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31. 发明授权

US08556023B2 Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US08556023B2
公开(公告)日：2013-10-15
申请号：US13158174
申请日：2011-06-10
申请人： Yasuo Shimizu , Atsuhiko Yoneda , Shigeru Yamawaki , Takehito Shiraishi
发明人： Yasuo Shimizu , Atsuhiko Yoneda , Shigeru Yamawaki , Takehito Shiraishi
IPC分类号： B62D5/04
CPC分类号： B62D1/16 , B62D3/12 , B62D7/224 , B62D7/226 , B62D7/228
摘要： In an electric power steering apparatus, an elastic member, disposed between the steering shaft and the housing, configured to be elastically deformed in accordance with rotation or displacement in a vehicle width direction, of the steering shaft. At least two bearings, disposed with a gap in an axial direction of the steering shaft, are configured to support the steering shaft. The elastic member is disposed between the bearings. A supporting member may be disposed between the steering shaft and the elastic member and configured to be displaced by a rotation of a predetermined angle or predetermined distance in accordance with the rotation or a displacement, in the width direction of the vehicle, of the steering shaft with slidable support for the steering shaft. The elastic member is fixed to the supporting member and abuts the housing.
摘要翻译：在电动助力转向装置中，设置在所述转向轴和所述壳体之间的弹性构件被构造成根据所述转向轴的车辆宽度方向上的旋转或位移而弹性变形。在转向轴的轴向方向上设置有间隙的至少两个轴承构造成支撑转向轴。弹性构件设置在轴承之间。支撑构件可以设置在转向轴和弹性构件之间，并且构造成根据车辆的宽度方向上的转向或位移而以预定角度或预定距离的旋转而移位，转向轴具有用于转向轴的可滑动支撑。弹性构件固定在支撑构件上并与壳体抵接。

32. 发明申请

US20120273293A1 ELECTRIC POWER STEERING APPARATUS 有权
标题翻译：电动转向装置
公开(公告)号：US20120273293A1
公开(公告)日：2012-11-01
申请号：US13451264
申请日：2012-04-19
申请人： Yoshihiro Oniwa , Yasuo Shimizu , Atsuhiko Yoneda
发明人： Yoshihiro Oniwa , Yasuo Shimizu , Atsuhiko Yoneda
IPC分类号： B62D6/10 , B62D5/04
CPC分类号： B62D5/0463
摘要： As a quotient, which is produced when the value of an assistive current for causing an electric motor to generate an assistive torque is divided by the value of a steering torque detected by a steering torque sensor, becomes greater, a greater phase-lag compensation (smaller phase-lead compensation) is performed on the steering torque detected by the steering torque sensor. Within a region in which the steering sensation is reduced, a greater phase-lead compensation is performed.
摘要翻译：作为将用于使电动机产生辅助转矩的辅助电流的值除以由转向转矩传感器检测的转向转矩的值而产生的商变得更大，较大的相位滞后补偿（对转向扭矩传感器检测到的转向转矩进行更小的相位超前补偿。在转向感觉降低的区域内，执行更大的相位超前补偿。

33. 发明申请

US20120216645A1 WORM WHEEL 有权
标题翻译： WORM轮
公开(公告)号：US20120216645A1
公开(公告)日：2012-08-30
申请号：US13505350
申请日：2010-10-20
申请人： Yosuke Tanaka , Yasuo Shimizu , Atsuhiko Yoneda
发明人： Yosuke Tanaka , Yasuo Shimizu , Atsuhiko Yoneda
IPC分类号： F16H55/06
CPC分类号： F16H55/06 , B62D5/0409 , F16H55/22 , F16H2055/065
摘要： Provided is a worm wheel that allows the residual stress in the plastic gear forming member thereof to be reduced, and suited for compact design. The worm wheel comprises a metallic core member (30) and a plastic gear forming member (20) formed on an outer periphery of the core member. In particular, the core member includes a boss portion (31) defining a pivot portion, an intermediate portion (32) extending radially from the outer periphery of the boss portion, and a cylindrical portion (33) connected to a radially outer end of the intermediate portion and having the gear forming member molded thereon coaxially with the boss, the cylindrical portion being formed with through holes (34) or cutouts (36) passed radially therethrough.
摘要翻译：提供一种能够减小塑料齿轮形成构件中的残余应力的蜗轮，适用于紧凑的设计。蜗轮包括金属芯构件（30）和形成在芯构件的外周上的塑料齿轮形成构件（20）。特别地，芯部件包括限定枢转部分的凸起部分（31），从凸起部分的外周径向延伸的中间部分（32）和连接到凸起部分的径向外端的圆柱形部分（33）中间部分并且具有与凸台同轴成型的齿轮形成构件，圆柱形部分形成有径向通过的通孔（34）或切口（36）。

34. 发明授权

US08011256B2 Magnetostrictive torque sensor and method of manufacturing same 有权
标题翻译：磁致伸缩扭矩传感器及其制造方法
公开(公告)号：US08011256B2
公开(公告)日：2011-09-06
申请号：US12756283
申请日：2010-04-08
申请人： Atsuhiko Yoneda , Yasuo Shimizu
发明人： Atsuhiko Yoneda , Yasuo Shimizu
IPC分类号： G01R3/00 , G01L3/00
CPC分类号： G01L3/102 , G01L3/103 , H01F10/14 , H01F41/24 , H01L41/125 , Y10T29/49007 , Y10T29/4902
摘要： A magnetostrictive torque sensor includes a single magnetostrictive film disposed on a steering shaft, and first and second coils for detecting changes in a magnetic property of the magnetostrictive film. The single magnetostrictive film includes a first anisotropic region and a second anisotropic region, having respective magnetic anisotropies inverse to each other. The first coil is disposed in confronting relation to the first anisotropic region, whereas the second coil is disposed in confronting relation to the second anisotropic region.
摘要翻译：磁致伸缩扭矩传感器包括设置在转向轴上的单个磁致伸缩膜，以及用于检测磁致伸缩膜的磁特性变化的第一和第二线圈。单个磁致伸缩膜包括具有彼此相反的各自的磁各向异性的第一各向异性区域和第二各向异性区域。第一线圈以与第一各向异性区域相对的方式设置，而第二线圈以与第二各向异性区域相对的方式设置。

35. 发明授权

US07478568B2 Magnetostrictive torque sensor system and electric power steering apparatus employing the same 有权
标题翻译：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
申请人： Atsuhiko Yoneda , Yasuo Shimizu , Shunichiro Sueyoshi
发明人： Atsuhiko Yoneda , Yasuo Shimizu , Shunichiro Sueyoshi
IPC分类号： G01L3/00
CPC分类号： G01L3/102 , G01L3/105 , G01L5/221
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。

36. 发明授权

US06838844B2 Electric power steering apparatus 失效
标题翻译：电动助力转向装置
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.

37. 发明授权

US06543569B1 Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US06543569B1
公开(公告)日：2003-04-08
申请号：US09680699
申请日：2000-10-06
申请人： Yasuo Shimizu , Yasuharu Ohyama , Katsuji Watanabe , Shigeru Yamawaki , Atsuhiko Yoneda , Yasuhiro Terada
发明人： Yasuo Shimizu , Yasuharu Ohyama , Katsuji Watanabe , Shigeru Yamawaki , Atsuhiko Yoneda , Yasuhiro Terada
IPC分类号： B62D504
CPC分类号： F16H55/26 , B21K1/767 , B62D3/123 , B62D3/126 , B62D5/04 , B62D5/0421 , F16H55/08 , F16H55/285 , Y10T74/1906 , Y10T74/19953
摘要： An electric power steering apparatus comprising a rack shaft having two racks, a first rack-and-pinion mechanism for transferring a steering torque to the rack shaft, and a second rack-and-pinion mechanism for transferring an assist torque to the rack shaft. The second rack-and-pinion mechanism includes a pinion and a rack both being helical gears so that a large torque can be transmitted to the rack shaft. Teeth of the pinion and rack are arc profiled. The arc profiled teeth mesh with each other through a large contact area of concave and convex surfaces thereof and hence with a reduced contact pressure compared to involute profiled teeth. The arc profiled teeth thus have increased surface fatigue strength, bending strength and bending fatigue strength and can transmit an assist torque sufficiently to the rack shaft. Moreover, they have durability sufficient to withstand a torque load of a motor inertia.
摘要翻译：一种电动助力转向装置，包括具有两个齿条的齿条轴，用于将转向转矩传递到齿条轴的第一齿条和小齿轮机构，以及用于将辅助转矩传递到齿条轴的第二齿条齿轮机构。第二齿条齿轮机构包括小齿轮和齿条，两者都是斜齿轮，从而能够将大的扭矩传递到齿条轴。小齿轮和齿条的牙齿呈弧形。弧形牙齿通过其凹凸表面的大的接触面彼此啮合，因此与渐开线成型齿相比具有降低的接触压力。因此，弧形牙齿具有增加的表面疲劳强度，弯曲强度和弯曲疲劳强度，并且可以将足够的辅助扭矩传递到齿条轴。此外，它们具有足以承受电动机惯性的转矩负载的耐久性。

38. 发明授权

US08924080B2 Electric power steering device 有权
标题翻译：电动助力转向装置
公开(公告)号：US08924080B2
公开(公告)日：2014-12-30
申请号：US14236239
申请日：2012-05-22
申请人： Yoshihiro Oniwa , Yasuo Shimizu , Atsuhiko Yoneda
发明人： Yoshihiro Oniwa , Yasuo Shimizu , Atsuhiko Yoneda
IPC分类号： B62D5/04 , G05D17/02
CPC分类号： B62D5/0463 , G05D17/02
摘要： Provided is an electric power steering device in which the operation feeling is improved without a decrease in commercial value. A phase compensation unit performs a frequency shift on a compensation frequency band compensated by the phase compensation unit. The phase compensation unit performs phase-shift in the compensation frequency band through a frequency shift process, instead of an increase in compensation gain. Therefore, it is possible to minimize occurrences of minute vibrations and abnormal noise in the steering system including the motor that accompany an increase in gain, and to improve the operation feeling and commercial value.
摘要翻译：本发明提供一种在不降低商业价值的情况下提高操作感觉的电动助力转向装置。相位补偿单元对由相位补偿单元补偿的补偿频带进行频移。相位补偿单元通过频移处理来执行补偿频带中的相移，而不是补偿增益的增加。因此，可以使伴随增益增加的包括电动机的转向系统中的微小振动和异常噪声的发生最小化，并且提高操作感和商业价值。

39. 发明申请

US20140195122A1 ELECTRIC POWER STEERING DEVICE 有权
标题翻译：电动转向装置
公开(公告)号：US20140195122A1
公开(公告)日：2014-07-10
申请号：US14236239
申请日：2012-05-22
申请人： Yoshihiro Oniwa , Yasuo Shimizu , Atsuhiko Yoneda
发明人： Yoshihiro Oniwa , Yasuo Shimizu , Atsuhiko Yoneda
IPC分类号： B62D5/04
CPC分类号： B62D5/0463 , G05D17/02
摘要： Provided is an electric power steering device in which the operation feeling is improved without a decrease in commercial value. A phase compensation unit performs a frequency shift on a compensation frequency band compensated by the phase compensation unit. The phase compensation unit performs phase-shift in the compensation frequency band through a frequency shift process, instead of an increase in compensation gain. Therefore, it is possible to minimize occurrences of minute vibrations and abnormal noise in the steering system including the motor that accompany an increase in gain, and to improve the operation feeling and commercial value.
摘要翻译：本发明提供一种在不降低商业价值的情况下提高操作感觉的电动助力转向装置。相位补偿单元对由相位补偿单元补偿的补偿频带进行频移。相位补偿单元通过频移处理来执行补偿频带中的相移，而不是补偿增益的增加。因此，可以使伴随增益增加的包括电动机的转向系统中的微小振动和异常噪声的发生最小化，并且提高操作感和商业价值。

40. 发明授权

US08670904B2 Motor control device and electric steering system 有权
标题翻译：电机控制装置和电动转向系统
公开(公告)号：US08670904B2
公开(公告)日：2014-03-11
申请号：US12937485
申请日：2009-05-28
申请人： Atsuhiko Yoneda , Yasuo Shimizu
发明人： Atsuhiko Yoneda , Yasuo Shimizu
IPC分类号： G06F17/00 , G06F19/00 , B62D6/00 , G08B1/06
CPC分类号： B62D5/0484 , B62D5/046 , B62D5/049 , H02P6/185 , H02P29/032
摘要： A motor control device includes: a rotation angle detection portion that detects a rotation angle of a motor and outputs a rotation angle signal; an abnormal condition detection portion that detects the presence or absence of an abnormal condition of the rotation angle detection portion; a rotation angle estimation portion that estimates the rotation angle of the motor and outputs an estimate rotation angle signal; and a driving control portion that controls driving of the motor on the basis of the rotation angle signal, which is output from the rotation angle detection portion, when the abnormal condition detection portion does not detect an abnormal condition of the rotation angle detection portion, and controls driving of the motor on the basis of the estimate rotation angle signal, which is output from the rotation angle estimation portion, when the abnormal condition detection portion detects an abnormal condition of the rotation angle detection portion.
摘要翻译：电动机控制装置包括：旋转角度检测部，其检测电动机的旋转角度并输出旋转角度信号; 异常状态检测部，其检测所述旋转角度检测部的异常状况的有无; 旋转角度估计部，其估计所述电动机的旋转角度并输出估计旋转角度信号; 以及驱动控制部，当所述异常状态检测部未检测到所述旋转角度检测部的异常状态时，基于从所述旋转角度检测部输出的旋转角度信号来控制所述电动机的驱动，以及当异常状态检测部检测到旋转角度检测部的异常状况时，基于从旋转角度估计部输出的估计旋转角度信号来控制电动机的驱动。

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