Ntn Corporation

Yazaki Corporation

Koito Manufacturing Company, Ltd.

Yamaha Hatsudoki Kabushiki Kaisha

Ntn-snr Roulements

Hamamatsu Foundation for Science and Technology Promotion

Mitsubishi Electric Corporation

Toru Takahashi

Takayuki Norimatsu

Kentarou Nishikawa

Hiroshi Isobe

Shintarou Ueno

Koichi Okada

Hiroaki Ohba

Takayoshi Ozaki

Masatoshi Mizutani

Yui Masuda

Hisashi Ohtsuki

Eiji Tajima

Pascal Desbiolles

Yujiro Ono

Katsuyuki Ikei

Tomomi Ishikawa

Kiyotake Shibata

Kenichi Iwamoto

Kentaro Ikki

Ayumi Akiyama

Shoji Kawahito

Naoki Tatara

Kazuo Komori

Makoto Yasui

Takashi Koike

Atsushi Sugimoto

Yoshitaka Nagano

Kentaro Nishikawa

Yuji Sugiyama

Yukio Nishio

Kazuhiro Baba

Yosuke Suzuki

Cyril Peterschmitt

Minoru Suzuki

Toru Fukasawa

Akira Torii

Hiroshi Suzuki

Naoki Takii

Nobuo Masaki

Hikaru Watanabe

Yoshinori Ikeda

Shinji Miyazaki

Yasumichi Wakao

Masaki Yamamoto

Tatsuo Nakajima

Hideharu Hayashi

Tatsunori Shimizu

Yoshio Fujikawa

Mitsuji Kubota

Hisashi Sato

Kazunari Kihira

Masahiro Kiuchi

Takuji Harano

Takashi Haseba

Hiroyuki Hakamata

Takayuki Oda

Akio Nakajima

Koji Kametaka

Naoki Manabe

Ikuo Uemoto

Norihito Tabata

Hitoshi Tanaka

Tomohisa Kaneko

Wataru Hatakeyama

Takafumi Iwama

Kazuhiro Hara

Kazuki Sano

Shinsaku Soda

Ryuhei Takahashi

Yusuke Kitsukawa

An outboard motor includes an engine main body, and an intake device to supply air to the engine main body. The intake device includes a main intake pipe including a first intake pipe and a second intake pipe connected to a downstream end of the first intake pipe and extending at an angle with respect to an axial direction of the first intake pipe and through which the air supplied to the engine main body flows, and an extension pipe extending from a connection between the first intake pipe and the second intake pipe and including a resonance chamber therein. The extension pipe includes an extended peripheral wall and an end wall that closes the resonance chamber except for a portion adjacent to the main intake pipe.

Boat propulsion device

A condition monitoring system includes a vibration sensor for measuring a vibration waveform of a bearing in a wind turbine generation apparatus and a data processor for diagnosing abnormality of the bearing. In the data processor, an evaluation value computing unit time-sequentially computes an evaluation value that characterizes an effective value of vibration waveform data output from the vibration sensor within a certain time. A diagnosis unit diagnoses abnormality of the bearing based on transition of temporal change of the evaluation value. The evaluation value computing unit computes the minimum value of the effective values of vibration waveform data within a certain time, as the evaluation value.

Condition monitoring system and wind turbine generation apparatus

Problem: To clearly indicate an autonomous driving state and a charge level of a battery of a vehicle with a single lamp. Solution: A vehicle headlamp () includes a communication lamp () for indicating an autonomous driving state of a vehicle while the vehicle is driving, and a lamp ECU () for performing control to cause the communication lamp () to indicate a charge level of a battery () while the vehicle is stationary. The lamp () includes an elongated light guide body that continuously extends along a straight line or a curve and a plurality of light emitting devices () arranged at an interval in a longitudinal direction of the light guide body. The lamp ECU () controls the output of light from each of the light emitting devices () to change an illuminated range of the light guide body according to the charge level of the battery ().

Vehicle lamp system for indicating autonomous driving and charge level of battery

A first vibration sensor measures vibration of a bearing. A second vibration sensor for measuring background noise received by the first vibration sensor is installed so as not to receive vibration of the bearing. A data acquisition device receives a first signal that is a measurement signal of the first vibration sensor and a second signal that is a measurement signal of the second vibration sensor and outputs a third signal obtained by subtracting the second signal from the first signal as data indicating vibration of the bearing.

Condition monitoring system and wind turbine including the same

A condition monitoring apparatus which monitors a condition of equipment including a rotor includes a storage and a calculator. The storage stores a plurality of results obtained from a plurality of divided data strings, respectively, resulting from division of a data string obtained by sampling at a regular time interval of signals from sensors provided in the equipment. The calculator estimates a plurality of rotation speeds corresponding to the plurality of divided data strings from the plurality of results accumulated in the storage, respectively, corrects the plurality of divided data strings based on the plurality of rotation speeds, respectively, and generates a corrected data string by combining the plurality of corrected divided data strings. A condition monitoring apparatus capable of accurately analyzing data obtained from the sensors while increase in cost is suppressed and influence by variation in rotation is lessened is thus provided.

Condition monitoring device

An electric linear motion actuator includes a linear motion mechanism for converting the rotation of a rotary shaft to a linear motion of an outer ring member. The electric linear motion actuator further includes a reaction force receiving member adapted to receive an axially rearward reaction force, and a stationary member provided axially rearward of the reaction force receiving member. A magnetic pole row is mounted to the reaction force receiving member, while the magnetic sensor is mounted to the stationary member.

Electric linear motion actuator

A magnetizing device includes a magnetization yoke including a pair of magnetization heads confronting each other through a magnetic gap, an excitation coil wound around the magnetization yoke, and a magnetization power supply that supplies a magnetizing current to the excitation coil to generate magnetic flux between the magnetization heads. A magnetic shield is provided on the magnetization yoke. The magnetic shield is spaced apart from one of the magnetization heads with a gap being formed therebetween along a direction in which the plurality of magnetic encoder tracks are arranged. The magnetic shield blocks a flow of magnetic flux that is present outside a defined extension of a flow of the magnetic flux between the pair of magnetization heads. The magnetic shield is of such a geometry that a thickness thereof progressively decreases towards the one of the magnetization heads.

Magnetizing device for magnetic encoder

A wear amount detection device to detect that a tire is in a worn state, during running, without a special sensor. The device includes a rotation sensor detecting rotation of a wheel to measure a speed of an automobile; a signal processing extracting rotation speed fluctuations synchronized with rotation, from a rotation signal detected by the rotation sensor, and obtain a rotation speed fluctuation pattern synchronized with rotation, from rotation speed fluctuations over a plurality of rotations; and a wear state determination configured to obtain, from the obtained pattern, a value of a component induced by a characteristic embodied in a tire of the wheel, the value varying in accordance with a wear state of the tire, to estimate a wear state of the tire, and to output the state.

Wear amount detection device for automobile tires

Provided is a sensor-equipped wheel support bearing assembly for rotatably supporting a wheel, including a sensor unit associated with one of outer and inner members that serve as a stationary member. The sensor unit includes a strain generator member that has at least three fixation contact segments fixedly in contact with the stationary member and at least two strain sensors mounted on the strain generator member. A first load estimator is provided to estimate load acting on the bearing assembly, using an average value of output signals of the sensors. A second load estimator is provided to estimate load acting on the bearing assembly, using the average value and an amplitude value of output signals of the sensors. An estimated load provider is provided to sum these outputs from the load estimators in a ratio that depends on wheel rotation speed, for outputting an estimated load.

Wheel bearing with sensor

A magnetic encoder device () of the present invention includes a base portion () having a mounting surface () for mounting to a rotary shaft (), a cored bar () fitted and fixed over the base portion (), and a double-row magnetic encoder track () formed on the cored bar (). Through movement of each of magnetic poles of the magnetic encoder track () over a region opposed to a magnetic sensor (), an angle of the rotating rotary shaft is detected. The base portion () is formed of a sintered metal, and the mounting surface () is subjected to sizing.

Magnetic encoder device and rotation detection device

A magnetic load sensor unit () is provided which can detect the magnitude of an axial load applied by a linear motion actuator () to a friction pad (). The magnetic load sensor unit () includes a magnetic target () which generates a magnetic field, and a magnetic sensor () designed to move relative to the magnetic target () corresponding to the axial load.

Magnetic load sensor for use in a linear motion actuator, and a linear motion actuator

The rotation detection device includes: an encoder having to-be-detected patterns cyclically arranged in the circumferential direction; and a sensor configured to detect the to-be-detected patterns to generate pulses. The device further includes a reference pattern storage unit, a phase difference detection unit, and an error correction unit. The reference pattern storage unit measures pitch errors in the to-be-detected patterns prior to operation and stores the pitch errors as a reference pattern Pref. The phase difference detection unit determines a pitch error pattern Pm corresponding to one rotation of the to-be-detected patterns from rotation signals representing a plurality of rotations detected during operation, and performs comparison with a reference pattern Pref to determine a relative phase difference &#x3c6;. Based on the phase difference &#x3c6; obtained by the phase difference detection unit, the error correction unit corrects errors included in the rotation signals detected by the sensor.

Rotation detection device and bearing unit equipped with rotation detection device

In a magnetization device, while an annular magnetic body including plural rows of annular un-magnetized magnetic encoder tracks which are arranged adjacent to each other and integrated therewith is rotated, magnetization is performed, thereby providing a magnetic encoder. The magnetization device includes: a magnetizing yoke including a pair of opposed end portions opposed to each other across a magnetic gap; an exciting coil wound on the magnetizing yoke; a magnetization power source supplying a magnetizing current to the exciting coil to pass magnetic flux between the opposed end portions; and a magnetic shield which is provided to the magnetizing yoke and shields flow of the magnetic flux to the rows of magnetic encoder tracks other than a magnetization target.

Magnetization device for magnetic encoder

A vehicle-wheel bearing device with a sensor of the present invention includes a plurality of sensors, mounted to a vehicle-wheel bearing, for detecting load thereon, and signal processor for processing an output signal therefrom to generate a signal vector, and load calculator for calculating load acting on a wheel based on the signal vector. The load calculator includes: a coefficient conversion processing unit for calculating an actual-state load estimation coefficient MC that is a load estimation coefficient for a state where the bearing is mounted to an actual vehicle, based on a standard load estimation coefficient MB that is a determined standard load estimation coefficient for the bearing; and a load calculation unit for calculating load on the wheel based on the signal vector and the actual-state load estimation coefficient MC calculated by the coefficient conversion processing unit.

Vehicle-wheel bearing device with sensor

A sensor equipped wheel support bearing assembly, in which a continuous estimated load can be obtained depending on various inputted load conditions is provided. The sensor equipped wheel support bearing assembly includes a sensor unit provided in a stationary member, and a load estimating unit. The load estimating unit includes a load estimation calculating section for calculating the load using an estimation calculating equation, an evaluation value calculation section for calculating an evaluation value, which provides a parameter switching index in the estimation calculating equation, from sensor output signals, and a parameter switching section for switching the parameter based on a comparison result of the evaluation value with a threshold value. The load estimation calculating section includes a calculation correcting block for correcting the calculation result on both sides of the threshold value within a predetermined evaluation value region containing the threshold value.

Growing community of inventors

Iwata, Japan

Toru Takahashi