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1.发明授权公开(公告)号：US08493572B2
公开(公告)日：2013-07-23
申请号：US12774686
申请日：2010-05-05
IPC分类号： G01B11/14
CPC分类号： G01D5/24476 , G01D5/34715
摘要： An encoder configuration comprises an illumination portion, a scale comprising a scale track, and a signal processing electronics. The signal processing electronics may include a detector comprising a first set of three detector sub-portions that provide a first set of signals comprising three respective sub-portion signal subsets that have nominally the same signal characteristics when the scale track is not contaminated or defective. The processing electronics analyze the first set of signals and identify a least-similar sub-portion signal subset that has a corresponding signal characteristic value that is least similar to comparable signal characteristic values associated with more-similar sub-portion signal subsets of the first set of signals. Position measurements are based on valid signals including a plurality of the more-similar sub-portion signal subsets and not including the least-similar sub-portion signal subset if it is significantly different. Accurate measurement may be provided despite significant scale contamination or defects.
摘要翻译： 编码器配置包括照明部分，包括刻度轨迹的刻度和信号处理电子器件。 信号处理电子设备可以包括检测器，该检测器包括第三组检测器子部分，其提供第一组信号，该第一组信号包括三个相应的子部分信号子集，当标尺轨迹未被污染或有缺陷时，这些子部分名义上具有相同的信号特征。 处理电子器件分析第一组信号并且识别具有对应的信号特征值的最不相似的子部分信号子集，该对应信号特征值与与第一组的更相似的子部分信号子集相关联的可比信号特征值最不相似 的信号。 位置测量基于包括多个更相似的子部分信号子集的有效信号，并且如果它们显着不同，则不包括最不相似的子部分信号子集。 可能会提供准确的测量，尽管有严重的污染或缺陷。
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公开(公告)号：US07239130B1
公开(公告)日：2007-07-03
申请号：US11492366
申请日：2006-07-24
IPC分类号： G01B7/14
CPC分类号： G01D5/2086
摘要： An induced current position transducer reduces spatial phase errors associated with layout constraints. Each winding of the transducer comprises a set of loops arranged in hypothetical basic polarity zones that alternate along the measuring axis and a set of loops arranged in hypothetical offset polarity zones that are offset from the basic polarity zones along the measuring axis. Hypothetical offset zones are defined at positions where basic and offset polarity zones that have opposite polarities overlap. Due to layout constraints, each winding may have an offset zone including an unbalancing coupling area that differs from the coupling area in the majority of offset zones. The windings are configured such that the amount of unbalanced coupling area included in the offset zones of each respective winding is approximately the same for each of the windings, making their respective phase errors approximately the same.
摘要翻译： 感应电流位置传感器减少与布局约束相关联的空间相位误差。 换能器的每个绕组包括布置在沿着测量轴交替的假想基本极性区域中的一组环路，以及布置在沿着测量轴线的基本极性区域偏移的假想偏移极性区域中的一组环路。 假设的偏移区域定义在具有相反极性的基极和偏置极性区域重叠的位置。 由于布局约束，每个绕组可以具有偏移区域，该偏移区域包括与多数偏移区域中的耦合区域不同的不平衡耦合区域。 绕组被配置为使得每个绕组的偏移区域中包括的不平衡耦合区域的量对于每个绕组大致相同，使得它们各自的相位误差大致相同。
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公开(公告)号：US07307736B2
公开(公告)日：2007-12-11
申请号：US10815893
申请日：2004-03-31
IPC分类号： G01B11/14
CPC分类号： G01D5/262 , G01B11/002 , G01D5/26 , G01D5/347
摘要： A position sensor using a novel structured light generating scale or target member is provided. An imaging array is capable of measuring the relative translation and orientation of the structured light generating scale or target member in X, Y, Z, yaw, pitch, and roll (“6D”) simultaneously, and with high precision. The target member includes an array of lenses that provide an array of structured light patterns that diverge, converge, or both, to change the size of the corresponding structured light image as a function of the “Z” coordinate of the relative position, in various embodiments. The X-Y position of each individual structured light image on the imaging array varies with the relative X-Y position of the structured light generating target member, and the shape of structured light image changes as a function of the relative angular orientation. Accordingly, three or more structured light images analyzed in the same image are usable to determine a 6D measurement between the structured light generating target member and the array detector. X and Y displacement of the target member can be accumulated by known methods and the other 6D measurement components are absolute measurements at any position.
摘要翻译： 提供了一种使用新型结构光产生标尺或目标构件的位置传感器。 成像阵列能够以高精度同时测量X，Y，Z，偏转，俯仰和滚动（“6D”）中的结构光产生标尺或目标构件的相对平移和取向。 目标构件包括透镜阵列，其提供发散，会聚或两者的结构光图案阵列，以根据相对位置的“Z”坐标改变相应结构光图像的大小，以各种方式 实施例。 成像阵列上的每个单独的结构光图像的X-Y位置随着结构化光产生目标构件的相对X-Y位置而变化，并且结构化光图像的形状作为相对角度取向的函数而变化。 因此，在相同图像中分析的三个或更多个结构光图像可用于确定结构化光产生目标构件和阵列检测器之间的6D测量。 目标构件的X和Y位移可以通过已知方法积累，其他6D测量分量是任何位置的绝对测量。
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4.发明授权Optical path array and angular filter for translation and orientation sensing 有权用于平移和定向感测的光路阵列和角度滤波器公开(公告)号：US07075097B2
公开(公告)日：2006-07-11
申请号：US10808849
申请日：2004-03-25
IPC分类号： G01N21/00
CPC分类号： G01D5/34723 , G01D5/268
摘要： A position sensor using a novel optical path array (OPA) element, an angle-selective spatial filter, and an imaging array is capable of measuring the translation and orientation relative to a target member in X, Y, Z, yaw, pitch, and roll (“6D”) simultaneously, and with high precision. A target member includes an array of target points surrounded by a contrasting surface. The position sensor uses the OPA element in combination with the angle-selective spatial filter in a target point imaging arrangement such that the imaging array of the position sensor only receives light rays that enter the OPA element according to an operable cone angle α. Accordingly, each target point generally produces a ring-shaped image having a size on the imaging array that varies with the Z position of each target point. The X-Y position of each target point image on the imaging array varies with the X-Y position of each target point. Accordingly, three or more target point images analyzed in the same image are usable to determine a 6D measurement relative to the target member. X and Y displacement of the target member can be accumulated by known methods and the other 6D measurement components are absolute measurements at any position.
摘要翻译： 使用新型光路阵列（OPA）元件，角度选择性空间滤波器和成像阵列的位置传感器能够测量相对于目标构件在X，Y，Z，偏航，俯仰和 滚动（“6D”），并具有高精度。 目标成员包括由对比表面包围的目标点阵列。 位置传感器将OPA元件与目标点成像布置中的角度选择性空间滤波器组合使用，使得位置传感器的成像阵列仅接收根据可操作锥角α进入OPA元件的光线。 因此，每个目标点通常产生具有随着每个目标点的Z位置而变化的成像阵列上的尺寸的环形图像。 成像阵列上的每个目标点图像的X-Y位置随着每个目标点的X-Y位置而变化。 因此，在相同图像中分析的三个或更多个目标点图像可用于确定相对于目标成员的6D测量。 目标构件的X和Y位移可以通过已知方法积累，其他6D测量分量是任何位置的绝对测量。
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公开(公告)号：US08309906B2
公开(公告)日：2012-11-13
申请号：US12813438
申请日：2010-06-10
CPC分类号： G01D5/34784 , G01D5/24476 , G01D5/2448
摘要： An encoder configuration comprises a dual-modulation scale track pattern that provides a first intensity modulation component for producing periodic signals, and a second intensity modulation component for producing a long-range absolute signal. The dual-modulation scale track pattern increases the range-to-resolution ratio of the encoder without the use of additional scale tracks that would increase the width of the encoder components. The long-range signal may be encoded in the dual-modulation scale track pattern either by varying certain dimensions of pattern elements included in the scale track or by superimposing a layer including an optical density variation along on the track on pattern elements of similar areas. In either case, the net offset and/or amplitude levels of the associated signals are modified along the scale track. These modified offset and/or amplitude levels provide the basis for the long-range absolute signal.
摘要翻译： 编码器配置包括提供用于产生周期性信号的第一强度调制分量的双调制比例轨道图案，以及用于产生远程绝对信号的第二强度调制分量。 双调制刻度轨道图案增加了编码器的分辨率范围，而不需要增加编码器部件宽度的附加刻度轨迹。 长范围信号可以通过改变包括在刻度轨道中的图案元素的某些维度或者通过在相似区域的图案元素上沿轨道上叠加包含光密度变化的层来在双调制尺度轨道图案中编码。 在任一情况下，相关联信号的净偏移和/或幅度电平沿着标尺轨道被修改。 这些修改的偏移和/或幅度电平提供了远程绝对信号的基础。
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公开(公告)号：US20110304482A1
公开(公告)日：2011-12-15
申请号：US12813438
申请日：2010-06-10
IPC分类号： H03M1/22
CPC分类号： G01D5/34784 , G01D5/24476 , G01D5/2448
摘要： An encoder configuration comprises a dual-modulation scale track pattern that provides a first intensity modulation component for producing periodic signals, and a second intensity modulation component for producing a long-range absolute signal. The dual-modulation scale track pattern increases the range-to-resolution ratio of the encoder without the use of additional scale tracks that would increase the width of the encoder components. The long-range signal may be encoded in the dual-modulation scale track pattern either by varying certain dimensions of pattern elements included in the scale track or by superimposing a layer including an optical density variation along on the track on pattern elements of similar areas. In either case, the net offset and/or amplitude levels of the associated signals are modified along the scale track. These modified offset and/or amplitude levels provide the basis for the long-range absolute signal.
摘要翻译： 编码器配置包括提供用于产生周期性信号的第一强度调制分量的双调制比例轨道图案，以及用于产生远程绝对信号的第二强度调制分量。 双调制刻度轨道图案增加了编码器的分辨率范围，而不需要增加编码器部件宽度的附加刻度轨迹。 长范围信号可以通过改变包括在刻度轨道中的图案元素的某些维度或者通过在相似区域的图案元素上沿轨道上叠加包含光密度变化的层来在双调制尺度轨道图案中编码。 在任一情况下，相关联信号的净偏移和/或幅度电平沿着标尺轨道被修改。 这些修改的偏移和/或幅度电平提供了远程绝对信号的基础。
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7.发明申请公开(公告)号：US20110273725A1
公开(公告)日：2011-11-10
申请号：US12774686
申请日：2010-05-05
CPC分类号： G01D5/24476 , G01D5/34715
摘要： An encoder configuration comprises an illumination portion, a scale comprising a scale track, and a signal processing electronics. The signal processing electronics may include a detector comprising a first set of three detector sub-portions that provide a first set of signals comprising three respective sub-portion signal subsets that have nominally the same signal characteristics when the scale track is not contaminated or defective. The processing electronics analyze the first set of signals and identify a least-similar sub-portion signal subset that has a corresponding signal characteristic value that is least similar to comparable signal characteristic values associated with more-similar sub-portion signal subsets of the first set of signals. Position measurements are based on valid signals including a plurality of the more-similar sub-portion signal subsets and not including the least-similar sub-portion signal subset if it is significantly different. Accurate measurement may be provided despite significant scale contamination or defects.
摘要翻译： 编码器配置包括照明部分，包括刻度轨迹的刻度和信号处理电子器件。 信号处理电子设备可以包括检测器，该检测器包括第三组检测器子部分，其提供第一组信号，该第一组信号包括三个相应的子部分信号子集，当标尺轨迹未被污染或有缺陷时，这些子部分名义上具有相同的信号特征。 处理电子器件分析第一组信号并且识别具有对应的信号特征值的最不相似的子部分信号子集，该对应信号特征值与与第一组的更相似的子部分信号子集相关联的可比信号特征值最不相似 的信号。 位置测量基于包括多个更相似的子部分信号子集的有效信号，并且如果它们显着不同，则不包括最不相似的子部分信号子集。 可能会提供准确的测量，尽管有严重的污染或缺陷。
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