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    • 7. 发明授权
    • Rotation angle detector
    • 旋转角度检测器
    • US06848187B2
    • 2005-02-01
    • US10362810
    • 2001-09-21
    • Shigeji ItoYasuhiko FutamuraShigenori NittaMikihisa Araki
    • Shigeji ItoYasuhiko FutamuraShigenori NittaMikihisa Araki
    • G01D5/249G01D5/36G01B11/26G01B7/30
    • G01D5/36G01D5/2492G01D5/363
    • A rotation angle detector that is able to detect an absolute rotation angle of a detection body accurately and is able to reduce the installation space required. The rotation angle detector includes a first rotation angle detector connected to the detection body for generating a first detection signal having a cycle corresponding to the rotation of the detection body. The first rotation angle detector includes a first rotating body which is connected to the detection body and rotates together with the detection body. The detector includes a second rotation angle detector connected to the first rotation angle detector. The second rotation angle detector includes a second rotating body that rotates together with the first rotating body at a rate greater than that of the first rotating body, and generates a second detection signal having a cycle corresponding to the rotation of the second rotation body. The control device detects an absolute rotation angle of the detection body in accordance with the first detection signal and the second detection signal.
    • 能够精确地检测检测体的绝对旋转角度并能够减少所需安装空间的旋转角度检测器。 旋转角度检测器包括连接到检测体的第一旋转角度检测器,用于产生具有与检测体旋转对应的周期的第一检测信号。 第一旋转角度检测器包括与检测体连接并与检测体一起旋转的第一旋转体。 检测器包括连接到第一旋转角度检测器的第二旋转角度检测器。 第二旋转角度检测器包括与第一旋转体一起以比第一旋转体大的速度旋转的第二旋转体,并产生具有与第二旋转体的旋转对应的周期的第二检测信号。 控制装置根据第一检测信号和第二检测信号检测检测体的绝对旋转角度。