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    • 1. 发明申请
    • ABSOLUTE-TYPE ENCODER AND METHOD FOR DETECTING ABSOLUTE POSITION
    • 绝对型编码器和检测绝对位置的方法
    • US20100051792A1
    • 2010-03-04
    • US12202656
    • 2008-09-02
    • Hong-Cheng SHEUMang Ou-YangWei-Kai SU
    • Hong-Cheng SHEUMang Ou-YangWei-Kai SU
    • G01D5/34
    • G01D5/34792G01D5/3473
    • An absolute-type encoder includes an absolute-type encoder wheel. The absolute-type encoder wheel includes a primary optical grating unit and two secondary optical grating units, wherein the two secondary optical grating units are arranged outside and inside the primary optical grating unit and contain one less optical grating than that of the primary optical grating unit. The encoder wheel is rotated to find a zero point in the light detection signal of the secondary optical grating unit, and a corresponding light detection value of the primary optical grating unit is also determined based on the zero point. The absolute position of the encoder wheel can be calculated with reference to the corresponding light detection value. The absolute-type encoder can also be used as an incremental-type encoder to provide more versatility.
    • 绝对型编码器包括绝对型编码器轮。 绝对型编码器轮包括主光栅单元和两个次光栅单元,其中两个次光栅单元布置在主光栅单元的外部和内部,并且包含比主光栅单元少的光栅 。 旋转编码器轮以在次光栅单元的光检测信号中找到零点,并且还基于零点来确定主光栅单元的对应的光检测值。 可以参照相应的光检测值来计算编码器轮的绝对位置。 绝对型编码器也可以用作增量型编码器,以提供更多的通用性。
    • 2. 发明授权
    • Absolute-type encoder and method for detecting absolute position
    • 绝对型编码器及绝对位置检测方法
    • US07875844B2
    • 2011-01-25
    • US12202656
    • 2008-09-02
    • Hong-Cheng SheuMang Ou-YangWei-Kai Su
    • Hong-Cheng SheuMang Ou-YangWei-Kai Su
    • G01D5/34
    • G01D5/34792G01D5/3473
    • An absolute-type encoder includes an absolute-type encoder wheel. The absolute-type encoder wheel includes a primary optical grating unit and two secondary optical grating units, wherein the two secondary optical grating units are arranged outside and inside the primary optical grating unit and contain one less optical grating than that of the primary optical grating unit. The encoder wheel is rotated to find a zero point in the light detection signal of the secondary optical grating unit, and a corresponding light detection value of the primary optical grating unit is also determined based on the zero point. The absolute position of the encoder wheel can be calculated with reference to the corresponding light detection value. The absolute-type encoder can also be used as an incremental-type encoder to provide more versatility.
    • 绝对型编码器包括绝对型编码器轮。 绝对型编码器轮包括主光栅单元和两个次光栅单元,其中两个次光栅单元布置在主光栅单元的外部和内部,并且包含比主光栅单元少的光栅 。 旋转编码器轮以在次光栅单元的光检测信号中找到零点,并且还基于零点来确定主光栅单元的对应的光检测值。 可以参照相应的光检测值来计算编码器轮的绝对位置。 绝对型编码器也可以用作增量型编码器,以提供更多的通用性。