Rotary position sensing apparatus
    1.
    发明授权
    Rotary position sensing apparatus 失效
    旋转位置检测装置

    公开(公告)号:US08004277B2

    公开(公告)日:2011-08-23

    申请号:US12346512

    申请日:2008-12-30

    IPC分类号: G01B7/30

    摘要: An angular position sensor (100) for determining angular position includes a shaft (105) having a threaded portion (108), and a structure for engaging an external application (119). The shaft (105) includes a first permanent magnet (114). A nut (116) is threaded on the threaded portion (108). The nut (116) is formed from a first magnetic permeable material or includes a second permanent magnet (118). At least one constraint (122) is coupled to the nut (116) for preventing rotational movement of the nut (116) while allowing linear motion of the nut (116). A first magnetic sensor (120) is positioned along a length of the threaded portion (108) of the nut (116) for measuring a linear position of the nut (116). A second magnetic sensor (124) is provided for measuring an angular position of the shaft (105). Signal processing circuitry (130) is coupled to receive outputs from both the first magnetic sensor (120) and second magnetic sensor (124) for calculating a parameter relating to an angular position of the rotatable member.

    摘要翻译: 用于确定角位置的角位置传感器(100)包括具有螺纹部分(108)的轴(105)和用于接合外部应用(119)的结构。 轴(105)包括第一永磁体(114)。 螺母(116)螺纹连接在螺纹部分(108)上。 螺母(116)由第一可渗透材料形成或包括第二永磁体(118)。 至少一个约束(122)联接到螺母(116),用于防止螺母(116)的旋转运动,同时允许螺母(116)的线性运动。 第一磁传感器(120)沿螺母(116)的螺纹部分(108)的长度定位,用于测量螺母(116)的线性位置。 第二磁传感器(124)用于测量轴(105)的角位置。 信号处理电路(130)被耦合以接收来自第一磁传感器(120)和第二磁传感器(124)的输出,用于计算与可旋转构件的角位置相关的参数。

    Robust solution for mitigating eccentricity in a rotary sensor apparatus
    2.
    发明申请
    Robust solution for mitigating eccentricity in a rotary sensor apparatus 失效
    用于减轻旋转传感器设备中偏心率的可靠解决方案

    公开(公告)号:US20090009159A1

    公开(公告)日:2009-01-08

    申请号:US11825722

    申请日:2007-07-07

    IPC分类号: G01B7/31

    CPC分类号: G01D5/145 G01D3/028

    摘要: A robust solution for eccentricity issues in 360 degree rotary sensor application utilizing a hollow cylindrical magnet. A hollow cylindrical magnet design can be implemented to drive a parallel field magnetic sensor based oh Hall/AMR technologies. Eccentricity variations of ±0.46 mm on X and Y axes can be reduced by at least 20%, in turn improving the repeatability, linearity error and a correlation error associated with the sensor. For tilts of ±3 degrees, the error can be reduced to at least 50% compared to a solid magnet, thereby increasing the repeatability and accuracy of the rotary sensor. The disclosed design improves linearity, is robust in vibration and improves reliability in lifecycle as the sensor configuration is less affected by wear and tear due to mechanical vibrations.

    摘要翻译: 在360度旋转传感器应用中利用中空圆柱形磁体的偏心问题的可靠解决方案。 可以实现中空圆柱形磁铁设计,以驱动基于Oh Hall / AMR技术的平行场磁传感器。 X轴和Y轴上±0.46 mm的偏心度变化可以降低至少20%,从而提高与传感器相关的重复性,线性误差和相关误差。 对于±3度的倾斜,与固体磁体相比,误差可以降低至少50%,从而提高旋转传感器的重复性和精度。 所公开的设计提高了线性,在振动中是坚固的,并提高了生命周期的可靠性,因为传感器配置受到机械振动的磨损和影响较小。

    ROTARY POSITION SENSING APPARATUS
    3.
    发明申请
    ROTARY POSITION SENSING APPARATUS 失效
    旋转位置感应装置

    公开(公告)号:US20100163333A1

    公开(公告)日:2010-07-01

    申请号:US12346512

    申请日:2008-12-30

    IPC分类号: B62D5/04 G06F15/00

    摘要: An angular position sensor (100) for determining angular position includes a shaft (105) having a threaded portion (108), and a structure for engaging an external application (119). The shaft (105) includes a first permanent magnet (114). A nut (116) is threaded on the threaded portion (108). The nut (116) is formed from a first magnetic permeable material or includes a second permanent magnet (118). At least one constraint (122) is coupled to the nut (116) for preventing rotational movement of the nut (116) while allowing linear motion of the nut (116). A first magnetic sensor (120) is positioned along a length of the threaded portion (108) of the nut (116) for measuring a linear position of the nut (116). A second magnetic sensor (124) is provided for measuring an angular position of the shaft (105). Signal processing circuitry (130) is coupled to receive outputs from both the first magnetic sensor (120) and second magnetic sensor (124) for calculating a parameter relating to an angular position of the rotatable member.

    摘要翻译: 用于确定角位置的角位置传感器(100)包括具有螺纹部分(108)的轴(105)和用于接合外部应用(119)的结构。 轴(105)包括第一永磁体(114)。 螺母(116)螺纹连接在螺纹部分(108)上。 螺母(116)由第一可渗透材料形成或包括第二永磁体(118)。 至少一个约束(122)联接到螺母(116),用于防止螺母(116)的旋转运动,同时允许螺母(116)的线性运动。 第一磁传感器(120)沿螺母(116)的螺纹部分(108)的长度定位,用于测量螺母(116)的线性位置。 第二磁传感器(124)用于测量轴(105)的角位置。 信号处理电路(130)被耦合以接收来自第一磁传感器(120)和第二磁传感器(124)的输出,用于计算与可旋转构件的角位置相关的参数。

    Rotary sensor with rotary sensing element and rotatable hollow magnet
    4.
    发明授权
    Rotary sensor with rotary sensing element and rotatable hollow magnet 失效
    带旋转传感元件和旋转中空磁铁的旋转传感器

    公开(公告)号:US07710110B2

    公开(公告)日:2010-05-04

    申请号:US11825722

    申请日:2007-07-07

    IPC分类号: G01B7/30

    CPC分类号: G01D5/145 G01D3/028

    摘要: A robust solution for eccentricity issues in 360 degree rotary sensor application utilizing a hollow cylindrical magnet. A hollow cylindrical magnet design can be implemented to drive a parallel field magnetic sensor based on Hall/AMR technologies. Eccentricity variations of +/−0.46 mm on X and Y axes can be reduced by at least 20%, in turn improving the repeatability, linearity error and a correlation error associated with the sensor. For tilts of +/−3 degrees, the error can be reduced to at least 50% compared to a solid magnet, thereby increasing the repeatability and accuracy of the rotary sensor. The disclosed design improves linearity, is robust in vibration and improves reliability in lifecycle as the sensor configuration is less affected by wear and tear due to mechanical vibrations.

    摘要翻译: 在360度旋转传感器应用中利用中空圆柱形磁体的偏心问题的可靠解决方案。 可以实现中空圆柱形磁铁设计,以驱动基于霍尔/ AMR技术的平行场磁传感器。 X轴和Y轴上+/- 0.46 mm的偏心度变化可以降低至少20%,从而提高与传感器相关的重复性,线性误差和相关误差。 对于+/- 3度的倾斜,与固体磁体相比,误差可以降低至少50%,从而提高旋转传感器的重复性和精度。 所公开的设计提高了线性,在振动中是坚固的,并提高了生命周期的可靠性,因为传感器配置受到机械振动的磨损和影响较小。