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    • 2. 发明公开
    • Method and apparatus for sensing relative position between two relatively rotatable members using concentric rings
    • 为Wahrnemen方法和装置2组相对旋转的元件之间的相对位置使用同心环
    • EP0709648A2
    • 1996-05-01
    • EP95112306.6
    • 1995-08-04
    • TRW INC.
    • Persson, Erland K.Blandino, DonBoyer, Michael J.Medora, Michael J.
    • G01B7/00G01D5/00
    • H02K19/103G01D5/2073G01D5/2086H02K11/24H02K11/25H02K11/33H02K29/12
    • An apparatus for sensing the relative rotational position between a stator (28) and a rotor (32) in a variable reluctance motor (26) includes a transmitting ring (40) mounted to the rotor (32) and having a transmitting coil (46) mounted thereon. A receiving ring (42) is mounted to stator (46) and has a receiving coil (56) mounted thereon. The receiving coil includes three conductor patterns (56a, 56b, 56c) having the same shape, each of said conductor patterns being electrically insulated from each other, and each conductor pattern being offset from adjacent conductor patterns by 120 electrical degrees. A drive signal is coupled to the transmitting coil. The apparatus further includes a controller (76) for monitoring the outputs from the receiving coil patterns and for determining the relative rotation between the rotor and the stator from the monitored outputs. The receiving coil patterns are each arranged in a circumferentially varying square wave pattern.
    • 用于感测的定子(28)和在可变磁阻电机的转子(32)之间的相对旋转位置的装置(26)包括安装到转子(32)和具有一个发送线圈(40)的发送环(46) 安装在其上。 一种接收环(42)被安装到所述定子(46)和具有(56)安装在其上的接收线圈。 接收线圈包括具有相同形状的3种导体图案(56A,56B,56C),每个所述导体图形在电气上绝缘海誓山盟,并从由120个电角度相邻的导体图案被相互抵消导体图案。 的驱动信号被耦合到发射线圈。 该装置包括:用于从所述接收线圈图案和用于确定性采矿转子和定子从所监视的输出之间的相对旋转的输出进行监视并且一个控制器(76)。 接收线圈图案在圆周方向变化的方波图案中的每个布置。
    • 3. 发明公开
    • Electric steering system
    • 电动转向系统
    • EP0882637A1
    • 1998-12-09
    • EP98110061.3
    • 1998-06-03
    • TRW INC.
    • Boyer, Michael J.
    • B62D5/04
    • B62D5/0448B62D5/0427
    • A steering assembly (10) includes a housing (28, 60) and a member (14) which is movable axially in the housing to effect turning movement of steerable wheels of a vehicle. The member (14) has a rack portion (36) for engagement with a pinion (30) and an externally threaded screw portion (40). A ball nut (110) extends around the screw portion (40) of the member (14) and has an internal thread (116). A plurality of balls (200) are disposed between the internal thread (116) on the ball nut (110) and the external thread (40) on the member (14) for transmitting force between the ball nut and the screw portion of the member. An electric motor (50) for rotating the ball nut (110) includes a stator (70) and a rotor (80). A bearing assembly (150) supports the ball nut (110) for rotation relative to the housing, the bearing assembly including a plurality of bearings (152) disposed between first and second races (154, 156). The central radial plane (158) of the bearings (152) intersects the internal thread (116) of the ball nut (110). A first portion of the internal thread (116) on the ball nut (110) is disposed radially inward of the rotor (80) and the stator (70), and a second portion of the internal thread on the ball nut is disposed axially outward of the rotor and the stator.
    • 转向组件(10)包括壳体(28,60)和可在壳体中轴向移动以实现车辆转向轮的转向运动的构件(14)。 部件(14)具有用于与小齿轮(30)啮合的齿条部分(36)和外螺纹螺纹部分(40)。 滚珠螺母(110)围绕构件(14)的螺纹部分(40)延伸并具有内螺纹(116)。 多个滚珠(200)设置在滚珠螺母(110)上的内螺纹(116)和构件(14)上的外螺纹(40)之间,用于在滚珠螺母和构件的螺纹部分之间传递力 。 用于转动滚珠螺母(110)的电动机(50)包括定子(70)和转子(80)。 轴承组件(150)支撑滚珠螺母(110)以相对于壳体旋转,该轴承组件包括设置在第一和第二座圈(154,156)之间的多个轴承(152)。 轴承(152)的中心径向平面(158)与滚珠螺母(110)的内螺纹(116)相交。 滚珠螺母(110)上的内螺纹(116)的第一部分设置在转子(80)和定子(70)的径向内侧,滚珠螺母上的内螺纹的第二部分设置在轴向外侧 的转子和定子。