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公开(公告)号：US20140077631A1
公开(公告)日：2014-03-20
申请号：US14026449
申请日：2013-09-13
申请人： Masato WATANABE , Takeshi KANAYAMA , Yosuke KATO , Nobuhito MORI , Shinichiro SUENAGA , Takamasa TAKEUCHI , Norihiro MAE , Tomoo ATARASHI , Yasuo SHIMIZU
发明人： Masato WATANABE , Takeshi KANAYAMA , Yosuke KATO , Nobuhito MORI , Shinichiro SUENAGA , Takamasa TAKEUCHI , Norihiro MAE , Tomoo ATARASHI , Yasuo SHIMIZU
IPC分类号： H02K9/19
摘要： In a vertical through hole of a rotational shaft, a first protrusion portion and a second protrusion portion protruding from an inner peripheral surface of the vertical through hole are provided in an axial direction of the though hole to form a storage area for storing oil, and discharge holes for directly discharging oil flowing over the first protrusion portion into the transaxle casing are provided in parallel with the cooling holes.
摘要翻译： 在旋转轴的垂直通孔中，沿着贯通孔的轴向设置有从垂直通孔的内周面突出的第一突出部和第二突出部，形成用于储存油的储存区域， 与冷却孔平行设置用于将在第一突起部分上流动的油直接排放到变速驱动桥壳体中的排放孔。
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公开(公告)号：US20120271513A1
公开(公告)日：2012-10-25
申请号：US13452321
申请日：2012-04-20
IPC分类号： B62D6/10
CPC分类号： B62D5/0493 , B62D5/0484
摘要： In the event of a failure of a first electric motor drive signal generator, e.g., the microcomputer, which generates a first electric motor drive signal for performing a feedback control, a second electric motor drive signal generator, e.g., a PWM signal generator, which is made up of discrete circuit components, directly converts a steering torque signal into a second electric motor drive signal. An electric motor, which generates the assistive steering force, is driven by the second electric motor drive signal.
摘要翻译： 在第一电动机驱动信号发生器（例如，产生用于执行反馈控制的第一电动机驱动信号的微型计算机）发生故障的情况下，第二电动机驱动信号发生器，例如PWM信号发生器，其中， 由分立电路部件组成，将转向转矩信号直接转换成第二电动机驱动信号。 产生辅助转向力的电动机由第二电动机驱动信号驱动。
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公开(公告)号：US20110303480A1
公开(公告)日：2011-12-15
申请号：US13158174
申请日：2011-06-10
IPC分类号： B62D5/04
摘要： In an electric power steering apparatus, an elastic member, disposed between the steering shaft and the housing, configured to be elastically deformed in accordance with rotation or displacement in a vehicle width direction, of the steering shaft. At least two bearings, disposed with a gap in an axial direction of the steering shaft, are configured to support the steering shaft. The elastic member is disposed between the bearings. A supporting member may be disposed between the steering shaft and the elastic member and configured to be displaced by a rotation of a predetermined angle or predetermined distance in accordance with the rotation or a displacement, in the width direction of the vehicle, of the steering shaft with slidable support for the steering shaft. The elastic member is fixed to the supporting member and abuts the housing.
摘要翻译： 在电动助力转向装置中，设置在所述转向轴和所述壳体之间的弹性构件被构造成根据所述转向轴的车辆宽度方向上的旋转或位移而弹性变形。 在转向轴的轴向方向上设置有间隙的至少两个轴承构造成支撑转向轴。 弹性构件设置在轴承之间。 支撑构件可以设置在转向轴和弹性构件之间，并且构造成根据车辆的宽度方向上的转向或位移而以预定角度或预定距离的旋转而移位，转向轴 具有用于转向轴的可滑动支撑。 弹性构件固定在支撑构件上并与壳体抵接。
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公开(公告)号：US20110240400A1
公开(公告)日：2011-10-06
申请号：US13157882
申请日：2011-06-10
申请人： Yasuo SHIMIZU
发明人： Yasuo SHIMIZU
IPC分类号： B62D5/04
CPC分类号： B62D5/0469
摘要： An electric power steering system includes a steering wheel, a rack-and-pinion type steering gear box connected to the steering wheel, a steering torque sensor, a pinion shaft, and a steering actuator mounted on the pinion shaft to assist a steering operation conducted by a driver. An overload preventing control is conducted so that a sum of a torque conversion value of an assist current and a steering torque detected by the steering torque sensor equal a predetermined threshold value. When the steering gear box has reached a stroke end, and the assist current or the steering torque is smaller than a predetermined threshold value, the overload preventing control is conducted using a threshold value that is less than the predetermined threshold value.
摘要翻译： 一种电动助力转向系统，包括方向盘，连接到方向盘的齿条 - 小齿轮型转向齿轮箱，转向扭矩传感器，小齿轮轴和安装在小齿轮轴上的转向致动器，以辅助转向操作 由司机 进行过载防止控制，使得辅助电流的转矩转换值与由转向转矩传感器检测的转向转矩的和等于预定阈值。 当转向齿轮箱已经到达行程末端，并且辅助电流或转向转矩小于预定阈值时，使用小于预定阈值的阈值来进行过载防止控制。
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5.发明申请MAGNETOSTRICTIVE TORQUE SENSOR AND ELECTRICALLY-ASSISTED POWER STEERING APPARATUS 有权磁感应扭矩传感器和电动辅助动力转向装置公开(公告)号：US20120137789A1
公开(公告)日：2012-06-07
申请号：US13301789
申请日：2011-11-22
IPC分类号： G01L3/10
摘要： a magnetostrictive torque sensor includes a rotation shaft, a magnetostrictive member, and a plurality of detectors. The rotation shaft is rotationally supported. The magnetostrictive member is disposed on a surface of the rotation shaft and being deformable in accordance with a magnitude of rotation torque applied to the rotation shaft to change magnetic permeability. The plurality of detectors are disposed on a periphery of the rotation shaft. Each of the detectors is configured to detect a change in magnetic permeability of the magnetostrictive member in a form of an electrical change. The detectors are configured to detect different amounts of electrical change from one another if amounts of change in deformation are same throughout the magnetostrictive member.
摘要翻译： 磁致伸缩扭矩传感器包括旋转轴，磁致伸缩构件和多个检测器。 旋转轴旋转地支撑。 磁致伸缩构件设置在旋转轴的表面上并且可根据施加到旋转轴的旋转扭矩的大小变形以改变磁导率。 多个检测器设置在旋转轴的周边。 每个检测器被配置为以电变化的形式检测磁致伸缩构件的磁导率的变化。 如果在整个磁致伸缩构件中变形量的变化量相同，则检测器被配置为检测彼此之间的不同电量变化量。
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6.发明申请ELECTRIC STEERING SYSTEM FOR RAPIDLY INCREASING DAMPER GAIN AFTER STEERING SPEED EXCEEDS A SPECIFIC VALUE 有权转向速度超过特定值后，快速增加阻尼器增益的电动转向系统公开(公告)号：US20100299026A1
公开(公告)日：2010-11-25
申请号：US12850821
申请日：2010-08-05
CPC分类号： B62D5/0469
摘要： An electric steering system includes a steering torque measuring device for measuring a steering torque input into a steering system, a steering speed measuring device for measuring a steering speed of the steering system; a target current computing section for computing a target current based on the steering torque measured by the steering torque measuring device, and a control section for applying a steering power to the steering system by driving a motor according to the target current. When the measured steering speed is less than a predetermined speed value, the control section applies damping to the steering system based on the measured steering speed and when it is not the control section performs a control operation of adding a specified steering torque defined when the steering speed is equal to the predetermined speed value and an increment for the steering torque determined in accordance with the steering speed to each other, defining the sum of the addition as a target steering torque, and controlling the target current so that the measured steering torque coincides with the target steering torque.
摘要翻译： 电动转向系统包括用于测量输入到转向系统的转向转矩的转向转矩测量装置，用于测量转向系统的转向速度的转向速度测量装置; 用于基于由转向转矩测量装置测量的转向转矩来计算目标电流的目标电流计算部分，以及通过根据目标电流驱动电动机将转向功率施加到转向系统的控制部分。 当所测量的转向速度小于预定速度值时，控制部分基于所测量的转向速度对转向系统施加阻尼，并且当不是控制部分执行控制操作时，该转向转向 速度等于预定速度值，并且根据转向速度确定的转向转矩的增量，将相加的和定义为目标转向转矩，并且控制目标电流，使得测量的转向转矩一致 与目标转向扭矩。
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公开(公告)号：US20100263962A1
公开(公告)日：2010-10-21
申请号：US12755074
申请日：2010-04-06
申请人： Yasuo SHIMIZU
发明人： Yasuo SHIMIZU
摘要： A magnetostrictive torque sensor includes a rotatable shaft rotatably supported by bearings, a magnetostrictive film disposed on the surface of the rotatable shaft, and a detecting coil that detects a change in a magnetic property of the magnetostrictive film. A hollow cylindrical ring is press-fitted over and fixed to the rotatable shaft near the magnetostrictive film, for example, near the right end of the magnetostrictive film.
摘要翻译： 磁致伸缩扭矩传感器包括由轴承可旋转地支撑的可旋转轴，设置在可旋转轴的表面上的磁致伸缩膜，以及检测磁致伸缩膜的磁特性变化的检测线圈。 中空的圆柱形环被压配合在磁致伸缩膜附近的可旋转轴上，例如靠近磁致伸缩膜的右端。
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公开(公告)号：US20080099272A1
公开(公告)日：2008-05-01
申请号：US11977267
申请日：2007-10-24
申请人： Yasuo SHIMIZU , Katsuji WATANABE , Atsuhiko YONEDA
发明人： Yasuo SHIMIZU , Katsuji WATANABE , Atsuhiko YONEDA
摘要： Even in the even that, when a steering torque is applied to a steering wheel 11 of an electric power steering system, a pinion shaft 21 of a rack-and-pinion steering gear box 16 is curved by a bending moment generated by a reaction force which a pinion 20 receives from a rack 18, since a steering shaft 14 on which a magnetostriction torque sensor 34 is provided is connected to the pinion shaft 21 via a universal joint 15, the transmission of the bending moment to the steering shaft 14 is made difficult to occur. As a result, the effect imposed by the bending moment on the detection accuracy of the magnetostriction torque sensor 34 provided on the steering shaft 14 can be suppressed to a minimum level.
摘要翻译： 即使在转向转矩施加到电动助力转向系统的方向盘11的情况下，齿条齿轮式转向齿轮箱16的小齿轮轴21由反作用力产生的弯矩弯曲 小齿轮20从齿条18接收，由于设置有磁致伸缩转矩传感器34的转向轴14通过万向接头15连接到小齿轮轴21，从而将弯矩传递到转向轴14 很难发生 结果，可以将由弯矩施加的效果抑制在设置在转向轴14上的磁致伸缩转矩传感器34的检测精度的最低水平。
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公开(公告)号：US20120199414A1
公开(公告)日：2012-08-09
申请号：US13358249
申请日：2012-01-25
CPC分类号： B62D5/0463 , B62D5/0484 , B62D6/008
摘要： An electric power steering apparatus includes a motor control unit for controlling an electric motor operatively connected to a steering shaft. The motor control unit includes a first control unit for controlling a steering torque detected by a torque detecting unit so as to bring the steering torque to zero or to a first predetermined value, and a second control unit for controlling the steering torque detected by the torque detecting unit so as to bring the steering torque to a second predetermined value which is greater than zero or than the first predetermined value, based on an operational quantity detected by an operational-quantity detecting unit or a quantity representative of a vehicle behavior detected by a vehicle-behavior detecting unit. The motor control unit controls the electric motor based on an output signal from the first control unit and an output signal from the second control unit.
摘要翻译： 电动转向装置包括用于控制可操作地连接到转向轴的电动机的电动机控制单元。 电动机控制单元包括：第一控制单元，用于控制由转矩检测单元检测的转向转矩，以使转向转矩为零或达到第一预定值;第二控制单元，用于控制由转矩检测的转向转矩 检测单元，以便基于由操作量检测单元检测到的操作量或代表由所述操作量检测单元检测到的车辆行为的数量，使所述转向扭矩达到大于零或所述第一预定值的第二预定值 车辆行为检测单元。 马达控制单元基于来自第一控制单元的输出信号和来自第二控制单元的输出信号来控制电动机。
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公开(公告)号：US20100263457A1
公开(公告)日：2010-10-21
申请号：US12756283
申请日：2010-04-08
申请人： Atsuhiko YONEDA , Yasuo SHIMIZU
发明人： Atsuhiko YONEDA , Yasuo SHIMIZU
CPC分类号： G01L3/102 , G01L3/103 , H01F10/14 , H01F41/24 , H01L41/125 , Y10T29/49007 , Y10T29/4902
摘要： A magnetostrictive torque sensor includes a single magnetostrictive film disposed on a steering shaft, and first and second coils for detecting changes in a magnetic property of the magnetostrictive film. The single magnetostrictive film includes a first anisotropic region and a second anisotropic region, having respective magnetic anisotropies inverse to each other. The first coil is disposed in confronting relation to the first anisotropic region, whereas the second coil is disposed in confronting relation to the second anisotropic region.
摘要翻译： 磁致伸缩扭矩传感器包括设置在转向轴上的单个磁致伸缩膜，以及用于检测磁致伸缩膜的磁特性变化的第一和第二线圈。 单个磁致伸缩膜包括具有彼此相反的各自的磁各向异性的第一各向异性区域和第二各向异性区域。 第一线圈以与第一各向异性区域相对的方式设置，而第二线圈以与第二各向异性区域相对的方式设置。
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