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    • 5. 发明授权
    • Apparatus and method using an indexed-encoder to sense the absolute
position of an object with a single set of optics
    • 使用索引编码器用单组光学器件检测物体的绝对位置的装置和方法
    • US06043483A
    • 2000-03-28
    • US998939
    • 1997-12-29
    • Charles T. Schreiber
    • Charles T. Schreiber
    • G01D5/36G01D5/34
    • G01D5/36
    • An apparatus and method for detecting the absolute position of a movable member, by monitoring the incremental and directional of movement of an indexed-encoder, coupled to the movable member, and comprising a single index space and a plurality of non-index spaces. The index space of the indexed-encoder member has a characteristic different than a characteristic of all of the other non-index spaces. The apparatus is capable of distinguishing the index space from any of the non-index spaces based on the characteristics of the index space and non-index spaces, and thus detecting when the index space or any of the non-index spaces is at the predetermined location. Based on the detection of the index and non-index spaces, the apparatus determines the direction of movement of the indexed-encoder, and an incremental movement in which the indexed-encoder has moved relative to the predetermined index location, to determine the absolute position of the indexed-encoder and hence, of the movable member with respect to the predetermined index location.
    • 一种用于通过监测连接到可移动构件的分度编码器的增量和方向来检测可移动构件的绝对位置的装置和方法,并且包括单个索引空间和多个非索引空间。 索引编码器构件的索引空间具有与所有其他非索引空间的特性不同的特性。 该装置能够基于索引空间和非索引空间的特性来区分索引空间与任何非索引空间,并且因此检测索引空间或任何非索引空间何时处于预定的索引空间 位置。 基于索引和非索引空间的检测,设备确定索引编码器的移动方向以及索引编码器相对于预定索引位置移动的增量移动,以确定绝对位置 并且因此相对于预定索引位置的可移动部件。