公开(公告)号：US5910781A

公开(公告)日：1999-06-08

申请号：US994945

申请日：1997-12-19

申请人： Masayuki Kawamoto ,  Kimitoshi Tsuzi ,  Jun-ichi Nakaho

发明人： Masayuki Kawamoto ,  Kimitoshi Tsuzi ,  Jun-ichi Nakaho

IPC分类号： G01B7/30 ,  G01D5/24 ,  G01D5/245 ,  G08C19/10

CPC分类号： G01D5/2405

摘要： A capacitive angle detector according to the present invention is capable of detecting a rotating angle with a high precision. The capacitive angle detector includes a first member, a second member and a third member. The first and second members have a plurality of electrodes thereon to form a plurality of capacitors. The electrodes on the first member and the electrodes on the second member are free from relative rotation and arranged opposite each other. The third member rotates relative to the first and second members in accordance with a rotating movement of a rotating body, thus changing capacitance values of the capacitors. Based on capacitance values of the capacitors, the capacitive angle detector detects a rotating angle of the rotating body. In this capacitive angle detector, the third member is made of a dielectric material or a conductive metal material. The third member is partially interposed between the electrodes arranged opposite each other.

摘要翻译： 根据本发明的电容式角度检测器能够以高精度检测旋转角度。 电容角检测器包括第一构件，第二构件和第三构件。 第一和第二构件在其上具有多个电极以形成多个电容器。 第一构件上的电极和第二构件上的电极没有相对旋转并且彼此相对布置。 第三构件根据旋转体的旋转运动相对于第一构件和第二构件旋转，从而改变电容器的电容值。 基于电容器的电容值，电容角检测器检测旋转体的旋转角度。 在该电容式角度检测器中，第三构件由介电材料或导电金属材料制成。 第三构件被部分插入彼此相对布置的电极之间。