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    • 38. 发明授权
    • Electromagnetic induction type absolute position measuring encoder
    • 电磁感应式绝对位置测量编码器
    • US08847583B2
    • 2014-09-30
    • US13564141
    • 2012-08-01
    • Kouji SasakiOsamu Kawatoko
    • Kouji SasakiOsamu Kawatoko
    • H01F5/00G01D5/20G01D1/00H01F1/00
    • G01D5/2086G01D1/00H01F1/00
    • An electromagnetic induction type absolute position measuring encoder having two or more rows of scale coils, each of the rows having a scale pitch different from that of another row; a transmitter coil and a receiver coil arranged on a grid that is movable relative to the scale in the measuring direction so as to face the scale coils; and the track is constituted by the scale coils, the transmitter coil and the receiver coil. The encoder is capable of measuring an absolute position of the grid with respect to the scale from a flux change detected at the receiver coil via the scale coils when the transmitter coil is excited, in which at least one loop-shaped additional scale coil is added between the scale coils in at least one of the tracks.
    • 一种电磁感应式绝对位置测量编码器,具有两行或更多行的刻度线圈,每行的刻度间距与另一行的刻度间距不同; 布置在栅格上的发射器线圈和接收器线圈,其能够相对于刻度尺在测量方向上移动以面对刻度线圈; 并且轨道由刻度线圈,发射器线圈和接收器线圈构成。 当发射线圈被激励时,编码器能够根据在接收器线圈处经由刻度线圈检测到的磁通量变化来相对于刻度测量电网的绝对位置,其中至少添加一个环形附加刻度线圈 在至少一个轨道中的刻度线圈之间。