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31 条记录 (耗时 0.015 秒)

    Washer and bracket combination for automatically setting an air gap
    12.
    发明公开
    Washer and bracket combination for automatically setting an air gap 审中-公开
    Halter-Passscheiben-Kombination zur automatischen Justierung eines Luftspalts

    公开(公告)号：EP0921398A1

    公开(公告)日：1999-06-09

    申请号：EP98203892.9

    申请日：1998-11-17

    申请人： GENERAL MOTORS CORPORATION

    发明人： Schroeder, Thaddeus ,  Stevenson, Robin

    IPC分类号： G01P1/00 ,  F16B5/02 ,  G12B9/08

    CPC分类号： G01P1/00 ,  Y10T403/1616 ,  Y10T403/32532

    摘要： A bracket and washer combination (10) providing secure holding and positioning of a magnetic sensor (12), wherein an optimal air gap (G) is automatically set as the washer (30) is brought into a slot (28) of the bracket (26) due to facial interaction therebetween. In one embodiment, the sidewalls (38,40) of the slot (28') have teeth (42) of predetermined pitch, while the washer (30) has smooth sidewalls (46,48). In a second embodiment, the sidewalls of the washer (46',48') have teeth (42') of a predetermined pitch angle, while the sidewalls of the slot (38',40') are smooth. The member having toothed sidewalls is formed of a material harder than the member having smooth sidewalls. The washer and slot are dimensioned so that the sidewalls of the washer tightly abut the sidewalls of the slot, wherein the teeth of the toothed sidewalls inscribe corresponding grooves into the smooth sidewalls as the washer is pressed into the slot along a transverse axis (T). Consequently, as the corresponding grooves are inscribed, the washer sidewalls are caused to move in relation to the slot sidewalls in a direction parallel to the pitch of the teeth, resulting in a relative movement between the washer and the bracket along a longitudinal axis (L). However, since the washer is affixed by a bolt (32) so that it is constrained from moving along the longitudinal axis (L), the relative movement is provided by the bracket (26) moving along the longitudinal axis (L) in relation to the washer (30). The distance of relative movement along the longitudinal axis is given by: D*tan(A) = G, wherein D is the depth of penetration of the washer into the slot along the transverse axis (T), A is the pitch angle of the teeth of the toothed sidewall, and G is the distance of movement of the bracket along the longitudinal axis (L) and is equal to the desired optimum air gap (G).

    摘要翻译： 一种支架和垫圈组合件（10），用于提供牢固地保持和定位磁性传感器（12），其中当所述垫圈（30）进入所述托架的槽（28）时，自动设定最佳气隙（G） 26）由于它们之间的面部相互作用。 在一个实施例中，槽（28'）的侧壁（38,40）具有预定间距的齿（42），而垫圈（30）具有平滑的侧壁（46,48）。 在第二实施例中，垫圈（46'，48'）的侧壁具有预定桨距角的齿（42'），而槽（38'，40'）的侧壁是平滑的。 具有齿形侧壁的构件由比具有平滑侧壁的构件更硬的材料形成。 垫圈和槽的尺寸使得垫圈的侧壁紧密地邻接槽的侧壁，其中当垫圈沿着横向轴线（T）压入槽中时，带齿侧壁的齿将相应的凹槽插入平滑的侧壁中， 。 因此，当相应的凹槽被内接时，使得垫圈侧壁相对于槽侧壁在平行于齿的间距的方向上移动，导致垫圈和托架之间沿着纵向轴线（L ）。 然而，由于垫圈由螺栓（32）固定，使得其被限制为沿着纵向轴线（L）移动，相对运动由沿着纵向轴线（L）移动的托架（26）相对于 垫圈（30）。 沿纵轴相对运动的距离由下式给出：D * tan（A）= G，其中D是垫圈沿横轴（T）穿入狭槽的深度，A是 有齿侧壁的齿，G是支架沿着纵向轴线（L）的移动距离，并且等于期望的最佳气隙（G）。

    Rotational sensor with robust axial alignment tolerance
    13.
    发明公开
    Rotational sensor with robust axial alignment tolerance 失效
    Drehwinkelsensor，来自Richtung ausrichtungstolerant ist

    公开(公告)号：EP0781979A2

    公开(公告)日：1997-07-02

    申请号：EP96203328.8

    申请日：1996-11-26

    申请人： GENERAL MOTORS CORPORATION

    发明人： Lequesne, Bruno Patrice Bernard ,  Schroeder, Thaddeus

    IPC分类号： G01D5/16

    CPC分类号： G01D5/147

    摘要： A rotation sensor for high accuracy angle applications such as internal combustion engine crankshaft position sensing includes a pair of complementary target wheels (25A,25B) and a dual-element magnetoresistive sensor (11). The target wheels (25A,25B) are paced from one another along the rotational axis (Ar) by a predetermined distance (L). The individual magnetoresistive elements (MR1,MR2) are similarly spaced one from the other (2d) and are influenced by the ferrite effects of the target wheels. The spacing of the target wheels and magnetoresistive elements are selected in relation to one another and in relation to the amount of axial play in the crankshaft such that changes in ferrite effects of the target wheels upon the elements due to axial displacement (Δ) of the crankshaft have minimal effect on the accuracy of the sensing apparatus.

    摘要翻译： 用于高精度角度应用的旋转传感器，例如内燃机曲轴位置检测包括一对互补目标轮（25A，25B）和双元件磁阻传感器（11）。 目标轮（25A，25B）沿着旋转轴线（Ar）彼此间隔预定距离（L）。 各个磁阻元件（MR1，MR2）与另一个（2d）相似地间隔开，并受到目标轮的铁氧体效应的影响。 目标轮和磁阻元件的间距相对于彼此选择，并且相对于曲轴中的轴向游隙量来选择，使得目标轮对由于轴向位移（DELTA）引起的元件的铁氧体效应的变化 曲轴对感测装置的精度影响很小。

    A method for thermomagnetic encoding of permanent magnet materials
    14.
    发明公开
    A method for thermomagnetic encoding of permanent magnet materials 失效
    永磁材料的热阻编码方法

    公开(公告)号：EP0555563A3

    公开(公告)日：1994-05-18

    申请号：EP92203968.0

    申请日：1992-12-16

    申请人： GENERAL MOTORS CORPORATION

    发明人： Schroeder, Thaddeus ,  Perry, Thomas Arthur ,  Bradley, John Robert ,  Lequesne, Bruno Patrice Bernard

    IPC分类号： G06K1/12

    CPC分类号： G06K1/125

    摘要： A magnetized or unmagnetized body (10) of a permanent magnet material is heated in a pattern by a laser beam (18) to a temperature sufficient to lower the magnetic coercivity of selected heated regions of the pattern and then exposed to a magnetic field to magnetize or to re-magnetize the selected heated regions. A pattern guide (30) is used in the process to densify the pattern. In the process, energy (18) is directed through the pattern guide (30) and onto the selected regions, whilst the pattern guide (30) prevents or minimizes heating of unselected portions of the body (10). Magnets so produced can have very high pole density, digital encoding and analog patterns having gradually varying local field strength.

    摘要翻译： 永磁材料的磁化或非磁化体（10）通过激光束（18）以图案加热到足以降低所选图案的加热区域的磁矫顽力的温度，然后暴露于磁场以磁化 或重新磁化所选择的加热区域。 在该过程中使用图案引导件（30）来致密化图案。 在该过程中，能量（18）被引导通过图案引导件（30）并且到达所选择的区域，而图案引导件（30）防止或最小化身体（10）的未选择部分的加热。 如此制造的磁体可以具有非常高的极点密度，数字编码和具有逐渐变化的局部场强的模拟图案。

    Angular position detection apparatus
    19.
    发明公开
    Angular position detection apparatus 失效
    Einrichtung zur Winkellageerkennung

    公开(公告)号：EP0689035A1

    公开(公告)日：1995-12-27

    申请号：EP95201068.4

    申请日：1995-04-26

    申请人： GENERAL MOTORS CORPORATION

    发明人： Schroeder, Thaddeus ,  Yamasaki, Hiro ,  Lequesne, Bruno Patrice Bernard

    IPC分类号： G01D5/16 ,  G01D5/249 ,  G01B7/30

    CPC分类号： G01D5/147 ,  G01B7/30 ,  G01D5/2497

    摘要： An apparatus for detecting precise angular positions of a rotating object. Two magnetoresistors (MRs) (24) and (26) are positioned adjacent a target wheel (10) attached to the rotating object, the target wheel having at least one element (12),(14),(16) and (18) of finite length. Each MR is responsive to the passage of at least one of the elements as the target wheel is rotated, generating an analog signal with signal transitions between two voltage levels at the passage of the element's leading and trailing edges. The MRs are positioned relative to the elements such that their signals are phase shifted with respect to one another, resulting in time overlapping signals which intersect at a precise angular positions of the target wheel.

    摘要翻译： 一种用于检测旋转物体的精确角位置的装置。 两个磁阻电阻器（MR）（24）和（26）定位成与附接到旋转物体的目标轮（10）相邻，目标轮具有至少一个元件（12），（14），（16）和（18） 有限长。 当目标轮旋转时，每个MR响应于至少一个元件的通过，在元件的前缘和后缘通过时产生具有在两个电压电平之间的信号转换的模拟信号。 MR相对于元件定位，使得它们的信号相对于彼此相移，导致与目标轮的精确角位置相交的时间重叠信号。