发明名称 |
Apparatus for sensing angular positions of an object |
摘要 |
An apparatus for sensing a position of an object is provided that may include a magnet mounted for rotation about an axis and a magnetic field-sensing device mounted in fixed relation to and spaced from the magnet wherein the magnet is shaped to define a distance between an exterior surface of the magnet and a surface of the magnetic field-sensing device whereby rotation of the magnet causes the distance to change at a rate so that a flux density distribution sensed by the magnetic field-sensing device changes at a substantially linear rate. In one aspect the magnet is configured to have a substantially elliptical shape and the magnetic field-sensing device is a Hall-effect sensor. A sensor system may include a housing, a magnet having an exterior surface defining a radius of curvature and a shaft rotatably coupled with the housing with the magnet connected to the shaft for rotation about an axis in response to an angular displacement of an object. A magnetic field-sensing device may be provided that is coupled with the housing and spaced from the magnet to define an air gap there between. The air gap may change at a rate in response to rotation of the magnet so that a flux density level sensed by the magnetic field-sensing device changes at a substantially linear rate.
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申请公布号 |
US2005194967(A1) |
申请公布日期 |
2005.09.08 |
申请号 |
US20040792488 |
申请日期 |
2004.03.03 |
申请人 |
GODOY ARQUIMEDES;MARTINEZ DANIEL A.;ALMARAZ JOSE L. |
发明人 |
GODOY ARQUIMEDES;MARTINEZ DANIEL A.;ALMARAZ JOSE L. |
分类号 |
G01D5/14;(IPC1-7):G01B7/30 |
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 |
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