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公开(公告)号：US06489761B1
公开(公告)日：2002-12-03
申请号：US09678209
申请日：2000-09-05
IPC分类号： G01B730
CPC分类号： G01D5/145
摘要： An analog angle encoder includes a non-magnetic stator which is cup-shaped, having a central post carrying at least one magnetosensitive device, and further including a rotor in the form of a ring captured by the stator, the rotor carrying at least one permanent magnet, 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, arcuate (concave faced) magnets, flat ferromagnetic layer pole pieces, arcuate (concave faced) ferromagnetic layer pole pieces, and ferromagnetic return paths.
摘要翻译： 模拟角度编码器包括杯形的非磁性定子，其具有承载至少一个磁感应装置的中心柱，并且还包括由定子捕获的环形形式的转子，转子承载至少一个永磁体 磁体，其中转子可相对于定子旋转。 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，弓形（凹面）磁体，扁平铁磁层极片，弓形（ 凹面）铁磁层极片和铁磁返回路径。
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2.发明授权Analog angle encoder having a single piece magnet assembly surrounding an air gap 失效模拟角度编码器具有围绕气隙的单片磁体组件公开(公告)号：US06614223B2
公开(公告)日：2003-09-02
申请号：US09929149
申请日：2001-08-14
申请人： Thaddeus Schroeder , Bruno Patrice Bernard Lequesne , Avoki M. Omekanda , Steven Douglas Thomson
发明人： Thaddeus Schroeder , Bruno Patrice Bernard Lequesne , Avoki M. Omekanda , Steven Douglas Thomson
IPC分类号： G01B230
CPC分类号： G01D5/145
摘要： An analog angle encoder having a simply constructed magnet assembly, wherein rotation of a magnetic field relative to a magnetosensitive device provides a varying output of the magnetosensitive device that varies sinusoidally with the angle of relative rotation. The simply constructed magnet assembly is of a closed-path geometry composed of a single piece of magnetic material wherein only a first portion thereof is magnetized for providing the aforesaid magnetic field for the sensor. The remaining portion of the magnet material (the second portion) remains unmagnetized and does not substantially influence the magnetic field produced by the first portion any more than, for example, air would cause.
摘要翻译： 具有简单构造的磁体组件的模拟角度编码器，其中磁场相对于磁敏装置的旋转提供了与相对旋转角正弦变化的磁敏装置的变化的输出。 简单构造的磁体组件是由单个磁性材料组成的闭路几何形状，其中只有其第一部分被磁化以提供用于传感器的上述磁场。 磁体材料的剩余部分（第二部分）保持不磁化，并且基本上不影响第一部分产生的比例如空气将产生的磁场。
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3.发明授权Target wheel sensor assembly for producing an asymmetric signal and for determining the direction of motion of the target wheel based on the signal shape 失效目标轮传感器组件，用于产生不对称信号并且用于基于信号形状来确定目标车轮的运动方向公开(公告)号：US06650110B2
公开(公告)日：2003-11-18
申请号：US09873871
申请日：2001-06-04
IPC分类号： G01B730
CPC分类号： G01B7/315
摘要： A target wheel sensor assembly includes a sensor that is placed near a target wheel. The sensor includes a magnet to create a flux and a sensing element to sense changes in the flux as the target wheel rotates. The target wheel is alternatingly formed with multiple teeth and multiple slots. Each tooth includes a flat portion that is parallel to the bottom of the sensor and a chamfered portion contiguous to the flat portion. The chamfered portion forms an angle, &agr;, with the bottom of the sensor. As the target wheel rotates, the shape of the teeth in conjunction with the slots cause the sensor to output an asymmetric signal. The shape of the signal is used to determine the direction of motion of the target wheel.
摘要翻译： 目标轮传感器组件包括放置在目标轮附近的传感器。 传感器包括用于产生磁通的磁体和感测元件，以在目标轮旋转时感测磁通量的变化。 目标轮交替地形成有多个齿和多个槽。 每个齿包括平行于传感器底部的平坦部分和与平坦部分邻接的倒角部分。 倒角部分与传感器的底部形成一个角度α。 当目标轮旋转时，齿的形状与狭槽结合使得传感器输出不对称信号。 信号的形状用于确定目标车轮的运动方向。
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4.发明授权Target wheel sensor assembly for determining position and direction of motion of a rotating target wheel 失效用于确定旋转目标轮的运动的位置和方向的目标轮传感器组件公开(公告)号：US06639399B2
公开(公告)日：2003-10-28
申请号：US09777764
申请日：2001-02-06
IPC分类号： G01B730
摘要： A target wheel sensor assembly includes a target wheel, a magnet, and a sensing element placed therebetween. The magnet and the sensing element are configured so that as the target wheel rotates the sensing element outputs an asymmetric signal. This asymmetric signal is used to determine the position of the target wheel as it rotates and the direction of motion of the target wheel.
摘要翻译： 目标轮传感器组件包括目标轮，磁体和放置在其间的感测元件。 磁体和感测元件构造成使得当目标轮旋转时，感测元件输出不对称信号。 该不对称信号用于确定目标车轮旋转时的位置和目标车轮的运动方向。
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公开(公告)号：US06577123B2
公开(公告)日：2003-06-10
申请号：US09873857
申请日：2001-06-04
IPC分类号： G01B714
CPC分类号： G01D5/147
摘要： A linear position sensor assembly includes a moving target and a stationary magnet. A magnetic sensor is placed adjacent to the magnet and senses changes in the magnetic flux density caused by the target moving within a magnetic field generated by the stationary magnet. The magnetic sensor outputs a signal that is linear over nearly the entire length of the target.
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公开(公告)号：US06992480B2
公开(公告)日：2006-01-31
申请号：US10682474
申请日：2003-10-09
申请人： Thaddeus Schroeder , Bruno P. B. Lequesne , Avoki M. Omekanda , Thomas Wolfgang Nehl , Rassem Ragheb Henry
发明人： Thaddeus Schroeder , Bruno P. B. Lequesne , Avoki M. Omekanda , Thomas Wolfgang Nehl , Rassem Ragheb Henry
IPC分类号： G01B7/14
CPC分类号： G01D5/24404
摘要： A magnetic sensor provides an output voltage range having first and second linear slopes. Proper selection of magnetic sensor dimensions enables changes in magnetic flux density upon the passage of at least one tooth and one slot of a target wheel past the magnetic sensor to be represented as a linear magnetic sensor output comprised of at least one linear range whereby linear interpolation of position is possible with appropriate signal processing algorithms.
摘要翻译： 磁传感器提供具有第一和第二线性斜率的输出电压范围。 正确选择磁传感器尺寸使得能够在目标轮的至少一个齿和一个槽通过磁性传感器通过之后磁通密度的变化被表示为包括至少一个线性范围的线性磁传感器输出，从而线性插值 的位置是可能的与适当的信号处理算法。
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7.发明授权Magnetic sensor array configuration for measuring a position and method of operating same 失效用于测量位置的磁传感器阵列配置及其操作方法公开(公告)号：US06992479B2
公开(公告)日：2006-01-31
申请号：US10356457
申请日：2003-01-31
IPC分类号： G01B7/14
CPC分类号： G01D5/145
摘要： A magnetic position sensor for measuring a position of a ferromagnetic target over a range. The sensor comprises a magnet at least as long as the range and a sensor array mounted upon a surface of the magnet. The array is at least as long as the range and includes a plurality of sensing elements mounted a fixed distance from the surface of the magnet. The magnet length and the fixed distance have values such that a set of relatively constant values, preferably values of magnetic flux density, is measurable in the sensor array in the absence of the ferromagnetic target. A method of making a position sensor is also disclosed, as is a method of measuring the position of a ferromagnetic target over a range.
摘要翻译： 一种磁性位置传感器，用于在一个范围内测量铁磁性目标的位置。 传感器包括至少与该范围一样长的磁体和安装在磁体表面上的传感器阵列。 该阵列至少与该范围一样长，并且包括从磁体表面安装固定距离的多个感测元件。 磁体长度和固定距离具有这样的值，使得在不存在铁磁性目标的情况下，可以在传感器阵列中测量一组相对恒定的值，优选磁通密度值。 还公开了一种制造位置传感器的方法，以及在一个范围上测量铁磁性靶的位置的方法。
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8.发明授权Sensor assembly combining signals with enhanced asymmetry for detecting direction of rotation of an object 失效传感器组合组合具有增强的不对称性的信号以检测物体的旋转方向公开(公告)号：US07009384B2
公开(公告)日：2006-03-07
申请号：US10453041
申请日：2003-06-03
摘要： A target wheel sensor assembly includes a target wheel, a magnet, and two or more sensing elements placed therebetween. The magnet and the sensing elements are configured so that as the target wheel rotates each of the sensing elements outputs a respective asymmetric signal relative to the direction of rotation of the target wheel or an object mechanically connected to the wheel. Each of these asymmetric signals is differentially combined with one another to determine the direction of motion of the target wheel, and, if optionally desired, the position of the target wheel.
摘要翻译： 目标轮传感器组件包括目标轮，磁体和放置在它们之间的两个或更多个传感元件。 磁体和感测元件构造成使得当目标轮旋转每个感测元件时，相对于目标轮或机械地连接到车轮的物体的旋转方向输出相应的不对称信号。 这些不对称信号中的每一个彼此差分地组合以确定目标车轮的运动方向，并且如果可选地，确定目标车轮的位置。
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公开(公告)号：US07210360B2
公开(公告)日：2007-05-01
申请号：US10864231
申请日：2004-06-09
申请人： Thaddeus Schroeder , Shaotang Chen , Avoki M Omekanda , Thomas W Nehl , Bruno Lequesne , Mohammad S Islam
发明人： Thaddeus Schroeder , Shaotang Chen , Avoki M Omekanda , Thomas W Nehl , Bruno Lequesne , Mohammad S Islam
IPC分类号： G01L3/02
CPC分类号： G01L3/104
摘要： An apparatus measures relative displacement between a first end and a second end of a shaft. The first and second ends being centered on a shaft axis. The apparatus includes first and second ferromagnetic plates. The first ferromagnetic plate has a first side and a second side and is connected to the first end. The first ferromagnetic plate is centered on the shaft axis and has a plurality of ferromagnetic teeth extending from the first side and in a first direction parallel to the shaft. The second ferromagnetic plate has a first side and a second side and is connected to the second end. The second ferromagnetic plate is centered on the shaft axis. The first and second ferromagnetic plates form a gap. The apparatus further includes a plurality of magnets having a magnetic field and a sensing device. The magnets are coupled to the first side of the second ferromagnetic plate. The sensing device is disposed within the gap for sensing a magnetic flux of the magnetic field.
摘要翻译： 一种装置测量轴的第一端和第二端之间的相对位移。 第一和第二端以轴的轴为中心。 该装置包括第一和第二铁磁板。 第一铁磁板具有第一侧和第二侧，并连接到第一端。 第一铁磁板以轴线为中心，并且具有多个从第一侧延伸的铁磁齿和平行于轴的第一方向。 第二铁磁板具有第一侧和第二侧，并连接到第二端。 第二铁磁板以轴的轴为中心。 第一和第二铁磁板形成间隙。 该装置还包括具有磁场和感测装置的多个磁体。 磁体与第二铁磁板的第一侧耦合。 感测装置设置在间隙内以感测磁场的磁通量。
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公开(公告)号：US06894486B2
公开(公告)日：2005-05-17
申请号：US10675694
申请日：2003-09-30
摘要： A magnetic sensor has magnetically sensitive element located at a side surface, instead of the bottom surface, of a bias magnet, the magnet being located adjacent a magnetic target wheel, wherein the bias magnet is magnetized parallel to the direction of motion of the teeth/slots of the target wheel. The output may be of a single or double frequency. Sampling of output slope can provide information regarding direction of movement of the target wheel. In a second embodiment the bias magnet is magnetized perpendicular to the movement.
摘要翻译： 磁传感器具有位于偏置磁体的侧表面而不是底表面的磁敏元件，磁体位于磁性目标轮附近，其中偏置磁体被平行于齿/ 目标轮的槽。 输出可以是单频或双频。 输出斜率的采样可以提供目标车轮的运动方向信息。 在第二实施例中，偏置磁体垂直于该运动被磁化。
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