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公开(公告)号：US06543569B1
公开(公告)日：2003-04-08
申请号：US09680699
申请日：2000-10-06
申请人： Yasuo Shimizu , Yasuharu Ohyama , Katsuji Watanabe , Shigeru Yamawaki , Atsuhiko Yoneda , Yasuhiro Terada
发明人： Yasuo Shimizu , Yasuharu Ohyama , Katsuji Watanabe , Shigeru Yamawaki , Atsuhiko Yoneda , Yasuhiro Terada
IPC分类号： B62D504
CPC分类号： F16H55/26 , B21K1/767 , B62D3/123 , B62D3/126 , B62D5/04 , B62D5/0421 , F16H55/08 , F16H55/285 , Y10T74/1906 , Y10T74/19953
摘要： An electric power steering apparatus comprising a rack shaft having two racks, a first rack-and-pinion mechanism for transferring a steering torque to the rack shaft, and a second rack-and-pinion mechanism for transferring an assist torque to the rack shaft. The second rack-and-pinion mechanism includes a pinion and a rack both being helical gears so that a large torque can be transmitted to the rack shaft. Teeth of the pinion and rack are arc profiled. The arc profiled teeth mesh with each other through a large contact area of concave and convex surfaces thereof and hence with a reduced contact pressure compared to involute profiled teeth. The arc profiled teeth thus have increased surface fatigue strength, bending strength and bending fatigue strength and can transmit an assist torque sufficiently to the rack shaft. Moreover, they have durability sufficient to withstand a torque load of a motor inertia.
摘要翻译： 一种电动助力转向装置，包括具有两个齿条的齿条轴，用于将转向转矩传递到齿条轴的第一齿条和小齿轮机构，以及用于将辅助转矩传递到齿条轴的第二齿条齿轮机构。 第二齿条齿轮机构包括小齿轮和齿条，两者都是斜齿轮，从而能够将大的扭矩传递到齿条轴。 小齿轮和齿条的牙齿呈弧形。 弧形牙齿通过其凹凸表面的大的接触面彼此啮合，因此与渐开线成型齿相比具有降低的接触压力。 因此，弧形牙齿具有增加的表面疲劳强度，弯曲强度和弯曲疲劳强度，并且可以将足够的辅助扭矩传递到齿条轴。 此外，它们具有足以承受电动机惯性的转矩负载的耐久性。
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公开(公告)号：US08066092B2
公开(公告)日：2011-11-29
申请号：US12290882
申请日：2008-11-04
IPC分类号： B62D5/04
CPC分类号： B62D1/16 , B62D5/04 , B62D5/0469
摘要： An electric power steering device is configured to transmit an auxiliary torque to a steering unit of front wheels, and includes: an operator; an electric motor configured to generate the auxiliary torque in accordance with at least a steering torque generated by input from the operator; the steering unit of front wheels which includes a pinion shaft; and a rotation terminating mechanism which provides a motion terminating end of the operator, the rotation terminating mechanism being disposed between the operator and the pinion shaft.
摘要翻译： 电动助力转向装置被配置为向前轮的转向单元传递辅助转矩，并且包括：操作者; 电动机，被配置为根据至少由操作者的输入产生的转向转矩产生辅助转矩; 前轮的转向单元包括小齿轮轴; 以及旋转终止机构，其提供操作者的运动终止端，旋转终止机构设置在操作者和小齿轮轴之间。
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公开(公告)号：US20090114470A1
公开(公告)日：2009-05-07
申请号：US12290882
申请日：2008-11-04
IPC分类号： B62D5/04
CPC分类号： B62D1/16 , B62D5/04 , B62D5/0469
摘要： An electric power steering device is configured to transmit an auxiliary torque to a steering unit of front wheels, and includes: an operator; an electric motor configured to generate the auxiliary torque in accordance with at least a steering torque generated by input from the operator; the steering unit of front wheels which includes a pinion shaft; and a rotation terminating mechanism which provides a motion terminating end of the operator, the rotation terminating mechanism being disposed between the operator and the pinion shaft.
摘要翻译： 电动助力转向装置被配置为向前轮的转向单元传递辅助转矩，并且包括：操作者; 电动机，被配置为根据至少由操作者的输入产生的转向转矩产生辅助转矩; 前轮的转向单元包括小齿轮轴; 以及旋转终止机构，其提供操作者的运动终止端，旋转终止机构设置在操作者和小齿轮轴之间。
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4.发明授权Magnetostrictive torque sensor and electric power steering apparatus including the same 失效磁致伸缩转矩传感器和包括其的电动助力转向装置公开(公告)号：US06422095B1
公开(公告)日：2002-07-23
申请号：US09696653
申请日：2000-10-25
申请人： Yasuo Shimizu , Yasuharu Ohyama , Katsuji Watanabe , Shigeru Yamawaki , Atsuhiko Yoneda , Yasuhiro Terada
发明人： Yasuo Shimizu , Yasuharu Ohyama , Katsuji Watanabe , Shigeru Yamawaki , Atsuhiko Yoneda , Yasuhiro Terada
IPC分类号： G01L302
摘要： A magnetostrictive torque sensor includes a magnetostrictive film of width W provided along a circumference of a rotational shaft. The film causes magnetostriction in correspondence to a torque applied to the rotational shaft. The torque sensor also includes excitation and detection cores each having substantially U-shaped configuration. These cores are disposed in opposed relation to the film. The excitation core extends through an excitation coil while the detection core extends through a detection coil. The excitation core is disposed on the detection core at right angles. The film has a magnetic path passing therethrough. The magnetic path, the excitation coil, and the detection coil cooperate with each other to provide a magnetic circuit. The excitation coil and the detection coil provides a bridge circuit in cooperation with each other. When a torque is applied to the rotational shaft, the film causes magnetostriction in correspondence to the torque. The magnetostriction is electrically detected by the bridge circuit.
摘要翻译： 磁致伸缩扭矩传感器包括沿旋转轴的圆周设置的宽度为W的磁致伸缩膜。 该膜根据施加到旋转轴的扭矩而引起磁致伸缩。 扭矩传感器还包括各自具有大致U形构造的激励和检测芯。 这些芯与薄膜相对设置。 激励芯延伸穿过励磁线圈，同时检测芯延伸穿过检测线圈。 激励芯以直角设置在检测芯上。 该胶片具有穿过其中的磁路。 磁路，励磁线圈和检测线圈相互配合以提供磁路。 励磁线圈和检测线圈彼此配合提供桥接电路。 当转矩施加到旋转轴时，膜对应于扭矩引起磁致伸缩。 磁致伸缩由电桥电路电检测。
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公开(公告)号：US08042818B2
公开(公告)日：2011-10-25
申请号：US12397006
申请日：2009-03-03
CPC分类号： B60G17/06 , B60G17/021 , B60G2202/25 , B60G2202/42 , B60G2400/204 , B60G2400/252 , B60G2500/104 , F16F2232/04
摘要： An electric damper which does not transmit unbalance wheel vibration to a vehicle body is provided. A low-pass cutoff frequency setting unit and a high-pass cutoff frequency setting unit respectively set the cutoff frequencies for band-stop filters to a frequency band corresponding to unbalance wheel vibration based on a signal indicating a vehicle speed from a vehicle speed sensor, and a function as a band-stop filter comprising a low-pass filter computation unit, a high-pass filter computation unit and an adder is computed for a displacement rate of the vertical motion of a wheel calculated by a differentiating unit in a damper control unit. A damper control amount computation unit calculates a control amount of controlling an electric motor for a motor-driven damper based on the calculated filtered displacement rate, and outputs a control signal to a motor driving unit through a driving circuit output unit.
摘要翻译： 提供了不向车身传递不平衡的车轮振动的电动阻尼器。 低通截止频率设定单元和高通截止频率设定单元基于来自车速传感器的表示车速的信号，将带阻滤波器的截止频率分别设定为与不平衡车轮振动对应的频带， 并且计算包括低通滤波器计算单元，高通滤波器计算单元和加法器的带阻滤波器的功能，用于由减振器控制中的微分单元计算的车轮的垂直运动的位移速率 单元。 减振器控制量计算单元基于计算出的滤波位移率来计算控制电动马达的电动机的控制量，并通过驱动电路输出单元向马达驱动单元输出控制信号。
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公开(公告)号：US06390230B1
公开(公告)日：2002-05-21
申请号：US09679915
申请日：2000-10-05
申请人： Yasuo Shimizu , Yasuharu Ohyama , Katsuji Watanabe , Shigeru Yamawaki , Atsuhiko Yoneda , Yasuhiro Terada
发明人： Yasuo Shimizu , Yasuharu Ohyama , Katsuji Watanabe , Shigeru Yamawaki , Atsuhiko Yoneda , Yasuhiro Terada
IPC分类号： B62D312
CPC分类号： F16H55/26 , B21K1/767 , B62D3/123 , B62D3/126 , B62D5/0421 , F16H55/08 , F16H55/285 , Y10T74/1967
摘要： An electric power steering apparatus having a motor for producing assist torque according to the steering torque, and a rack and pinion mechanism for transferring torque assistance to the rack shaft. The pinion and rack of the rack and pinion mechanism are both helical gears, and transfer high torque to the rack shaft. The helical gears have a curved arc tooth profile. The teeth of a curved arc tooth profile gear set mesh with contact between convex and concave surfaces. The contact area is therefore increased and contact pressure is decreased compared with involute teeth. Surface fatigue strength, bending strength, and bending fatigue strength are thus greater compared with involute teeth. The combined steering torque and assist torque is efficiently transferred to the rack shaft, and durability is sufficient to withstand torque loads from motor inertia.
摘要翻译： 一种电动助力转向装置，具有根据转向转矩产生辅助转矩的电动机和用于将转矩辅助传递给齿条轴的齿条齿轮机构。 齿条和小齿轮机构的小齿轮和齿条都是斜齿轮，并将高扭矩传递到齿条轴。 螺旋齿轮具有弯曲的弧形齿廓。 弯曲弧齿轮齿轮组的齿与凸表面和凹面之间的接触啮合。 因此，与渐开线齿相比，接触面积增大，接触压力降低。 因此，与渐开线齿相比，表面疲劳强度，弯曲强度和弯曲疲劳强度更大。 组合的转向扭矩和辅助扭矩被有效地传递到齿条轴，并且耐久性足以承受来自电动机惯性的转矩负载。
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公开(公告)号：US08798862B2
公开(公告)日：2014-08-05
申请号：US13510874
申请日：2010-11-16
IPC分类号： B62D6/08
CPC分类号： B62D5/0463 , B62D5/0466 , B62D6/008
摘要： An electric power steering device wherein mechanical friction is electrically provided. A steering torque value is detected by a steering torque sensor according to the operation of a steering wheel. An assist current value is calculated by an assist control section on the basis of the steering torque value. A target current value based on the assist current value is determined. For providing friction to the operation of the steering wheel, a friction control section and a friction torque value/current value conversion section generate a corrected steering torque value. A second corrected target current value is created by correcting a first corrected target current value by a friction current value. The corrected steering torque value is obtained by correcting the steering torque value by a friction torque value. The target current value is generated, resulting in a motor being subjected to driving control.
摘要翻译： 电动转向装置，其中电气地提供机械摩擦。 根据方向盘的操作，通过转向扭矩传感器检测转向转矩值。 辅助控制部根据转向转矩值计算辅助电流值。 确定基于辅助电流值的目标电流值。 为了对方向盘的操作提供摩擦，摩擦控制部分和摩擦转矩值/电流值转换部分产生校正后的转向转矩值。 通过用摩擦电流值校正第一校正目标电流值来创建第二校正目标电流值。 通过利用摩擦转矩值对转向转矩值进行修正来获得修正后的转向转矩值。 产生目标电流值，导致电动机受到驱动控制。
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公开(公告)号：US08556023B2
公开(公告)日：2013-10-15
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：US09387875B2
公开(公告)日：2016-07-12
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：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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