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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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42.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：US06973992B2
公开(公告)日：2005-12-13
申请号：US10841922
申请日：2004-05-07
申请人： Atsuhiko Yoneda , Yasuo Shimizu
发明人： Atsuhiko Yoneda , Yasuo Shimizu
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D113/00 , B62D119/00 , H02P6/08
摘要： An elect power steering apparatus includes a motor drive circuit for PWM-driving an electric motor to generate a steering assist torque corresponding to a steering torque. The motor drive circuit includes a bridge circuit formed by a plurality of FETs, and a predrive circuit for driving FETs at a positive potential. Series connected first and second voltage step-up circuits for stepping up a line voltage at two stages are provided in front of the predrive circuit so that the FETs are driven by the predrive circuit with an output voltage from the second voltage step-up circuit supplied to the predrive circuit.
摘要翻译： 电动助力转向装置包括用于PWM驱动电动机以产生与转向转矩相对应的转向辅助转矩的电动机驱动电路。 马达驱动电路包括由多个FET形成的桥接电路和用于以正电位驱动FET的预驱动电路。 在预驱动电路前面设置串联连接的第一和第二升压升压电路，以提高两级线路电压，使得FET由预驱动电路驱动，并提供来自第二升压电路的输出电压 到预驱动电路。
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公开(公告)号：US06719089B2
公开(公告)日：2004-04-13
申请号：US10314056
申请日：2002-12-04
IPC分类号： B62D504
CPC分类号： B62D5/0457
摘要： In en electric power steering apparatus, a motor controller unit controls PWM driving of a brushless motor for imparting a steering torque assist, on the basis of output signals of at least a steering torque detector section, motor current detector section and rotational angle detector section that includes a resolver. Either one of a predetermined frequency of the PWM driving and predetermined exciting frequency of the resolver is set to be an integral multiple of the other of the predetermined PWM driving frequency and the predetermined exciting frequency.
摘要翻译： 在电动助力转向装置中，电动机控制器单元基于至少转向转矩检测器部分的电动机电流检测器部分和旋转角度检测器部分的输出信号来控制用于赋予转向转矩辅助的无刷电动机的PWM驱动， 包括解析器。 将PWM驱动的预定频率和分解器的预定激励频率中的任一个设置为预定PWM驱动频率和预定激励频率中的另一个的整数倍。
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公开(公告)号：US06715578B2
公开(公告)日：2004-04-06
申请号：US10306111
申请日：2002-11-27
申请人： Yasuo Shimizu , Katsuhiro Sakai , Atsuhiko Yoneda
发明人： Yasuo Shimizu , Katsuhiro Sakai , Atsuhiko Yoneda
IPC分类号： B62D100
CPC分类号： B62D1/163 , B62D5/006 , B62D5/0409
摘要： A cable steering system is provided in which first control means controls the operation of a power steering motor disposed between Bowden cables and wheels based on a steering torque detected by a steering torque detection means disposed between a steering wheel and the Bowden cables, and a second control means controls the operation of a steering reaction force addition motor that applies a steering reaction torque to the steering wheel. It is possible to prevent deterioration of the steering feel by generating a steering reaction torque by the steering reaction force addition motor so as to compensate for a change in the steering torque while regulating the change in steering responsiveness due to expansion and contraction of the Bowden cables by generating an assist torque by the power steering motor so as to change the steering torque.
摘要翻译： 提供了一种电缆转向系统，其中第一控制装置基于由设置在方向盘和鲍登电缆之间的转向转矩检测装置检测到的转向转矩来控制设置在鲍登缆线和车轮之间的动力转向电动机的操作，第二控制装置 控制装置控制对方向盘施加转向反作用转矩的转向反作用力追加电动机的动作。 通过由转向反作用力添加电动机产生转向反作用转矩，可以防止转向感觉的劣化，从而补偿转向转矩的变化，同时调节由于鲍登缆索的膨胀和收缩引起的转向响应性的变化 通过由动力转向电动机产生辅助转矩从而改变转向转矩。
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公开(公告)号：US06679350B2
公开(公告)日：2004-01-20
申请号：US10116398
申请日：2002-04-03
申请人： Yasuo Shimizu , Atsuhiko Yoneda , Hisao Asaumi
发明人： Yasuo Shimizu , Atsuhiko Yoneda , Hisao Asaumi
IPC分类号： B62D504
CPC分类号： B62D5/0406
摘要： An electric power steering apparatus capable of controlling a brushless motor accurately and providing excellent steering feeling as well as maintaining the reliability of a control means. The electric power steering apparatus includes a motor, a steering torque detection means (steering torque sensor), a motor rotation detection means, a motor current detection means, a target current setting means (target current setting sub-unit), a drive control means (drive control sub-unit), and a motor drive means (motor drive circuit). The control means (control unit) including a target current setting means, and a drive means (drive unit), which a motor rotation signal enters, including the drive control means and the motor drive means are provided. And the control means and the drive means are placed apart from each other and connected by a communication line electrically.
摘要翻译： 一种电动助力转向装置，其能够精确地控制无刷电动机，并且提供优良的转向感以及保持控制装置的可靠性。 电动助力转向装置包括电动机，转向转矩检测装置（转向转矩传感器），电动机转动检测装置，电动机电流检测装置，目标电流设定装置（目标电流设定子单元），驱动控制装置 （驱动控制子单元）和电机驱动装置（马达驱动电路）。 提供包括目标电流设定装置的控制装置（控制单元）和电动机旋转信号进入的驱动装置（驱动单元），其包括驱动控制装置和电动机驱动装置。 并且控制装置和驱动装置彼此分开放置并通过通信线路电连接。
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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：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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公开(公告)号：US07938026B2
公开(公告)日：2011-05-10
申请号：US12324024
申请日：2008-11-26
IPC分类号： G01L3/02
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。
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