公开(公告)号：US09321353B2

公开(公告)日：2016-04-26

申请号：US14359736

申请日：2012-11-22

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki

IPC: B60L3/00 ,  B60L3/06 ,  B60L1/00 ,  B60L3/10 ,  B60L11/18 ,  B60L15/00 ,  B60L15/02 ,  B60L15/20 ,  B60K7/00 ,  B60K17/04 ,  F16H1/32 ,  H02M1/32

CPC classification number: B60L3/003 ,  B60K7/0007 ,  B60K17/046 ,  B60K2007/0038 ,  B60K2007/0092 ,  B60L1/003 ,  B60L3/0061 ,  B60L3/06 ,  B60L3/102 ,  B60L11/1803 ,  B60L15/007 ,  B60L15/025 ,  B60L15/2036 ,  B60L15/2054 ,  B60L2220/14 ,  B60L2220/44 ,  B60L2220/50 ,  B60L2240/12 ,  B60L2240/24 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/425 ,  B60L2240/486 ,  B60L2240/525 ,  B60L2240/529 ,  B60L2250/16 ,  B60L2250/26 ,  B60L2260/28 ,  F16H2001/325 ,  H02M2001/327 ,  H02P29/02 ,  H02P29/60 ,  H02P29/68 ,  Y02T10/641 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/7275

Abstract: An inverter is provided with a temperature sensor for detecting the temperature of the inverter. A plurality of threshold values are set up for the temperature detected by the temperature sensor, electric current restricting conditions different from each other are set up for each of the temperature regions sorted out by each threshold value, and an inverter restricting unit for applying a restriction to an electric current command applied to the inverter in dependence on the electric current restricting condition of the temperature region, in which the detected temperature is included. Without the drivability of an automobile being disturbed, by means of a temperature control of the inverter, not only are any change in characteristic and impairment, resulting from an overheating thereof, prevented, but also an undesirable reduction of the life of the inverter is avoided.

Abstract translation: 逆变器设置有用于检测逆变器的温度的温度传感器。 为由温度传感器检测到的温度设定多个阈值，对由各阈值分选出的每个温度区域设定彼此不同的电流限制条件，以及用于施加限制的逆变器限制单元 根据包含检测温度的温度区域的电流限制条件，施加到逆变器的电流指令。 在不受汽车干扰的驾驶性能的情况下，通过逆变器的温度控制，不仅可以防止由于过热而导致的特性和损伤的任何改变，而且避免了不期望的逆变器寿命的降低 。

公开(公告)号：US09126501B2

公开(公告)日：2015-09-08

申请号：US14355735

申请日：2012-11-21

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki

IPC: B60L15/20 ,  B60L7/24 ,  B60T1/10 ,  B60T13/58 ,  B60L7/18 ,  B60L11/18 ,  B60T13/74 ,  F16D61/00

CPC classification number: B60L15/2009 ,  B60L1/003 ,  B60L3/102 ,  B60L3/108 ,  B60L7/14 ,  B60L7/18 ,  B60L7/24 ,  B60L7/26 ,  B60L11/1803 ,  B60L11/1861 ,  B60L15/2036 ,  B60L2220/44 ,  B60L2220/50 ,  B60L2240/12 ,  B60L2240/24 ,  B60L2240/26 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/461 ,  B60L2240/465 ,  B60L2250/16 ,  B60L2250/26 ,  B60L2260/28 ,  B60T1/10 ,  B60T13/586 ,  B60T13/741 ,  B60T2240/06 ,  B60T2270/604 ,  F16D61/00 ,  Y02T10/641 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/72 ,  Y02T10/7258 ,  Y02T10/7275

Abstract: An electric vehicle includes a regenerative brake and a mechanical brake. The vehicle also includes a wheel bearing unit and a load sensor associated with the wheel bearing unit. The load sensor is configured to detect a load that acts between a road surface and a tire along a direction in which the vehicle travels. The vehicle also includes a load-responsive regenerative brake limiter configured to reduce a braking torque generated by the regenerative brake when an output of the load sensor reaches a preset value. A maximally actuator may be configured to calculate a maximum possible regenerative braking torque for the regenerative brake based on a rotational frequency of a wheel and a state of charge of a battery unit and to actuate the regenerative brake at a maximum torque within that commanded range.

Abstract translation: 电动车辆包括再生制动器和机械制动器。 车辆还包括车轮轴承单元和与车轮轴承单元相关联的负载传感器。 负载传感器被构造为沿着车辆行进的方向检测在路面和轮胎之间作用的负载。 车辆还包括负载响应再生制动限制器，其被配置为当负载传感器的输出达到预设值时减小由再生制动产生的制动转矩。 最大致动器可以被配置为基于车轮的旋转频率和电池单元的充电状态来计算用于再生制动的最大可能的再生制动转矩，并且以该指令范围内的最大转矩来致动再生制动。

公开(公告)号：US09126500B2

公开(公告)日：2015-09-08

申请号：US14359430

申请日：2012-11-22

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki

IPC: B60L9/00 ,  G05B5/00 ,  B60L15/20 ,  H02P29/00 ,  H02P29/02 ,  B60L3/00 ,  B60L3/06 ,  B60K7/00 ,  F16H1/32

CPC classification number: B60L15/20 ,  B60K7/0007 ,  B60L1/003 ,  B60L3/0061 ,  B60L3/06 ,  B60L3/102 ,  B60L3/108 ,  B60L11/14 ,  B60L15/2036 ,  B60L15/2054 ,  B60L2210/40 ,  B60L2220/14 ,  B60L2220/44 ,  B60L2220/50 ,  B60L2240/34 ,  B60L2240/36 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/425 ,  B60L2240/429 ,  B60L2240/486 ,  B60L2240/622 ,  B60L2250/10 ,  B60L2250/16 ,  B60L2250/26 ,  B60L2260/28 ,  B60L2270/145 ,  F16H2001/325 ,  H02P29/028 ,  H02P29/032 ,  H02P29/64 ,  Y02T10/641 ,  Y02T10/642 ,  Y02T10/645 ,  Y02T10/70 ,  Y02T10/7077 ,  Y02T10/7241 ,  Y02T10/7258 ,  Y02T10/7275 ,  Y02T10/7291 ,  Y02T90/16 ,  Y02T90/162

Abstract: A motor control device of controlling a motor unit that drives a wheel is provided. The device include a temperature sensor that senses a temperature of a motor coil, and a motor current limiter. The motor current limiter sets a plurality of threshold values of the temperature sensed by the temperature sensor, sets a current limiting condition that are different from each other for respective sectioned temperature ranges defined by the threshold values, and limits a current for the motor unit according to the current limiting condition for the temperature ranges to which the temperature having been sensed belongs.

Abstract translation: 提供了一种控制驱动车轮的马达单元的马达控制装置。 该装置包括感测电动机线圈的温度的温度传感器和电动机限流器。 电动机限流器设定由温度传感器感测的温度的多个阈值，对由阈值限定的各个分段温度范围设定彼此不同的限流条件，并且根据阈值限制电动机单元的电流 达到感测温度属于的温度范围的限流条件。

公开(公告)号：US09114711B2

公开(公告)日：2015-08-25

申请号：US14502539

申请日：2014-09-30

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki

IPC: B60L15/20 ,  B60L3/10 ,  B60K7/00

CPC classification number: B60L3/106 ,  B60K7/0007 ,  B60L15/20 ,  B60L2240/423 ,  B60L2240/461 ,  B60L2240/463 ,  B60L2260/44 ,  Y02T10/645 ,  Y02T10/7258 ,  Y02T10/7275

Abstract: An electric vehicle includes a slip ratio estimator to estimate a slip ratio of a drive wheel on a road surface based on a detection value indicating a vehicle travel speed and a drive wheel rotational frequency; an applied torque estimator to estimate an entire torque applied to the drive wheel based on motor torque command value or motor current value of a motor unit and the torque estimated by a disturbance observer attributable to external force; a coefficient of friction estimator to estimate a coefficient of friction between a road surface and a tire of the drive wheel, based on the estimated torque and the estimated slip ratio; and a motor torque command value limiter to limit, based on a determined maximum acceptable torque, the motor torque command value to the motor unit that is generated responsively to an acceleration manipulation unit and a deceleration manipulation unit.

Abstract translation: 电动车辆包括：滑移率估计器，用于基于指示车辆行驶速度的检测值和驱动轮转速估计路面上的驱动轮的打滑比; 施加的扭矩估计器，用于基于马达单元的电动机转矩指令值或电动机电流值以及由外力引起的扰动观测器估计的转矩来估计施加到驱动轮的整个转矩; 摩擦系数估计器，用于基于估计的扭矩和估计的滑移比估计驱动轮的路面和轮胎之间的摩擦系数; 以及马达转矩指令值限制器，其基于所确定的最大可接受转矩，将电动机转矩指令值限制为响应于加速度操作单元和减速操作单元产生的所述电动机单元。

公开(公告)号：US20140303824A1

公开(公告)日：2014-10-09

申请号：US14355735

申请日：2012-11-21

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki

IPC: B60L15/20

CPC classification number: B60L15/2009 ,  B60L1/003 ,  B60L3/102 ,  B60L3/108 ,  B60L7/14 ,  B60L7/18 ,  B60L7/24 ,  B60L7/26 ,  B60L11/1803 ,  B60L11/1861 ,  B60L15/2036 ,  B60L2220/44 ,  B60L2220/50 ,  B60L2240/12 ,  B60L2240/24 ,  B60L2240/26 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/461 ,  B60L2240/465 ,  B60L2250/16 ,  B60L2250/26 ,  B60L2260/28 ,  B60T1/10 ,  B60T13/586 ,  B60T13/741 ,  B60T2240/06 ,  B60T2270/604 ,  F16D61/00 ,  Y02T10/641 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/72 ,  Y02T10/7258 ,  Y02T10/7275

Abstract: An electric vehicle includes a regenerative brake (34) and a mechanical brake (9). The vehicle also includes a wheel bearing unit (4) and a load sensor (41) associated with the wheel bearing unit (4). The load sensor (41) is configured to detect a load that acts between a road surface and a tire along a direction in which the vehicle travels. The vehicle also includes a load-responsive regenerative brake limiter (36) configured to reduce a braking torque generated by the regenerative brake (34) when an output of the load sensor (41) reaches a preset value. A maximally actuator (35) may be configured to calculate a maximum possible regenerative braking torque for the regenerative brake (34) based on a rotational frequency of a wheel and a state of charge of a battery unit and to actuate the regenerative brake at a maximum torque (34) within that commanded range.

Abstract translation: 电动车辆包括再生制动器（34）和机械制动器（9）。 车辆还包括车轮轴承单元（4）和与车轮轴承单元（4）相关联的负载传感器（41）。 负载传感器（41）被构造为沿着车辆行驶方向检测在路面和轮胎之间作用的负荷。 车辆还包括负载响应再生制动限制器（36），其被配置为当负载传感器（41）的输出达到预设值时，减小由再生制动器（34）产生的制动转矩。 最大致动器（35）可以被配置为基于车轮的旋转频率和电池单元的充电状态来计算再生制动器（34）的最大可能的再生制动转矩，并且最大程度地致动再生制动器 在该指令范围内的扭矩（34）。

公开(公告)号：US08794100B2

公开(公告)日：2014-08-05

申请号：US14045387

申请日：2013-10-03

Applicant: NTN Corporation

Inventor： Hiroshi Isobe ,  Takayoshi Ozaki

IPC: B25J13/00

CPC classification number: B25J13/00 ,  A61B17/1631 ,  A61B17/1633 ,  A61B2017/1651 ,  A61B2017/1653 ,  B23B39/14

Abstract: A remote controlled actuator includes a spindle for holding a tool, a spindle guide section of an elongated configuration, a distal end member rotatably supporting the spindle, and a drive unit housing connected to a base end of the spindle guide section. The distal end member is fitted to the spindle guide section for alteration in attitude. The spindle guide section includes an outer shell pipe, a rotary shaft, and guide pipe. Within the guide pipe, an attitude altering member is inserted to alter the attitude of the distal end member. A connection device detachably connects the spindle guide section with the drive unit housing.

Abstract translation: 远程控制致动器包括用于保持工具的主轴，细长构造的主轴引导部分，可旋转地支撑主轴的远端部件，以及连接到主轴引导部的基端的驱动单元壳体。 远端构件安装到主轴引导部分以改变姿态。 主轴引导部分包括外壳管，旋转轴和引导管。 在导管内插入姿态改变构件以改变远端构件的姿态。 连接装置将主轴引导部与驱动单元壳体可拆卸地连接。

公开(公告)号：US20130221952A1

公开(公告)日：2013-08-29

申请号：US13859198

申请日：2013-04-09

Applicant: NTN Corporation

Inventor： Takayoshi Ozaki ,  Tomomi Ishikawa ,  Toru Takahashi

IPC: G01R1/04 ,  G01B7/30

CPC classification number: G01R1/04 ,  F16C41/007 ,  G01B7/30 ,  G01R33/0005 ,  G01R33/0047 ,  G01R33/0052 ,  G01R33/07 ,  Y10T29/49002

Abstract: A sensor assembly is sandwiched together with a rubber material mixed with a vulcanizing agent in a mold assembly including an upper mold and a lower mold. The upper and lower molds, while completely sandwiching the sensor assembly, are heated for a predetermined length of time, and a pressure is then applied to the sensor assembly to complete a compressive molding.

Abstract translation: 传感器组件与包含上模和下模的模具组件中的与硫化剂混合的橡胶材料夹在一起。 上模和下模同时完全夹住传感器组件，被加热预定的时间长度，然后将压力施加到传感器组件以完成压缩模制。