公开(公告)号：US20140330470A1

公开(公告)日：2014-11-06

申请号：US14359726

申请日：2012-11-22

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki ,  Koichi Okada ,  Kenichi Suzuki

IPC: B60L15/20

CPC classification number: B60L15/2072 ,  B60L1/003 ,  B60L3/102 ,  B60L3/108 ,  B60L7/14 ,  B60L7/26 ,  B60L11/1803 ,  B60L15/2009 ,  B60L15/2036 ,  B60L2220/44 ,  B60L2220/46 ,  B60L2220/50 ,  B60L2240/12 ,  B60L2240/20 ,  B60L2240/24 ,  B60L2240/26 ,  B60L2240/34 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/429 ,  B60L2240/465 ,  B60L2240/622 ,  B60L2240/642 ,  B60L2250/16 ,  B60L2250/26 ,  B60L2260/28 ,  B60L2270/145 ,  Y02T10/641 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7275 ,  Y02T10/7291 ,  Y02T90/16 ,  Y02T90/162

Abstract: An angular acceleration monitor may monitor whether or not an angular acceleration of a wheel detected by an angular acceleration detector is equal to or smaller than an acceptable angular acceleration (W) that is calculated with the following formula: W=k1×R×Tt/m/r2 where k1 is a constant, Tt is a total drive torque that is a sum of drive torques of all motor units that drive wheels of the vehicle, m is vehicle mass, r is tire radius, and R is reduction ratio of a reducer unit interposed between the motor unit and the wheel. A slip-responsive controller causes, if it is determined that the acceptable angular acceleration is exceeded, a motor controller to reduce a drive torque of the motor unit(s).

Abstract translation: 角加速度监视器可以监视由角加速度检测器检测到的车轮的角加速度是否等于或小于用下式计算的可接受的角加速度（W）：W = k1×R×Tt / m / r2其中k1是常数，Tt是总驱动扭矩，其是驱动车辆的所有电机单元的驱动扭矩的总和，m是车辆质量，r是轮胎半径，R是减速比 减速器单元插入电动机单元和车轮之间。 如果确定超过可接受的角加速度，则滑动响应控制器导致减小马达单元的驱动扭矩的马达控制器。

公开(公告)号：US09395389B2

公开(公告)日：2016-07-19

申请号：US13859198

申请日：2013-04-09

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki ,  Tomomi Ishikawa ,  Toru Takahashi

IPC: G01B7/30 ,  G01R1/04 ,  G01R33/00 ,  G01R33/07 ,  F16C41/00

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。

公开(公告)号：US09296291B2

公开(公告)日：2016-03-29

申请号：US14462170

申请日：2014-08-18

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki

IPC: B60K7/00 ,  B60L15/20 ,  B60K17/04 ,  B60L3/10

CPC classification number: B60K7/0007 ,  B60K17/046 ,  B60K2007/0038 ,  B60K2007/0092 ,  B60L3/102 ,  B60L3/104 ,  B60L3/106 ,  B60L3/108 ,  B60L7/18 ,  B60L7/26 ,  B60L11/1803 ,  B60L15/025 ,  B60L15/20 ,  B60L15/2036 ,  B60L15/2081 ,  B60L2220/14 ,  B60L2220/16 ,  B60L2220/44 ,  B60L2220/46 ,  B60L2240/12 ,  B60L2240/14 ,  B60L2240/24 ,  B60L2240/26 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/429 ,  B60L2240/461 ,  B60L2240/465 ,  B60L2240/642 ,  B60L2240/66 ,  B60L2250/28 ,  B60L2260/44 ,  B60L2270/145 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/7258 ,  Y02T10/7275 ,  Y02T10/7291 ,  Y02T90/16

Abstract: An electric vehicle having an in-wheel motor drive system including: a wheel bearing unit rotatably supporting a drive wheel; a motor unit; and a reducer unit interposed between the motor unit and the wheel bearing unit, a motor torque command value Tmr being calculated from: (i) an estimate ^Te of external force influence on the drive wheel, which is estimated from the motor torque command value Tmr and a rotational frequency ω1 of a driven wheel; and (ii) a correction value Tc which is calculated from a rotational frequency ω2 of the drive wheel, an accelerator signal Tr and the estimate ^Tc.

Abstract translation: 一种具有轮内电动机驱动系统的电动车辆，包括：可旋转地支撑驱动轮的车轮轴承单元; 电机单元; 以及设置在电动机单元和车轮轴承单元之间的减速器单元，电动机转矩指令值Tmr由以下公式计算：（i）根据电动机转矩指令值估计的外力对驱动轮的影响的估计值 Tmr和从动轮的旋转频率ω1; 和（ii）根据驱动轮的旋转频率ω2，加速器信号Tr和估计值^ Tc计算的校正值Tc。

公开(公告)号：US20150120123A1

公开(公告)日：2015-04-30

申请号：US14587240

申请日：2014-12-31

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki

IPC: B60L3/06 ,  B60L3/12 ,  H02P6/00 ,  B60L15/20

CPC classification number: B60L3/06 ,  B60K7/0007 ,  B60L1/003 ,  B60L3/003 ,  B60L3/0061 ,  B60L3/12 ,  B60L11/1803 ,  B60L11/1861 ,  B60L15/025 ,  B60L15/2009 ,  B60L15/2036 ,  B60L15/2054 ,  B60L2220/14 ,  B60L2220/46 ,  B60L2220/50 ,  B60L2240/12 ,  B60L2240/24 ,  B60L2240/34 ,  B60L2240/36 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/425 ,  B60L2240/429 ,  B60L2240/461 ,  B60L2250/16 ,  B60L2250/26 ,  B60L2260/28 ,  B60L2270/145 ,  H02P6/28 ,  H02P29/032 ,  H02P29/64 ,  Y02T10/641 ,  Y02T10/642 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/7275

Abstract: An electric vehicle includes a motor unit configured to drive a wheel, the motor unit including motor coils; a control system including an inverter; a temperature sensor configured to sense temperature of the motor coils or the inverter; and a limiter configured to, if the temperature sensed by the temperature sensor is equal to or greater than a motor coils temperature threshold, reduce a motor current of the motor unit until a derivative dTmc/dt of the sensed temperature with time drops to zero or below, or to, if the temperature sensed by the temperature sensor is equal to or greater than an inverter temperature threshold, limit a current command to the inverter until a derivative dTic/dt of the sensed temperature with time drops to zero or below. The limiter is further configured to stop reducing a motor current of the motor or limiting the current command to the inverter.

Abstract translation: 一种电动车辆包括构造成驱动车轮的电动机单元，所述电动机单元包括电动机线圈; 包括逆变器的控制系统; 温度传感器，其构造为感测所述电动机线圈或所述逆变器的温度; 以及限制器，其被配置为，如果由所述温度传感器检测到的温度等于或大于电动机线圈温度阈值，则减小所述电动机单元的电动机电流，直到所述感测温度随时间的导数dTmc / dt下降到零或 或者如果由温度传感器感测的温度等于或大于逆变器温度阈值，则将电流指令限制在逆变器上，直到感测到的温度随时间的导数dTic / dt下降到零以下。 限制器还被配置为停止减小电动机的电动机电流或限制电流指令到逆变器。

公开(公告)号：US20140330471A1

公开(公告)日：2014-11-06

申请号：US14359736

申请日：2012-11-22

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki

IPC: B60L3/00 ,  B60K17/04 ,  B60K7/00

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 (31) is provided with a temperature sensor (Sa) of detecting the temperature (Tc) of the inverter (31). A plurality of threshold values are set up for the temperature (Tc) detected by the temperature sensor (Sa), 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 (95) of applying a restriction to an electric current command applied to the inverter (31) in dependence on the electric current restricting condition of the temperature region, in which the detected temperature (tc) is included, is provided. Without the drivability of an automobile being disturbed, by means of a temperature control of the inverter (31), 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 (31) is avoided.

Abstract translation: 逆变器（31）具有检测逆变器（31）的温度（Tc）的温度传感器（Sa）。 为由温度传感器（Sa）检测到的温度（Tc）建立多个阈值，对由每个阈值分选出的每个温度区域建立彼此不同的电流限制条件，并且逆变器 根据包含检测温度（tc）的温度区域的电流限制条件，提供对施加到逆变器（31）的电流指令施加限制的限制单元（95）。 在没有扰动的汽车的驾驶性能的情况下，通过逆变器（31）的温度控制，不仅防止了由于过热而导致的特性和损伤的任何变化，而且不利地降低了 逆变器（31）被避免。

公开(公告)号：US09751409B2

公开(公告)日：2017-09-05

申请号：US14587240

申请日：2014-12-31

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki

IPC: B60L15/02 ,  B60L3/06 ,  B60L3/12 ,  B60L1/00 ,  B60L3/00 ,  B60L11/18 ,  B60L15/20 ,  H02P6/28 ,  H02P29/032 ,  H02P29/64

CPC classification number: B60L3/06 ,  B60K7/0007 ,  B60L1/003 ,  B60L3/003 ,  B60L3/0061 ,  B60L3/12 ,  B60L11/1803 ,  B60L11/1861 ,  B60L15/025 ,  B60L15/2009 ,  B60L15/2036 ,  B60L15/2054 ,  B60L2220/14 ,  B60L2220/46 ,  B60L2220/50 ,  B60L2240/12 ,  B60L2240/24 ,  B60L2240/34 ,  B60L2240/36 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/425 ,  B60L2240/429 ,  B60L2240/461 ,  B60L2250/16 ,  B60L2250/26 ,  B60L2260/28 ,  B60L2270/145 ,  H02P6/28 ,  H02P29/032 ,  H02P29/64 ,  Y02T10/641 ,  Y02T10/642 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/7275

Abstract: An electric vehicle includes a motor unit configured to drive a wheel, the motor unit including motor coils; a control system including an inverter; a temperature sensor configured to sense temperature of the motor coils or the inverter; and a limiter configured to, if the temperature sensed by the temperature sensor is equal to or greater than a motor coils temperature threshold, reduce a motor current of the motor unit until a derivative dTmc/dt of the sensed temperature with time drops to zero or below, or to, if the temperature sensed by the temperature sensor is equal to or greater than an inverter temperature threshold, limit a current command to the inverter until a derivative dTic/dt of the sensed temperature with time drops to zero or below. The limiter is further configured to stop reducing a motor current of the motor or limiting the current command to the inverter.

公开(公告)号：US09172319B2

公开(公告)日：2015-10-27

申请号：US14355478

申请日：2012-11-14

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki

IPC: H02P6/14 ,  H02P21/00 ,  H02K7/10 ,  B60K7/00 ,  H02P6/12 ,  H02K7/14 ,  H02K7/116 ,  B60L11/18 ,  B60L3/00 ,  B60L15/20 ,  H02K1/24 ,  H02K1/27 ,  B60K17/04

CPC classification number: H02P6/142 ,  B60K7/00 ,  B60K7/0007 ,  B60K17/046 ,  B60L3/0061 ,  B60L11/1803 ,  B60L15/2036 ,  B60L2220/14 ,  B60L2220/16 ,  B60L2220/46 ,  B60L2240/24 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/425 ,  B60L2240/80 ,  B60L2250/26 ,  B60L2260/28 ,  B60L2260/44 ,  H02K1/246 ,  H02K1/2766 ,  H02K7/10 ,  H02K7/116 ,  H02K7/14 ,  H02P6/12 ,  H02P6/15 ,  H02P6/157 ,  Y02T10/641 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7275

Abstract: A magnetic force estimating unit (38) for estimating the magnetic force of a permanent magnet of a rotor of a motor (6), a determining unit (39), and a demagnetization responsive timing changing unit (40) are provided in an inverter device (22) or an electric control unit (21). The magnetic force estimating unit (38) performs a determination of the magnetic force with a predetermined rule from detection signals of at least two of the motor rotation number, motor voltage and motor current. The determining unit (39) determines whether or not a demagnetization occurs. In response to the result of determination by the determining unit (39), the demagnetization responsive timing changing unit (40) changes the timing, at which the maximum electric current relative to the phase of the rotor is fed, so that with respect the motor drive by the inverter device the reluctance torque of the motor may be increased.

Abstract translation: 用于估计电动机（6）的转子的永磁体的磁力的磁力估计单元（38），确定单元（39）和去磁响应定时改变单元（40）设置在逆变器装置 （22）或电气控制单元（21）。 磁力估计单元（38）根据电动机旋转数，电动机电压和电动机电流中的至少两个的检测信号，以规定的规律来进行磁力的判定。 确定单元（39）确定是否发生消磁。 响应于确定单元（39）的确定结果，退磁响应定时改变单元（40）改变相对于转子的相位被馈送的最大电流的定时，使得对于电动机 由变频器驱动电动机的磁阻转矩可能会增加。

公开(公告)号：US20140324265A1

公开(公告)日：2014-10-30

申请号：US14359430

申请日：2012-11-22

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki

IPC: B60L15/20 ,  B60K7/00

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 (6) that drives a wheel (2) is provided. The device include a temperature sensor (Sa) that senses a temperature (Tc) of a motor coil, and a motor current limiter (95). The motor current limiter (95) sets a plurality of threshold values of the temperature (Tc) sensed by the temperature sensor (Sa), 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 (6) according to the current limiting condition for the temperature ranges to which the temperature (Tc) having been sensed belongs.

Abstract translation: 提供了一种用于控制驱动轮（2）的马达单元（6）的马达控制装置。 该装置包括感测电动机线圈的温度（Tc）的温度传感器（Sa）和电动机限流器（95）。 电动机限流器（95）设定由温度传感器（Sa）检测出的温度（Tc）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， 并且根据感测到的温度（Tc）属于的温度范围的限流条件来限制电动机单元（6）的电流。

公开(公告)号：US20140285128A1

公开(公告)日：2014-09-25

申请号：US14355478

申请日：2012-11-14

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki

IPC: H02P6/14

CPC classification number: H02P6/142 ,  B60K7/00 ,  B60K7/0007 ,  B60K17/046 ,  B60L3/0061 ,  B60L11/1803 ,  B60L15/2036 ,  B60L2220/14 ,  B60L2220/16 ,  B60L2220/46 ,  B60L2240/24 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/425 ,  B60L2240/80 ,  B60L2250/26 ,  B60L2260/28 ,  B60L2260/44 ,  H02K1/246 ,  H02K1/2766 ,  H02K7/10 ,  H02K7/116 ,  H02K7/14 ,  H02P6/12 ,  H02P6/15 ,  H02P6/157 ,  Y02T10/641 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7275

Abstract: A magnetic force estimating unit (38) for estimating the magnetic force of a permanent magnet of a rotor of a motor (6), a determining unit (39), and a demagnetization responsive timing changing unit (40) are provided in an inverter device (22) or an electric control unit (21). The magnetic force estimating unit (38) performs a determination of the magnetic force with a predetermined rule from detection signals of at least two of the motor rotation number, motor voltage and motor current. The determining unit (39) determines whether or not a demagnetization occurs. In response to the result of determination by the determining unit (39), the demagnetization responsive timing changing unit (40) changes the timing, at which the maximum electric current relative to the phase of the rotor is fed, so that with respect the motor drive by the inverter device the reluctance torque of the motor may be increased.

Abstract translation: 用于估计电动机（6）的转子的永磁体的磁力的磁力估计单元（38），确定单元（39）和去磁响应定时改变单元（40）设置在逆变器装置 （22）或电气控制单元（21）。 磁力估计单元（38）根据电动机旋转数，电动机电压和电动机电流中的至少两个的检测信号，以规定的规律来进行磁力的判定。 确定单元（39）确定是否发生消磁。 响应于确定单元（39）的确定结果，退磁响应定时改变单元（40）改变相对于转子的相位被馈送的最大电流的定时，使得对于电动机 由变频器驱动电动机的磁阻转矩可能会增加。

公开(公告)号：US09550435B2

公开(公告)日：2017-01-24

申请号：US14359726

申请日：2012-11-22

Applicant: NTN CORPORATION

Inventor： Takayoshi Ozaki ,  Koichi Okada ,  Kenichi Suzuki

IPC: B60L15/20 ,  B60L3/10 ,  B60L1/00 ,  B60L7/14 ,  B60L7/26 ,  B60L11/18

CPC classification number: B60L15/2072 ,  B60L1/003 ,  B60L3/102 ,  B60L3/108 ,  B60L7/14 ,  B60L7/26 ,  B60L11/1803 ,  B60L15/2009 ,  B60L15/2036 ,  B60L2220/44 ,  B60L2220/46 ,  B60L2220/50 ,  B60L2240/12 ,  B60L2240/20 ,  B60L2240/24 ,  B60L2240/26 ,  B60L2240/34 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/429 ,  B60L2240/465 ,  B60L2240/622 ,  B60L2240/642 ,  B60L2250/16 ,  B60L2250/26 ,  B60L2260/28 ,  B60L2270/145 ,  Y02T10/641 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7275 ,  Y02T10/7291 ,  Y02T90/16 ,  Y02T90/162

Abstract: An angular acceleration monitor may monitor whether or not an angular acceleration of a wheel detected by an angular acceleration detector is equal to or smaller than an acceptable angular acceleration (W) that is calculated with the following formula: W=k1×R×Tt/m/r2 where k1 is a constant, Tt is a total drive torque that is a sum of drive torques of all motor units that drive wheels of the vehicle, m is vehicle mass, r is tire radius, and R is reduction ratio of a reducer unit interposed between the motor unit and the wheel. A slip-responsive controller causes, if it is determined that the acceptable angular acceleration is exceeded, a motor controller to reduce a drive torque of the motor unit(s).

Abstract translation: 角加速度监视器可以监视由角加速度检测器检测到的车轮的角加速度是否等于或小于用下式计算的可接受的角加速度（W）：W = k1×R×Tt / m / r2其中k1是常数，Tt是总驱动扭矩，其是驱动车辆的所有电机单元的驱动扭矩的总和，m是车辆质量，r是轮胎半径，R是减速比 减速器单元插入电动机单元和车轮之间。 如果确定超过可接受的角加速度，则滑动响应控制器导致减小马达单元的驱动扭矩的马达控制器。