公开(公告)号：US10975849B2

公开(公告)日：2021-04-13

申请号：US16087508

申请日：2017-03-15

申请人： NTN CORPORATION

发明人： Yosuke Suzuki ,  Toru Takahashi

IPC分类号： F03D17/00 ,  G01H1/00 ,  G01H17/00 ,  G01M13/045 ,  F03D80/70

摘要： 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.

公开(公告)号：US20160138942A1

公开(公告)日：2016-05-19

申请号：US15001856

申请日：2016-01-20

申请人： NTN CORPORATION

发明人： Toru Takahashi ,  Kentaro Nishikawa

IPC分类号： G01D5/244 ,  G01D5/249

CPC分类号： G01D5/2449 ,  G01D5/145 ,  G01D5/2448 ,  G01D5/249

摘要： 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 φ. Based on the phase difference φ obtained by the phase difference detection unit, the error correction unit corrects errors included in the rotation signals detected by the sensor.

摘要翻译： 旋转检测装置包括：编码器，沿圆周方向循环地布置有要被检测的图案; 以及被配置为检测待检测图案以产生脉冲的传感器。 该装置还包括参考图案存储单元，相位差检测单元和纠错单元。 参考图案存储单元测量操作之前的待检测图案中的音调误差，并将音调误差存储为参考图案Pref。 相位差检测单元从表示在操作期间检测到的多个旋转的旋转信号中确定对应于待检测图案的一次旋转的音调误差图案Pm，并且与参考图案Pref进行比较以确定相对相位差＆phgr ;。 基于相位差 由所述相位差检测单元获得，所述误差校正单元校正由所述传感器检测到的旋转信号中包括的误差。

公开(公告)号：US10605319B2

公开(公告)日：2020-03-31

申请号：US15271604

申请日：2016-09-21

申请人： NTN CORPORATION

发明人： Toru Takahashi ,  Yui Masuda

IPC分类号： F16D65/18 ,  H02K7/116 ,  H02K7/06 ,  H02K7/08 ,  B60T13/74 ,  G01L5/12 ,  F16D66/00 ,  B60T1/06 ,  F16D121/24 ,  F16D125/36 ,  F16D125/40 ,  F16D125/48 ,  F16D125/50

摘要： 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.

公开(公告)号：US10590915B2

公开(公告)日：2020-03-17

申请号：US15746173

申请日：2016-06-24

申请人： NTN CORPORATION

发明人： Toru Takahashi

IPC分类号： F03D17/00 ,  F03D7/02 ,  F03D80/80 ,  G01C17/02 ,  G01H11/02

摘要： A condition monitoring system for a wind turbine generator includes an orientation sensor installed in a nacelle and configured to detect an orientation of the nacelle and a condition monitoring unit configured to receive an output from the orientation sensor and perform at least any one of recording, analysis, or transmission of a signal. The condition monitoring unit preferably detects, based on the output from the orientation sensor, the movement along the rotation direction of the nacelle associated with a torsional oscillation of the tower. The orientation sensor can also detect slow directional fluctuations that are difficult to detect using an acceleration sensor or the like, and thus, can satisfactorily detect the rotation of the nacelle associated with the torsional oscillation of the tower.

公开(公告)号：US10529477B2

公开(公告)日：2020-01-07

申请号：US15566547

申请日：2016-04-07

申请人： NTN CORPORATION

发明人： Toru Takahashi ,  Shintarou Ueno

IPC分类号： H01F7/20 ,  H01F13/00 ,  H01F27/36

摘要： 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.

公开(公告)号：US09823094B2

公开(公告)日：2017-11-21

申请号：US15001856

申请日：2016-01-20

申请人： NTN CORPORATION

发明人： Toru Takahashi ,  Kentaro Nishikawa

IPC分类号： G01R33/025 ,  G01P3/481 ,  G01D5/244 ,  G01D5/14 ,  G01D5/249

CPC分类号： G01D5/2449 ,  G01D5/145 ,  G01D5/2448 ,  G01D5/249

摘要： 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 φ. Based on the phase difference φ obtained by the phase difference detection unit, the error correction unit corrects errors included in the rotation signals detected by the sensor.

公开(公告)号：US09616708B2

公开(公告)日：2017-04-11

申请号：US14411116

申请日：2013-06-18

申请人： NTN CORPORATION

发明人： Toru Takahashi

IPC分类号： B60B27/00 ,  G01L5/16 ,  F16C41/00 ,  F16C19/52 ,  G01L5/00 ,  F16C19/18

CPC分类号： B60B27/0068 ,  B60B27/0005 ,  F16C19/184 ,  F16C19/522 ,  F16C41/007 ,  F16C2326/02 ,  G01L5/0019 ,  G01L5/16

摘要： 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.

公开(公告)号：US20150260590A1

公开(公告)日：2015-09-17

申请号：US14723891

申请日：2015-05-28

申请人： NTN CORPORATION

发明人： Wataru HATAKEYAMA ,  Toru Takahashi ,  Kentarou Nishikawa

IPC分类号： G01L5/00 ,  G01M17/00 ,  B60B27/00

CPC分类号： G01L5/0019 ,  B60B27/0005 ,  B60B27/0068 ,  F16C19/186 ,  F16C19/522 ,  F16C19/527 ,  F16C41/00 ,  F16C2326/02 ,  G01L5/0023 ,  G01M13/04 ,  G01M17/00

摘要： A sensor-equipped wheel support bearing assembly capable of estimating an accurate load value without depending on the frequency of fluctuation that occurs in an input load, is provided. A vehicle-wheel bearing (100) is provided with a plurality of sensors (20) for detecting a load applied thereto. The vehicle-wheel bearing (100) is provided with a signal processor (31) for generating signal vectors from output signals of the sensors, a load calculation processor (32) for calculating a load acting on a wheel, based on the signal vectors, and an input load fluctuation detector (33) for detecting a fluctuation component of the input load which is included in the output signals of the sensors (20). The load calculation processor (32) calculates the load by applying a load calculation scheme that shifts in accordance with the fluctuation component detected by the input load fluctuation detector (33).

摘要翻译： 提供了一种能够在不依赖于在输入负载中发生的波动的频率的情况下估计精确的负载值的传感器配备的车轮支撑轴承组件。 车轮轴承（100）设置有用于检测施加到其上的负载的多个传感器（20）。 车轮轴承（100）设置有用于从传感器的输出信号生成信号矢量的信号处理器（31），用于基于信号矢量计算作用在车轮上的负载的负载计算处理器（32） 以及用于检测包括在传感器（20）的输出信号中的输入负载的波动分量的输入负载波动检测器（33）。 负载计算处理器（32）通过应用根据由输入负载变动检测器（33）检测到的变动分量而偏移的负载计算方案来计算负载。

公开(公告)号：US20140212081A1

公开(公告)日：2014-07-31

申请号：US14346875

申请日：2012-09-21

申请人： NTN CORPORATION

发明人： Toru Takahashi ,  Kentarou Nishikawa ,  Wataru Hatakeyama

IPC分类号： F16C41/00 ,  B60T8/24

CPC分类号： F16C41/00 ,  B60B27/0068 ,  B60T8/245 ,  F16C19/186 ,  F16C19/522 ,  F16C2326/02 ,  G01L5/0019 ,  G01L5/16

摘要： At least one or more sensor for detecting a load acting on a wheel support bearing apparatus is provided in such bearing device, a signal processor for processing an output signal of those sensors to generate a signal vector and a load calculator for calculating the load, which acts on a vehicle wheel, from the signal vector, are provided. The load calculator has a function of determining the presence or absence of a predetermined state of a vehicle, which may affects a result of calculation of the load, and performing two types of calculation process appropriate to the presence or absence. The presence or absence of the predetermined state of the vehicle, which is determined by the load calculator is, for example, ON/OFF of a brake.

摘要翻译： 用于检测作用在车轮支撑轴承装置上的载荷的至少一个或多个传感器设置在这种轴承装置中，信号处理器用于处理那些传感器的输出信号以产生信号矢量，以及用于计算负载的负载计算器， 提供了从信号矢量作用在车轮上。 负载计算器具有确定车辆的预定状态的存在或不存在的功能，其可能影响负载的计算结果，并且执行适合于存在或不存在的两种类型的计算处理。 由负载计算器确定的车辆的预定状态的存在或不存在例如是制动器的ON / OFF。

公开(公告)号：US09126476B2

公开(公告)日：2015-09-08

申请号：US14354327

申请日：2012-10-24

申请人： NTN CORPORATION

发明人： Toru Takahashi

IPC分类号： B60K7/00 ,  B60G3/20 ,  G01L5/00 ,  B60K17/04 ,  B60B27/00

CPC分类号： B60K7/0007 ,  B60B27/00 ,  B60B27/0005 ,  B60B27/0031 ,  B60B27/0073 ,  B60G3/20 ,  B60G2200/144 ,  B60G2204/30 ,  B60G2300/50 ,  B60K17/043 ,  B60K2007/0038 ,  B60K2007/0092 ,  B60L2220/44 ,  G01L5/0009

摘要： An in-wheel motor drive assembly (11) includes a motor unit that drivingly rotates a motor-side rotating member, a speed reduction unit that reduces the rotational speed of the motor-side rotating member and transmits the reduced rotation to a wheel-side rotating member, a wheel hub (26) that is fixedly coupled to the wheel-side rotating member, a wheel hub bearing that rotatably supports the wheel hub (26), a casing (12) that covers the motor unit, the speed reduction unit, and the wheel hub bearing, a plurality of sensors (43) that are mounted on the casing (12) and capable of detecting strain generated in the casing (12), and a signal processor (46) that calculates load imposed on a wheel on the basis of strain signals output from the sensors (43).

摘要翻译： 一种轮内电动机驱动组件（11）具有使马达侧旋转部件驱动旋转的马达单元，能够减小马达侧旋转部件的旋转速度的减速单元，将该减速旋转传递至车轮侧 旋转构件，固定地联接到车轮侧旋转构件的轮毂（26），可旋转地支撑轮毂（26）的轮毂轴承，覆盖电动机单元的壳体（12），减速单元 和所述轮毂轴承，安装在所述壳体（12）上并且能够检测在所述壳体（12）中产生的应变的多个传感器（43）以及计算施加在车轮（12）上的负载的信号处理器（46） 基于从传感器（43）输出的应变信号。