发明名称 |
ROTATION ANGLE DETECTION DEVICE AND ROTATION ANGLE CORRECTION METHOD |
摘要 |
A device for detecting an absolute rotation angle of multiple rotation with a high accuracy and high resolution by using a target connected to the rotation axis and having an outer circumferential surface to which magnetic poles of alternate polarities are magnetized. The device includes: a first rotor holding a target connected to an input axis and having an outer circumferential surface to which magnetic poles of alternate polarities are magnetized at an identical interval and having a multi-rotatable gear; a second rotor connected to the gear of the first rotor, rotated at a low speed by the first rotor, and having a magnet at the center portion; a first detection unit and a second detection unit for detecting the rotation angles of them. With a simple configuration, it is possible to detect an absolution rotation angle with a high accuracy and a high resolution.
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申请公布号 |
US2009021246(A1) |
申请公布日期 |
2009.01.22 |
申请号 |
US20060813713 |
申请日期 |
2006.02.09 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
UEHIRA KIYOTAKA;OIKE KOUJI;ICHINOMIYA NORITAKA;SASANOUCHI KIYOTAKA;SANTO KOUICHI |
分类号 |
G01B7/30 |
主分类号 |
G01B7/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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