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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：US08326489B2
公开(公告)日：2012-12-04
申请号：US12617293
申请日：2009-11-12
CPC分类号： B62D6/008 , B62D5/0463 , B62D5/0466
摘要： The present invention discloses a controller of an electric power-assist steering system including a torque detector for detecting a torque applied with a steering wheel that steers a steering system; a steering status determining section for determining a steering status of either “turn” or “return” of a steering wheel; and a motor controlling unit for driving a motor in accordance with a target current value calculated based on at least a torque value from the torque detector and the steering status of either “turn” or “return” of the steering wheel from the steering status determining section, wherein the motor controlling unit sets a target current value right after a time when the steering status is switched between “turn” and “return” to be substantially equal to an actual current value right before a time when the steering status is switched between “turn” and “return”.
摘要翻译： 本发明公开了一种电动助力转向系统的控制器，其包括转矩检测器，用于检测用转向系统转向的方向盘施加的转矩; 用于确定方向盘的转向或返回的转向状态的转向状态确定部分; 以及电动机控制单元，用于根据来自转矩检测器的至少一个转矩值计算的目标电流值和来自转向状态确定部分的方向盘转向或返回的转向状态来驱动电动机，其中， 马达控制单元在转向和返回之间切换转向状态的时间之后立即设定目标电流值，使其大致等于在转向和返回之间切换转向状态的时刻之前的实际当前值。
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公开(公告)号：US20120232759A1
公开(公告)日：2012-09-13
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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4.发明授权Electric steering system for rapidly increasing damper gain after steering speed exceeds a specific value 有权用于在转向速度之后快速增加阻尼器增益的电动转向系统超过特定值公开(公告)号：US07937200B2
公开(公告)日：2011-05-03
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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5.发明授权Electric steering system for rapidly increasing damper gain after steering speed exceeds a specific value 有权用于在转向速度之后快速增加阻尼器增益的电动转向系统超过特定值公开(公告)号：US07793754B2
公开(公告)日：2010-09-14
申请号：US11258479
申请日：2005-10-25
CPC分类号： B62D5/0469
摘要： An electric steering system includes a device for measuring a steering input into a steering system; a device for measuring a steering speed; a section for computing a target current based on the steering input; and a control section for applying a steering power to the steering system by driving a motor according to the target current, and applying damping to the steering system based on the steering speed. A rate of increase in a damper gain defined when the steering speed is equal to or greater than a predetermined value is higher than that defined when the steering speed is less than the predetermined value, or the damper gain defined when the steering speed is equal to or greater than a predetermined value has a constant value increased in a step form from values of the damper gain defined when the steering speed is less than the predetermined value.
摘要翻译： 电动转向系统包括用于测量转向系统中的转向输入的装置; 用于测量转向速度的装置; 用于基于所述转向输入来计算目标电流的部分; 以及控制部，其通过根据目标电流驱动电动机将转向动力施加到转向系统，并且基于转向速度对转向系统施加阻尼。 当转向速度等于或大于预定值时确定的阻尼器增益的增加率高于当转向速度小于预定值时限定的阻尼器增益的增加率，或者当转向速度等于 或大于预定值时，具有从转向速度小于预定值时限定的阻尼器增益的值以阶梯形式增加的常数值。
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公开(公告)号：US20100121531A1
公开(公告)日：2010-05-13
申请号：US12617293
申请日：2009-11-12
CPC分类号： B62D6/008 , B62D5/0463 , B62D5/0466
摘要： The present invention discloses a controller of an electric power-assist steering system including a torque detector for detecting a torque applied with a steering wheel that steers a steering system; a steering status determining section for determining a steering status of either “turn” or “return” of a steering wheel; and a motor controlling unit for driving a motor n accordance with a target current value calculated based on at least a torque value from the torque detector and the steering status of either “turn” or “return” of the steering wheel from the steering status determining section, wherein the motor controlling unit sets a target current value right after a time when the steering status is switched between “turn” and “return” to be substantially equal to an actual current value right before a time when the steering status is switched between “turn” and “return”.
摘要翻译： 本发明公开了一种电动助力转向系统的控制器，其包括转矩检测器，用于检测用转向系统转向的方向盘施加的转矩; 用于确定方向盘的“转弯”或“返回”的转向状态的转向状态确定部分; 以及电动机控制单元，用于根据来自转矩检测器的至少一个转矩值计算的目标电流值和方向盘的“转动”或“返回”的转向状态从转向状态确定 其中所述电动机控制单元在所述转向状态在“转动”和“返回”之间切换的时间之后立即设定目标电流值，使其基本上等于在所述转向状态被切换之前的实际当前值 “转”和“回”。
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7.发明申请Electric steering system for rapidly increasing damper gain after steering speed exceeds a specific value 有权用于在转向速度之后快速增加阻尼器增益的电动转向系统超过特定值公开(公告)号：US20060090953A1
公开(公告)日：2006-05-04
申请号：US11258479
申请日：2005-10-25
IPC分类号： B62D5/04
CPC分类号： B62D5/0469
摘要： An electric steering system includes a device for measuring a steering input into a steering system; a device for measuring a steering speed; a section for computing a target current based on the steering input; and a control section for applying a steering power to the steering system by driving a motor according to the target current, and applying damping to the steering system based on the steering speed. A rate of increase in a damper gain defined when the steering speed is equal to or greater than a predetermined value is higher than that defined when the steering speed is less than the predetermined value, or the damper gain defined when the steering speed is equal to or greater than a predetermined value has a constant value increased in a step form from values of the damper gain defined when the steering speed is less than the predetermined value.
摘要翻译： 电动转向系统包括用于测量转向系统中的转向输入的装置; 用于测量转向速度的装置; 用于基于所述转向输入来计算目标电流的部分; 以及控制部，其通过根据目标电流驱动电动机将转向动力施加到转向系统，并且基于转向速度对转向系统施加阻尼。 当转向速度等于或大于预定值时确定的阻尼器增益的增加率高于当转向速度小于预定值时限定的阻尼器增益的增加率，或者当转向速度等于 或大于预定值时，具有从转向速度小于预定值时限定的阻尼器增益的值以阶梯形式增加的常数值。
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公开(公告)号：US06184637B2
公开(公告)日：2001-02-06
申请号：US09413091
申请日：1999-09-30
申请人： Shigeru Yamawaki , Yasuo Shimizu
发明人： Shigeru Yamawaki , Yasuo Shimizu
IPC分类号： B62D600
CPC分类号： B62D5/0466
摘要： Electric power steering apparatus includes a control nit for controlling an electric motor to impart electric steering assist torque to the steering system of an automotive vehicle. The control unit is provided with a non-steady state detector section that generates a modification signal when it detects a non-steady state of the vehicle in which the steering wheel is turned to an excessive extent. Target motor current signal, which acts to impart the electric steering assist torque corresponding to manual steering torque, is modified by the control unit in accordance with the modification signal generated by the non-steady state detector section. Thus, the tire-to-steering-wheel torque is assisted in a returning direction of the steering wheel, so that the steering wheel is allowed to return to its center position at an increased speed.
摘要翻译： 电动助力转向装置包括用于控制电动机以向汽车的转向系统赋予电动转向辅助转矩的控制装置。 控制单元设置有非稳态检测器部，其在检测到方向盘转向其中的车辆的非稳定状态时产生修正信号。 用于赋予与手动转向转矩对应的电动转向辅助转矩的目标电动机电流信号由控制单元根据由非稳态检测器部产生的修正信号进行修正。 因此，在方向盘的返回方向上辅助轮胎对方向盘的扭矩，使得方向盘以增加的速度被允许返回到其中心位置。
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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：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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