公开(公告)号：US20150300847A1

公开(公告)日：2015-10-22

申请号：US14689329

申请日：2015-04-17

Applicant: CANON KABUSHIKI KAISHA

Inventor： Ko Ishizuka

IPC: G01D5/347

CPC classification number: G01D5/34776 ,  G01D5/24466 ,  G01D5/24471 ,  G01D5/24495 ,  G01D5/2455 ,  G01D5/2492 ,  G01D5/2495 ,  G01D5/34715 ,  G01D5/34746 ,  G01D5/34792

Abstract: There is provided an absolute encoder advantageous in accuracy of an output thereof against a defect in a scale thereof. In the absolute encoder, a detector detects a part of an array of marks of the scale, and outputs a data sequence corresponding to the part. A processor stores information indicating a correspondence between each of a plurality of code sequences and an absolute coordinate of motion of the scale, and outputs information of the absolute coordinate based on the data sequence and the information. The processor detects an error of the data sequence, and performs rewriting of the information based on the detected error.

Abstract translation: 提供了一种对于其输出的精度有优势的绝对编码器，其比例尺的缺陷。 在绝对编码器中，检测器检测标尺的标记阵列的一部分，并输出与该部分对应的数据序列。 处理器存储指示多个代码序列中的每一个与标尺的绝对运动坐标之间的对应关系的信息，并且基于数据序列和信息输出绝对坐标的信息。 处理器检测数据序列的错误，并且基于检测到的错误来执行信息的重写。

公开(公告)号：US20150292919A1

公开(公告)日：2015-10-15

申请号：US14685032

申请日：2015-04-13

Applicant: CANON KABUSHIKI KAISHA

Inventor： Makiko Ogasawara

IPC: G01D5/347 ,  G05D3/20

CPC classification number: G01D5/34776 ,  G01D5/24461 ,  G01D5/24495 ,  G01D5/2455 ,  G01D5/2495 ,  G01D5/34715 ,  G01D5/34792 ,  G05D3/20

Abstract: An absolute encoder includes a scale having a sequence of marks, a detector configured to detect a signal corresponding to a plurality of marks of the scale, and a processor configured to obtain an absolute position corresponding to the signal. The processor is configured to select code sequences, from a group of code sequences corresponding to absolute positions, as a candidate group for a code sequence corresponding to the signal, and to select the code sequence corresponding to the signal from the candidate group.

Abstract translation: 绝对编码器包括具有标记序列的刻度，被配置为检测对应于刻度的多个标记的信号的检测器，以及被配置为获得与该信号相对应的绝对位置的处理器。 处理器被配置为从与绝对位置相对应的一组代码序列中选择代码序列作为与该信号相对应的代码序列的候选组，并且选择与来自候选组的信号相对应的代码序列。

公开(公告)号：US20130151042A1

公开(公告)日：2013-06-13

申请号：US13467363

申请日：2012-05-09

Applicant: Bum Sik Kim ,  Tae Hwan Chung ,  Kang Ho Jeong

Inventor： Bum Sik Kim ,  Tae Hwan Chung ,  Kang Ho Jeong

IPC: B60L15/00

CPC classification number: G01D5/2449 ,  G01D5/2495 ,  H02P6/16

Abstract: Disclosed is a technique for compensating for an abnormal output of a resolver. More specifically, a central processing unit (CPU) sets a current motor position angle before compensation θn,ORG as a current motor position angle θn and obtains a motor position change Δθn[rad] between a current sampling [n] and a previous sampling [n−1] and a motor position change Δθn-1[rad] between the previous sampling [n−1] and a more previous sampling [n−2]. Subsequently, a variable A is calculated based on the above angles. The CPU determines whether to perform the compensation by comparing the calculated variable A and a calibration variable K and calculates a current motor position angle for compensation θn[rad]. Finally, the CPU compensates for the absence of motor rotor position information with the calculated current motor position angle for compensation θn[rad].

Abstract translation: 公开了一种用于补偿分解器的异常输出的技术。 更具体地说，中央处理单元（CPU）将补偿前的当前电动机位置角度设置为ORG作为当前电动机位置角度，并且获得当前采样[n]和先前采样[n]之间的电动机位置变化Deltathetan [rad] n-1]和前一个采样[n-1]和更多的先前采样[n-2]之间的电机位置变化Deltathetan-1 [rad]。 随后，基于上述角度计算变量A. CPU通过比较计算出的变量A和校准变量K来确定是否执行补偿，并计算当前的电机位置角度以获得[rad]的补偿。 最后，CPU利用计算出的当前电机位置角补偿电机转子位置信息，以补偿[rad]。

公开(公告)号：US08164350B2

公开(公告)日：2012-04-24

申请号：US12516747

申请日：2007-11-06

Applicant: Max Erick Busse-Grawitz

Inventor： Max Erick Busse-Grawitz

IPC: G01R27/26

CPC classification number: G01D5/2415 ,  G01D5/2495 ,  H05K13/0417

Abstract: The invention relates to a capacitive angle encoder for detecting a rotational position of a rotatable object relative to a stationary object as well as a withdrawable feeder for circuit board component insertion machines, said withdrawable feeder being equipped with an angle encoder according to the invention. The angle encoder comprises a stator that supports first and second transmitting electrodes and first and second receiving electrodes, and a rotor which supports an incremental coupling electrode and an absolute value-coupling electrode. The incremental coupling electrode is designed such that the first electrostatic field is modulated by a change in capacitance in response to a change in the rotational position of the rotor, while the absolute value-coupling electrode is designed such that the second electrostatic field is modulated by a change in capacitance in response to an absolute rotational position of the rotor. A signal processing circuit detects the first and second modulated electrostatic field and determines a measured value for the position in response to the detected field. The at least one first and second transmitting electrode and the at least one first and second receiving electrode are coplanar to one another.

Abstract translation: 本发明涉及一种用于检测可旋转物体相对于静止物体的旋转位置的电容角度编码器以及用于电路板部件插入机器的抽出式馈送器，所述可抽出馈线装备有根据本发明的角度编码器。 角度编码器包括支撑第一和第二发射电极和第一和第二接收电极的定子，以及支撑增量耦合电极和绝对值耦合电极的转子。 增量耦合电极被设计成使得响应于转子的旋转位置的变化，第一静电场被电容的变化调制，而绝对值耦合电极被设计成使得第二静电场被 响应于转子的绝对旋转位置的电容的变化。 信号处理电路检测第一和第二调制静电场，并根据检测到的场确定位置的测量值。 所述至少一个第一和第二发射电极和所述至少一个第一和第二接收电极彼此共面。

公开(公告)号：US20120026321A1

公开(公告)日：2012-02-02

申请号：US13262663

申请日：2009-04-03

Applicant: David Hasler ,  Peter Masa ,  Pascal Heim ,  Edoardo Franzi

Inventor： David Hasler ,  Peter Masa ,  Pascal Heim ,  Edoardo Franzi

IPC: H04N7/18

CPC classification number: G01D5/34746 ,  G01D5/24438 ,  G01D5/24452 ,  G01D5/24476 ,  G01D5/2449 ,  G01D5/2495 ,  G01D5/34792 ,  H03M1/0678 ,  H03M1/202 ,  H03M1/282

Abstract: A one-dimension position measurement system includes: a first ruler having a first one-dimension binary code si applied thereon, a camera for acquiring a picture of a portion of the code si, the portion having a length of I bits, and some processing elements. Each codeword of length I of the one-dimension code si is unique within the whole code si A codeword ai is read from the acquired picture, and the processing elements are implemented for computing an absolute position p of the codeword ai of the code si from: (I). An adhoc interpolation method is used to obtain a precision way below the distance between two bits of the codewords. The code si may be applied on the ruler by using some geometric primitives, a geometric primitive for encoding a “1” being different from a geometric primitive for encoding a “0”, both having the same horizontal projection. The horizontal projection is then used for fine interpolation, achieving nanometre-scale resolution.

Abstract translation: 一维位置测量系统包括：具有施加在其上的第一一维二进制码si的第一标尺，用于获取码si的一部分的图像的相机，具有I比特长度的部分以及一些处理 元素。 一维码si的长度为I的每个码字在整个码si内是唯一的。从所获取的图像中读取码字ai，并且实现处理元件以计算码si的码字ai的绝对位置p ： （一世）。 使用自适应插值方法来获得低于码字的两位之间的距离的精确方式。 代码si可以通过使用一些几何图元应用于标尺上，几何图元用于编码“1”与用于编码“0”的几何基元不同的几何图元，两者具有相同的水平投影。 然后将水平投影用于精细插值，实现纳米级分辨率。

公开(公告)号：US20110218761A1

公开(公告)日：2011-09-08

申请号：US13126605

申请日：2009-10-01

Applicant: Christoph Lingk

Inventor： Christoph Lingk

IPC: G06F15/00

CPC classification number: G01D5/3473 ,  G01D5/2455 ,  G01D5/2495 ,  G01D5/2497

Abstract: An absolute angle coding that includes a first cyclically continued code sequence that cyclically continues a first code sequence a multiple number of times, wherein the first code sequence is disposed within 360° and includes a first succession of code elements that defines a first angle sector. The code further includes a second cyclically continued code sequence that cyclically continues a second code sequence a multiple number of times, wherein the second code sequence is disposed within 360° and includes a second succession of code elements that defines a second angle sector, wherein the first cyclically continued sequence and the second cyclically continued code sequence in combination unambiguously absolutely encode the 360°. The first angle sector is not equal to the second angle sector, and at least one of the second code sequences of the second cyclically continued code sequence is embodied only partially within said 360° and with a succeeding second code sequence forms a joint.

Abstract translation: 绝对角度编码包括循环地继续第一代码序列多次的第一循环连续代码序列，其中第一代码序列被设置在360°内，并且包括定义第一角度扇区的第一序列代码元素。 代码还包括周期性地继续第二代码序列多次的第二周期性连续代码序列，其中第二代码序列设置在360°内，并且包括限定第二角度扇区的第二序列代码元素，其中， 第一个循环连续序列，第二个循环连续的码序列组合明确绝对编码360°。 第一角度扇区不等于第二角度扇区，并且第二循环连续代码序列的第二代码序列中的至少一个仅部分地体现在所述360°内，并且随后的第二代码序列形成关节。

公开(公告)号：US06512589B1

公开(公告)日：2003-01-28

申请号：US09716338

申请日：2000-11-20

Applicant: Anton Rodi

Inventor： Anton Rodi

IPC: G01B1114

CPC classification number: G01D5/2495 ,  G01D5/2455

Abstract: A position of a sensing head, which contains at least one sensor, is measured with respect to a scale embodiment which contains a linear code. The measurement is performed such that a predefined resolution is achieved. Firstly, an absolute value of an initial position is determined with at least the predefined resolution, for example by evaluating the signals from all the sensors at a standstill. During the measurement, the sensing head and the scale embodiment are moved relative to each other. Fewer sensors are used than would be needed at a standstill, for example, only a single sensor is used. The information needed to achieve the predefined resolution is obtained from sensor signals of the relative movement, which are derived from the linear code. In this way, a signal for the absolute position and the number of revolutions is determined, even at high speeds. The limits set by signal processing and signal transmission are much higher than in the case of known measurement transmitters.

Abstract translation: 相对于包含线性代码的标尺实施例来测量包含至少一个传感器的感测头的位置。 执行测量使得实现预定分辨率。 首先，通过至少预定义的分辨率来确定初始位置的绝对值，例如通过在静止时评估来自所有传感器的信号。 在测量期间，感测头和标尺实施例相对于彼此移动。 使用的传感器比在静止时需要的传感器少，例如仅使用单个传感器。 实现预定义分辨率所需的信息是从相对运动的传感器信号获得的，该信号是从线性码导出的。 以这种方式，即使在高速下也可以确定绝对位置和转数的信号。 由信号处理和信号传输设定的极限值远高于已知测量发射器的情况。

公开(公告)号：US06483104B1

公开(公告)日：2002-11-19

申请号：US09068969

申请日：1999-02-11

Applicant: Jurgen Benz ,  Achim Ruff

Inventor： Jurgen Benz ,  Achim Ruff

IPC: G01D534

CPC classification number: H03M1/282 ,  G01D5/2492 ,  G01D5/2495 ,  G01D5/34715 ,  G01D5/34776

Abstract: It is known that CCD lines can be used to produce fast angle of rotation sensors, where the light distribution controlled by a code disk is measured with a pixel line and converted into corresponding digital values by an analyzer unit. The object of the present invention is to create a position sensor with a high resolution. For this purpose, the invention proposes several measures, such as pulsed operation of the light source and using a digital code for the code element. Advantageous embodiments involve selecting a maximum code and more accurate determination of the approximate position value thus obtained from the resulting digital value. A further improvement in measurement accuracy can be achieved by shifting the code track or several code tracks arranged radially one inside the other.

Abstract translation: 已知CCD线可用于产生快速旋转传感器，其中由码盘控制的光分布由像素线测量并通过分析器单元转换成相应的数字值。 本发明的目的是创建一种具有高分辨率的位置传感器。 为此，本发明提出了若干措施，例如光源的脉冲操作和代码元件的数字代码。 有利的实施例涉及从所得到的数字值中选择最大代码和更准确地确定由此获得的近似位置值。 通过将编码轨迹或径向排列在另一个内的多个编码轨道移位可以实现测量精度的进一步改进。

公开(公告)号：US6271661B2

公开(公告)日：2001-08-07

申请号：US26870299

申请日：1999-03-16

Applicant: MITUTOYO CORP

Inventor： ANDERMO NILS INGVAR ,  MASRELIEZ KARL G ,  STEINKE KURT E

IPC: G01B7/00 ,  G01D5/245 ,  G01D5/249 ,  C08C19/06 ,  G01B7/14 ,  G01D5/20 ,  H03M1/22

CPC classification number: G01D5/2495

Abstract: An absolute position transducer system has two members movable relative to each other and includes a code track transducer and at least one fine wavelength transducer. The code track is arranged to form a sequential pattern of base-N code words, where N is greater than two (i.e., non-binary). Each sequential non-binary code word identifies an absolute position of one member with respect to the other at a first resolution. Alternatively, the code track is arranged to form a pseudo-random non-binary code word pattern. In this case, the transducer system compares a non-binary code word with a look-up table to determine an absolute position of one member with respect to the other at a first resolution. In order to generate a non-binary code word pattern, code track transducer employs different-sized flux disrupters, different-sized flux enhancers, or a combination of flux disrupters and enhancers.

Abstract translation: 绝对位置传感器系统具有可相对于彼此移动的两个构件，并且包括码轨换能器和至少一个精细波长换能器。 代码轨道被布置成形成基本N个码字的顺序模式，其中N大于2（即，非二进制）。 每个顺序非二进制码字以第一分辨率识别一个成员相对于另一个成员的绝对位置。 或者，代码轨道被布置成形成伪随机非二进制码字模式。 在这种情况下，换能器系统将非二进制代码字与查找表进行比较，以在第一分辨率下确定一个成员相对于另一个成员的绝对位置。 为了生成非二进制码字模式，代码轨道传感器采用不同大小的通量扰乱器，不同大小的通量增强器，或通量破坏器和增强器的组合。

公开(公告)号：US20170167896A1

公开(公告)日：2017-06-15

申请号：US15372478

申请日：2016-12-08

Applicant: Balluff GmbH

Inventor： Thomas BURKHARDT

IPC: G01D5/249

CPC classification number: G01D5/2497 ,  G01D5/2454 ,  G01D5/2455 ,  G01D5/2495

Abstract: In a length or position measuring system which has an at least locally substantially linear measuring gauge and at least one sensor able 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 pole pairs arranged in the longitudinal direction of the measuring gauge, it is provided in particular that at least one pole pair of the absolute track is phase-shifted relative to a corresponding pole pair of the incremental track.