公开(公告)号：US20030080756A1

公开(公告)日：2003-05-01

申请号：US10279846

申请日：2002-10-25

Applicant: National Inst. of Advanced Ind. Science and Tech.

Inventor： Yuji Kasai ,  Hirokazu Nosato ,  Masahiro Murakawa ,  Taro Itatani ,  Tetsuya Higuchi

IPC: G01R027/26

CPC classification number: G01D5/24 ,  G01D5/2417 ,  H01S3/105

Abstract: A capacitance position sensor comprises a pair of opposed tabular electrodes, an LC oscillator circuit having a toroidal core winding and whose oscillating frequency varies with change in capacitance between the pair of electrodes, and an arithmetic processing unit for calculating an absolute value of a distance between the electrodes from the oscillating frequency of the oscillator circuit. A position controller comprises a stationary member formed with one electrode of the pair of electrodes of the position sensor, a movable member on which the other electrode of the pair of electrodes is formed, and moving means for moving the movable member relative to the stationary member.

Abstract translation: 电容位置传感器包括一对相对的平板状电极，LC振荡器电路，具有环形铁芯绕组，其振荡频率随着该对电极之间的电容变化而变化;以及运算处理单元，用于计算在一对电极之间的距离的绝对值 电极从振荡电路的振荡频率。 位置控制器包括形成有位置传感器的一对电极的一个电极的静止部件，形成有该对电极的另一个电极的可动部件和用于使可动部件相对于固定部件移动的移动部件 。