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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。
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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。
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公开(公告)号：US20070283768A1
公开(公告)日：2007-12-13
申请号：US11723071
申请日：2007-03-16
申请人： Atsuhiko Yoneda , Yasuo Shimizu , Shunichiro Sueyoshi , Yoshihiro Oniwa , Yutaka Arimura , Takashi Miyoshi
发明人： Atsuhiko Yoneda , Yasuo Shimizu , Shunichiro Sueyoshi , Yoshihiro Oniwa , Yutaka Arimura , Takashi Miyoshi
IPC分类号： G01L3/00
摘要： A magnetostriction type torque sensor is provided which includes magnetic property change material which is provided on a shaft and whose magnetic property changes in accordance with torque applied to the shaft, an excitation signal generator which generates an excitation signal whose voltage is converted into a predetermined voltage through a switching element, a plurality of detection coils to which the excitation signal generator applies the excitation signal, and which plurality of detection coils outputs voltage, which changes in accordance with change in the magnetic property of the magnetic property change material, between connection points between the detection coils, and an operational state monitor which monitors an operational state of the switching element.
摘要翻译： 提供一种磁致伸缩式转矩传感器，其包括设置在轴上并且其磁特性根据施加到轴的扭矩而变化的磁性变化材料，产生其电压被转换为预定电压的激励信号的激励信号发生器 通过开关元件，激励信号发生器施加激励信号的多个检测线圈，以及多个检测线圈输出根据磁性能改变材料的磁特性的变化在连接点之间变化的电压 在检测线圈之间，以及操作状态监视器，其监视开关元件的工作状态。
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公开(公告)号：US07640815B2
公开(公告)日：2010-01-05
申请号：US11723071
申请日：2007-03-16
申请人： Atsuhiko Yoneda , Yasuo Shimizu , Shunichiro Sueyoshi , Yoshihiro Oniwa , Yutaka Arimura , Takashi Miyoshi
发明人： Atsuhiko Yoneda , Yasuo Shimizu , Shunichiro Sueyoshi , Yoshihiro Oniwa , Yutaka Arimura , Takashi Miyoshi
IPC分类号： G01L3/00
摘要： A magnetostriction type torque sensor is provided which includes magnetic property change material which is provided on a shaft and whose magnetic property changes in accordance with torque applied to the shaft, an excitation signal generator which generates an excitation signal whose voltage is converted into a predetermined voltage through a switching element, a plurality of detection coils to which the excitation signal generator applies the excitation signal, and which plurality of detection coils outputs voltage, which changes in accordance with change in the magnetic property of the magnetic property change material, between connection points between the detection coils, and an operational state monitor which monitors an operational state of the switching element.
摘要翻译： 提供一种磁致伸缩式转矩传感器，其包括设置在轴上并且其磁特性根据施加到轴的扭矩而变化的磁性变化材料，产生其电压被转换为预定电压的激励信号的激励信号发生器 通过开关元件，激励信号发生器施加激励信号的多个检测线圈，以及多个检测线圈输出根据磁性能改变材料的磁特性的变化在连接点之间变化的电压 在检测线圈之间，以及操作状态监视器，其监视开关元件的工作状态。
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5.发明授权Magnetostrictive torque sensor system and electric power steering apparatus employing the same 有权磁致伸缩转矩传感器系统和采用该方法的电动助力转向装置公开(公告)号：US07478568B2
公开(公告)日：2009-01-20
申请号：US11727934
申请日：2007-03-29
IPC分类号： G01L3/00
摘要： A magnetostrictive torque sensor system stabilizes and detects steering torque applied to a steering shaft. The sensor system comprises magnetic-characteristic variation parts that are provided to the steering shaft, wherein magnetic characteristics of the magnetic-characteristic variation parts change in accordance with the applied torque; coils that are positioned around the magnetic-characteristic variation parts and that respond to changes in the magnetic characteristics; resistance elements that are serially connected to the coils; voltage-applying means for periodically applying a voltage to serial circuits that are formed from the coils and the resistance elements; terminals for retrieving changes in the terminal voltage of the coils; phase-shifting means for inverting the phase of the change in the terminal voltage of the coils; selecting means for alternatingly selecting and outputting the voltage change in the terminals and the voltage change in the output ends of the phase-shifting means; and smoothing means for smoothing the voltage signals output from the selecting means and for outputting a direct-current voltage.
摘要翻译： 磁致伸缩扭矩传感器系统稳定并检测施加到转向轴的转向扭矩。 传感器系统包括提供给转向轴的磁特性变化部分，其中磁特性变化部分的磁特性根据施加的转矩而改变; 线圈位于磁特性变化部分周围，并响应于磁特性的变化; 串联连接到线圈的电阻元件; 电压施加装置，用于对由线圈和电阻元件形成的串联电路周期性地施加电压; 用于检索线圈的端子电压变化的端子; 用于使所述线圈的端子电压变化的相位反相的相移装置; 选择装置，用于交替选择和输出端子中的电压变化和相移装置的输出端中的电压变化; 以及平滑装置，用于平滑从选择装置输出的电压信号并输出直流电压。
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6.发明申请Magnetostrictive torque sensor system and electric power steering apparatus employing the same 有权磁致伸缩转矩传感器系统和采用该方法的电动助力转向装置公开(公告)号：US20070240523A1
公开(公告)日：2007-10-18
申请号：US11727934
申请日：2007-03-29
IPC分类号： G01L3/00
摘要： A magnetostrictive torque sensor system stabilizes and detects steering torque applied to a steering shaft. The sensor system comprises magnetic-characteristic variation parts that are provided to the steering shaft, wherein magnetic characteristics of the magnetic-characteristic variation parts change in accordance with the applied torque; coils that are positioned around the magnetic-characteristic variation parts and that respond to changes in the magnetic characteristics; resistance elements that are serially connected to the coils; voltage-applying means for periodically applying a voltage to serial circuits that are formed from the coils and the resistance elements; terminals for retrieving changes in the terminal voltage of the coils; phase-shifting means for inverting the phase of the change in the terminal voltage of the coils; selecting means for alternatingly selecting and outputting the voltage change in the terminals and the voltage change in the output ends of the phase-shifting means; and smoothing means for smoothing the voltage signals output from the selecting means and for outputting a direct-current voltage.
摘要翻译： 磁致伸缩扭矩传感器系统稳定并检测施加到转向轴的转向扭矩。 传感器系统包括提供给转向轴的磁特性变化部分，其中磁特性变化部分的磁特性根据施加的转矩而改变; 线圈位于磁特性变化部分周围，并响应于磁特性的变化; 串联连接到线圈的电阻元件; 电压施加装置，用于对由线圈和电阻元件形成的串联电路周期性地施加电压; 用于检索线圈的端子电压变化的端子; 用于使所述线圈的端子电压变化的相位反相的相移装置; 选择装置，用于交替选择和输出端子中的电压变化和相移装置的输出端中的电压变化; 以及平滑装置，用于平滑从选择装置输出的电压信号并输出直流电压。
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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：US08701503B2
公开(公告)日：2014-04-22
申请号：US13258046
申请日：2010-03-31
IPC分类号： G01L3/02
摘要： Disclosed are a magnetostrictive torque sensor and an electrical power steering device, wherein a first torque sensor has: one magnetostrictive film provided on a steering shaft; a first coil and a second coil that detect changes in the magnetic characteristics of the magnetostrictive film; and a first housing that contains, at least, the steering shaft, the magnetostrictive film, the first coil, and the second coil. The first housing has a resin part, a cylindrical part made of a metal that is soft magnetic, and a flange part made of a metal that is soft magnetic. The resin part, the cylindrical part, and the flange part are formed as a unit.
摘要翻译： 公开了一种磁致伸缩扭矩传感器和电动助力转向装置，其中第一扭矩传感器具有：设置在转向轴上的一个磁致伸缩膜; 第一线圈和第二线圈，其检测所述磁致伸缩膜的磁特性的变化; 以及至少包含转向轴，磁致伸缩膜，第一线圈和第二线圈的第一壳体。 第一壳体具有树脂部分，由软磁体制成的圆柱形部分和由软磁体制成的金属制成的凸缘部分。 树脂部分，圆柱形部分和凸缘部分形成为一个单元。
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公开(公告)号：US08294311B2
公开(公告)日：2012-10-23
申请号：US11714158
申请日：2007-03-06
申请人： Takashi Miyoshi , Yasuo Shimizu , Atsuhiko Yoneda , Katsuhiro Saito , Ryoji Toyofuku , Katsuji Watanabe
发明人： Takashi Miyoshi , Yasuo Shimizu , Atsuhiko Yoneda , Katsuhiro Saito , Ryoji Toyofuku , Katsuji Watanabe
CPC分类号： F16C35/067 , F16C2380/27 , H02K5/1732 , H02K7/081 , H02K7/1166 , H02K29/12 , Y10T74/19828
摘要： An electric motor having a rotation shaft includes a motor housing into which the electric motor is accommodated, at least one pair of rolling bearings positioned in the motor housing and rotatably supporting both ends of the rotation shaft, and a displacement restriction member provided inside the motor housing and restricting a displacement of the rolling bearing in an axial direction of the rolling bearing. Each rolling bearing includes an inner race, an outer race, and rolling elements rotatably supported between the inner race and the outer race. The inner race is press fitted without any gaps onto an outer peripheral surface of the rotation shaft, and the outer race is press fitted without any gaps into a bearing attachment portion provided inside the motor housing.
摘要翻译： 具有旋转轴的电动机包括容纳电动机的电动机壳体，位于电动机壳体中的至少一对滚动轴承和可旋转地支撑旋转轴的两端的旋转轴承，以及设置在电动机内部的位移限制部件 容纳并限制滚动轴承在滚动轴承的轴向上的位移。 每个滚动轴承包括内圈，外圈和可旋转地支撑在内圈和外圈之间的滚动元件。 内圈在旋转轴的外周面上没有任何间隙地压配合，并且外圈没有间隙地压配合到设置在电动机壳体内部的轴承安装部分中。
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公开(公告)号：US20120233860A1
公开(公告)日：2012-09-20
申请号：US13514258
申请日：2010-08-27
申请人： Atsuhiko Yoneda , Yasuo Shimizu
发明人： Atsuhiko Yoneda , Yasuo Shimizu
IPC分类号： B23P15/14
CPC分类号： B62D5/0421 , B62D5/0409 , Y10T29/49464
摘要： Disclosed is a method of manufacturing a motorized power steering device wherein auxiliary torque generated by an electric motor (43) is added to a rotation shaft (24) via a speed reduction mechanism (44). This manufacturing method comprises a shaft mounting process wherein the rotation shaft (24) is rotatably mounted in a housing (51), and a speed reduction mechanism installing process wherein subsequent to the mounting of the shaft, the speed reduction mechanism (44) is installed on the rotation shaft (24).
摘要翻译： 公开了一种制造电动动力转向装置的方法，其中通过减速机构（44）将由电动机（43）产生的辅助转矩加到旋转轴（24）上。 该制造方法包括轴安装过程，其中旋转轴（24）可旋转地安装在壳体（51）中，以及减速机构安装过程，其中在安装轴之后，安装减速机构（44） 在旋转轴（24）上。
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