发明名称 |
DISPLACEMENT SENSOR AND DISPLACEMENT DETECTION METHOD |
摘要 |
In a linear displacement sensor, two magnets with different polarities define one pitch of a magnetic scale. kn (k is a natural number greater than or equal to 2, n is a natural number greater than or equal to 1) sensor units configured to output a plurality of signals whose period is one pitch and whose phases with respect to the pitch are different are arranged along the magnetic scale in a one-pitch segment. Periodic errors with n periods per pitch of the sensor units are canceled out by averaging the phases from the kn sensor units. |
申请公布号 |
US2015345992(A1) |
申请公布日期 |
2015.12.03 |
申请号 |
US201314759710 |
申请日期 |
2013.12.18 |
申请人 |
MURATA MACHINERY, LTD. |
发明人 |
SHIMIZU Tetsuya;KUBO Hideki;HANAKA Satoshi;OTA Tatsuo;TERADA Shogo |
分类号 |
G01D5/14;G01R25/00;G01R17/00 |
主分类号 |
G01D5/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
Kyoto-shi, Kyoto JP |