- 专利标题: Inductive position encoder utilizing slanted scale pattern
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申请号: US17900635申请日: 2022-08-31
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公开(公告)号: US12072213B2公开(公告)日: 2024-08-27
- 发明人: Ted Staton Cook
- 申请人: Mitutoyo Corporation
- 申请人地址: JP Kanagawa-ken
- 专利权人: Mitutoyo Corporation
- 当前专利权人: Mitutoyo Corporation
- 当前专利权人地址: JP Kanagawa-ken
- 代理机构: Seed IP Law Group LLP
- 主分类号: G01D5/20
- IPC分类号: G01D5/20 ; G01B7/00 ; G01D5/249
摘要:
An inductive type position encoder includes a scale, a detector portion and a signal processor. According to one aspect, field generating elements and sensing elements of the detector portion are provided on opposite sides of the scale such that at least part of the scale is between the field generating elements and the sensing elements (transmissive configuration). According to another aspect, the scale comprises a periodic scale pattern including signal modulating elements that are disposed along a scale direction, which is not parallel to a measuring axis direction of the encoder and is slanted at a scale angle relative to the measuring axis direction, such that there is a corresponding y-direction displacement for a given x-direction displacement of the encoder. These aspects of the disclosure make it possible to design a very compact inductive type position encoder, including one capable of indicating an absolute position along the scale.
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