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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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3.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。
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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。
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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。
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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。
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7.发明授权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：US07621368B2
公开(公告)日：2009-11-24
申请号：US11983153
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： G01L3/02
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。
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公开(公告)号：US20080257635A1
公开(公告)日：2008-10-23
申请号：US11983153
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： B62D5/04
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.
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9.发明授权Method for forming an annular magnetostrictive coat on an outer peripheral surface of a rotational shaft of magnetostrictive torque sensor 有权在磁致伸缩扭矩传感器的旋转轴的外周面上形成环状磁致伸缩涂层的方法公开(公告)号：US07310870B2
公开(公告)日：2007-12-25
申请号：US10844824
申请日：2004-05-12
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。
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公开(公告)号：US20060042404A1
公开(公告)日：2006-03-02
申请号：US11199914
申请日：2005-08-09
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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