculated value of the index.

Method and apparatus for detecting abnormality of vehicle

The invention provides a vehicle data analysis method that enables quantitative analysis of characteristics of vehicle data indicating transition in a driver's driving operation, and a vehicle data analysis system using this analysis method. A plurality of vehicle data are collected based a plurality of types of driving operations. Based on an evaluation criterion as an index for evaluating levels of the driving operations, the collected vehicle data are grouped into at least two groups. Characteristic values of the vehicle data differing between these groups are extracted.

Vehicle data analysis method and vehicle data analysis system

The present invention controls rolling motion of a vehicle by eliminating the detrimental influence of gyro moment on the motion of the vehicle and actively using gyro moment generated by a flywheel constituting an energy storing device. The invention relates to an attitude control device for a vehicle mounted with a flywheel as an energy storage device, the flywheel being pivotally supported about first and second axes mutually orthogonal with each other, the flywheel being mounted on a body of the vehicle such that the first axis extends in a front-rear direction of the body, the attitude control device comprising locking means for locking movement of the flywheel about the first axis, wherein a rolling motion of the vehicle is controlled by locking the movement of the flywheel about the first axis using said locking means.

Attitude control device

An inattentive state determination device includes an observed amount acquiring means for acquiring information on the driver's line of sight and at least one of either information on driving operations or information on the traveling state as an observed amount; and an inattentive state determining means for determining the inattentive state of the driver based on the stochastic relationship between the inattentive state and the observed amount as well as the observed amount acquired by using the observed amount acquiring means. In addition, the inattentive state determining means calculates the probability that the driver is driving inattentively and determines that the driver is driving inattentively when the calculated probability exceeds a threshold.

Inattentive state determination device and method of determining inattentive state

With a vehicle seat arranging structure, a second-row passenger-side seat may be placed in a rearward slide position by sliding the second-row passenger-side seat toward the rear of a vehicle by 150 millimeters so that the second-row passenger-side seat is closer to the rear of the vehicle than the second-row driver-side seat. In addition, each of the second-row driver-side seat and the second-row passenger-side seat may be placed in an obliquely-inward frontward-oriented position by swiveling each of the second-row driver-side seat and the second-row passenger-side seat from the frontward-oriented position 10 degrees inward in the vehicle-width direction. In this way, the sense of distance between the occupants seated in the second-row driver-side seat and the second-row passenger-side seat is reduced. As a result, it is possible to promote communication between these occupants (to make it easier for these occupants to communicate with each other).

Vehicle seat arranging structure

In a system including four electromagnetic absorbers for respective four vehicle wheels, motor coils of two respective electromagnetic absorbers disposed corresponding to two diagonally located wheels are connected forming a closed loop including the coils. A generated damping force magnitude can be made different between an instance directions of respective movements of the diagonally located two wheels with respect to the vehicle body are the same, and an instance the directions are opposite each other. Each electromagnetic absorber includes a resistor cooperating with the corresponding coil forming a closed loop, and selectively establishes: a connected state in which one of the four coils and any of the other three coils are connected to form a closed loop; and a non-connected state in which the one of the four coils is not connected to any other coil. An appropriate vibration suppressing action is exhibited with respect to a coupled motion.

Suspension system for vehicle

A vehicle seat apparatus includes: a vehicle seat; a swiveling drive unit that swivels the vehicle seat between the frontward-oriented position in which the vehicle seat faces the front of a vehicle and at least one of the outward-oriented position in which the vehicle seat is oriented in the outward direction of the vehicle and the inward-oriented position in which the vehicle seat is oriented in the inward direction of the vehicle; a traveling route information obtainment unit that obtains information on a traveling route along which the vehicle travels; and a control unit that controls the operation of the swiveling drive unit based on the information obtained by the traveling route information obtainment unit.

Vehicle seat apparatus

A vehicle seat apparatus includes a vehicle seat; a swiveling drive unit that swivels the vehicle seat between a frontward-oriented position in which the vehicle seat faces the front of a vehicle and at least one of an outward-oriented position in which the vehicle seat is oriented in the outward direction of the vehicle and an inward-oriented position in which the vehicle seat is oriented in the inward direction of the vehicle; an occupant condition detection unit that detects the condition of an occupant in the vehicle; and a control unit that controls the swiveling drive unit based on the detection result obtained by the occupant condition detection unit. With this configuration, it is possible to further increase the comfort of a passenger compartment based on the condition of the occupants in the vehicle.

An electromagnetic damper control device including a first member containing a magnet, and a second member containing a solenoid combined to permit relative rotation. The relative rotation of the first and second members induces an electromagnetic force in a solenoid that serves as a damping force to a motion. The device further comprises a current limiter device operated by a voltage generated in the solenoid due to the relative rotation of the first member and second member. The current limiter devices regulates the electrical current flowing in the solenoid to a specific value based on the voltage generated in the solenoid so that by regulating the damping force of the electromagnetic damper a desired damping force can be applied to the electromagnetic damper without requiring external electrical power.

Electromagnetic damper control device

A tire HIL simulator is provided which is capable of, in a testing apparatus where a vehicle model is incorporated into a tire testing apparatus, reproducing the behavior of a tire which corresponds to the three-dimensional behavior of a vehicle, even if a three-dimensional vehicle model is used. As a device for resolving this, this tire HIL simulator includes a tire testing apparatusand a controllerconnected mutually. The tire testing apparatusconducts a running test on a tireusing a mimic road surface body, and includes a side force measuring devicefor measuring a tire side force and each actuator which gives a contact load, a side-slip angle and a camber angle, respectively. The controllersets a steering angle and a tire side force from the side force measuring deviceas an input value and calculates the three-dimensional motion of a vehicle using a vehicle model, and based on this calculation result, outputs each command value for the contact load, the side-slip angle and the camber angle to each actuator of the tire testing apparatus

Tire HIL simulator

An electromagnetic shock absorber according to the present invention has a shock absorber bodywhich makes telescopic motion in response to an input from outside. The shock absorber bodycomprises a ball screw mechanism, which converts the telescopic motion into rotary motion and is composed of a ball nutand a screw shaft, and power transmitting sectionsandhaving elastic bodies which transmit the rotary motion of the ball screw mechanismto a rotary shaftof a motorwhile shifting a transmission phase when transmission torque of the rotary motion is changed. The motorgenerates electromagnetic resistance to oppose against rotations which input into the rotary shaft. Thus, vibration or the like which inputs into the shock absorber bodyfrom outside is damped by the electromagnetic resistance of the motor. Due to the power transmitting sectionsandwhich delay a rotary phase, moment of inertia of a rotor of the motoris eased when a shocking load inputs into the shock absorber body. Therefore, it is possible to make a vehicle more comfortable to drive when the electromagnetic shock absorber is applied as a shock absorber of the vehicle.

Electromagnetic shock absorber

Growing community of inventors

Tokyo, Japan

Yoshihiro Suda