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25 条记录 (耗时 0.039 秒)

    Rotary encoder with neutral position
    1.
    发明授权
    Rotary encoder with neutral position 失效
    带中性位置的旋转编码器

    公开(公告)号：US5491632A

    公开(公告)日：1996-02-13

    申请号：US249409

    申请日：1994-05-26

    申请人： Andrzej M. Pawlak ,  William C. Lin ,  David W. Graber ,  Dennis C. Eckhardt ,  Scott E. Weiss ,  Maged Radamis ,  Thomas A. Perry ,  John R. Bradley

    发明人： Andrzej M. Pawlak ,  William C. Lin ,  David W. Graber ,  Dennis C. Eckhardt ,  Scott E. Weiss ,  Maged Radamis ,  Thomas A. Perry ,  John R. Bradley

    IPC分类号： B62D5/04 ,  B62D15/02 ,  B62D5/00

    CPC分类号： B62D15/0215 ,  B62D15/0245

    摘要： A rotary encoder capable of detecting angular rotation of a rotating shaft, and identifying its neutral position without the need for multiple encoder wheels. A magnetoresistive sensor is positioned adjacent the periphery of a single multipole magnet ring attached to a steering wheel shaft. The magnet ring comprises alternating N-pole and S-pole magnetic regions along its periphery, the surface of one of the regions containing a demagnetized portion. The sensor produces a sinusoidal signal as the shaft is rotated, responsive to the passage of the magnetic regions, with a period equal to the passage of two successive magnetic regions adjacent the sensor. The angular position of the shaft which aligns the demagnetized portion adjacent the sensor corresponds to the shaft's neutral position. Aligning of the demagnetized portion adjacent the sensor causes a voltage irregularity within the sensor's otherwise sinusoidal output signal, which is detected by a signal processing circuit.

    摘要翻译： 一种旋转编码器，能够检测旋转轴的角度旋转，并且识别其中立位置，而不需要多个编码器轮。 磁阻传感器位于附接到方向盘轴的单个多极磁环的周边附近。 磁环包括沿其周边的交替的N极和S极磁区，其中一个区域的表面包含去磁部分。 当轴旋转时，传感器产生正弦信号，响应于磁区的通过，其周期等于与传感器相邻的两个连续磁区的通过。 将去磁部分对准传感器对准的轴的角位置对应于轴的中立位置。 与传感器相邻的去磁部分的对准导致传感器否则正弦输出信号内的电压不规则，其由信号处理电路检测。

    Vehicle steering wheel position sensing apparatus
    2.
    发明授权
    Vehicle steering wheel position sensing apparatus 失效
    车辆方向盘位置检测装置

    公开(公告)号：US5434784A

    公开(公告)日：1995-07-18

    申请号：US296553

    申请日：1994-08-26

    申请人： John R. Bradley ,  Thomas A. Perry ,  Richard E. Teets ,  Martin S. Meyer ,  Jeffrey A. Sell ,  Thomas H. Van Steenkiste ,  Frank J. Bohac, Jr. ,  Jerry S. Roach ,  Manfred W. Reissmueller ,  Everett K. Shelton ,  Dozier: James R. ,  Hiro Yamasaki

    发明人： John R. Bradley ,  Thomas A. Perry ,  Richard E. Teets ,  Martin S. Meyer ,  Jeffrey A. Sell ,  Thomas H. Van Steenkiste ,  Frank J. Bohac, Jr. ,  Jerry S. Roach ,  Manfred W. Reissmueller ,  Everett K. Shelton ,  Dozier: James R. ,  Hiro Yamasaki

    IPC分类号： B62D15/02 ,  B62D5/00

    CPC分类号： B62D15/02

    摘要： This invention relates to an apparatus for sensing a vehicle steering wheel position. A permanent magnet target wheel having a global axial magnetic field normal to a first surface is attached to a steering shaft which is rotated by the steering wheel. Multiple regions equally spaced along a common radius on the first surface are magnetically altered and sensed by magnetically responsive sensors positioned adjacent the first radius. A single region positioned within a finite radius along a second radius on the first surface is magnetically altered and sensed by a magnetically responsive sensor positioned adjacent the second radius. The magnetic sensors are responsive to passage of the multiple regions and single region as the target wheel is rotated. Detection of each of the multiple regions corresponds to rotation of the target wheel by an incremental number of degrees. Detection of the single region corresponds to a target wheel position within a predetermined angular range, referred to as the center position. A turn counter is utilized to determine which of the center positions corresponds to the steering wheel neutral position.

    摘要翻译： 本发明涉及一种感测车辆方向盘位置的装置。 具有垂直于第一表面的全局轴向磁场的永磁体目标轮被附接到由方向盘旋转的转向轴。 沿着第一表面上的共同半径等距间隔的多个区域被磁性地改变并且被邻近第一半径定位的磁响应传感器感测。 沿着第一表面上的第二半径定位在有限半径内的单个区域被磁性地改变并且被邻近第二半径定位的磁响应传感器感测。 当目标轮旋转时，磁传感器响应于多个区域和单个区域的通过。 多个区域中的每一个的检测对应于目标车轮的旋转增加的数量。 单个区域的检测对应于称为中心位置的预定角度范围内的目标车轮位置。 使用转弯计数器来确定哪个中心位置对应于方向盘中立位置。

    Thermomagnetically patterned magnets and method of making same
    3.
    发明授权
    Thermomagnetically patterned magnets and method of making same 失效
    热磁图案磁铁及其制造方法

    公开(公告)号：US5283130A

    公开(公告)日：1994-02-01

    申请号：US788662

    申请日：1991-11-06

    申请人： John R. Bradley ,  Thomas A. Perry ,  Thaddeus Schroeder

    发明人： John R. Bradley ,  Thomas A. Perry ,  Thaddeus Schroeder

    IPC分类号： H01F7/02 ,  G06K1/12 ,  H01F13/00 ,  H01F1/00

    CPC分类号： G06K1/125 ,  Y10T428/31993

    摘要： A permanent magnet is heated in a pattern by a laser beam to a localized temperature above the Curie point or a temperature sufficient to reduce the magnet coercivity sufficiently for the field of the magnet or an external field to remagnetize the pattern in the reverse direction. Magnets so produced can have very high pole density, digital encoding and analog patterns having gradually varying local field strength.

    摘要翻译： 永磁体通过激光束以图案加热到高于居里点的局部温度或足以使磁体矫顽磁力充分降低磁场或外场的温度，从而使反向图案再磁化。 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。

    Thermomagnetic encoding method and articles
    4.
    发明授权
    Thermomagnetic encoding method and articles 失效
    热磁编码方法及制品

    公开(公告)号：US5492571A

    公开(公告)日：1996-02-20

    申请号：US140956

    申请日：1993-10-25

    申请人： Robert A. Frosch ,  Thomas A. Perry ,  John R. Bradley ,  Thaddeus Schroeder ,  Bruno P. B. Lequesne

    发明人： Robert A. Frosch ,  Thomas A. Perry ,  John R. Bradley ,  Thaddeus Schroeder ,  Bruno P. B. Lequesne

    IPC分类号： C21D1/04 ,  C21D1/09 ,  C21D1/34 ,  G01D5/249 ,  G01P3/487 ,  G06K1/12 ,  H01F1/03 ,  H01F1/057 ,  H02K1/27 ,  H02K15/03 ,  H01F1/032

    CPC分类号： H02K15/03 ,  C21D1/04 ,  C21D1/34 ,  G01D5/249 ,  G01P3/487 ,  G06K1/125 ,  H01F1/0306 ,  H01F1/057 ,  H02K1/2733 ,  C21D1/09 ,  C21D2221/00 ,  Y10T29/49007

    摘要： An article comprising first and second bodies of permanent magnet material, each of said first and second bodies consisting substantially of a substrate of permanent magnet material being magnetized substantially uniformly to a predetermined flux density in a range from zero flux to 100% flux saturation of the permanent magnet material; each of the first and second bodies also comprising a pattern of at least one affected volume in a surface of the body, wherein each affected volume has a magnetic flux density that varies from the substantially uniform predetermined flux density and wherein the first and second bodies are stacked and fixedly attached so that the pattern on each body aligns with the pattern on the other body, wherein at least one affected volume on the first body is aligned with at least one affected volume on the second body and wherein the aligned affected volumes comprise a pole detectable by a magnetic sensor.

    摘要翻译： 一种包括永磁材料的第一和第二本体的制品，所述第一和第二主体中的每一个基本上由永久磁铁材料的基底组成，其基本均匀地磁化至预定的磁通密度，其范围为零通量至100％的磁通饱和度 永磁材料; 所述第一和第二主体中的每一个还包括在所述主体的表面中的至少一个受影响的体积的图案，其中每个受影响的体积具有从基本上均匀的预定通量密度变化的磁通密度，并且其中所述第一和第二主体是 堆叠并固定地附接，使得每个主体上的图案与另一个主体上的图案对准，其中第一主体上的至少一个受影响的体积与第二主体上的至少一个受影响的体积对准，并且其中对准的受影响体积包括 磁极可由磁传感器检测。

    HEAT TREATMENT FOR PRODUCING STEEL SHEET WITH HIGH STRENGTH AND DUCTILITY
    10.
    发明申请
    HEAT TREATMENT FOR PRODUCING STEEL SHEET WITH HIGH STRENGTH AND DUCTILITY 有权
    用于生产具有高强度和坚固性的钢板的热处理

    公开(公告)号：US20130186527A1

    公开(公告)日：2013-07-25

    申请号：US13354589

    申请日：2012-01-20

    申请人： John R. Bradley

    发明人： John R. Bradley

    IPC分类号： C21D8/02 ,  C21D6/02

    CPC分类号： C21D1/18 ,  C21D6/02 ,  C21D8/02

    摘要： The microstructure of a low alloy steel workpiece for cold forming may be beneficially modified by heating the workpiece to a temperature just above its austenite transformation temperature (Ac3 temperature). The steel workpiece is then cooled just below its Ac3 temperature to promote ferrite formation on and between the austenite grains. Heating and cooling, above and below the Ac3 temperature, is repeated a determined number of times to refine the austenite grains before the workpiece is quenched below its martensite transformation temperature to form a mixture of martensite with increased retained austenite. The workpiece may be further heated in its martensite region to increase the proportion of retained austenite before quenching the steel workpiece to an ambient temperature. The formability of the workpiece is improved, as is the strength of its formed shape.

    摘要翻译： 用于冷成型的低合金钢工件的微观结构可以通过将工件加热到刚好高于其奥氏体转变温度（Ac 3温度）的温度来有利地进行改性。 然后将钢工件冷却到低于其Ac3温度，以促进在奥氏体晶粒之间和之间形成铁素体。 在Ac3温度以上和以下的加热和冷却重复确定次数，以在工件淬火低于其马氏体相变温度之前将奥氏体晶粒细化，以形成马氏体与增加的残余奥氏体的混合物。 工件可以在其马氏体区域进一步加热，以在将钢材工件淬火至环境温度之前增加残余奥氏体的比例。 工件的成型性也随其形成的强度而提高。