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    • 2. 发明授权
    • Electric power steering apparatus
    • 电动助力转向装置
    • US07188702B2
    • 2007-03-13
    • US10439606
    • 2003-05-16
    • Masanori TakagiTakashi KuribayashiAtsuhiko Yoneda
    • Masanori TakagiTakashi KuribayashiAtsuhiko Yoneda
    • B62D5/04
    • B62D5/0463B62D5/046H02P21/22
    • An electric power steering apparatus is provided, which has a first device for detection of steering torque, a motor, a motor drive unit, a second device for determining a target current based upon at least a signal of steering torque, a third device for detection of a motor current, and a control unit for generating a signal for motor drive based upon at least a deviation between the target current and motor current and transmitting the signal for motor drive to the motor drive unit. The apparatus has a feature that the control unit includes a fourth device for weakening a magnetic field within the motor according to the deviation or a value computed based upon the deviation.
    • 本发明提供一种电动助力转向装置,其具有用于检测转向转矩的第一装置,电动机,电动机驱动单元,至少基于转向转矩的信号确定目标电流的第二装置,第三检测装置 以及控制单元,用于基于至少目标电流和电动机电流之间的偏差产生用于电动机驱动的信号,并将用于电动机驱动的信号传送到电动机驱动单元。 该装置的特征在于,控制单元包括用于根据偏差或基于偏差计算的值来削弱电动机内的磁场的第四装置。
    • 5. 发明授权
    • Driving force distribution device for vehicle
    • 车辆驱动力分配装置
    • US06543595B2
    • 2003-04-08
    • US09818974
    • 2001-03-27
    • Shinji OkumaRyuji AsadaAkihiro IwazakiTakashi KuribayashiTatsuhiro TomariMasakatsu HoriKazuhiro WadaKiyoshi Wakamatsu
    • Shinji OkumaRyuji AsadaAkihiro IwazakiTakashi KuribayashiTatsuhiro TomariMasakatsu HoriKazuhiro WadaKiyoshi Wakamatsu
    • F16D1900
    • F16D27/14B60K23/04F16H48/30
    • A driving force distribution device which controls the engagement forces of electromagnetic clutches and which govern the torque distribution between the driving wheels of a vehicle by calculating a target magnetic flux density and converting the same into a target excitation current. Since the relationship between the target magnetic flux density and the target excitation current changes according to a decrease in the air gaps accompanying wear of the frictional engagement members of the electromagnetic clutches, a relationship between the magnetic flux density and the excitation current is determined by applying current to the electromagnetic clutches when torque distribution control is not being carried out such as when the system is started, and the target excitation current is calculated from the target magnetic flux density based on the determined relationship. Since there is no need to detect dynamic changes in the magnetic flux density, inexpensive devices can be used as magnetic flux density detecting means so contributing to a reduction in the cost.
    • 一种驱动力分配装置,其通过计算目标磁通密度并将其转换为目标励磁电流来控制电磁离合器的接合力并且控制车辆的驱动轮之间的转矩分布。 由于目标磁通密度和目标激励电流之间的关系随着伴随电磁离合器的摩擦接合构件的磨损的气隙的减小而变化,所以磁通密度和激励电流之间的关系通过应用 基于所确定的关系,根据目标磁通密度计算当系统启动时不进行转矩分配控制时的电磁离合器的电流。 由于不需要检测磁通密度的动态变化,所以可以使用便宜的装置作为磁通密度检测装置,从而有助于降低成本。
    • 7. 发明授权
    • Co-operative control system for a vehicle
    • 车辆合作控制系统
    • US06295496B1
    • 2001-09-25
    • US09654272
    • 2000-09-01
    • Tomoyuki ShinmuraHiromi InagakiMasakatsu HoriTatsuhiro TomariShinji OkumaAkihiro IwazakiTakashi KuribayashiKazuhiro Wada
    • Tomoyuki ShinmuraHiromi InagakiMasakatsu HoriTatsuhiro TomariShinji OkumaAkihiro IwazakiTakashi KuribayashiKazuhiro Wada
    • G06F1520
    • B62D5/0484B62D5/0472B62D9/002F16H48/10
    • A co-operative control system for a vehicle having a force distribution device for distributing at least one of a driving force and a braking force between spaced apart wheels, the co-operative system having: a first control mechanism for controlling the operation of the force distribution device, an electric power steering device having a motor for applying a steering assist torque to a steering system of the vehicle, and a second control mechanism for calculating a motor control signal for driving the motor based on at least a steering torque detected by a steering torque sensor, and for inhibiting drive of the motor based on at least an actual motor detected by a current sensor and the steering torque. The first control mechanism calculates a correction signal for correcting the motor control signal based on the amount of control of the force distribution device and an offset current for correcting the actual motor current signal; and the second control mechanism drives the motor based on a corrected motor control signal obtained by correcting the motor control signal with the correction signal and inhibits the drive of the motor based on a value obtained by correcting the actual motor current signal with the offset current and the steering torque signal, the offset current being set smaller than the correction signal.
    • 一种用于车辆的合作控制系统,具有用于在间隔开的车轮之间分配驱动力和制动力中的至少一个的力分配装置,所述协作系统具有:用于控制力的操作的第一控制机构 分配装置,具有用于向车辆的转向系统施加转向辅助转矩的电动机的电动助力转向装置,以及至少基于由所述车辆的转向检测到的转向转矩来计算用于驱动所述电动机的电动机控制信号的第二控制机构 转向扭矩传感器,并且用于基于至少由电流传感器检测到的实际电动机和转向转矩来禁止电动机的驱动。 第一控制机构基于力分配装置的控制量和用于校正实际电动机电流信号的偏移电流来计算用于校正电动机控制信号的校正信号; 并且第二控制机构基于通过利用校正信号校正电动机控制信号而获得的校正电动机控制信号来驱动电动机,并且基于通过利用偏移电流校正实际电动机电流信号而获得的值来禁止电动机的驱动,以及 转向转矩信号,偏移电流被设定为小于校正信号。
    • 8. 发明授权
    • Electric steering actuator
    • 电动转向执行器
    • US5988311A
    • 1999-11-23
    • US641373
    • 1996-04-30
    • Takashi KuribayashiKazuhiro KishimotoHirokazu KitazawaYoshitaka KatashimaYoshio KakizakiHitoshi Suda
    • Takashi KuribayashiKazuhiro KishimotoHirokazu KitazawaYoshitaka KatashimaYoshio KakizakiHitoshi Suda
    • B62D5/04B62D7/14H02K7/06
    • B62D5/0448B62D5/0427
    • In an electric steering actuator comprising an electric motor having a hollow output shaft, a steering shaft passed through the hollow center of the output shaft of the electric motor, and a ball-screw mechanism provided between the output shaft and the steering shaft for converting the rotary movement of the output shaft into a longitudinal movement of the steering shaft. The ball-screw mechanism comprises a threaded section of the steering shaft, and a nut member which threadably engages with the threaded section of the steering shaft via steel balls, and is secured to the output shaft of the electric motor via a serration coupling or the like which achieves an axially free but rotatively fast coupling between the two parts. Thus, the overall axial dimension of the actuator can be reduced, and the step of joining these two parts is significantly simplified in terms of both effort and time while the number of component parts is also reduced. In particular, by installing the ball-screw mechanism in the first casing section in an axially immobile manner, removal of the rotor or the motor assembly is substantially simplified, thereby making the actuator easier to manufacture and service. Also, the motor can be interchanged without affecting the ball-screw mechanism.
    • 在包括具有中空输出轴的电动机的电动转向致动器中,转向轴穿过电动机的输出轴的中空中心,以及设置在输出轴和转向轴之间的滚珠丝杠机构,用于将 输出轴的旋转运动转向转向轴的纵向运动。 滚珠丝杠机构包括转向轴的螺纹部分和螺母构件,螺母构件通过钢球与转向轴的螺纹部分螺纹接合,并通过锯齿联轴器或电动马达固定到电动机的输出轴上 其实现了两个部件之间的轴向自由但是可旋转地快速的联接。 因此,能够减少致动器的总体轴向尺寸,并且在部件数量也减少的同时,在努力和时间方面都显着简化了连接这两个部件的步骤。 特别地,通过将​​滚珠丝杠机构以轴向固定的方式安装在第一壳体部分中,大大简化了转子或马达组件的拆卸,从而使致动器更容易制造和使用。 此外,马达可以互换而不影响滚珠丝杆机构。
    • 9. 发明授权
    • Electric steering actuator
    • 电动转向执行器
    • US5957236A
    • 1999-09-28
    • US641372
    • 1996-04-30
    • Hirokazu KitazawaKazuhiro KishimotoYoshio KakizakiYoshitaka KatashimaTakashi KuribayashiHitoshi Suda
    • Hirokazu KitazawaKazuhiro KishimotoYoshio KakizakiYoshitaka KatashimaTakashi KuribayashiHitoshi Suda
    • B62D5/04B62D7/14H02K7/06
    • B62D5/0427B62D5/0445
    • In an electric steering actuator comprising an electric motor having a hollow output shaft, a steering shaft passed through the hollow center of the output shaft of the electric motor, and a ball-screw mechanism provided between the output shaft and the steering shaft for converting the rotary movement of the output shaft into a longitudinal movement of the steering shaft, a rotation preventing mechanism is provided for preventing the rotation of the steering shaft around its axial line. The rotation preventing mechanism comprises a guide pin extending in the casing in parallel with the axial line of the steering shaft, and a fork member engaging the guide pin between two prongs thereof. Because the rotation preventing mechanism can be formed by using a guide pin made of a stock steel or other metallic member, such as a cold finished steel bar, the manufacturing cost can be reduced. Furthermore by using a fork member defining an open slot for engagement with the guide pin, the assembling process is simplified, thereby reducing the manufacturing cost. In particular, by interposing a plastic slider between the pin and the fork member, metallic noises are avoided, and a smooth operation is ensured at a low cost.
    • 在包括具有中空输出轴的电动机的电动转向致动器中,转向轴穿过电动机的输出轴的中空中心,以及设置在输出轴和转向轴之间的滚珠丝杠机构,用于将 输出轴旋转运动到转向轴的纵向运动中,设置有防止转向轴绕其轴线旋转的旋转防止机构。 旋转防止机构包括在壳体内平行于转向轴的轴线延伸的引导销和在其两个叉头之间接合引导销的叉构件。 由于可以通过使用由坯钢或其他金属构件(例如冷成品钢棒)制成的引导销来形成旋转防止机构,所以可以降低制造成本。 此外,通过使用限定开口槽的叉构件与导销接合,组装过程被简化,从而降低制造成本。 特别地,通过在销和叉构件之间插入塑料滑动件,避免了金属噪声,并且以低成本确保了平稳的操作。