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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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2.发明申请Method for manufacturing magnetostrictive torque sensor device, and electric power steering apparatus 有权磁致伸缩扭矩传感器装置的制造方法以及电动助力转向装置公开(公告)号：US20080053250A1
公开(公告)日：2008-03-06
申请号：US11896222
申请日：2007-08-30
申请人： Atsuhiko Yoneda , Yasuo Shimizu , Hisao Asaumi , Yutaka Arimura
发明人： Atsuhiko Yoneda , Yasuo Shimizu , Hisao Asaumi , Yutaka Arimura
CPC分类号： G01L5/221 , G01L3/102 , G01L3/103 , Y10T29/4902 , Y10T29/49885 , Y10T29/49982
摘要： A method for manufacturing a magnetostrictive torque sensor device includes the steps of: providing a steering shaft or another such rotating shaft with two magnetostrictive parts endowed with magnetic anisotropy; disposing detection coils around the magnetostrictive parts to detect changes in magnetostrictive characteristics of the magnetostrictive parts; providing a detection circuit for bringing out detection signals from signals outputted from the detection coils; and adjusting a gain of a gain adjuster included in the detection circuit.
摘要翻译： 一种用于制造磁致伸缩扭矩传感器装置的方法包括以下步骤：为转向轴或另一转轴提供具有磁各向异性的两个磁致伸缩部件; 在磁致伸缩部件周围设置检测线圈，以检测磁致伸缩部件的磁致伸缩特性的变化; 提供检测电路，用于从检测线圈输出的信号中输出检测信号; 以及调整包括在检测电路中的增益调节器的增益。
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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：US20120018241A1
公开(公告)日：2012-01-26
申请号：US13258046
申请日：2010-03-31
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：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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6.发明授权公开(公告)号：US08584533B2
公开(公告)日：2013-11-19
申请号：US12380619
申请日：2009-03-02
申请人： Takashi Miyoshi , Yoshihiro Oniwa , Yasuo Shimizu , Atsuhiko Yoneda , Yutaka Arimura , Katsuji Watanabe
发明人： Takashi Miyoshi , Yoshihiro Oniwa , Yasuo Shimizu , Atsuhiko Yoneda , Yutaka Arimura , Katsuji Watanabe
摘要： A magnetostrictive torque sensor device which detects a torque applied to a rotary shaft is provided. The magnetostrictive torque sensor device includes a magnetostrictive portion provided on a surface of the rotary shaft, a coil and a cylindrical back-yoke disposed in outer periphery of the coil. The coil includes a bobbin arranged in outer periphery of the magnetostrictive portion, and a wire wound around the bobbin. A slit is provided on the back-yoke.
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7.发明申请Magnetostrictive torque sensor device, manufacturing method thereof, and vehicle steering apparatus 有权磁致伸缩扭矩传感器装置及其制造方法以及车辆转向装置公开(公告)号：US20090218162A1
公开(公告)日：2009-09-03
申请号：US12380619
申请日：2009-03-02
申请人： Takashi Miyoshi , Yoshihiro Oniwa , Yasuo Shimizu , Atsuhiko Yoneda , Yutaka Arimura , Katsuji Watanabe
发明人： Takashi Miyoshi , Yoshihiro Oniwa , Yasuo Shimizu , Atsuhiko Yoneda , Yutaka Arimura , Katsuji Watanabe
摘要： A magnetostrictive torque sensor device which detects a torque applied to a rotary shaft is provided. The magnetostrictive torque sensor device includes a magnetostrictive portion provided on a surface of the rotary shaft, a coil and a cylindrical back-yoke disposed in outer periphery of the coil. The coil includes a bobbin arranged in outer periphery of the magnetostrictive portion, and a wire wound around the bobbin. A slit is provided on the back-yoke.
摘要翻译： 提供一种检测施加到旋转轴的转矩的磁致伸缩扭矩传感器装置。 磁致伸缩扭矩传感器装置包括设置在旋转轴的表面上的磁致伸缩部分，设置在线圈外周的线圈和圆柱形后轭。 线圈包括布置在磁致伸缩部分的外周中的线轴和缠绕在线轴上的线。 在后轭上设置狭缝。
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公开(公告)号：US06838844B2
公开(公告)日：2005-01-04
申请号：US10313600
申请日：2002-12-05
申请人： Yasuo Shimizu , Atsuhiko Yoneda , Yutaka Arimura
发明人： Yasuo Shimizu , Atsuhiko Yoneda , Yutaka Arimura
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D119/00 , H02P6/16 , H02P21/00 , H02P27/04 , H02P1/40 , H02P1/22
CPC分类号： B62D5/046
摘要： An electric power steering apparatus includes a steering torque detector, a brushless motor PWM-driven with a three-phase alternating motor current, a target current setting section for setting a d-axis target current value and a q-axis target current value, motor current detectors for detecting motor current values supplied to the brushless motor, a three-phase AC/d-q coordinate transformation circuit, a first deviation calculation circuit for calculating a deviation of a current value of a q-axis detection signal from the q-axis target current value, a second deviation calculation circuit for calculating a deviation of a direct current value a d-axis detection current signal from the d-axis target current, a motor control section for controlling driving of the brushless motor through a vector control process on the basis of deviation signals outputted from the first and second deviation calculation circuits, and an attenuation device provided in a feedback transmission path of the q-axis detection current signal for attenuating a high frequency noise mixed in the q-axis detection current signal.
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9.发明授权Method for manufacturing magnetostrictive torque sensor device, and electric power steering apparatus 有权磁致伸缩扭矩传感器装置的制造方法以及电动助力转向装置公开(公告)号：US07568274B2
公开(公告)日：2009-08-04
申请号：US11896222
申请日：2007-08-30
申请人： Atsuhiko Yoneda , Yasuo Shimizu , Hisao Asaumi , Yutaka Arimura
发明人： Atsuhiko Yoneda , Yasuo Shimizu , Hisao Asaumi , Yutaka Arimura
IPC分类号： B23P25/00
CPC分类号： G01L5/221 , G01L3/102 , G01L3/103 , Y10T29/4902 , Y10T29/49885 , Y10T29/49982
摘要： A method for manufacturing a magnetostrictive torque sensor device includes the steps of: providing a steering shaft or another such rotating shaft with two magnetostrictive parts endowed with magnetic anisotropy; disposing detection coils around the magnetostrictive parts to detect changes in magnetostrictive characteristics of the magnetostrictive parts; providing a detection circuit for bringing out detection signals from signals outputted from the detection coils; and adjusting a gain of a gain adjuster included in the detection circuit.
摘要翻译： 一种用于制造磁致伸缩扭矩传感器装置的方法包括以下步骤：为转向轴或另一转轴提供具有磁各向异性的两个磁致伸缩部件; 在磁致伸缩部件周围设置检测线圈，以检测磁致伸缩部件的磁致伸缩特性的变化; 提供检测电路，用于从检测线圈输出的信号中提取检测信号; 以及调整包括在检测电路中的增益调节器的增益。
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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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