公开(公告)号：EP1221590A2

公开(公告)日：2002-07-10

申请号：EP01204859.1

申请日：2001-12-12

Applicant: Delphi Technologies, Inc.

Inventor： Schroeder, Thaddeus

IPC: G01D5/16

CPC classification number: G01D5/145

Abstract: A position sensor system (10) capable of self compensation over wide temperature ranges, air gaps and tilts. Three matched MRs (MR1, MR2, MR3) are aligned in the direction of movement (X) of a magnetic target (30). The middle MR (MR2) is the position sensor, and the two outer MRs serve as reference sensors which sense the magnetic field at the limits of the position sensing range. The cooperating magnetic target assures that one of the two outer MR elements is always exposed to some maximum magnetic field, B MAX , corresponding to a position X MAX , and the other MR element is always exposed to some minimum magnetic field, B MIN , corresponding to a position X MIN , such that B MIN ≤ B X ≤ B MAX , corresponding to X MIN ≤ X ≤ X MAX , where B X is the magnetic field measured by the middle MR and varies with the position, X, of the target. The actual position, X, is computed assuming a linear relation between MR resistance in the magnetic field range from B MIN to B MAX and the position, X, of the target. This is accomplished by making the magnetic field a linear function of position in the range X MIN to X MAX and using MRs whose resistance is a linear function of magnetic field in the range B MIN to B MAX .

Abstract translation: 位置传感器系统（10）能够在宽温度范围内自补偿，气隙和倾斜。 三个匹配的MR（MR1，MR2，MR3）在磁性目标（30）的移动方向（X）上对齐。 中间MR（MR2）是位置传感器，两个外部MR用作在位置感测范围极限处感测磁场的参考传感器。 协作的磁性目标确保两个外部MR元件中的一个总是暴露于对应于位置XMAX的一些最大磁场BMAX，而另一个MR元件总是暴露于对应于位置的一些最小磁场BMIN XMIN，使得BMIN≤BX≤BMAX，对应于XMIN≤X≤XMAX，其中BX是由中间MR测量的磁场，并且随着目标的位置X而变化。 假设在从BMIN到BMAX的磁场范围内的MR电阻与目标的位置X之间的线性关系来计算实际位置X。 这是通过使磁场成为XMIN至XMAX范围内的位置的线性函数，并使用电阻为BMIN至BMAX范围内的磁场线性函数的MR来实现的。

公开(公告)号：EP1083407A2

公开(公告)日：2001-03-14

申请号：EP00203090.6

申请日：2000-09-07

Applicant: Delphi Technologies, Inc.

Inventor： Schroeder, Thaddeus ,  Lequesne, Bruno ,  Omekanda, Avoki M.

IPC: G01D5/16

CPC classification number: G01D5/145

Abstract: An analog angle encoder (100) includes a non-magnetic stator (102) which is cup-shaped, having a central post (108) carrying at least one magnetosensitive device, and further including a rotor (114) in the form of a ring captured by the stator, the rotor carrying at least one permanent magnet (116), wherein the rotor is rotatable relative to the stator. As the rotor rotates relative to the stator, the angle of the incident magnetic field changes relative to the magnetosensitive device, thereby causing the output from the device to vary sinusoidally with angular position. It is preferred to use magnetic configurations other than simple six sided magnets in order to achieve a more uniform magnetic field at the magnetosensitive device, as for example by utilizing cylindrical magnets (116a', 116b'), arcuate (concave faced) magnets (142, 142'), flat ferromagnetic layer pole pieces (134, 134'), arcuate (concave faced) ferromagnetic layer pole pieces (150, 150'), and ferromagnetic return paths (118, 118')

Abstract translation: 模拟角度编码器（100）包括杯形的非磁性定子（102），其具有承载至少一个磁感应装置的中心柱（108），并且还包括呈环形的转子（114） 所述转子由所述定子捕获，所述转子承载至少一个永磁体（116），其中所述转子可相对于所述定子旋转。 当转子相对于定子旋转时，入射磁场的角度相对于磁感应装置改变，从而使来自装置的输出以角度位置正弦变化。 优选使用除了简单的六面磁体之外的磁性构造，以便在磁感应装置处获得更均匀的磁场，例如通过利用圆柱形磁体（116a'，116b'），弓形（凹面）磁体（142） ，142'），平坦铁磁层极片（134,134'），弓形（凹面）铁磁层极片（150,150'）和铁磁返回路径（118,118'），

公开(公告)号：EP0939300A1

公开(公告)日：1999-09-01

申请号：EP99200232.9

申请日：1999-01-27

Applicant: Delphi Technologies, Inc.

Inventor： Schroeder, Thaddeus ,  Hile, John Wesley

IPC: G01D5/16 ,  G01D1/18

CPC classification number: G01D5/147 ,  G01D1/18

Abstract: In a magnetoresistive sensor employing a single stage comparator circuit for signal threshold detection, an hysteresis deadband is established substantially proportional to signal amplitude. The sensor includes a transducer comprising at least one magnetoresistive element and an hysteresis circuit also including the at least one magnetoresistive element.

Abstract translation: 在采用用于信号阈值检测的单级比较器电路的磁阻传感器中，基本上与信号幅度成比例地建立滞后死区。 传感器包括包括至少一个磁阻元件和还包括至少一个磁阻元件的磁滞回线的换能器。