-
公开(公告)号：US07386930B2
公开(公告)日：2008-06-17
申请号：US11983085
申请日：2007-11-07
申请人： Yasuo Shimizu , Yoshito Nakamura , Shunichiro Sueyoshi , Nobuhiko Yoshimoto , Koji Kobayashi , Yuichi Fukuda , Mizuho Doi , Hitoshi Harada , Tomohiro Hoshi
发明人： Yasuo Shimizu , Yoshito Nakamura , Shunichiro Sueyoshi , Nobuhiko Yoshimoto , Koji Kobayashi , Yuichi Fukuda , Mizuho Doi , Hitoshi Harada , Tomohiro Hoshi
IPC分类号： H04R31/00
CPC分类号： G01L3/102 , G01L3/103 , Y10T29/49002 , Y10T29/49005 , Y10T29/4902 , Y10T29/49078 , Y10T29/49224
摘要： For forming an annular magnetostrictive coat on an outer peripheral surface of a rotational shaft associated with a magnetostrictive torque sensor, a magnetostrictive coat forming method comprises a step of fitting a cylindrical masking jig over the outer peripheral surface of the rotational shaft and securing the masking jig to the outer peripheral surface, a step of placing the rotational shaft in a plating tank to thereby form the magnetostrictive coat by plating on the outer peripheral surface, and a step of detaching the masking jig from the rotational shaft.
摘要翻译： 为了在与磁致伸缩扭矩传感器相关联的旋转轴的外周表面上形成环形磁致伸缩涂层，磁致伸缩涂层形成方法包括将圆柱形掩模夹具安装在旋转轴的外周表面上并固定掩模夹具 在外周面上设置将旋转轴配置在镀槽内，通过在外周面上电镀而形成磁致伸缩涂层的步骤，以及将掩模夹具与旋转轴分离的工序。
-
公开(公告)号：US06959781B2
公开(公告)日：2005-11-01
申请号：US10757328
申请日：2004-01-13
摘要： A rotational torque detection mechanism is provided, which includes a rotational shaft whose first end portion reaches outside the mechanism, a magnetostrictive membrane which is disposed on a surface of the rotational shaft and varies its magnetic permeability according to an amount and direction of rotational torque acting on the rotational shaft, an excitation circuit which is disposed to confront the rotational shaft so as to excite the magnetostrictive membrane and a detection circuit which is disposed to confront the rotational shaft so as to electrically detect a change of the magnetic permeability of the magnetostrictive membrane. In the rotational detection mechanism, the first end portion is adapted to be a free end and a second end portion of the rotational shaft is rotatably supported.
摘要翻译： 本发明提供一种旋转力矩检测机构，其具有第一端部到达机构外部的旋转轴，设置在旋转轴的表面上的磁致伸缩膜，根据旋转力矩的作用量和方向，改变其磁导率 在旋转轴上设置有激励电路，其被设置为面对旋转轴以激励磁致伸缩膜;以及检测电路，其布置成面对旋转轴，以便电检测磁致伸缩膜的磁导率的变化 。 在旋转检测机构中，第一端部适于作为自由端，旋转轴的第二端部被可旋转地支撑。
-
公开(公告)号：US5473539A
公开(公告)日：1995-12-05
申请号：US164884
申请日：1993-12-10
IPC分类号： B62D5/04
CPC分类号： B62D5/0463 , B62D5/0466
摘要： An electrically operated power steering apparatus in a motor vehicle has a steering system for steering the motor vehicle, a steering torque detector for detecting a manual steering torque applied to the steering system, and an electric motor for generating an assistive torque to be transmitted as a steering assistive force to the steering system. An actual assistive torque detector detects an actual assistive steering torque which is actually transmitted from the electric motor to the steering system. A controller has at least a target assistive torque generator for generating a target value for an assistive torque to be generated by the electric motor depending on the manual steering torque detected by the steering torque detector, and generates a control signal based on the difference between the actual assistive steering torque detected by the actual assistive torque detector and the target value generated by the target assistive torque generator. The electric motor is energized by a motor driver based on the control signal from the controller.
摘要翻译： 机动车辆中的电动动力转向装置具有用于转向机动车辆的转向系统，用于检测施加到转向系统的手动转向转矩的转向转矩检测器，以及用于产生将被作为转向系统传递的辅助转矩的电动机 转向辅助力转向系统。 实际的辅助转矩检测器检测实际的从电动机向转向系统发送的辅助转向转矩。 控制器至少具有目标辅助扭矩发生器，用于根据由转向转矩检测器检测到的手动转向转矩来产生由电动机产生的辅助转矩的目标值，并且基于该转向转矩检测器之间的差产生控制信号 由实际辅助转矩检测器检测到的实际辅助转向转矩和由目标辅助扭矩发生器产生的目标值。 基于来自控制器的控制信号，电动机由电动机驱动器通电。
-
公开(公告)号：US20070240522A1
公开(公告)日：2007-10-18
申请号：US11818071
申请日：2007-06-13
IPC分类号： G01L3/10
摘要： A magnetostrictive torque sensor includes first and second magnetostrictive films which are provided at a shaft and have different magnetic anisotropies; a first measurement coil and a second measurement coil which face the first magnetostrictive film; and a third measurement coil and a fourth measurement coil which face the second magnetostrictive film. A torque applied to the shaft is measured based on a variation in magnetic characteristics of the first and the second magnetostrictive films; and a failure of the magnetostrictive torque sensor is detected based on a first difference between output values from the first and the second measurement coils and a second difference between output values from the third and the fourth measurement coils. An electric steering system includes the magnetostrictive torque sensor for measuring a steering torque of the system; and an electric motor driven based on the measured magnetostrictive torque for steering the vehicle.
摘要翻译： 磁致伸缩扭矩传感器包括第一和第二磁致伸缩膜，其设置在轴处并具有不同的磁各向异性; 面对第一磁致伸缩膜的第一测量线圈和第二测量线圈; 以及面对第二磁致伸缩膜的第三测量线圈和第四测量线圈。 基于第一和第二磁致伸缩膜的磁特性的变化来测量施加到轴的扭矩; 并且基于来自第一和第二测量线圈的输出值之间的第一差异和来自第三和第四测量线圈的输出值之间的第二差值来检测磁致伸缩扭矩传感器的故障。 电动转向系统包括用于测量系统的转向转矩的磁致伸缩扭矩传感器; 以及基于用于转向车辆的测量的磁致伸缩扭矩驱动的电动马达。
-
公开(公告)号：US6148948A
公开(公告)日：2000-11-21
申请号：US53205
申请日：1998-04-01
申请人： Yasuo Shimizu , Yoshito Nakamura
发明人： Yasuo Shimizu , Yoshito Nakamura
IPC分类号： B62D6/00 , B62D5/04 , B62D117/00 , B62D119/00
CPC分类号： B62D5/0463
摘要： An electric power steering apparatus, which has an electric motor incorporated in a steering system to provide steering power assist directly to the steering system to thereby reduce manual steering effort required by the driver, includes a steering torque differentiating section arranged to output a differential value of a component of the steering torque which is free from a near-dc component and a high frequency component, a motor control signal determining section for subtracting a value corresponding to the steering velocity from a value corresponding the steering torque and adding the value corresponding to the steering torque to a value corresponding to the differential value to thereby determine a motor control signal, and a motor drive section for driving the electric motor on the basis of the motor control signal. With this arrangement, the electric power steering apparatus can improve the response characteristics of the steering power assist system while preventing undue increase in the gain of the control system at low frequencies in the range of 2 to 4 Hz, for example.
摘要翻译： 一种电动助力转向装置，其具有并入转向系统中的电动马达，以直接向转向系统提供转向动力辅助，从而减少驾驶员所需的手动转向力，其包括：转向转矩微分部分， 转向转矩的分量，其不含近直流分量和高频分量;马达控制信号确定部分，用于从对应于转向转矩的值中减去与转向速度对应的值，并将与 转向扭矩达到与差速值对应的值，从而确定电动机控制信号;以及电动机驱动部分，用于根据电动机控制信号驱动电动机。 通过这种布置，电动助力转向装置可以改善转向助力系统的响应特性，同时防止例如在2至4Hz的范围内的低频处的控制系统的增益不适当增加。
-
公开(公告)号：US07506554B2
公开(公告)日：2009-03-24
申请号：US11818071
申请日：2007-06-13
IPC分类号： G01L3/00
摘要： A magnetostrictive torque sensor includes first and second magnetostrictive films which are provided at a shaft and have different magnetic anisotropies; a first measurement coil and a second measurement coil which face the first magnetostrictive film; and a third measurement coil and a fourth measurement coil which face the second magnetostrictive film. A torque applied to the shaft is measured based on a variation in magnetic characteristics of the first and the second magnetostrictive films; and a failure of the magnetostrictive torque sensor is detected based on a first difference between output values from the first and the second measurement coils and a second difference between output values from the third and the fourth measurement coils. An electric steering system includes the magnetostrictive torque sensor for measuring a steering torque of the system; and an electric motor driven based on the measured magnetostrictive torque for steering the vehicle.
摘要翻译： 磁致伸缩扭矩传感器包括第一和第二磁致伸缩膜，其设置在轴处并具有不同的磁各向异性; 面对第一磁致伸缩膜的第一测量线圈和第二测量线圈; 以及面对第二磁致伸缩膜的第三测量线圈和第四测量线圈。 基于第一和第二磁致伸缩膜的磁特性的变化来测量施加到轴的扭矩; 并且基于来自第一和第二测量线圈的输出值之间的第一差异和来自第三和第四测量线圈的输出值之间的第二差值来检测磁致伸缩扭矩传感器的故障。 电动转向系统包括用于测量系统的转向转矩的磁致伸缩扭矩传感器; 以及基于用于转向车辆的测量的磁致伸缩扭矩驱动的电动马达。
-
公开(公告)号：US5992557A
公开(公告)日：1999-11-30
申请号：US56730
申请日：1998-04-07
申请人： Yoshito Nakamura , Yasuo Shimizu
发明人： Yoshito Nakamura , Yasuo Shimizu
IPC分类号： B62D6/00 , B62D5/04 , B62D119/00
CPC分类号： B62D5/0463
摘要： An electric power steering apparatus includes a steering assist torque control system in which a steering torque signal is input and a motor speed signal is output. The control system includes a main control value setting section having a gain KTT and setting a target assist torque value corresponding to the steering torque, a differential-value correction value setting section having a gain KTD and setting a differential-value correction value corresponding to a differential steering torque value, a motor having an inertial efficiency JM and a counter electromotive force (induced voltage) constant KE, a motor drive section incorporated in a controlled object and having a proportional gain KP, a steering speed correction value setting section having a gain KTR and setting a steering speed correction value corresponding to the motor speed signal. The ratio of the gain KTD to the gain KTT is set to satisfy the condition: KTD/KTT>JM/{.alpha.(KP.multidot.KTR+KE)} where .alpha.=KT/(R+KP), R is the resistance (winding resistance) of the electric motor, and KT is the torque constant of the electric motor. With this arrangement, the phase of a gain of the steering assist torque control system is advanced, thereby improving the response characteristic to a level at least comparable to the manual steering mechanism.
摘要翻译： 电动助力转向装置包括输入转向转矩信号并输出电动机速度信号的转向辅助转矩控制系统。 控制系统包括具有增益KTT并设定与转向转矩对应的目标辅助转矩值的主控制值设定部，具有增益KTD的差分值修正值设定部，并且对应于 微分转向转矩值，具有惯性效率JM和反电动势（感应电压）常数KE的电动机，包含在受控对象中并具有比例增益KP的电动机驱动部分，具有增益的转向速度校正值设定部 KTR，并设定与电动机速度信号对应的转向速度校正值。 增益KTD与增益KTT的比率被设定为满足条件：KTD / KTT> JM / {α（KPxKTR + KE）}其中α= KT /（R + KP），R是电阻（绕组电阻） 的电动机，KT是电动机的转矩常数。 通过这种布置，转向辅助转矩控制系统的增益的相位提前，从而将响应特性提高到与手动转向机构至少相当的水平。
-
8.发明申请Magnetostrictive coat forming method, magnetostrictive torque sensor manufacturing method, and electric power steering apparatus employing the sensor 有权磁致伸缩涂层成形方法，磁致伸缩扭矩传感器制造方法以及使用该传感器的电动助力转向装置公开(公告)号：US20080066295A1
公开(公告)日：2008-03-20
申请号：US11983085
申请日：2007-11-07
申请人： Yasuo Shimizu , Yoshito Nakamura , Shunichiro Sueyoshi , Nobuhiko Yoshimoto , Koji Kobayashi , Yuichi Fukuda , Mizuho Doi , Hitoshi Harada , Tomohiro Hoshi
发明人： Yasuo Shimizu , Yoshito Nakamura , Shunichiro Sueyoshi , Nobuhiko Yoshimoto , Koji Kobayashi , Yuichi Fukuda , Mizuho Doi , Hitoshi Harada , Tomohiro Hoshi
CPC分类号： G01L3/102 , G01L3/103 , Y10T29/49002 , Y10T29/49005 , Y10T29/4902 , Y10T29/49078 , Y10T29/49224
摘要： For forming an annular magnetostrictive coat on an outer peripheral surface of a rotational shaft associated with a magnetostrictive torque sensor, a magnetostrictive-coat forming method comprises a step of fitting a cylindrical masking jig over the outer peripheral surface of the rotational shaft and securing the masking jig to the outer peripheral surface, a step of placing the rotational shaft in a plating tank to thereby form the magnetostrictive coat by plating on the outer peripheral surface, and a step of detaching the masking jig from the rotational shaft.
摘要翻译： 为了在与磁致伸缩扭矩传感器相关联的旋转轴的外周表面上形成环形磁致伸缩涂层，磁致伸缩涂层形成方法包括将圆柱形掩模夹具安装在旋转轴的外周表面上并确保掩模 夹具到外周面，将旋转轴放置在镀槽中，由此通过在外周面上电镀形成磁致伸缩涂层的步骤，以及将掩模夹具从旋转轴上分离的步骤。
-
公开(公告)号：US07013741B2
公开(公告)日：2006-03-21
申请号：US10796452
申请日：2004-03-09
IPC分类号： G01L3/02
摘要： A magnetostriction-type torque sensor 20 includes a shaft 12b formed of a magnetic material and provided with at least magnetostrictive films 20b and 20c; exciting coils 20d′ and 20e′ for exciting the magnetostrictive films 20b and 20c provided on the shaft 12b; detection coils 20d and 20e for detecting a change in a magnetic field; and yoke portions 20f respectively provided around outer peripheries of the exciting coils 20d′ and 20e′ and the detection coils 20d and 20e, wherein a magnetic shield section 20a formed of a magnetic material is provided around the outer peripheries of the yoke portions 20f.
摘要翻译： 磁致伸缩式扭矩传感器20包括由磁性材料形成并至少设置有磁致伸缩膜20b和20c的轴12b; 励磁线圈20d'和20e'用于激励设置在轴12b上的磁致伸缩膜20b和20c; 用于检测磁场变化的检测线圈20d和20e; 以及分别设置在励磁线圈20d'和20e'以及检测线圈20d和20e的外周的轭部20f，其中由磁性材料形成的磁屏蔽部分20a设置在 轭部20f。
-
公开(公告)号：US5729107A
公开(公告)日：1998-03-17
申请号：US704968
申请日：1996-08-28
申请人： Yasuo Shimizu , Yoshito Nakamura
发明人： Yasuo Shimizu , Yoshito Nakamura
CPC分类号： B62D5/0466 , B62D6/008
摘要： In a control device for an electric actuator of a steering system of a vehicle, the amount of power assist provided by the electric actuator of the steering system is appropriately diminished when the steering wheel is turned more than appropriate under the given road condition so that the effort to turn the steering wheel may not be excessively reduced even on a slippery road surface. Thus, when the vehicle is steered more than appropriate for a given road condition, the steering effort is increased by reducing the power assist of the steering system, whereby the vehicle operator is prevented from excessively steering the vehicle. This increase in the steering effort occurs only when the vehicle operator attempts to increase the steering angle, and does not affect the tendency of the steering wheel to return to its neutral position.
摘要翻译： 在用于车辆的转向系统的电致动器的控制装置中，当在给定的道路条件下方向盘转动得更合适时，由转向系统的电致动器提供的动力辅助量适当减小， 即使在路面滑溜的情况下，转向方向盘的努力也不会过分减少。 因此，当车辆在给定的道路状况下被转向超过适当时，通过减少转向系统的动力辅助来提高转向力，由此防止车辆操作者过度地转向车辆。 只有当车辆操作者试图提高转向角度时，转向力的增加才会发生，并且不影响方向盘返回其中立位置的趋势。
-
-
-
-
-
-
-
-
-
搜索结果
345 条记录 (耗时 0.033 秒)
