Absolute encoder
    3.
    发明授权
    Absolute encoder 失效
    绝对编码器

    公开(公告)号:US5565864A

    公开(公告)日:1996-10-15

    申请号:US299445

    申请日:1994-09-01

    IPC分类号: G01D5/249 H03M1/28 H03M1/22

    CPC分类号: G01D5/2492 H03M1/282

    摘要: An encoder includes a code plate, a detector, a transformer, and first and second calculators. The code plate is formed with an absolute pattern including a plurality of bit patterns, each bit pattern formed by a predetermined number of bits and representing one absolute position. The detector moves relatively with respect to the code plate, has a plurality of detecting elements arranged to be opposed to the predetermined number of bits, and reads the bit pattern from the absolute pattern to output a bit pattern signal representing the bit pattern. The transformer can transform only specific bit pattern signals corresponding to specific bit patterns out of a plurality of the bit pattern signals corresponding to the plurality of bit patterns, into the absolute positions. The first calculator calculates a relative, positional relation between the bit pattern corresponding to the bit pattern signal, read from the detector, and the specific bit pattern. The second calculator calculates information indicating a position of the code plate relative to the detector, based on the absolute position obtained by the transformer and the relative, positional relation obtained by the first calculator.

    摘要翻译: 编码器包括代码板,检测器,变压器以及第一和第二计算器。 码板形成有包括多个位模式的绝对模式,每个位模式由预定位数形成并表示一个绝对位置。 检测器相对于代码板移动,具有被布置为与预定数量的位相对的多个检测元件,并且从绝对图案读取位模式以输出表示位模式的位模式信号。 变压器只能将对应于多个位模式的多个位模式信号中的与特定位模式相对应的特定位模式信号转换成绝对位置。 第一计算器计算从检测器读取的与位模式信号相对应的位模式与特定位模式之间的相对位置关系。 第二计算器基于由变压器获得的绝对位置和由第一计算器获得的相对位置关系,计算指示代码板相对于检测器的位置的信息。

    Absolute encoder having absolute pattern graduations and incremental
pattern graduations with phase control
    4.
    发明授权
    Absolute encoder having absolute pattern graduations and incremental pattern graduations with phase control 失效
    绝对编码器具有绝对模式刻度和带相位控制的增量模式刻度

    公开(公告)号:US5563408A

    公开(公告)日:1996-10-08

    申请号:US330113

    申请日:1994-10-27

    摘要: An absolute encoder having a coder in which an incremental pattern and an absolute pattern are arranged in parallel and a detector including sensors for detecting the incremental pattern and the absolute pattern respectively. The absolute encoder comprises a discriminater to discriminate a relative phase position of the coder and the detector in one pitch of the incremental pattern from an output of the sensor for detecting the incremental pattern, and a signal generator to generate a synchronizing signal when a discriminated phase position coincides with a predetemined phase position by means of an electric circuit in one pitch of the incremental pattern. The absolute pattern is read on the basis of the synchronizing signal at a position except for the boundary region between the minimum reading units.

    摘要翻译: 具有编码器的绝对编码器,其中增量图案和绝对图案被并列布置;检测器包括分别用于检测增量图案和绝对图案的传感器。 该绝对编码器包括一个鉴别器,用于鉴别增量图案的一个间距中的编码器和检测器的相对相位位置与用于检测增量图形的传感器的输出,以及信号发生器,当鉴别相位 位置与预调节相位位置一致,通过增量图案的一个间距中的电路。 基于除了最小读取单位之间的边界区域以外的位置处的同步信号来读取绝对图案。

    Absolute position detection encoder
    5.
    发明授权
    Absolute position detection encoder 失效
    绝对位置检测编码器

    公开(公告)号:US5068529A

    公开(公告)日:1991-11-26

    申请号:US453986

    申请日:1989-12-20

    IPC分类号: G01D5/249 H03M1/28 H03M1/30

    摘要: An absolute position detection encoder includes a coder having a track provided with first graduations of an absolute pattern and second graduations of an incremental pattern, plural sensors movable relative to the coder along the longitudinal direction of the track, and a signal processing circuit for processing detection pulse trains, obtained upon reading the first graduations by the sensors, in synchronism with the time point corresponding to approximately the mid position of the minimum reading unit of the first graduation. The encoder outputs the relative position between the coder and the sensors in the form of parallel code signals as the absolute position read out from the absolute pattern graduations on the coder. By detecting the absolute pattern in synchronism with the time point corresponding to substantially the middle of the minimum reading unit of the first graduations, an absolute position detection signal of the correct code contents free of readout errors may be taken out for both the forward and reverse directions of the relative movement. On account of the signal selection function by the binary repetitive rectangular signal obtained from the incremental pattern reading results, the absolute position detection signal of the correct code contents may be taken out simultaneously with turn-on of the power source. The binary repetitive rectangular signal may also be used for generating a sub-scale signal for substantially improving the resolving power.

    摘要翻译: 绝对位置检测编码器包括编码器,该编码器具有设置有绝对图案的第一刻度和增量图案的第二刻度的多个传感器,沿着轨道的纵向相对于编码器可移动的多个传感器,以及用于处理检测的信号处理电路 与第一刻度的最小读取单元的大致中间位置对应的时间点同步地由传感器读取第一刻度而获得的脉冲序列。 编码器以编码器的形式从绝对位置读出的绝对位置以并行码信号的形式输出编码器和传感器之间的相对位置。 通过与第一刻度的基本上与最小读取单元的大致中间相对应的时间点同步地检测绝对图案,可以取出没有读出误差的正确代码内容的绝对位置检测信号,用于正向和反向 方向相对运动。 由于通过从增量图案读取结果获得的二进制重复矩形信号的信号选择功能,可以在电源的接通时同时取出正确的代码内容的绝对位置检测信号。 二进制重复矩形信号也可以用于产生用于大大提高分辨率的子标度信号。

    Multiple rotating absolute encoder capable of accurately latching
absolute address data with data on number of rotations
    6.
    发明授权
    Multiple rotating absolute encoder capable of accurately latching absolute address data with data on number of rotations 失效
    多旋转绝对编码器能够精确地将绝对地址数据与转数数据进行锁存

    公开(公告)号:US5663557A

    公开(公告)日:1997-09-02

    申请号:US501651

    申请日:1995-07-12

    摘要: A disclosed multiple rotating absolute encoder comprises an encoding plate with a first pattern and a second pattern formed thereon, a first detection unit for reading the first pattern and outputting an information in one rotation of the encoding plate, a second detection unit for reading the second pattern and outputting a first rotation information of the encoding plate, a calculation unit for calculating a second rotation data based on the information in one rotation and the first rotation data, a selection unit for monitoring a rotation speed of the encoding plate and selecting either the first rotation data or the second rotation data in accordance with the rotation speed, and a data calculation unit for calculating rotation information of the encoding plate on the basis of either the first rotation data or the second rotation data selected by the selection unit and the information in one rotation.

    摘要翻译: 公开的多旋转绝对编码器包括:编码板,其具有形成在其上的第一图案和第二图案;第一检测单元,用于读取第一图案并在编码板的一个旋转中输出信息;第二检测单元,用于读取第二图案 输出编码板的第一旋转信息,计算单元,用于基于一个旋转中的信息计算第二旋转数据和第一旋转数据;选择单元,用于监视编码板的转速,并选择 根据旋转速度的第一旋转数据或第二旋转数据,以及数据计算单元,用于基于由选择单元选择的第一旋转数据或第二旋转数据以及信息来计算编码板的旋转信息 在一个旋转。

    Modular encoder and method of manufacturing the same
    7.
    发明授权
    Modular encoder and method of manufacturing the same 有权
    模块化编码器及其制造方法

    公开(公告)号:US06107621A

    公开(公告)日:2000-08-22

    申请号:US77115

    申请日:1999-07-29

    摘要: Each component of a modular encoder can be formed so as to be fixed to a rotary shaft of a rotating unit in a horizontal direction (a direction of a shaft line of a rotary shaft). Consequently, the modular encoder can easily be assembled and fixed, and reliability of fixation can be enhanced at the same time. In addition, the modular encoder has an elliptical shape so that a size thereof can be reduced in a direction in which a dimension should be decreased. Furthermore, if the holding member is rotatably fitted in the locking member in such a manner that the holding member can be rotated around the rotary shaft of the rotating unit, a sign plate can easily be aligned.

    摘要翻译: PCT No.PCT / JP97 / 00736 Sec。 371日期1999年7月29日第 102(e)1999年7月29日PCT 1997年3月6日PCT公布。 出版物WO97 / 33142 日期1997年9月12日模块化编码器的每个部件可以形成为在水平方向(旋转轴的轴线方向)上固定到旋转单元的旋转轴。 因此,可以容易地组装和固定模块化编码器,同时可以提高固定的可靠性。 此外,模块化编码器具有椭圆形状,使得其尺寸可以在尺寸应该减小的方向上减小。 此外,如果保持构件以使得保持构件能够围绕旋转单元的旋转轴旋转的方式可旋转地装配在锁定构件中,则可以容易地对准符号板。