公开(公告)号：US07906958B2

公开(公告)日：2011-03-15

申请号：US12320695

申请日：2009-02-02

申请人： Kenichi Nakayama ,  Osamu Kawatoko ,  Hiroto Kubozono

发明人： Kenichi Nakayama ,  Osamu Kawatoko ,  Hiroto Kubozono

IPC分类号： G01B7/14

CPC分类号： G01D5/2073

摘要： The invention provides a highly accurate and inexpensive electromagnetic induction type encoder capable of acquiring strong signal intensity with the offset reduced by a short scale coil, and is durable against fluctuations in the yaw direction, which includes a number of scale coils 14 arrayed on a scale 10 along the measurement direction, and transmitting coils 24 and receiving coils 20 that are disposed on a grid 12 relatively movably in the measurement direction with respect to the scale, and which detects a relative movement amount of the scale and the grid from changes in magnetic fluxes detected by the receiving coils via the scale coil when the transmitting coils are magnetized, wherein a plurality of sets of the transmitting coils (24A, 24B), the receiving coils (20A, 20B) and the scale coils (14A, 14B) are disposed symmetrically with respect to the center of the scale, and scale coils of one set located at a symmetrical position around the center of the scale is disposed with ½ phase of the scale pitch shifted with respect to scale coils of the other set.

摘要翻译： 本发明提供了一种高精度和便宜的电磁感应型编码器，其能够以较小的线圈减小偏移量来获得强信号强度，并且能够抵抗横摆方向的波动，其包括以比例尺排列的多个刻度线圈14 10，并且相对于刻度在测量方向上相对移动地设置在栅格12上的发送线圈24和接收线圈20，并且从磁性变化检测标尺和格栅的相对移动量 其中，发送线圈（24A，24B），接收线圈（20A，20B）和标尺线圈（14A，14B）的组合是多个发送线圈（24A，24B），接收线圈 相对于标尺的中心对称设置，并且位于围绕刻度中心的对称位置的一组的标尺线圈与 相对于另一组的比例线圈，刻度音调的1/2相移。

公开(公告)号：US20090195241A1

公开(公告)日：2009-08-06

申请号：US12320695

申请日：2009-02-02

申请人： Kenichi Nakayama ,  Osamu Kawatoko ,  Hiroto Kubozono

发明人： Kenichi Nakayama ,  Osamu Kawatoko ,  Hiroto Kubozono

IPC分类号： G01B7/14

CPC分类号： G01D5/2073

摘要： The invention provides a highly accurate and inexpensive electromagnetic induction type encoder capable of acquiring strong signal intensity with the offset reduced by a short scale coil, and is durable against fluctuations in the yaw direction, which includes a number of scale coils 14 arrayed on a scale 10 along the measurement direction, and transmitting coils 24 and receiving coils 20 that are disposed on a grid 12 relatively movably in the measurement direction with respect to the scale, and which detects a relative movement amount of the scale and the grid from changes in magnetic fluxes detected by the receiving coils via the scale coil when the transmitting coils are magnetized, wherein a plurality of sets of the transmitting coils (24A, 24B), the receiving coils (20A, 20B) and the scale coils (14A, 14B) are disposed symmetrically with respect to the center of the scale, and scale coils of one set located at a symmetrical position around the center of the scale is disposed with ½ phase of the scale pitch shifted with respect to scale coils of the other set.

摘要翻译： 本发明提供了一种高精度和便宜的电磁感应型编码器，其能够以较小的线圈减小偏移量来获得强信号强度，并且能够抵抗横摆方向的波动，其包括以比例尺排列的多个刻度线圈14 10，并且相对于刻度在测量方向上相对移动地设置在栅格12上的发送线圈24和接收线圈20，并且从磁性变化检测标尺和格栅的相对移动量 其中，发送线圈（24A，24B），接收线圈（20A，20B）和标尺线圈（14A，14B）的组合是多个发送线圈（24A，24B），接收线圈 相对于标尺的中心对称设置，并且位于围绕刻度中心的对称位置的一组的标尺线圈与 相对于另一组的比例线圈，刻度音调的1/2相移。