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1. 发明申请

US20170184423A1 ABSOLUTE MEASURING LENGTH MEASURING SYSTEM 审中-公开
公开(公告)号：US20170184423A1
公开(公告)日：2017-06-29
申请号：US15387960
申请日：2016-12-22
申请人： Balluff GmbH
发明人： Thomas BURKHARDT , Achim ZERN
IPC分类号： G01D5/249 , G01D5/14
CPC分类号： G01D5/2497 , G01D5/14 , G01D5/2455 , G01D5/2495
摘要： In a length or position measuring system which has an at least locally substantially linear measuring gauge and at least one sensor to be moved relative to the measuring gauge, wherein the measuring gauge includes an incremental track and at least one absolute track and wherein the incremental track and the at least one absolute track have poles arranged in the longitudinal direction of the measuring gauge, the poles of the at least one absolute track form at least two regions in the sensor with different field strengths or signal amplitudes.

2. 发明授权

US09651403B2 Absolute position measurement method, absolute position measurement apparatus and scale 有权
公开(公告)号：US09651403B2
公开(公告)日：2017-05-16
申请号：US14540743
申请日：2014-11-13
申请人： Korea Research Institute of Standards and Science
发明人： Jong-Ahn Kim , Jae-Wan Kim , Tae-Bong Eom , Chu-Shik Kang , Jong-Han Jin
IPC分类号： G01D5/347 , G01D5/245
CPC分类号： G01D5/34707 , G01D5/2455 , G01D5/34746 , G01D5/34776 , G01D5/34792
摘要： Provided are an absolute position measurement method, an absolute position measurement apparatus, and a scale. The scale includes a scale pattern formed by replacing repeatedly arranged pseudo-random-codes with a sequence of a linear feedback shift register of N stages using a first symbol with first width representing a first state and a second symbol with second width representing a second state. The first is divided into two or more first symbol areas of different structures, and the second symbol is divided into two or more second symbol areas of different structures. There is at least one overlap area in which the first symbol and the second symbol overlap each other to have the same structure.

3. 发明授权

US09612136B1 Absolute position encoder including a redundant spatial phase signal 有权
公开(公告)号：US09612136B1
公开(公告)日：2017-04-04
申请号：US14871386
申请日：2015-09-30
申请人： Mitutoyo Corporation
发明人： Ted Staton Cook
IPC分类号： G01D5/347
CPC分类号： G01D5/34776 , G01D5/2455
摘要： An electronic absolute position encoder is provided having a scale, a detector, and a signal processor configured to determine an absolute position of the detector along the scale. The scale includes a signal modulating scale pattern comprising a periodic pattern component and a gradual pattern variation component. The detector includes N spatial phase sensing elements (e.g., conductive windings) and at least one reference sensing element, which is spaced apart along the measuring axis direction by a distance corresponding to an integer multiple of 360 degrees of spatial phase shift relative to a first one of the N spatial phase sensing elements. A first reference signal from the first reference sensing element and a first signal from the first one of the N spatial phase sensing elements include nominally similar signal contributions from the periodic pattern component, and a difference between the two signals is due to a difference in their signal contributions from the gradual pattern variation component. The difference may be used to determine a scale factor M1 for a gradual signal variation exhibited by the detector signals output from the detector.

4. 发明授权

US09561848B2 Apparatus and method for steering angle measurement of an aircraft landing gear and aircraft landing gear 有权
标题翻译：用于飞机起落架和飞机起落架的转向角度测量的装置和方法
公开(公告)号：US09561848B2
公开(公告)日：2017-02-07
申请号：US12976794
申请日：2010-12-22
申请人： Anton Straub , Joerg Meyer , Rainer Fritschi , Michael Kopf
发明人： Anton Straub , Joerg Meyer , Rainer Fritschi , Michael Kopf
IPC分类号： G01B7/30 , B64C25/50 , G01D5/245
CPC分类号： B64C25/50 , G01B7/30 , G01D5/2455
摘要： The present disclosure relates to a method and an apparatus for the contactless measurement of the steering angle of an aircraft landing gear, in particular of a nose landing gear. Furthermore, this present disclosure relates to an aircraft landing gear, in particular a nose landing gear, which allows a contactless measurement of the steering angle.
摘要翻译：本公开涉及一种用于非接触式测量飞机起落架，特别是前起落架的转向角的方法和装置。此外，本公开涉及一种飞行器起落架，特别是前起落架，其允许对转向角进行非接触式测量。

5. 发明授权

US09297321B2 Flexible crank angle position sensing 有权
标题翻译：灵活的曲柄角位置检测
公开(公告)号：US09297321B2
公开(公告)日：2016-03-29
申请号：US13324008
申请日：2011-12-13
申请人： Wayne Hawken , Doyle Kent Stewart
发明人： Wayne Hawken , Doyle Kent Stewart
IPC分类号： G01D5/245 , F02D41/00 , F02D41/22 , F02D41/24 , H03M1/30
CPC分类号： F02D41/009 , F02D41/222 , F02D41/2422 , F02D41/2425 , G01D5/2455 , H03M1/308 , Y02T10/40
摘要： A flexible crank angle position sensing device and data structure is provided. The device allows a user to enter specific data into a data structure relating to an encoder wheel used to determine the position of the crank shaft. The specific data is stored in the device and can be recalled for use in specific engine implementations. Furthermore, a user can enter data to describe other encoder wheels associated with a cam shaft of an engine. A data structure relating to a cam shaft encoder wheel relates to the data structure relating to the crank shaft encoder wheel such that various positional information, regarding both the cam shaft and crank shaft, can be detected by the device.
摘要翻译：提供了一种灵活的曲柄角位置检测装置和数据结构。该装置允许用户将具体数据输入到与用于确定曲轴的位置的编码器轮有关的数据结构中。具体数据存储在设备中，可以被调用以用于特定的引擎实现。此外，用户可以输入数据来描述与发动机的凸轮轴相关联的其它编码器轮。与凸轮轴编码轮相关的数据结构涉及与曲柄轴编码轮相关的数据结构，使得可以通过该装置检测关于凸轮轴和曲轴的各种位置信息。

6. 发明授权

US09047280B2 Apparatus and method for position determination 有权
标题翻译：用于位置确定的装置和方法
公开(公告)号：US09047280B2
公开(公告)日：2015-06-02
申请号：US13760633
申请日：2013-02-06
申请人： SICK STEGMANN GmbH , ATLANTIC ZEISER GmbH
发明人： Stefan Basler , Trevor Stewart , Karl-Heinz Wohlfahrt
IPC分类号： G06F17/30 , G01D5/244 , G01D5/245 , G01D5/347 , G05D1/02
CPC分类号： G06F17/30002 , G01D5/2448 , G01D5/2455 , G01D5/347 , G01D5/34792 , G05D1/0234 , G05D2201/0216
摘要： An apparatus for position determination has an optical scanning unit which is to be moved relative to a surface and which includes an image sensor for detecting light intensity patterns of light which is reflected by the surface. The apparatus furthermore has an electronic processing unit which is associated with the image sensor and configured to determine a traveled movement path and/or a movement speed of the optical scanning unit relative to the surface from a difference between light intensity patterns detected after one another in time. A further processing unit is configured to produce an intensity correlated signal which correlates with the intensity of the light reflected by the surface. An evaluation device is associated with the image sensor and is configured to recognize a graphical code pattern located on the surface with reference to the intensity correlated signal and to read out information from the code pattern.
摘要翻译：用于位置确定的装置具有相对于表面移动的光学扫描单元，并且包括用于检测被表面反射的光的光强度图案的图像传感器。该装置还具有电子处理单元，该电子处理单元与图像传感器相关联并且被配置为根据彼此之间检测的光强度图案之间的差异来确定光学扫描单元相对于表面的移动移动路径和/或移动速度时间。另外的处理单元被配置为产生与由表面反射的光的强度相关的强度相关信号。评估装置与图像传感器相关联，并且被配置为参照强度相关信号来识别位于表面上的图形代码图案，并从代码图案中读出信息。

7. 发明授权

US09040900B2 Two-dimensional absolute encoder and scale therefor 有权
标题翻译：二维绝对编码器及其尺寸
公开(公告)号：US09040900B2
公开(公告)日：2015-05-26
申请号：US13477848
申请日：2012-05-22
申请人： Ko Ishizuka
发明人： Ko Ishizuka
IPC分类号： H01J40/14 , G01D5/347 , G01D5/245
CPC分类号： G01D5/2455 , G01D5/34792
摘要： A two-dimensional absolute encoder includes; a scale on which marks are arranged at predetermined pitches along first and second directions; a detector configured to detect a number of marks arranged in each direction; and a processor configured to obtain an absolute position of the scale in the each direction based on outputs from the detector. Each mark has one of characteristic corresponding to information of a quantized code used for indicating a position in the each direction. The processor is configured to generate a code sequence including the number of codes based on detection of the number of marks and information corresponding to the characteristic, and to obtain an absolute position of the scale in the each direction based on the code sequence.
摘要翻译：二维绝对编码器包括：标记沿着第一和第二方向以预定的间距布置在其上; 检测器，被配置为检测在每个方向上排列的多个标记; 以及处理器，被配置为基于来自检测器的输出来获得每个方向上的刻度的绝对位置。每个标记具有与用于指示每个方向上的位置的量化代码的信息相对应的特征之一。处理器被配置为基于检测到标记的数量和对应于该特性的信息来生成包括代码数的代码序列，并且基于代码序列获得每个方向上的刻度的绝对位置。

8. 发明申请

US20150115940A1 Position Measuring Device 审中-公开
标题翻译：位置测量装置
公开(公告)号：US20150115940A1
公开(公告)日：2015-04-30
申请号：US14528000
申请日：2014-10-30
申请人： DR. JOHANNES HEIDENHAIN GMBH
发明人： Pascal Haible
IPC分类号： G01B7/02 , G01B7/30
CPC分类号： G01B7/023 , G01B7/30 , G01D5/145 , G01D5/2455
摘要： A position measuring device includes a measuring standard that has a first magnetization in a first section for generating a first signal level. The first magnetization is oriented in a first direction, has a first clearance between two adjacent unlike poles, and generates a first maximum of the field strength at the working distance. Furthermore, the measuring standard has a second magnetization in a second section situated next to the first section for generating a second signal level. The second magnetization is oriented in a second direction, has a second clearance between two unlike poles, and generates a first maximum of the field strength at the working distance. The first direction is oriented counter to the second direction, the first clearance is greater than the second clearance, and the first maximum is greater than the second maximum.
摘要翻译：位置测量装置包括在第一部分中具有用于产生第一信号电平的第一磁化的测量标准。第一磁化在第一方向上定向，在两个相邻的不同极之间具有第一间隙，并且在工作距离处产生场强的第一最大值。此外，测量标准在第二部分中具有第二部分，该第二部分位于第一部分的旁边，用于产生第二信号电平。第二磁化在第二方向上定向，在两个不同的极之间具有第二间隙，并且在工作距离处产生场强的第一最大值。第一方向与第二方向相反，第一间隙大于第二间隙，并且第一最大值大于第二最大值。

9. 发明授权

US09018578B2 Adaptable resolution optical encoder having structured illumination and spatial filtering 有权
标题翻译：具有结构化照明和空间滤波的适应性分辨率光学编码器
公开(公告)号：US09018578B2
公开(公告)日：2015-04-28
申请号：US13717586
申请日：2012-12-17
申请人： Mitutoyo Corporation
发明人： Joseph Daniel Tobiason , Eric Herbert Altendorf
IPC分类号： G01D5/34 , G01D5/347 , G01D5/245
CPC分类号： G01D5/34715 , G01D5/2455 , G01D5/34792
摘要： A flexible optical displacement encoder configuration uses a source grating to illuminate a scale with structured light such that light from the scale is modulated with a beat frequency envelope which may have a relatively coarse pitch that matches a desired detector pitch. An imaging configuration provides spatial filtering to remove the high spatial frequencies from the modulation envelope to provide a clean signal in the detected fringe pattern. This combination of elements allows an incremental scale track pattern with a relatively finer pitch (e.g., 4, 5, 8 microns) to provide fringes with a coarser pitch (e.g., 20 microns) at a detector. Various scale resolutions can use a corresponding source grating such that all combinations can produce detector fringes that match the same economical detector component.
摘要翻译：灵活的光学位移编码器配置使用源光栅来用结构化光照射刻度，使得来自刻度的光以具有与期望的检测器间距匹配的相对较粗的间距的拍频包络进行调制。成像配置提供空间滤波以从调制包络去除高空间频率，以在检测到的条纹图案中提供干净的信号。元件的这种组合允许具有较细间距（例如，4,5,8微米）的增量刻度轨道图案在检测器处提供具有较粗间距（例如20微米）的条纹。各种尺度分辨率可以使用相应的光栅光栅，使得所有组合可以产生与相同的经济检测器部件匹配的检测器条纹。

10. 发明申请

US20150070001A1 HIGH RESOLUTION ABSOLUTE ENCODER 有权
标题翻译：高分辨率绝对编码器
公开(公告)号：US20150070001A1
公开(公告)日：2015-03-12
申请号：US14369730
申请日：2012-04-30
申请人： Yves Villaret
发明人： Yves Villaret
IPC分类号： G01D5/12 , G01B7/30 , G01B7/00
CPC分类号： G01D5/145 , G01D5/24476 , G01D5/2455
摘要： The device to measure the absolute rotation angle of a rotating shaft includes a rotating disc, fixed to the shaft. A group of permanent magnets of different sizes and polarities is disposed on a circular track. Further, a group of Hall sensors, fixed to a static part of the device, are disposed on a circular path, in proximity of the rotating disc magnets tracks, and generate electric signals proportional to the strength of the magnetic field produced by the magnets in proximity. The signs of these electric signals are used to calculate a code characteristic of a low resolution absolute angular position. Two analog signals are associated to the obtained code, according to a pre-defined table. The associated analog signal having the closest value to zero is used as an entry to a pre-recorded table containing the correspondent angular position of the shaft.
摘要翻译：用于测量旋转轴的绝对旋转角度的装置包括固定到轴的旋转盘。一组不同尺寸和极性的永磁体被设置在圆形轨道上。此外，固定到装置的静态部分的一组霍尔传感器设置在旋转盘磁体轨道附近的圆形路径上，并产生与由磁体产生的磁场强度成比例的电信号接近。这些电信号的符号用于计算低分辨率绝对角位置的码特性。根据预定义的表，两个模拟信号与获得的代码相关联。具有最接近零值的相关联的模拟信号被用作包含轴的相应角位置的预记录表的入口。

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