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1. 发明授权

US08294311B2 Electric motor and electric power steering apparatus 失效
标题翻译：电动马达和电动助力转向装置
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
IPC分类号： H02K5/16 , H02K7/08 , H02K7/06 , H02K7/10
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。

2. 发明授权

US07938026B2 Magnetostrictive torque sensor and electric steering system 有权
标题翻译：磁致伸缩转矩传感器和电动转向系统
公开(公告)号：US07938026B2
公开(公告)日：2011-05-10
申请号：US12324024
申请日：2008-11-26
申请人： Yoshihiro Oniwa , Takashi Miyoshi , Koichi Fujita , Atsuhiko Yoneda , Yasuo Shimizu
发明人： Yoshihiro Oniwa , Takashi Miyoshi , Koichi Fujita , Atsuhiko Yoneda , Yasuo Shimizu
IPC分类号： G01L3/02
CPC分类号： G01L3/102 , B62D5/046 , B62D5/0481 , B62D5/049 , B62D6/10 , G01L3/105 , G01L5/221
摘要： A magnetostrictive torque sensor comprising: a magnetostrictive film provided on a ferromagnetic shaft; a bias magnetization device which applies a bias magnetic field to the shaft to magnetize the shaft; and a detection device which detects a change in magnetism of the magnetostrictive film, wherein: a torque acting on the shaft calculated based on the detection results of the detection device; and the bias magnetization device applies a bias magnetic field to the shaft at a predetermined timing.
摘要翻译：一种磁致伸缩扭矩传感器，包括：设在铁磁轴上的磁致伸缩膜; 偏置磁化装置，其向所述轴施加偏置磁场以使所述轴磁化; 以及检测装置，其检测所述磁致伸缩膜的磁性变化，其中：基于所述检测装置的检测结果计算的作用在所述轴上的转矩; 并且偏置磁化装置在预定的时刻向轴施加偏置磁场。

3. 发明申请

US20070283768A1 Magnetostriction type torque sensor 有权
标题翻译：磁致伸缩式扭矩传感器
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
CPC分类号： G01L3/102 , G01L3/105
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。

4. 发明授权

US07891461B2 Motor rotation angle detection device 有权
标题翻译：电机旋转角度检测装置
公开(公告)号：US07891461B2
公开(公告)日：2011-02-22
申请号：US12287266
申请日：2008-10-07
申请人： Takashi Miyoshi , Atsuhiko Yoneda , Yasuo Shimizu
发明人： Takashi Miyoshi , Atsuhiko Yoneda , Yasuo Shimizu
IPC分类号： B62D5/04 , G01B7/30
CPC分类号： B62D5/0409 , B62D15/0235 , H02K29/12
摘要： A motor rotation angle detection device includes a resolver which detects a rotation angle of a motor generating an assist torque for steering road wheels. The resolver includes an annular rotor disposed inside an annular stator with an air gap interposed in between an outer circumferential surface of the rotor and an inner circumferential surface of the stator, so that the stator and the rotor are rotatable relative to each other. A rotor supporting member is connected to a rotary shaft of the motor, and the rotor extends out from an axial end portion of the rotor supporting member so as to surround an outer periphery of the rotary shaft. With the described motor rotation angle detection device, it is possible to stabilize the magnetic permeability of the rotor, and accordingly to increase an accuracy with which the rotation angle of the motor is detected.
摘要翻译：电动机旋转角度检测装置包括检测产生用于转向车轮的辅助转矩的电动机的旋转角度的旋转变压器。旋转变压器包括设置在环形定子内部的环形转子，其中气隙插入在转子的外周表面和定子的内周表面之间，使得定子和转子可相对于彼此旋转。转子支承部件与马达的旋转轴连接，转子从转子支承部件的轴向端部延伸出来，以包围旋转轴的外周。利用所述的电动机旋转角度检测装置，可以使转子的磁导率稳定，从而提高检测电动机的旋转角度的精度。

5. 发明授权

US07640815B2 Magnetostriction type torque sensor 有权
标题翻译：磁致伸缩式扭矩传感器
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
CPC分类号： G01L3/102 , G01L3/105
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。

6. 发明申请

US20090266179A1 MAGNETOSTRICTIVE TORQUE SENSOR AND ELECTRIC POWER STEERING APPARATUS 有权
标题翻译：磁感应转矩传感器和电动转向装置
公开(公告)号：US20090266179A1
公开(公告)日：2009-10-29
申请号：US12406354
申请日：2009-03-18
申请人： Yoshihiro Oniwa , Takashi Miyoshi , Yasuo Shimizu , Atsuhiko Yoneda
发明人： Yoshihiro Oniwa , Takashi Miyoshi , Yasuo Shimizu , Atsuhiko Yoneda
IPC分类号： G01L3/10
CPC分类号： G01L3/102 , G01L5/221
摘要： A magnetostrictive torque sensor includes first and second magnetostrictive films mounted on a pinion shaft and having different magnetic anisotropic properties, a first detecting coil disposed in facing relation to the first magnetostrictive film, a second detecting coil disposed in facing relation to the second magnetostrictive film, a transistor, and a detector for detecting a torque applied to the pinion shaft based on a first detected signal representative of a potential at the junction between the first detecting coil and the second detecting coil.
摘要翻译：磁致伸缩扭矩传感器包括安装在小齿轮轴上并具有不同磁各向异性特性的第一和第二磁致伸缩膜，与第一磁致伸缩膜相对设置的第一检测线圈，与第二磁致伸缩膜相对设置的第二检测线圈，晶体管和检测器，用于基于表示第一检测线圈和第二检测线圈之间的接合处的电位的第一检测信号来检测施加到小齿轮轴的转矩。

7. 发明申请

US20070205680A1 Electric motor and electric power steering apparatus 失效
标题翻译：电动马达和电动助力转向装置
公开(公告)号：US20070205680A1
公开(公告)日：2007-09-06
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
IPC分类号： H02K7/10 , H02K5/16
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。

8. 发明授权

US08125175B2 Electric steering system 有权
标题翻译：电动转向系统
公开(公告)号：US08125175B2
公开(公告)日：2012-02-28
申请号：US12273973
申请日：2008-11-19
申请人： Atsuhiko Yoneda , Yasuo Shimizu , Takashi Miyoshi
发明人： Atsuhiko Yoneda , Yasuo Shimizu , Takashi Miyoshi
IPC分类号： H02P6/08
CPC分类号： H02P6/16 , B62D5/046 , H02P21/04
摘要： An electric steering system is provided with: a steering torque detection unit which detects a steering torque acting on the shaft; a brushless motor which includes a rotor and a stator having multi-phase stator coils, and generates an assisting torque for assisting the steering torque; a current supply switching unit which drives the brushless motor; a rotary angle estimation unit which outputs an estimated rotary angle; a determination unit which determines whether or not the estimated rotary angle is appropriate by comparison with a direction of the steering torque; and a steering control unit which drives the brushless motor in accordance with the estimated rotary angle determined to be appropriate by the determination unit to control generation of the assisting torque.
摘要翻译：电动转向系统设有：转向转矩检测单元，其检测作用在轴上的转向转矩; 无刷电动机，其包括具有多相定子线圈的转子和定子，并且产生用于辅助转向转矩的辅助转矩; 驱动无刷电动机的电流供给切换部; 旋转角度估计单元，其输出估计旋转角度; 确定单元，其通过与所述转向转矩的方向相比较来确定所估计的旋转角度是否适合; 以及转向控制单元，其根据由确定单元确定为适合的估计旋转角度驱动无刷电动机，以控制辅助转矩的产生。

9. 发明申请

US20110231066A1 ELECTRIC POWER STEERING APPARATUS AND ELECTRIC MOTOR DRIVING CONTROLLER USED FOR THE APPARATUS 审中-公开
标题翻译：用于装置的电动转向装置和电动马达驱动控制器
公开(公告)号：US20110231066A1
公开(公告)日：2011-09-22
申请号：US13049702
申请日：2011-03-16
申请人： Satoshi Ohno , Takashi Miyoshi , Atsuhiko Yoneda , Yasuo Shimizu
发明人： Satoshi Ohno , Takashi Miyoshi , Atsuhiko Yoneda , Yasuo Shimizu
IPC分类号： B62D6/00 , B62D5/04
CPC分类号： H02P21/06 , B62D5/046 , B62D5/0463
摘要： A q-axis target current setting unit generates a q-axis current command value based on a steering input signal from a steering torque sensor and a vehicle speed signal from a vehicle speed sensor. An electric motor generates a predetermined torque based on the q-axis current command value and a q-axis current (a torque current) to which a fed back q-axis real current is added. On the other hand, a d-axis correction current setting unit sets a field weakening current (a d-axis current) in response to a voltage saturation (duty ratio=driving voltage of electric motor/power supply voltage) output from a voltage saturation calculating unit. For this reason, when the voltage saturation becomes high, distortion (harmonics component) in current can be decreased by decreasing the voltage saturation while keeping the torque constant using a predetermined torque current, and a torque ripple can be suppressed.
摘要翻译： q轴目标电流设定单元基于来自转向转矩传感器的转向输入信号和来自车速传感器的车速信号生成q轴电流指令值。电动机基于q轴电流指令值和反馈q轴实际电流相加的q轴电流（转矩电流）产生规定的转矩。另一方面，d轴校正电流设定单元响应于从电压饱和（占空比=电动机的驱动电压/电源电压）输出的电压饱和来设定弱磁电流（d轴电流）计算单位。因此，当电压饱和度变高时，通过使用预定的转矩电流保持转矩恒定，通过降低电压饱和度可以降低电流的失真（谐波分量），并且可以抑制转矩波动。

10. 发明申请

US20090128081A1 ELECTRIC STEERING SYSTEM 有权
标题翻译：电动转向系统
公开(公告)号：US20090128081A1
公开(公告)日：2009-05-21
申请号：US12273973
申请日：2008-11-19
申请人： Atsuhiko Yoneda , Yasuo Shimizu , Takashi Miyoshi
发明人： Atsuhiko Yoneda , Yasuo Shimizu , Takashi Miyoshi
IPC分类号： H02P6/08
CPC分类号： H02P6/16 , B62D5/046 , H02P21/04
摘要： An electric steering system is provided with: a steering torque detection unit which detects a steering torque acting on the shaft; a brushless motor which includes a rotor and a stator having multi-phase stator coils, and generates an assisting torque for assisting the steering torque; a current supply switching unit which drives the brushless motor; a rotary angle estimation unit which outputs an estimated rotary angle; a determination unit which determines whether or not the estimated rotary angle is appropriate by comparison with a direction of the steering torque; and a steering control unit which drives the brushless motor in accordance with the estimated rotary angle determined to be appropriate by the determination unit to control generation of the assisting torque.
摘要翻译：电动转向系统设有：转向转矩检测单元，其检测作用在轴上的转向转矩; 无刷电动机，其包括具有多相定子线圈的转子和定子，并且产生用于辅助转向转矩的辅助转矩; 驱动无刷电动机的电流供给切换部; 旋转角度估计单元，其输出估计旋转角度; 确定单元，其通过与所述转向转矩的方向相比较来确定所估计的旋转角度是否适合; 以及转向控制单元，其根据由确定单元确定为适合的估计旋转角度驱动无刷电动机，以控制辅助转矩的产生。

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